bluuebunny/crossref_metadata_2025 huggingface dataset:
ASSOCIATION OF YIELD AND ITS COMPONENTS IN RICE (ORYZA SATIVA L.)
Authors:   Asst. Professor Rice Research Institute, Aduthurai - 612101, Tamil Nadu, R MARIMUTHU , S RAJASEKARAN ,   Professor And Head Sugarcune Research Station,Cuddalore 607 001 Tamil nadu., G SOUNDRAPANDIAN ,   Dean (Agriculture), Agricultural College & Research Institute Coimbatore
Published: September 2023

In rice, positive and significant correlation existed between yield and five of its components, plant height, production tillers, panicle length, grain number per panicle and grain weight in the F2 progenies. Both positive and negative correlations between days to flowering and other yield component traits were observed. Significant and positive intercorrelations between plant height and tiller number and panicle length; tiller number and panicle length and panicle length and grain number were observed in the crosses.
GENETIC DIVERGENCE IN SORGHUM (SORGHUM BICOLOR) (L.) Moench)
Authors:   Assitant Professor, (Breeding) Rice Research Station, Tamil Nadu Agricultural University Ambasamudhram 627 401, . SHANMUGASUNDARAM , . SUBRAMANIAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Forty diverse genotypes of sorghum (Sorghum bicolor (L.) Moench) evaluated for the genetic diversity were grouped into 15 clusters indicating the high genetic divergence among them. The pattern of D2 clusters clearly demonstrated that the geographical distribution in sorghum were not fully related to genetic diversity. Based on the intercluster distance and cluster mean for various characters, potential parents were identified from different clusters for hybridisation programme. Grain yield, straw yield and grain number contributed maximum towards the genetic divergence among the types studied.
CORRELATION AND PATH COEFFICIENT ANALYSIS OF COMPONENTS OF SEED YIELD IN SUNFLOWER (HELIANTHUS ANNUUS L.)
Authors:   Associate Research Scientist (Plant Breeding) N.A.R.P Sub Station, Gujarat Agri University, H.C PATHAK , S.K DIXIT ,   Associate Professor, (Agricultural Statistics) Gujarat Agri University
Published: September 2023

Genotypic, phenotypic and environmental correlations were computed in a collection of 37 diverse sunflower (Helianthus annuus L.) varieties grown under semi-arid conditions of Rajasthan. The genotypic correlations were generally higher than corresponding phenotypic and environmental correlations. Seed yield per plant was significantly and positively correlated with stem girth, head weight, shelling percentage and 100-seed weight. Path coefficient analysis revealed the maximum direct effect of head diameter followed by head weight, days to flowering, days maturity and 100-seed weight on seed yield per plant. Plant height, stem girth, leaves per plant and shelling percentage influenced the yield mostly through other characters.
VARIABILITY AND CORRELATION STUDIES OF KERNEL WEIGHT AND RELATED ATTRIBUTES IN GROUNDNUT (ARACHIS HYPOGAEA L.)
Authors:   Assitant Professor, Tamil Nadu Agricultural University Coimbatore  641 003, V MANOHARAN , P VINDHYAVARMAN ,   Assitant Professor, Tamil Nadu Agricultural University Coimbatore  641 003, R SETHUPATHI RAMALINGAM ,   Professor, School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Iwenty three groundnut genotypes were evaluated for genetic parameters. High heritability estimates combined with genetic advance were observed for pod and kernel weights indicating that these characters are governed by additive genes. The genetic advance for pod width, L/W ratio, shelling and SMK percentages was low. Seed weight was positively correlated with pod length, breadth, L/W ratio and weight.
CORRELATION AND PATH ANALYSIS OF SOME PHYSIOLOGICAL TRAITS IN BLACKGRAM (VIGNA MUNGO (L.) Hepper.
Authors:   Dept of Genectics And Plant Breeding,Agriculture College Bapatla,Andhra Pradesh, T ANURADHA , B KRISHNA MURTY ,   Dept of Genectics And Plant Breeding,Agriculture College Bapatla,Andhra Pradesh
Published: September 2023

Total biomass per plant, nitrogen content at prepodding stage and harvest index showed positive and significant association with seed yield, while nitrogen content at harvest stage showed nonsignificant association and specific leaf weight showed negative correlation with seed yield. Path analysis studies revealed that nitrogen content at prepodding stage, total biomass per plant and harvest index showed positive direct effects. Positive correlation of these traits along with positive direct effects indicated usefulness of these traits for direct selection. Specific leaf weight and nitrogen content at harvest stage gave negative direct effects reflecting meagre importance for yield improvement in blackgram.
ESTIMATES OF GENETIC PARAMETERS AND CORRELATION COEFFICIENTS IN FODDER SORGHUM
Authors:   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., A AMIRTHADEVARATHINAM , R SANKARAPANDIAN ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., N NATARAJAN ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu.
Published: September 2023

A wide range of variation was observed for all the twelve characters in 30 genotypes of fodder sorghum and it was more pronounced in plant stand, plant height, leaf length and earhead weight. Further, plant height, plant stand, total, soluble solids and leaf length showed large genotypic variability. Highest genotypic coefficient of variation was observed for fodder yield, followed by total soluble solids and grain yield. Total soluble solids, grain yield, plant height, number of leaves, earhead girth and leaf width had high heritability estimates combined with high genetic advance. Fodder yield had high genetic advance but moderate heritability. The genotypic correlation coefficients were larger than phenotypic correlation coefficients. Plant height and total soluble solids showed high positive correlation with fodder yield. Plant height was by itself correlated with plant stand, leaf length, leaf width and grain yield and this character would be an ideal selection criterion in fodder sorghum.
PHENOTYPIC STABILITY FOR SEED YIELD IN SAFFLOWER (CARTHAMUS TINCTORIUS L.)
Authors:   Central Arld Zone Research Institute, Jodhapur 342 003, A HIENRY , H.S DAULAY ,   Central Arld Zone Research Institute, Jodhapur 342 003
Published: September 2023

