bluuebunny/crossref_metadata_2025 huggingface dataset:
Response of Groundnut variety M-13 to NPK during Kharif season under Konkan climatic conditions
Authors:   Head Department Agronomy Keskee Erich Vidyapeeth Depell 415712 (MB), R.J BHOSALE , S.N JADHAV ,   Assitant Professor Agronomy Keskee Erich Vidyapeeth Depell 415712 (MB), V.B WAGH ,   Assitant Professor Agronomy Keskee Erich Vidyapeeth Depell 415712 (MB)
Published: October 2023

A field experiment to determine the optimum NPK requirement of groundnut (Arachis hypogees L) (variety M-13) was conducted at the Agricultural College Farm. Dopoil for the three years j. 1977. 1978 and 1979 during Kharif season. The results reves ed ther the N. P and K combinations viz.. 26:50:00, 25:50:25 and 25:50:50 kg/he gave significantly more dry pod yield of groundnut over 0:0:0 (control) 4:4:18 and 12 5:25:12 5 kg NPK/ha. Former treatment combinations were at per with each other, Highest dry pad yield (23.45 q/ha) was obtained due to application of 25 50:0 followed by 25:50:50 (23.21 q/ha) and 25:50.25 22.79 q/ha) MPK par hectare respectively. The per cant ineroase was in the range of 67.65 and 62 respectively in later three treat- mante overcontrol.
Studies on Ratooning in Vaigai and Bhavani Rice Varieties
Authors:   Assitant Professor, Department of Agronomy, Agrl,College and Research Institute,Madurai 625 104. Tamil Nadu., A PALCHAMY , S KOLANDAISWAMY ,   Associate Professor of Agronomy, Department of Agronomy, Agrl,College and Research Institute,Madurai 625 104. Tamil Nadu.
Published: October 2023

A field study was conducted to assess the suitability of short and medium duration rice varieties viz.. Vaigai and Bhavani respectively for ratoon cropping, response to nitrogen levels and, heights of cutting of the planted crop at the time of harvest. The study cle- arly indicated that Bhavani as a ratoon crop, applied with 120 kg N/ha and harvested at 20 cm.height gave the maximum yield (4851 kg/ha), Ratooning With Bhavani, besides producing higher yield, gave way of raising a short duration pulse as third crop in Perlyar-Vaigai Project area of Madurai region.
Evaluation of Hybrid Napier (NB-21) for its Forage Quality by Cell-Wall Component Analysis
Authors:   Scientist S-1 (Soil Science) Sugarcane Breading Institute,Coimbatore 641 007,Tamil Nadu., P RAKKIYAPPAN , K.K KRISHNAMOORTHY ,   Dean,Agricultural College and Reserch Institute, Madurai
Published: October 2023

An investigation was made to evaluate the forage quality of hybrid Napier (118-21) by cell-wall component analysis. The fresh yield, dry matter contert and dry matter yield increa sad, whereas, leaf to stem ratio and crude protein content decreased with crop maturity. The cell-wall components namely neutral-detergent fibre (NDF), acid-detergent fibre (ADF), acid-detergent lignin (ADL) and silica increased with crop maturity. The cell-wall components were more in stem than in leaf except silica where it was just reverse. Leaf registered more digestible dry matter per cent (DDM) than stem and the DDM % decreased with crap growth. The annual DDM yield was maximum when the crop was cut at 50 days interval.
Genetic Parameters, Associations and Path Analysis in Blackgram (Vigna mumgo (L.) Hepper)
Authors:   Scientist of AICRP (Pulses) Gujarat Agricultural University,Sardar Krishi Nagar, S.T PATEL , R.M SHAH ,   Scientist of AICRP (Pulses) Gujarat Agricultural University,Sardar Krishi Nagar
Published: October 2023

Phenotypic and genotypic coefficients of variability, heritability (broad sense), gene- tic advance, correlations and path coefficients were studied in 20 strains of blackgram Vigna mungo (L.) Hopper). Pod length and plant height were found to have high gonotypic coefficients of variation, heritability and genetic advance, High heritability in conjunction with low genetic advance was obtained for seeds per pod 100-seed weight and pods per cluster. The grain yield per plant showed significant positive correlation with number of branches, pods and clusters per plant. Path analysis revea'ed that clusters per plant had maximum positive direct effect on grain yield and it was followed by pods per plant.
Effect of Plant Density on Yield and Yield Components in sesame (Sesamum indicum L.)
Authors:   Extension Specialist Oilseeds Regional Rice Research Station Kapurthala, GUPTA TILAK RAJ
Published: October 2023