There was a significant variation in respect of genotype x environmental interactions for seed yield in safflower. A large portion of these interactions was accounted for by the linear regression on the environmental means, although non-linear component was also significant. The crop, in general, gave better performance when grown in closer row spacings of 30 cm under favourable moisture growing conditions. However, under moisture stress conditions, no marked yield response was observed to the different row spacings. Genotypes like C 438 and AN 1 were found to be stable with high mean yield and average responses to the changes in the environmental conditions. Hence their exploitation in a breeding programme will help in improving the productivity of the crop.
BETTER SUGARCANE VARIETIES FOR JAGGERY MAKING
Authors:   Regional Agricultural Research Station,Andhra Pradesh Agricultural University, Hyderabad, S RAMAKRISHNA RAO , K VEERABILADRA RAO ,   Regional Agricultural Research Station,Andhra Pradesh Agricultural University, Hyderabad, J.V.R BHUPALA RAO ,   Regional Agricultural Research Station,Andhra Pradesh Agricultural University, Hyderabad, M RAMA RAO ,   Regional Agricultural Research Station,Andhra Pradesh Agricultural University, Hyderabad, V RAJABAPA RAO ,   Regional Agricultural Research Station,Andhra Pradesh Agricultural University, Hyderabad
Published: September 2023

Studies were conducted to test the Improved sugarcane varieties of different maturity groups for quality jaggery from 1984-85 to 1986-87. Varieties Co 7508, Co 6907 and CoA 8401 to crush in early part of the season (November-January), COT 8201, Co 7219 and CoA 7602 to crush in February, COR 8001, Co 7706 and CoA 8402 to crush in the late part of the season (March) were identified and recommended for better quality jaggery making.
COMBINING ABILITY OF SOME QUANTITATIVE TRAITS IN TRITICALE
Authors:   Regional Research Station Chandangaon Chindawara 480 061, P.C UPADHYAYA , A.R SAWANT ,   Regional Research Station Chandangaon Chindawara 480 061
Published: September 2023

A line x tester (6 x 3) analysis involving morphologically diverse females of triticale showed JNK6T-233 and JNIT-73 as best general combiners for the characters studied. Specific combining ability analysis represented the combinations of best x good (grain number/ear), good x average (ear number, grain weight/ear and grain yield), poor x average (days to maturity) and poor x poor (ear length) general combiners. The epistatic type of gene action appeared to be involved in the most of the cases.
LINE X TESTER ANALYSIS IN SESAME (Sesamum indicum L.)
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, M RAMAKRISHNAN , G SOUNDRAPANDIAN ,   Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

In a line x tester analysis involving 15 lines and 4 testers in sesame (Sesamum indicum L.), combining ability was estimated for nine traits. Predominance of SCA variance over GCA variance indicated that these traits might be controlled predominantly by non additive gene action. Biparental mating followed by recurrent selection might hasten the rate of genetic improvement of these traits in sesame.
GENETICS OF YIELD AND ITS COMPONENTS IN MAIZE (Zea mays L.)
Authors:   Agricultural Research Station, Amberpet Hyderabad 500 013, E SATYANARAYANA , R SAIKUMAR ,   Agricultural Research Station, Amberpet Hyderabad 500 013, G KOTESWARA RAO ,   Agricultural Research Station, Amberpet Hyderabad 500 013
Published: September 2023

Combining ability for yield and yield components in all ten characters were studied in a set of 10 inbred lines and their all possible direct single crosses. Non additive gene action was predominant for plant height, ear height, ear length, ear girth, number of rows per ear, number of grains per row, number of grains per ear, 1000 grain weight, grain weight of 5 ears and yield per plot, though both GCA and SCA variances were significant. Three inbreds viz., X 102, A-670 and H-98 were found to be good general combiners for grain yield. Single crosses 1 x 4, 8x 9 and 2 x 8 had exhibited high sca effects as well as high yields. The selection of Inbreds may be made based on their gea and sca effects simultaneously and breeding approaches which exploit both these genetic parameters may be practised in the materials reported.
HETEROSIS AND COMBINING ABILITY FOR GRAIN YIELD IN SWEET SORGHUM
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, B SELVI , S PALANISAMY ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Seven sweet sorghum B lines were crossed with four grain sorghum B lines in a line x tester design and evaluated for grain yield. Three parameters namely, combining ability effects, heterosis per cent and per se performance were analysed and compared. SS 6B and SS 5B among the lines and 648 B among the testers possessed high gca effects and high per se value. All these parameters answered positively and favourably in the hybrid combination SS 5B x 3660 B and these three parameters can be utilised as criteria for selection of genotypes. In the case of two hybrids, SS 128 x 296 B and SS 4B x 648 B, the per cent hybrid vigour and sca effects were very high and the per se performance was also high in spite of the fact the gca effects of either one or both of the parents were significantly low and these combinations could result in the capitalisation of non additive effects over the super structure of additive gene effects.
QUANTITATIVE VARIABILITY IN THIN AND THICK SOWN FODDER SORGHUM (Sorghum dochna)
Authors:   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., A AMIRTHADEVARATHINAM , R SANKARAPANDIAN ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu.
Published: September 2023

Thickly sown sorghum was characterised by reduced mean for all characters other than plant stand, fodder yield, total soluble solids and days to 50% flowering. In spite of the reduction in mean for majority of characters in thickly sown sorghum, there was 11% increase in the total dry matter production mostly accounted by an increased number of plants. Thinly sown sorghum had a high harvest index (19.1) indicating the efficient partitioning of the dry matter more in favour of grain formation as compared to 10.7 in thickly sown sorghum. Plant height, stem thickness, leaf length, total soluble sollds and days to 50% flowering had a high degree of genotypic variability in both the thin and thick sown sorghum. The genetic coefficient of variability varied with the character and also with the thin or thick sowing. Differential heritability values in thin and thick sown sorghum were recorded for fodder yield, earhead length, earhead weight and stem thickness. Total soluble solids in both the thin and thick sown sorghum and grain yield and stem thickness in thick sown sorghum had high heritability combined with high genetic advance and this indicated that individual plant selection would be effective in improvement of these characters.
PHENOTYPIC STABILITY FOR SEED YIELD IN TARAMIRA
Authors:   Central Arld Zone Research Institute, Jodhapur 342 003, A HENRY , H.S DAULAY ,   Central Arld Zone Research Institute, Jodhapur 342 003
Published: September 2023

Genotype x environment interactions investigated for seed yield in taramira (Eruca sativa L.) during winter seasons over three years revealed significant variation for genotypes and genotype x environment interaction for seed yield. The major portion of the interaction was accounted for by the presence of linear components as non-linear component was non significant. The genotype RTM-1 gave the maximum mean seed yield and showed near unit responses under fluctuating environments. Genotypes LDCH-2 and RTM-2 performed better under favourable and unfavourable growing seasons respectively.
HETEROSIS IN VARIETAL CROSSES OF SUNFLOWER
Authors:   Regional Research Station Kovilangulam 626 107, S CHIDAMBARAM , N SUNDARAM ,   Regional Research Station Kovilangulam 626 107
Published: September 2023

Desirable significant negative heterosis over mid parent was observed for days to 50 percent flowering and maturity almost in all the cross combinations. involving the parent EC 69874. Significant and positive hetrerosis for plant height, head diameter, number of leaves, 100 seed weight and harvest index was also evident in most of the crosses. Heterosis was of low magnitude in case of head diameter and negative in direction for oil content. Heterosis over mid parent for seed yield per plant ranged from 17.4 to 102.7% and the cross Kanpur Selection X Co 1 recorded the highest value. The crosses EC 100101 x K 2, K 74xCo1, K74xK 1 and EC. 68415xCo 1 recorded significant positive heterosis for seed yield and most of the yield components. Significant and positive heterosis over mid parent for oil content was noticed in the hybrids of EC 93617 x Co 1 and EC 22237 x Co 1.
COMBINING ABILITY IN GRAIN SORGHUM
Authors:   Gujarat Agricultural University Surat 395 007, R.H PATEL , K.B DESAI ,   Gujarat Agricultural University Surat 395 007, M.S DESAI ,   Gujarat Agricultural University Surat 395 007, K.G PATEL ,   Gujarat Agricultural University Surat 395 007
Published: September 2023

A diallel set of 10 varieties of grain sorghum Sorghum bicolor (L.) Moench was studied to estimate the combining ability for yield and yield contributing traits. The sca variance was higher than gca variance for almost all the characters. Entry M-209 was better general combiner for earliness, GJ-35 for dwarfness, DMYT 231 for panicle length, DR 23, for grain yield and M-209 for stover yield. Hybrids GJ.- 36 x DR-20 and GJ-35 x DMYT-231 had high soa effect for days to 50% flowering, GJ-36 x DR-23 and GJ-35 x DMYT-231 for earliness, M-209 x DR3-1 and GJ-36 x DR-10 for dwarfness, GJ-35 x M-209 and GJ-35 x DR-10 for panicle length, GJ-36 x M-229 and M-211 x DR-10 for grain yield.
PHENOTYPIC STABILITY FOR SEED YIELD IN INDIAN MUSTARD
Authors:   Central Arld Zone Research Institute, Jodhapur 342 003, A HENRY , H.S DAULAY ,   Central Arld Zone Research Institute, Jodhapur 342 003
Published: September 2023

Twenty nine promising genotypes of Indian mustard (Brassica juncea (L.) Czern & Coss) tested for their seed yield and phenotypic stability revealed that the genotypes interacted considerably with environmental conditions that prevailed in different situations. Both linear and non linear components were significant. S'd value was significant for 19 genotypes. Genotypes DIR 153 and RH 827, though having high s²d values, had almost unit responses to changes in environmental conditions and were high yielders. Genotypes RK 8302 and RK 8301 had high mean seed yield and indicated stable performance in high yielding environments. However, it was T 59 with high deviation value, which gave higher productivity in such situations. Genotypes RIK 81-1, RK 8304 and RS 83 performed promosingly in low yielding environments with latter two genotypes giving stable performance.
GROWTH ANALYSIS IN PIGEONPEA (Cajanus cajan (L.) Millsp) AS INFLUENCED BY DATE OF SOWINGS
Authors:   Assitant Professor,Agricultural College, Killikulam, K NATARAJARATNAM , N NATARAJARATNAM ,   Dean, College of Agriculture,Karaikal
Published: September 2023