Two cultivars, viz, Pb: Til No, and TC 25 of sesame (Sesamum indicum L.)were used to study the effect of Plant density on yield and yield components. Five spacings i, e.. 30x0, 30x7.5, 30x15, 30x22.5, and 30x30cm. were used. Cultivars differed significantly with respect to flowering days, maturity days and capsules on main shoot whereas plant density produced highly significant effects on flowering days, maturity days, branches and yield, Linear and non-linear components were significant for all characters except plant height, pods on main shoot and yield. Linear relationship was observed for flowering days, maturity days; branches whereas linear to non-linear relationship was noticed for pods on main shoot, pods per plant and yield with increase in spacing fiom plant to alant. Highest yield was obtained, at 30x15cm, spacing. This spacing can be used with advantage for branched varieties of sesame in Punjab for maximum grain yield.
Enrichments of Nutrients in Organic Wastes Through Anaerobic Digestion
Authors:   Professor Head. Dept. of Farm Machinery College of Agrl. Engineering TNAU Coimbatore 3, K.R SWAMINATHAN , P RAJASEKARAN ,   Associate Professor, Dept. of Farm Machinery College of Agrl. Engineering TNAU Coimbatore 3, R MANIAN ,   Associate Professor, Dept. of Farm Machinery College of Agrl. Engineering TNAU Coimbatore 3, S KAMARAJ ,   Assitant Professor Dept. of Farm Machinery College of Agrl. Engineering TNAU Coimbatore 3
Published: October 2023

In a study on the comparison of various bio digested slurry specimens with the farm yard manure and compost. It was found that simultaneous production of manure and gas from cattle dung and organic waste was economical. Recycling of organic wastes for blogse generation as well as for production of manure appeared to be a worth while proposition to obtain maximum economic benefit.
Studies on the Varietal Performance of Exotic Sweet Potato Clones under Coimbatore Conditions
Authors:   Associate Professor, Regional Research Station,Paiyur 635 112,Tamilnadu, R RAMASWAMY , C.R MUTHUKRISHNAN ,   Dean, Faculty of Horticulture Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Among the exotic clones viz., IB 751 to 756 from Taiwan, 18 758 (W-13 of USA) and CO 1 (TNAU, Coimbatore), the clone IB 758 exceliad other clones in tuber yield and quality. The clone 18 758 has given an yield of 38.37 t/ha followed by 18 756 (Taiwan) with 37.88 t/ha compared to CO 1 33.72 t/ha. The clones 18 758 had attained signifi- cance for high ascorbic acid (18.95 mg/100 g), carotene content (12.19 mg/100 g), with high starch (47.79 per cent) compared to Taiwan lines. These clones have shown excel- lent cooking quality and less weevil incidence.
Studies on Heritability and Genetic advance in Bhendi (Abelmoschus esculentus (L) Moench)
Authors:   Research Associate,Horticultural Research Station, Kodaikanal 624103 Tamil Nadu, K PALANIVELUCHAMY , C.R MUTHUKRISHNAN ,   Dean, College of Horticulture Tamil Nadu Agricultural University Coimbatore  641 003, I IRULAPPAN ,   Associate Professor (Horti) Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Haritability and genetic advance were of lower maginitude to all the six characters studied, nearly half of the crosses exhibiting negative estimat:s. Genetic gain of per. ceptible magnitude combined with high mean expression has been recorded by the cross AE 712 x 180 for number of branches per plant. AE 593 x 180 for fuit width and AE 719 > 10% for yield of fruits and thess crosses would be useful for further selection programmes.
Coppice Productivity in Eucalyptus tereticornis sm. in relation to environment
Authors:   Associate Professor Breeder Tamil Nadu Agricultural University Coimbatore  641 003, M RATHINAM , D PAULASE ,   Associate Professor Horticulture Tamil Nadu Agricultural University Coimbatore  641 003, C SURENDRAN ,   Associate Professor Breeder Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

The Eucalyptus tereticonenis Sm plantations in Sengeerai-Arimatam and Rajendram river padugai regions showed variation not only in the growth of the seedling plantation but also in the coppice productivity. While the range in the per month growth rate of former seedling plantation varied from 0.27 cm to 0.82 cm, it was from 0.54 to 148 cm In the latter. The possibility of obtaining coppice wood yield in the padugai region in about half to two thirds the period required under semi-arid situation is indicated,. The usefulness of including the selection for coppice potential besides superior seedling crop production in the breeding programme for evolving high yielding strains has been indicated.
Induced Polygenic Mutation in Ragi" (Eleusine coracana (L.) Gaertn.)
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, T.S RAVEENDRAN , K MEENAKSHI ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, R APPADURAI ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Two ragi genotypes MS 2698 (Bihar) and Sarada (Andhra Pradesh) were treated with N-methyl-N-nitroso N-nitroguanidine, The mean, genetic variance, heritability and genetic advance were estimated in the M_{1} and M_{3} generation of these treated genotypes for seven metrical traits. In general, the mean values of most of the treatments in M and M_{3}' did not substantially deviate from the control, There was, an increase in the genetic variance both in the M_{2} and M S - The M_{3} variance of plant height was higher than that of M * . For all the other characters studied, the M_{3} variance was less than the M + variance. The heritability and genetic advance values were higher in the treatmer.ts than in the Control. Short duration mutants in Sarada and bold-seeded mutants in MS 2698 were obtained as a result of these investigations.
Comparison of Forage Cropping Systems in the Oxisol of Kerala
Authors:   Dept of Agronomy Kerala Agricultural University Vellanikara,Trichur 680 654, R VIKRAMAN NAIR , M.S NAIR ,   Dept of Agronomy Kerala Agricultural University Vellanikara,Trichur 680 654, M ABDUL SALAM ,   Dept of Agronomy Kerala Agricultural University Vellanikara,Trichur 680 654
Published: October 2023