An experiment conducted with pigeonpea in three different dates namely 21-2-84 (summer), 21-6-84 (monsoon) and 21-9-84 (winter) revealed that significant higher LAI and CGR was noticed in summer sowings. The Dry Matter Accumulation (DMA) was found to be also maximum in summer sowings. It was mainly influenced through the longer croppings period and also higher LAI and CGR. It was also evident from this study that CGR in pigeonpea was more influenced by LA! rather than NAR.
EVALUATION OF SOIL TESTING PROCEDURES FOR SUGARCANE CROP
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, V MURUGAPPAN , G.V KOTHANDARAMAN ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, T.S MANICKAM ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Field experiments were conducted with the primary objective of investigating the soil test crop response relationships of sugarcane crop. Surface soil samples collected from the plots of these experiments were analysed for available nitrogen (alkaline KMno,-N and organic carbon), phosphorus (Oisen's-P and Bray's-P) and potassium (neutral N NH,OAc-K and 0.1N HNO-K). Relationship between soil test values and cane yield/ nutrient uptake. was established by simple correlat on studies and multiple regression analysis with linear, quadratic polynomial and square root polynomial functions. The results revealed that the organic carbon, Olsen's-P and 0.1N HNO-K are the best indices, respectively of nitrogen, phosphorus and potassium availabilities to sugarcane crop.
SEASONAL INCIDENCE OF RICE THRIPS Stenchaetothrips biformis (BAGNALL)
Authors:   Department of Agricultural Entomology Tamil Nadu Agricultural University Coimbatore  641 003, V.V MADHUSUDHAN , G GOPALAN ,   Department of Agricultural Entomology Tamil Nadu Agricultural University Coimbatore  641 003, M BALASUBRAMANIAN ,   Department of Agricultural Entomology Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Studies conducted at the Paddy Breeding Station, Coimbatore on the seasonal incidence of the rice thrips, Stenchaetothrips biformis in the rice nursery and the main field revealed a peak occurrence of the pest during the months of August and September. The pest population and its damage during the month of March were very low. The pop- ulation of thrips was higher on the weed host, Echinochloa colona during the month of March. Significant positive association was known to exist between thrips population and their damage (r=0.82) and regression equation Y 14.2 + 17.9X indicated that for an increase of one thrip, there would be an increase of 17.9% damage. The regression analyses revealed that an increase of 1% RH would increase the thrips population and their damage by 0.06 and 1.867% respectively as well as increase in sunshine by one hour would reduce the thrips population by 0.017 and their damage by 0.565% in the nursery. In the transplanted crop, increase in evening RH by 1% would increase the thrips population by 0.271 and their damage by 1.129 % as well as increase in sunshine by one hour would reduce thrips damage by 0.29%. The population of thrips on E. colona would be increased by 0.531 for every 1°C increase in minimum temperature.
STUDY ON THE AVAILABILITY OF IRON CONTENT IN SOIL AS INFLUENCED BY IRON APPLICATION IN TWO KINDS
Authors:   Dept.of Soil Science and Agrl,Chemistry ,Agrl. College and Res. Institute Madurai 625 104 Tamilnadu, M VEERAMAN , A GOPALSWAMY ,   Dept.of Soil Science and Agrl,Chemistry ,Agrl. College and Res. Institute Madurai 625 104 Tamilnadu, P PARAMASIVAM ,   Dept.of Soil Science and Agrl,Chemistry ,Agrl. College and Res. Institute Madurai 625 104 Tamilnadu
Published: September 2023

Field experiments were conducted using Typic Chromusterts (Black calcareous soil) and Typic Haplustalf (Red non-calcareous soil) with sorghum var: TNS.27 as the test crop to com- pare the organic sources of iron with that of the inorganic iron sources. In black calcareous soil (S) the treatment FYM 10t+ pyrite 700 kg/ha was found to be superior and: recorded 4.8 ppm DTPA extractable Fo The available Fe in soil was higher at 30th day and decreased thereafter (60th day and harvest stage) due to the age of the crop. In addition to the above field experiments an incubation experiment was also conducted using the same soils (black calcareous and red-non calcareous soil) with same set of treatments to study the changes in DTPA extractable Fe status in soil for the period of 60 days under laboratory condition. This study revealed that availability of Fe content was increasing upto 45th day and decreased thereafter.
SOIL FERTILITY UNDER CONTINUOUS ROTATIONAL CROPPING OF COTTON - PEARL MILLET IN A DRYLAND VERTISOL
Authors:   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., P MUTHUVEL , R.K PALLIKONDAPERUMAL ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., R SIVASAMY ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., V SUBRAMANIAN ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu., U.S SREERAMULU ,   Agricultural Research Station,Tamilnadu Agricultural University,Kovilpatti 628 510 Tamilnadu.
Published: September 2023

In a field study under dryland vertisol four annual addition of FYM in a fixed crop rotation of Cotton pearl millet to supply 40 kg N/ha markedly increased the organic carbon content. Total and available N content of soil also tended to increase under FYM addition: Available P,O, and K,O contents were not altered by the addition of inorganic fertilizers and FYM or their combination.
CRITICAL LEVEL OF ZINC FOR SOILS OF COIMBATORE DISTRICT
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, R DEVARAJAN , R RAMADASS ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, P.P RAMASWAMY ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Effect of zinc application on yield and the establishment of critical level of zinc in. soil was studied in soils of Coimbatore district in Tamilnadu state. The yield of sorghum, cv CSH. 5 increased significantly by the application ut zinc deficient soils. DIPA extractable zinc at 1.5 ppm was found to be critical level of zinc for calcareous soils of Coimbatore district with regard to sorghum crop.
FORECASTING IN AGRICULTURE AN APPROACH THROUGH INTERVAL ESTIMATION
Authors:   GNT Road, Near Cotton Mill, Sullurpet 524 121 Nellur Dist, G NAGESWARA RAO , B.S KULKARNI ,   GNT Road, Near Cotton Mill, Sullurpet 524 121 Nellur Dist
Published: September 2023

In this paper two new methods are attempted for forecasting in agriculture through interval estimation. The first method relaxes the assomption of constant variance for residual errors, which is used in the usual least squares method in curve fitting. The second method involves fitting of three growth curves for normal. above normal and bolow normal values of the time series data. The above methods were illustrated along with the usual least-squares for the data of Production and Productivity of Paddy for Andhra region in Andhra Pradesh from 1961-62 to 1980-81. The first method gave lower and upper boundaries with minimum bias as compared to other two methods.
FIVE EFFICIENCY OF INSECTICIDES FOR THE CONTHUL OF RICE LEAF FOLDER
Authors:   Associate Professor (Entomology) Rice Research Station, Tamil Nadu Agricultural University,Tirur 602 025, R SAROJA
Published: September 2023

Spraying monocrotophos (Nuvacron) 36 SUC @ 500 ml/ha on need basis was found to be the most effective in keeping the rice leaf folder infestation below ET level as well as in giving highest grain yield with maximum net profits. Quinalphos (Ekalux) 25 EC and phosalons (Zolone) 35 EC ranked second in order of efficacy. Performance of chlorpyriphos (Coraban) 20 EC and phosphamidon (Dimecron) 85 SC was moderate, while fenitrothion, dichlorvos, fenthion and carbaryl were not very effective.
SIGNIFICANCE OF DRY MATTER PRODUCTION AND ITS PARTITIONING IN HORSEGRAM GENOTYPES
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, K MANIAN , N NATARAJARATNAM ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, P RAMASWAMY ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, M BALASUBRAMANIAN ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, S.R SREERANGASAMY ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Evaluation of 200 genotypes of horsegram for their efficiency of source and sink strength revealed that partitioning efficiency towards reproductive sink (PERS) and dry matter production at pod development stage had significant effects on grain yield. There were limitations in source in respect of low yielders and sink strength in the high yielders. Genotypes PLS 6114 and HG 23 were isolated es idotypes which possess high DMP and PERS at the time of pod formation stage coupled with better yield performance.
EFFECT OF STRAINER OPENING RATIO ON HEAD LOSS CHARACTERISTICS OF FOOT VALVES IN PUMP SETS
Authors:   Soil and Water Management Research Institute,Tamil Nadu Agricultural University, Coimbatore 641 003, . MUTHUCHAMY , D CHANDRASEKARAN ,   Soil and Water Management Research Institute,Tamil Nadu Agricultural University, Coimbatore 641 003
Published: September 2023

Foot valve is an important component of a pump set. For the loss of pressure in a pump, foot valve is responsible for 10 to 15 percent of the loss. However, with improved foot valves, it is possible to reduce this loss considerably and save energy consumption. By experiments and dimensional analysis, it is clearly indicated that the lesser strainer opening ratio increases the head loss and vice-versa.
COMPARATIVE EFFICIENCY OF DIFFERENT SOURCES OF NITROGEN ON RICE IN CLAYLOAM SOILS OF CAUVERY DELTA
Authors:   Tamil Nadu Rice Research Institute, Aduthurai - 612101, Tamil Nadu, V VELU , A SARAVANAN ,   Tamil Nadu Rice Research Institute, Aduthurai - 612101, Tamil Nadu, K.M KAMANATHAN ,   Tamil Nadu Rice Research Institute, Aduthurai - 612101, Tamil Nadu
Published: September 2023

Field experiments were conducted in clay loam soils of Cauvery delta to evaluate the efficiency of different N sources on rice during kuruvai and thaladi seasons of 1984 and 1985. Application of lac coated urea was beneficial in recording higher grain yield, N use efficiency as well as N uptake by the crop over ordinary urea during kuruvai season. Application of green manure during thaladi season needed higher dose of fertilizer N at planting to get higher yield of rice. Application of Urea super granule recorded the highest N use efficiency during thaladi season. The uptake of N by the crop was higher with the use of urea super granule, lac coated urea as well as green manure + urea.
STUDIES ON PRODUCTION POTENTIAL AND ECONOMICS OF CROP SEQUENCES
Authors:   Agricultural Research Station , Sriganganagar 335 001 Rajastan, SINGH VED
Published: September 2023

A two years study was planned to find out crop yield, production potential and economics of six crop sequences. The highest grain and straw yields were obtained under the crop sequence of paddy-wheat-moong during both the years. Mean annual grain production of 77.00 and 70.42 o/ha obtained respectively under paddy-uheat-moong and maize-wheat-moong were at par and significantly superior over rest of four crop sequences. On an average of two years, net monetary return was highest from paddy- wheat-moong followed by maize-wheat-moong, paddy-gram-moong, maize-gram- moong, paddy-mustard-moong and lowest under maize-mustard-moong.
STUDIES ON THE INTERCROPPING OF SORGHUM (Sorghum bicolor) REDGRAM (Cajanus cajan), GREENGRAM (Vigna radiata) AND SOYBEAN (Glycine max) WITH REFERENCE TO PLANT POPULATION
Authors:   Hariyana Agri. University, Hissan 125 004, S CHANDRASEKHAR , S HUNSHAL ,   Hariyana Agri. University, Hissan 125 004, D.S MALIK ,   Hariyana Agri. University, Hissan 125 004
Published: September 2023