An experiment conducted to campare the productivity of a few forage cropping systems and to study the feasibility of mixing cowpea with annual cereals and perennial grasses, in the laterite soils of Kerala revealed that among the grasses, hybrid napier was superior in terms of forage and crude protein yields followed by guinea grass. Mixing cowpea with perennial grasses (hybrid napler and guinea grass) does not appear to be compatible at the normal spacing of the grassos, Cowpea mixes well with the annual cereals (maize and sorghum) but the yields of these crops and crop combinations are comparatively low.
Interrelationship between forms of Magnesium in the Nilgiris soils
Authors:   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, K.K MATHAN , K CHIRANJIVI RAO ,   Agriculrural Chemist, Sugarcane Breading Institute,Coimbatore 641 007,Tamil Nadu.
Published: October 2023

Interrelationships among the various fractions of magnesium and their relationship with total magnesium wero observed. As the total magnesium increased, its component free- tions also correspondingly increased. The relationship between total Mg and both organo- complexed Mg and reserve (acid-soluble) Mg was linear. The relationship between reserve Mg and both organic-complexed Mg and mineral Mg was significantly positive and quadratic.
Multivariate analysis of genetic divergence in blackgram (Vigna mungo) (L.) Hepper.)
Authors:   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, A.S SHANMUGAMI , S.R SREE RANGASAMY ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Forty five types of blackgram were grouped into ten clusters with the aid of Mahalanobis's D statistic bringing out the presence of wide genetic diversity. The clus- tering pattern indicated that the geographic diversity was not the only factor for determining the genetic diversity. The intercluster distance between the type No.55 and the types in the cluster VII were found maximum. The clustering pattern of the more or less confirmed with the clustering pattern of the canonical (Vector) analysis carried out with the same data. Among the characters yield plant contributed to the maximum towards the genetic divergence.
Studies on Induced Chlorophyll Mutations in Cajanus cajan (L.) Mill. Sp.
Authors:   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, N NADARAJANI , R SETHUPATHI RAMALINGAM ,   Principal, Krishi Vigyan Kendra Pondicherry, N SIVASAMY ,   Assitant Professor of Botany,Agricultural College and Research Institute,Madurai 625104 TamilNadu.
Published: October 2023

In the study of induced chlorophil mutations with two varieties of redgram (Cajonus cajan), the frequencies Increased with increasing doses of mutagens up to middle doses and thereafter decreased. Multiple chlorophyll mutants comprising two types - were more frequent than single and three types. The pooled segregation ratios did not show any dose dependency. None among the segregating progenies showed the theoretical expected proportions of 25 per cent of recessive mutants. The spectrum of chloropyll mutants consisted of albina, xantha chlorina and viridis. Chlorina and viridis were the predominant types in 'gamma rays DES treatments respectively.
Investigations on induced macromutants in Cajanus cajan (L.) Mill sp
Authors:   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, N NADARAJANI , R SETHUPATHI RAMALINGAM ,   Principal, Krishi Vigyan Kendra Pondicherry, N SIVASAMY ,   Assitant Professor of Botany,Agricultural College and Research Institute,Madurai 625104 TamilNadu.
Published: October 2023

In a study of induced mutagenesis in Cajanus cajan, the frequency of macromutants increased with increasing doses of mutagens up to certain level and thereafter decreased. DES and Ihma rays were potent in inducing macromutants in SA. 1 and CO. 2 respectively In both the varieties mutants-affecting duration wore more frequent. Economically useful- mutants possessing increased number of pods per plant, dwarf habit, earliness, uniform maturity and bold sood size were isolated indicating the scope for improving redgram through induced mutagenesis coupled with conventional breeding procedures.
Study on the Response of Greengram (Co. 3) to Growth Regulators
Authors:   Assitant Professor, Agricultural Research Station Tamil Nadu Agricultural University, Bhavanisagar 638 541 Tamilnadu., P SUBBIAN , A CHANY ,   Professor and Head, Agricultural Research Station Tamil Nadu Agricultural University, Bhavanisagar 638 541 Tamilnadu.
Published: October 2023