Intercropping of greengram (S-9), sorghum (CSH 6). redgram (UPAS 120) and soybean (Bragg) with two plant populations for each component crop (50 and 100% of their normal population) in a paried row system was studied at Dryland Research area of Haryana Agricultural University, Hissar, during kharif 1979 and 1980. Intercropping, especially with sorghum reduced the grain yield of greegram. During normal year of rainfall (1979) there was no yield difference between 50 and 100 per cent plant population; In compartively dry year (1980), 100 per cent plant in intercropping gave higher yield. Sorghum as an intercrop reduced total dry matter production in greengram.
PHOTOSYNTHETIC EFFICIENCY AND RELATED FACTORS ON GREENGRAM (VIGNA RADIATA (L) WILCZEK) GENOTYPES IN RELATION TO YIELD
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, V DHANDAPANI , J SAKHARAM RAD ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Relationship existed among photosynetchtic efficiency, chlorophyll content, carbohy- drate status, nodele number, nodule weight and yiele. The direct relationship of the above characters with yield brought out their participation through photosyntehtic efficiency.
A. COMPARATIVE STUDY OF HETEROSIS IN HYBRIDS OF MALE STERILE LINES WITH INDIGENOUS SORGHUM CULTIVARS
Authors:   Assitant Professor, Department of Agri.. Botany, AC & RI Madurai, S JEBARAJ , M KADAMBAVANA SUNDARAM ,   Professor, (Cotton) TNAU. Coimbatore, G SOUNDRAPANDIAN ,   Dean, Killikulam Tirunelveli
Published: September 2023

The extent of heterosis for yield and yield attributes in a set of 30 cross combina- tions consisting of six male sterile and five indigenous restorer lines of sorghum were studied. Heterosis was observed in all the hybrids in respect of plant height. The maximum relative heterosis was recorded in the cross CK 60 Ax DSV 23 followed by 1036 A x Usilampatti 2. Twenty three hybrids manifesfed highly significant positive hetero- sis for panicle length. For single plant yield, five crosses 2758 A x K6, CK 60A x K6 10570A x Usilampatti 2, 10570A x DSV 23 and 2758A x Dindigul-1 recorded highly significant relative heterosis.
STUDIES ON NITROGEN MANAGEMENT IN RELATION TO QUALITY GRAIN AND YIELD IN LOWLAND IRRIGATED RICE
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, S PADMAJA RAO
Published: September 2023

Studies conducted in rice with Ratna (early). Prakash (medium) and Phalguna (late) varieties during 1984 kharif season at different nitrogen levels (0, 50, 100. 150 and 200 kg N/ha) indicated that increased level of nitrogen contributed to higher yields but reduced the production of quality (high density) grain. The 1000 grain wt was unaffected at all nitrogen levels. Wider differences observed between average and potential test weight of Ratna and Prakash and meagre difference in Phalguna indicate the extent of possible variation in grain filling pattern among varieties of different duration in relation to nitrogen levels. Higher yield recorded at higher 'N' was attributed to increased production of varied yield components such as panicle number, spikelet and grain number, as influenced by dry matter, leaf area index reflecting in higher photosynthetic efficiency. The study indicated that varieties possessing higher amount of high density grain (quality grain) are suitable for low 'N' management.
CORRELATION STUDIES IN RICE (Oryza sativa L.)
Authors:   Assitant Professor,Tamil Nadu Agricultural University Coimbatore  641 003, . KALAIMANI , M KADAMBAVANASUNDARAM ,   Professor, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

A study was made to find out the phenotypic correlation, correlation based you parents, correlation based on 'sca and heterosis of hybrids far, yield and yield components using 7-X 7 diallel. The results showed positive and significant association of productive tillers. : per plant, number of grains per panicle and 100 grain weight with grain yield both based on mean and geo effects of parents. The correlation between heterosis for different traits indi- cated that heterosis for yield is not influenced by heterosis for other component characters except days to flowering and that heterosis for lateness apparently has a positive effect on yield. Choice of parents based on per se performance and gca effects can lead to rapid improvement in these characters and ultimately the yield,
CO. 5 A NEW BLACKGRAM VARIETY FOR DRY FARMING
Authors:   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, P SHANMUGASUNDARAM , R RAJAGOPAL ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, G SOUNDARAPANDIAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, A AYYEMPERUMAL ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S ANNAPPAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S.R SREE RANGASAMY ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

attempt to develop a short duration blackgram variety for rainfed cultivation. BP, 3 a pureline selection from Musiri local was isolated. The culture was tested under rainfed. irrigated and r ce fallows condition against Co. 3 and Co. 4. It recorded a mean grain yield of 740 kg/ha in comparison to 597 and 532 kg/ha for Co, 4 and Co, 3 respectively under rain- fed condition. Under irrigated condition BP. 3 recorded 1273 kg/ha compared to 1044 kg/ha for Co. 3 and 1224 kg/ha for Co. 4. Under rice fallows condition, BP, 3 recorded a mean grain yield of 931 kg/ha as against 715, 710 and 445 kg/ha for ADT. 2. TMV, 1 and ADT. 1 respectively. It is moderately resistam to powdery mildew, leaf crinkle, tip blight and pod borer. This culture is released as Co 5 for general cultivation in Tamil Nadu.
GENETICS OF QUANTITATIVE CHARACTERS IN BREAD WHEAT
Authors:   Department of Agricultural Botany, S.D.J Post Graduate College, Chandeshwar Azamgah, U.P, R.P SINGH , A.K RAI ,   Research Scholar, Department of Agricultural Botany, S.D.J Post Graduate College, Chandeshwar Azamgah, U.P
Published: September 2023