Field experiments were conducted to study the response of growth regulators (Planofix and ethrel) on growth and yield of greengram Co. 3. From the result it was found that foliar. application of planofix 40ppm followed by planofix 20ppm and ethrel 100ppm and pianofix 40ppm followed by ethrel 50ppm and planofix 20ppm increased significantly the grain yield and yield attributes of greengram during summer and kharif, 1981 respectively.
Studies on rice bran and rice bran oil IV. Nutritive Value of Rice Bran
Authors:   Associate Professor, Soil Science Tamil Nadu Agricultural University Coimbatore  641 003, V.V KRISHNAMURTHI , U.S SREE RAMULU ,   Professor, Soil Science Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Regarding the mutrient content of bran, parboiling had a positive significant influe nce on the crude protein content. The bran was found to contain 29.63 to 43,28 per cent of DDM. Among the varieties. GEB 24 registered better DDM per cent than others. TANU 13263/7/2. TNAU 15869 2 and TNAU 20892 could be considered to be good in terms of oil content and nutritive value.
Distribution of magnesium fractions in the Nilgiris soil profiles. III Distribution in typic hapludalfs, ultic. hapludalfs, typic paleudalfs and plinthic paleudalfs.
Authors:   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, K.K MATHAN , K CHIRANJIVI RAO ,   Agriculrural Chemist, Sugarcane Breading Institute,Coimbatore 641 007,Tamil Nadu.
Published: October 2023

Soils of the sub-group Typic Hapludalfs contained high reserve magnesium, Organic complexed Mg might be the probable source of additinal magnesium to the surface layers. The profiles of the Ultic Hapludalfs were characterised by strongly weathered top soil lying" over weakly weathered sub-soils. Accumulation of magnesium fractions were seen in horizons of clay pan and in some profiles leaching conditions were indicated. The soils of Typic paleudalfs were highly weathered. Distribution pattern of the fractions of magnesium were observed to be influened by the combined effect of weathering, leaching and organic cycle, plinthic paleudalfs soils contained higher amounts of reserve magnesium Well weathered surface soils were lying over weakly weathered parent material. These characters indicated that there need not be any alarm about deficiency magnesium in the near future.
Effects of Insect Control on the Economic Returns in Riec
Authors:   Agricultural Research Station Warangal 506 007, N VENUGOPAL RAO , B.H KRISHNAMURTHY RAO ,   Dean of Agriculture A.P Agricultural University Hyderabad, P SATYANARAYANA REDDY ,   Agricultural Research Station Warangal 506 007, V.L.V PRASADARAO ,   Agricultural Research Station Warangal 506 007
Published: October 2023

Through field trials conducted in three consecutive seasons, Kharif, Rabi 1979-80 and Kharit 1980, in gains yields, due to insect pest control at different crop phases, were estima- ted. Three different insecticidal schedules consisting of carbofuran followed by quinalphos or monocrotophos and their combinations were evaluated for their efficacy, importance and economical value. The gain when protected at reproductive phase (P,) ranged from 20. 209% over control while when protected at maturity (P.) the gain observed was 25 to 97% Protecting the crop only at tillering phase (P) was found uneconomical. The monetary loss varied from Rs. 284 to 782 per hectare, Additional gains have been realised, when P, was either preceded by P, or followed by Ps. In Rabi season, P, assumed as much importance as P, but either of the two only was economically feasible,
Effect of Fungicidal Treatments on Seed-Mycoflora of Lycopersicon esculentum Mill.
Authors:   Department of Botany, Govt P.G College Kashipur Naintial, I.D SINGH , S.K GURURANI ,   Department of Chemistry, Govt P.G College Kashipur Naintial, K.N PANDEY ,   Department of Botany, Kumaun University Campus Almora 263601, R.C GUPTA ,   Department of Botany, Kumaun University Campus Almora 263601
Published: October 2023

Ten fungicides, each in three concentrations, were tested against the sood mycoflora and percent germination of seeds of Lycopersicon esculentum, Amongst the fungicides tested, Phalton 50w, at 100 ppm, showed the best result inhibiting all the fungi associated with the seeds and had no adverse effect on seed garmination, whereas, Cyprex showed its toxic effect on seed germination along with inhibition of all the fungi-associated with the seeds, Other fungicides showed varied effects.
Studies on Seed Quality with Reference to Position of Bolls in Cotton Variety MCU 5
Authors:   Department of seed  technology Tamil Nadu agricultural University Coimbatore-3, C.P THIAGARAJAN , K.R RAMASWAMY ,   Department of seed  technology Tamil Nadu agricultural University Coimbatore-3
Published: October 2023

Experiments conducted during winter 1976 and summer 1975 seasons with the CV, MCU 6, revealed that the quality of sead differed significantly among the bolls in a plant. Based on the parameters like percentage of seed recovery, matured seed, seed index germination and vigour, it was concluded that the kapas (seed cotton) obtained from the first 7 sympodia can be earmarked for seed in both winter and summer seasons et Coimbatore conditions.
Mutagenic Effects on Chlorophyll Mutation Frequencies and Spectrum in Rice
Authors:   Regional Research Station, Vridhachalam 606 001., G NALLATHAMBI , V.D GURUSWAMY RAJA ,   Dean (P.G) Studies TNAU, Coimbatore 3
Published: October 2023

Seeds of the rice variety Co 37 were subjected to gamma rays and EMS alone and in combination with two treatments. The effects of frequency and spectrum were studied. The frequency of mutations estimated as number of mutants per 100 My spikes was as- efficient as the number of mutants per 100 M, plants. Gamma rays proved more potent in inducing chlorophyll mutations than EMS. The combination of treatments induced a higher frequency of chlorophyll mutations than individual treatments showing antagoni stic effect on M, spike and additive effect on M, seedling basis, Regarding the spectrum. of chlorophyll mutations gamma rays induced Albina, Xantha and Striate types, whereas EMS and combination treatments produced Virescent in addition to three types obtained through gamma rays. Albine and Xantha occurred more frequently than other types in all the treatments but the combination treatments produced more Albina than individual treatments.
Multilocation Performance of Greengram (Vigna radiata (L). Wilczek) Cultivars in Tamil Nadu
Authors:   Associate Professor  School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S KRISHNASWAMY , R RATHNASWAMY ,   Associate Professor  School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

The interaction of genotypes with environment for grain yield was studied by growing four genotypes of greengram in three locations ever two years under rainfed conditions, and the genotype-environment interactions were found to exist. Mutant-2 was found to show high phenotypic stability, and also high yielding in all the environments. Development of high yielding line coupled with stability over the environments through mutation breeding is indicated.
Studies on Genetic Variability in Sesamum (Sesamum indicum L.)
Authors:   Department of Agricultural Botany, Agricultural College and Reserch Institute,Madurai, M.S THANGAVELU , S RAJASEKARAN ,   Department of Agricultural Botany, Agricultural College and Reserch Institute,Madurai
Published: October 2023

Phenotypic and genotypic coefficients of variation, heritability (B. S) and genetic advance were assessed in 40 genotypes of sesamum (Sesamum indicum L.), the differences between the types were highly significant for all the nine characters studied, The heritability estimates for all the characters were high. Branch number, capsule number and seed yield recorded higher values of PCV, GCV, heritability (B. S.) and genetic advance as percent over mean. Selection based on these characters would be more useful in the improvement of this crop.
Effect of Sowing Time, Spacing and Nitrogen. Levels on Yield of Irrigated Cotton
Authors:   Junior Scientist (Agronomy) Regional Agricultural Research Station,Morena M.P, U.K SHRIVASTAVA , M.L SHARMA ,   Junior Scientist (Agronomy) Regional Agricultural Research Station,Morena M.P, K.N NAMDEOS ,   Scientist Argonomy Regional Agricultural Research Station,Morena M.P
Published: October 2023

Field experiments were conducted in kharif seasons of 1978 and 1979 at Central Research. Farm, Agriculture College, Gwalior, with Bikaneri Narma cotton. Three sowing dates (7th May. 22nd May, 7th June) as main plot treatmeuts, were tried with three spacings (60x15, 60x30 and 60x45 cm) and three levels of nitrogen (0, 40, 80 kajha) as sub-plot treatments. The yield and yield-attributing chara:t.rs were favourably influ enced by early sowing, narrow spacing and high N-levels The sowing, of 7th May with 60X15 cm spacing and 80 kg/ha were found to be optimum for sandy-loam soil.
Effect of Nitrogen, Row Spacing and Seeding Rate on the Yield of Wheat under Late Sown Conditions
Authors:   Agricultural Research Station, Durgapura Jaipur, LAI MAKKHAN , S.S BHARGAVA ,   Dept of Agronomy  University of  Udaipur 313 001
Published: October 2023

A field trial was conducted for three consecutive years in rabi season of 1977-78, 1978-79 and 1979-80 at Agricultural Research Station. Durgapura to study the effect of nitrogen levels, row spacing and seeding rate on the yield of wheat under late sown conditions, Highest grain & straw yield was obtained with 90 kg N/ha and closer spacing ie 15cm apart. Different seed rate could not impart any significant effect on grain and straw Yield.
Extent of Quality Alteration in low Temperature Parboiling Cum Vacuum Drying in Paddy
Authors:   Paddy Processing Research Centre, TNAU Tiruvarur 610 001, P PILLAIYAR , R MOHANDOSS ,   Paddy Processing Research Centre, TNAU Tiruvarur 610 001
Published: October 2023

The intensity and duration of heat treatment during parboiling and drying influence the quality. The extent of quality change in low temperature parboiling cum vacuum dry. ing was studied. Three varieties of paddy was parboiled at 200 and 90°C by closed heating for 10min and dried under vacuum at 80°, 90°, 100 and 120°C. The hydration pattern, alkali test value, optimal cooking time, linear elongation and breadthwise expansion in cooked kernel and the palatability were determined, The EMC-S of paddy right after parboiling/ vacuum drying was also determined, Samples parboiled at low temperatures sustained less quality alteration than in the customary open steamed peddy. Rapid vacuum drying by main- taining a high temperature did not alter the quality to such an extent as happened in hot-air drying. Perceptible quality change had occurred only when the grain moisture fell below 17% The starch retrogradation accompanying low temperature parboiling as well as vacuum drying was minimal; the cooking and eating qualities of these samples were comparatively better.
Use of Linear Measurements in the Estimation of Leaf area in some Varieties of Apple
Authors:   Horticultural Research Station, Kodaikanal 624103 Tamil Nadu, N KUMARI , R ARUMUGAM ,   Horticultural Research Station, Kodaikanal 624103 Tamil Nadu, S NATARAJAN ,   Horticultural Research Station, Kodaikanal 624103 Tamil Nadu
Published: October 2023