The gene effects for five quantitative characters were studied in ten crosses of bread wheat. The dominance component was positive and highly significant for all the traits in all the crosses except for spike length. The additive component was also present in sizeable proportion. Additive x additive for spike length and grain weight, additive X dominance for productive tillers and grain yield/plant and dominance X domi- nance for grains/spike were the major components of genetic variance, Complementary type of epistasis was more common for productive tillers. Brains/spike and grain yield/ plant. Four crosses, Kalyansona'x HD 1949, "Kalayansona' x 'K68'. 'Lerma rojo' x 'HD 1949' and 'HD 1949 x 'K 68 were identified as promising. They could be used in wheat breeding programme to exploit both additive and additive x additive compon- ents in varietal improvement programmes through the use of biparental mating in F, generation.
GENOTYPE X ENVIRONMENT INTERACTION FOR GRAIN YIELD IN COWPEA
Authors:   Assitant Professor, National Pulses Research Centre,Vamban Pudukottai, K THIYAGARAJAN , S RAJASEKARAN ,   Professor And Head Sugarcune Research Station,Cuddalore 607 001 Tamil nadu.
Published: September 2023

Seven parents of cowpea (Co 3. Co 4, V 87, KC 199. C 152, KC 195 and CoVu 4) and their twelve F hybrids were evaluated for stability parameters with respect to grain yield in six environments. Pooled analysis of variance revealed that genotypes and environment were significant for grain yield. Mean square due to pooled deviation was non significant. indicating the absence of non-linear portion of genotype x environment interaction The mean square due to linear component was significant for grain yield. The parent Co 4 and the hybrids Co 4 x C 152, Co 4 x KC 195. V 87 x CoVu 4 and KC 199 x C 152 which were stable for grain yield can be utilised in the development of high yielding stable lines,
STUDIES ON NITROGEN AND WEED MANAGEMENT IN RELATION TO NUTRIENT UPTAKE AND YIELD IN SORGHUM
Authors:   Assitant Professor,Tamil Nadu Agricultural University Coimbatore  641 003, R JAYAKUMARI , K SIDDESWARAN ,   Assitant Professor,Tamil Nadu Agricultural University Coimbatore  641 003, N KEMPUCHETTY ,   Associate Professor, Tamil Nadu Agricultural University Coimbatore  641 003, S SUBRAMANIAN ,   Director, Centre for Soil and Crop Management Studies,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Field experiments were conducted in summer and Kharif seasons of 1982 at Tamil Nadu Agricultural University to study the nitrogen use economy and efficacy of herbicides in relation to nutrient uptake and yield of irrigated sorghum Var. Co. 24. Application of pre- emergence atrazine at 0.5 Kg:ha or 0.25 Kg/ha followed by one late manual weeding (35 DAS) registered higher grain yield, nutrients uptake by the crop as well as reduced nutrient removal by weeds in both the seasons at all nitrogen levels. Applcation of 60 Kg N/ha in equal splits (50% Basal + 50% at 30 DAS) recorded higher grain yield of 5866 and 4773 Kg/ha for summer and kharif seasons respectively and it was on par with 90 Kg N/ha indicating the economic utilization of nitrogen with pre-emergence application of atrazine.
PHYSIOLOGICAL INDICES FOR COLD TOLERANCE IN RICE
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, K.S SELVAKUMAR , G SOUNDARAPANDIAN ,   Dean, Agrl. College, Killikulam, R VAITHIALINGAM ,   Associate Professor (Crop Physiology),Agricultural College and Reserch Institute, Madurai
Published: September 2023

Forty rice varieties were screened for cold tolerance by employing 1.TG and estima- ting the content of P and K in shoots and grains at the sub-centre for cold tolerance breeding. Keelagudalur. Estimation of LTG might be useful to screen varieties for early stage low temperature tolerance and the varieties TNAU 20112, KMP 47, Wynad 11, Kattathondi, Peruvaya, Madhu and Intan were highly cold tolerant, while Adakkan 49, AMBT 2, TNAU 4372, TNAU 20105. IET 7024, TNAU 20107, HR 35 and DPI 583 were moderately tolerant at early stage. Adakkan 49, Wynad 11, Kattathondi and Peruvaya also contained more of P and K in their shoot at vegetative stage. IET 7024, DPI 583, Raju- meni, Gandhakesalo and Puspha contained higher P in their grains showing their flower- ing stage cold tolerance.
CATIONIC CONTENT OF GROUNDNUT SHELL AS INFLUENCED BY CALCIUM-SODIUM INTERACTION
Authors:   Assitant Professor,(Crop Physiology), TNAU , Coimbatore 3, A ARJUNAN , S GOPALAKRISHNAN ,   Assitant Professor,(Crop Physiology), TNAU , Coimbatore 3
Published: September 2023