The leaf (constant) factor "K" of twelve apple varieties was calculated. The difference between observed and estimated leaf area was less than 0.50 per cent in all the varieties, The observed leaf area was highly correlated with estimated leaf area. Hence, the leaf area of apple varieties can be calculated by obtaining the product of leaf length breadth and "K" fector. The "K" factor varied with the varieties. However, the 'K' factor for apples can be teken as 0.744.
Crop-Weed Competition in Tomato
Authors:   Associate Professor and Professor Head  Department of Agronomy, Agrl,College and Research Institute,Coimbatore, A RAJAGOPAL , S SANKARAN ,   Associate Professor and Professor Head  Department of Agronomy, Agrl,College and Research Institute,Coimbatore
Published: October 2023

In a study on crop-weed competition in tomato the effect of different weed free periods was evaluated. The flora comprised mainly of seed geminating dicotyledonous and monocotyledonous weeds, Weeds almost smothered the crop in unweeded control and in the treatment where weed free condition was provided only for 15 days. Growth characters and yield attributes were adversely effected in these two treatments. Weed free environment for more than 30 days did not improve the yield of marketable fruits. The critical weed free period for tomato was upto 30 days from transplanting.
Forms and Amounts of Soil Phosphorus- An Indication of Chemical Weathering
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, K.K MATHAN , D RAJ ,   Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

The formation and transportation of the various phosphate species according to the chemical principle of solubility product. following the order, calcium, aluminium and occluded phosphates, corresponding to the increasing stages in a weathering sequence, are due to differences in stability. As the soils of Nilgiris district are found under a wide range of rainfall and elevations, a study of the various stages of chemical weathering wag undertaken. It showed that weathering has been hindered at one stage of chemical weathering or the other in many places. Some soils were in advanced stages of chemical weathering.
Influence of Some Pesticides on the Availability of Nutrients to Brinjal (Solanum melongena)
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, P SINGARAM , T.S MANICKAM ,   Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

The study revealed that when pesticides viz.. aldicarp. carbofuran, di-syston and phorate, applied through the soil to control the insect pests of brinjal crop. the availability of nitrogen (nitrate and ammonium nitrogen) increased to some ex tent and then decreased; no drastic increase or decrease in the case of available phosphorus and sulphur. The results showed that when the pasticides were applied at recommended doses through the soil, the availability of soil nurients to brinjal were not affected very much.
Studies on Genetic Diversity in Fox-Tail Millet (Setaria italica Beauv.)
Authors:   Research Associate Department of Agricultural Botany, Agricultural College and Reserch Institute,Madurai, K NAGARAJAN , M.N PRASAD ,   Sorghum Breeder (AICSIP) Department of Agricultural Botany,Coimbatore 641003
Published: October 2023

Fifty genotypes of fox-tail millet (Seteria italica Beav.), the genetic diversity by Mahalanobis'D analysis and to identify the various contributing factors for the genetic divergence. A wide genetic diversity was revealed by the D, analysis wherein the fifty genotypes fall into as many as fifteen clusters. The geographic distribution was not related to genetic diversity. Genotypes chosen from the same eco-geographic region were found scattered in different clusters. This points to the availability of wide genetic variability in types from the same eco-geographic region. Based on the average inter cluster distances (D), the clusters XV. XIV and XII were found to be highly divergent from the others. The type ISe 380 (Cluster 1V) was superior for grain weight, panicle length. number of branches, piant height and straw yield. The type ISe 207 (Cluster VIII) Rankod first in grain yield while ISe 10 (Cluster XIV) was earlier with regard to number of days to half bloom. Utilizing these types which are highly divergent is likely to result in wide spectrum of variability through hybridization. The rank total analysis disclosed that number of branches. grain yield. panicle length and grains per branch contributed. maximum to genetic divergence.
Microbiological Changes Accompanying Degradation of Water Hyacinth in an Anaerobic Digester
Authors:   Department of Agricultural Microbiology,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, P RAJASEKARAN
Published: October 2023

It is well known that certain aquatic plants like Eichhornia crassipes (Water hyacinth), Ipomoea repens. Salvinia bilobe and S. auriculata (the floating ferns) and cer tain other grasses that grow in waste water have not only the ability to proliferate pro- fusely in a short period but also the capacity to absorb considerable amounts of nutrients. The chopped materials, if properly blended with cow-dung and allowed to ferment anaerobically, could generate methane rich biogas for cooking, lighting and other purposes (Singh, 1978). Since water hyacinth is very rich in protein and nutrients, it has consider- able promise in the area of biogas production. It is of interest to study the distribution of various microbial populations in an anaerobic digester incorporated with this weed along with cowdung and old slurry in relation to biogas generation. Hence this experiment was carried out to study the role played by microorganisms in the bioconversion of digestive waste materials.
Genetic Evaluation and Path Analysis in Amaranthus
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, S.R SREE RANGASAMY , S SAMBANDAMURTHI ,   Tamil Nadu Agricultural University Coimbatore  641 003, M MURUGESAN ,   Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Estimates of genetic parameters, genotypic correlation coefficient and path analysis were made on seedling performance with 19 different genotype collections in Amaranthus sp. which is the chief source of green leafy vegetable in tropics. This study of seedling population for green leafy yield and its components was made during April and July seasons in 1976. The studies brought out significant differences among genotypes in respect of the yield components and also higher extent of variation as revealed by genetic estimates. The variation was high in length of stem and weight of plants followed by number of leaves, All these characters offered scope for selection in that order mentioned only, as inferred from estimates of H and GA. The genotypic correlation. was higher than phenotypic correlations in both the seasons. However, in respect of number of leaves per plant and weight of stem the relationship got reversed i.e. pheno- typic correlation was higher than genotypic in April as compared to July sowing. The direct effect of length of stem on yield as shown. by path analysis also was reversed in April season as compared to July season. The investigation also brought out the existance of strong Genotype x Environment (G x E) interactions in the diverse genetic population of Amaranthus.
Effect of NAA and N Levels on Yield and Quality of MCU 9 Cotton
Authors:   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, R JAGANNATHAN , M.R IRUTHAYARAJ ,   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003
Published: October 2023

An experiment was conducted at the Tamil Nadu Agricultural University, Coim- batore, in the winter season of 1978 on MCU 9 cotton to study the effect of NAA and N on cotton. The treatments included six NAA treatments in the main plots and four N levels in the sub plots. The results of the experiment revealed that NAA and N levels significantly influenced the yield attributes and yield and not the quality char- acters. Higher seed cotton yield was achieved with 60 kg N/ha and application of 30+30 ppm NAA (1716 kg/ha) or with 30+ 20 ppm NAA (1713 kg/ha) applied at flower initiation and 15 days later.
Influence of single and Multistrain Rhizobial Inoculants on Nodulation, Yield and Nitrogen Assimilation by Greengram (Phaseolus aureus Roxb)
Authors:   Department of Agricultural Microbiology,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, A BALASUBRAMANIAN , J PRABAKARAN ,   Department of Agricultural Microbiology,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, S.P SUNDARAM ,   Department of Agricultural Microbiology,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: October 2023

Field perfomance of the rhizobial inoculants. GG-2. GMBS-1, BMBS-P47 and an equal mixture of these three strains (multistrain inoculant) were studied in greengram at Coimbatore and Kaveripattinam under rainfed conditions and Bhavanisagar under irrigated condition. The nodulation, yield and nitrogen assimilation responses of greengram were observed. At all the three locations, the multistrain rhizobial inoculant performed better with significance. They produced more number of nodules per plant, higher grain yield and more nitrogen assimilation than the uninoculated control and the single strain rhizobial inoculants.
Response of Cowpea (Vigna sinensis L.) (Savi) to Phosphorus and Growth Regulators
Authors:   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, R JAYARAM , S RAMIAH ,   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003
Published: October 2023

A study on the effect on phosphorus and growth regulators on grain yield of cowpea showed that application of 26,9 ky P. Os/ha as economically optimum. It also revealed that foliar application of planofix at 40 ppm twice at stray and peak flowering stages of the crop increased the grain yield by 9.7 per cent over control with a net return of Rs. 1.742/ha.
Biological Effects and Chlorophyll Mutations Induced by NG. Ragi
Authors:   Dept.of Agrl,Botany,TNAU,Coimbatore, S RAVEENDRAN , K MEENAKSHI ,   Dept.of Agrl,Botany,TNAU,Coimbatore, R APPADURAI ,   Dept.of Agrl,Botany,TNAU,Coimbatore
Published: October 2023

Two ragi varieties viz.. MS. 2698 (Bihar) and Sarada (Andhrapradesh) were treated with N-methyl-N-nitroso N-nitroguanidine. The germination, survival and seedling height at transplanting got reduced as the dose of the mutagen increased in both the varities. MS. 2698 showed a higher percentage of sterility than Sarada consquent on the chemical treatment. The LD 50 based on survival was around 10 mM for MS. 2698 and 5 mM for Sarada. The chlorophyll mutation frequency estimated on M, seedling basis was much less than that estimated on My spike basis. Sarada recorded greater mutation frequency than MS. 2698. There was a varietal difference in the spectrum of mutation also. The variety Sarada recorded albino types besides xantha and viridis types. A higher percentage of tigring was also observed in Sarada as compared to MS. 2698. The mutagenic effectiveness and efficiency were conferred by the same dose 5 mM for two hours of chemical soaking.
Correlation Studies in Tall and Dwarf indica Rice Varieties
Authors:   Assitant Professor School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, K.S PARAMASIVAN
Published: October 2023