A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore to study the cationic content of shell in groundnut (TMV 7) with four levels of calcium viz., 0. 40 80 and 160 kg/ho and five levels of sodium víz-, 0, 5, 10, 20 and 40 kg/ha. Sodium reduced the absorption of calcium by the developing peg- High amount of calcium alters potassium status which in turn in combination with varying sodium levels produce both synergistic and antagonistic results. The 'The Watchman Antagonsim (TWA) mechanism between sodium and potassium is discussed and a balanced ionic environment in the fruiting medium is stressed for increased pod yield in groundnut.
PREDICTION OF IRON CHLOROSIS IN SUGARCANE FROM PLANT ANALYSIS
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, G RAMANATHAN , N NAGASUNDARAM ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, D AUGUSTINE SELVASEELAN ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, A BHASKAR ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

The technique of plant analysis, as a means of predicting Fa chlorosis in sugarcane crop has been investigated. The study revealed that in the early stages of crop growth, (less than 1 month), differentiation can be made on the basis of metabolically active Fe+ which declined sharply in chlorotic leaves as compered to normal leaves. At later stages, (after 5 months of crop growth), widening of P/Fe ratio predicted. chlorosis better. Still later from 5 to 7 months, there was imbalance of Fe/Mn, revealing chlorosis. Decline in Mn content at 7 to 10 months of crop growth was also indicative of chlorotic condition-
RATIONALISED FERTILISER PRESCRIPTION FOR RICE-ALFISOI ALLUVIUM BASED ON SOIL TEST-CROP RESPONSE STUDIES
Authors:   Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, PERUMAL RANI , P DURAISAMY ,   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, S BASKARAN ,   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, S CHELLAMUTHU ,   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Test verification trials with rice-IR. 20, IR. 50, Bhavani, Co. 43, Ponni and Paiyur-1 were conducted in sixteen sites on Noyyal alluvium (Typic Haplustaff) in TNAU Farm/ farmer's holdings in Coimbatore by adopting fertiliser prescription based on the new concept of "Fertilicer Prescription Procedure for specific yield targets".. The results indicated that the fertiliser prescription based on the new concept fitted well with the yield targets up to 50 q/ha, while the fertiliser prescription for 45 g/ha of yield target. recorded the highest value cost ratios, (VCR). The post-harvest soll analysis from these plots also showed that there was no appreciable decline in the fertility status by follow- ing this approach.
STUDIES ON SYNCHRONISATION OF FLOWERING IN THE PARENTAL LINES OF SORGHUM HYBRIDS-1 VARIATION IN THE DURATION TO FLOWERING AS INFLUENCED BY DATES OF SOWING
Authors:   Assitant Professor, Department of seed  technology Tamil Nadu agricultural University Coimbatore-3, V KRISHNASAMY , K.R RAMASWAMY ,   Dean, (Agri) Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Fortnightly sowings carried out for one year with the parental lines of sorghum hybrids, CSH 5, CSH 6. CSH 9 and CO H 2 revealed the wide differences in the duration to flowering among the parental lines due to sowing dates. For achieving simultaneous flowering, the male lines of hybrids CSH 5, CSH 6 and CSH 9 should be sowm simultaneously, 12 to 19 days and four to seven days earlier than the respective female lines in the monsoon season in the winter season, the male lines of CSH 5, CSH 6, CSH 9 and CO H 2 should be sown seven to ten days later, three days earlier, five to seven days later and three to five days later than the respec- tive female lines. Co H 2 seed production should not be undertaken during monsoon season since the interval in the flowering of the parental lines was too wide to effect pollination.
STUDIES ON INTERCROPPING IN GROUNDNUT
Authors:   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, N ASOKARAJA , A CHAMY ,   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, SP PALANIAPPAN ,   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003
Published: September 2023

A field experiment was conducted on inter-cropping in groundnut during monsoon seasons of 1983 and 1984 and summer seasons of 1984 and 1985 at the Agricult ural Research Station, Bhavanisagar for comparing six intercropping systems with pure groundnut as a means of increasing overall net returns without serious reduction to the groundnut yields. The yield of groundnut was higher with redgram as intercrop at 2.25 m apart than with cotton or maize. During monsoon seasons intercropping system involving groundnut+cotton at 1.5m apart gave higher net income (Rs. 6868/ha) than pure groundnut (Rs 6134/ha) During summer seasons groundnut+redgram at 2-25 m apart gave higher net income (Rs. 6608 ha) than pure groundnut (Rs. 6482/ha). Maize as intercrop was found to reduce the groundnut yields and the net income to a greater extent compared to other intercrops.
VARIABILITY IN YIELD AND OTHER QUANTITATIVE CHARACTERS IN Gossypium barbadense L.
Authors:   Assitant Professor School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, P MANIVASAKAM , S KAMALANATHAN ,   Professor School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

F, and F, generations of four G. barbadense crosses studied for varaiablity in bol number per plant, yield of seed cotton, ginning percent and halo length showec that crosses B (Allepo x suvin) and D (Sudan G. 45 x Giza 7) registered high mean fo boll number, yield of seed cotton and ginning percent, while cross C (suvin x sujata, recorded high mean for mean halo-length. High mean variability for all the four traits were found in cross D. Transgressive segregation beyond the parental means was observed in F generation, indicating that commencement of selection in F, would be ideal, Positive deviates over the means of the respectiva sibs indicated that crosses E and D had relatively high potentiality as compared to other two crosses.