Correlation study taken up with 15' tall and dwarf indico rice varieties showed that panicle length and chaff number per panicle were correlated with yield. Grain number and number of panicle per clump were correlated to grain yield only in few varieties. Hundred grain weight was not correlated with yield. Grain breadth, length and plant height were also related to yield.
Cytogenetic Studies in Non-Tuberous Solanum Species, Hybrids and Amphiploids
Authors:   Ithanagar Tenall Andhra Pradesh, N NARASIMHA RAO , B.W.X PONNAIYA ,   10,Mandaveli Street Madras 28, P MADHAVA MENONS ,   Diretorate of Millets Development University of Madras
Published: October 2023

All the ten taxa studied revealed a regular course of meiosis. The twentyfour hybrid. produced fell into six groups depending upon the nature of meiosis and the extent of pollen fertility in them, irregularities in the form of non-orientation of bivalents on metaphase plates, anaphase bridges, laggards and unequal distribution of chromosomes at anaphase I were observed in the hybrids. The six amphidiploids produced by colchicine treatment from the hybrids representing all the six groups led to the conclusion that sterility observed in respective hybrids was mainly due to cryptic and gross structural differences of which the former appeared to be more predominant.
Some Economic Characteristics of Mixed Farming in Coimbatore District
Authors:   Dept of Agricultural Economics Tamil Nadu Agricultural University Coimbatore 641003, BALAKRISHNAN BALAKRISHNAN
Published: October 2023

A study was undertaken to investigate the economics of mixed farming in Coimbatore district and it revealed a close relationship between size of farming and type of farming. It is necessary that fermers are educated and encouraged to improve the breed stock, feeding methods and production technique so as to make mixed farming more productive. In view of the periodic monsoon failures and depletion of ground water, mixed farming is less risky and has to be adopted widely to improve the economic conditions of the farmer. A past of land should be set apart exclusively for fodder production to improve the stock of cattle and increase the overall income.
Effect of Initial Moisture Content on Infiltration in an Orissa Soil
Authors:   Lecturer and Dean Respectivety. College of Agricultural Engineering & Technology Bhubaneswar 751003, P.C SENAPATI , P.K MISHRA ,   M.Tech Student at Indian Institute of Technology Kharagpur, R LAL ,   Lecturer and Dean Respectivety. College of Agricultural Engineering & Technology Bhubaneswar 751003
Published: October 2023

Effect of initial moisture content on Kostiakov-Lewis type infiltration equation was studied in a soil in Orissa. The relationship between constant K. exponent, n and initial moisture content, X has been shown in a form of graph. A methematical relation- ship between accumulated depth of infiltration for the period of 30 minutes and moisture content has been developed.
Effect of Phosphorus and Growth Regulators on Flower Shedding of Cowpea
Authors:   Research Associate in Agronomy, Agricultural Research Station,Kovilpatti 628 510 Tamilnadu., R JAYARAM , S RAMIAH ,   Professor of Agronomy, Farm science Centre, Tiruchirapalli 620 009
Published: October 2023

Field experiments were conducted to study the effect of phosphorus and growth regulators, viz., Planofix (NAA) and ethrel on flower shedding in PLS 370 cowpea. The result showed that application of 25 kg P. Os / ha, Planofix at 40 ppm and ethrel at 100 and 150 ppm significantly reduced the percentage of flower shedding in cowpea in summer.
Association Analysis in Desi Cotton (G. arboreum L.)
Authors:   Department of Plant Breeding Haryana Agricultural University,Hissar 125004, R.S WALDIA , D.S JATASRA ,   Department of Plant Breeding Haryana Agricultural University,Hissar 125004
Published: October 2023

Yield of seed-cotton was positively correlated with ginning out-turn but negatively with halo length. Lint index showed positive association with seed index and ginning out-turn. Halo length had, on the other hand, negative relationship with lint index. It was evident from the path analysis that lint index and ginning out-turn were the most important components of yield of seed-cotton in arboreum cotton.
Cotton-based cropping system for Coimbatore Region
Authors:   Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, SP PALANIAPPAN
Published: October 2023

An experiment was conducted for a period of two years from 1977 to 1979 to study the performance of different cropping systems under gardenland conditions with varying levels of soil fertility. Four cropping systems were raised under three levels of fertility and economics worked out. The results indicated that sorghum + greengram cotton + onion- radish - blackgram gave the highest net income of Rs. 13,100/ha/year followed by ragi - cotton onion sorghum + lablab systems (Rs. 6860/ha/year). Wherever facilities for marketing the vegetable exists, the former can be recommended and in other places the latter can be recommended. There was no difference in yield of crops due to fertilliy levels indicating that by including legumes in the cropping system and with proper residue management, it is possible to save adout 25% of NPK recommended to the crops included in the systems.
Production Potential of Wheat, Mustard and Gram under Resource Constraints
Authors:   Agricultural Research Station, Durgapura Jaipur Rajastan, SINGH VED , D.R RAWAL ,   Agricultural Research Station, Durgapura Jaipur Rajastan
Published: October 2023

A field trial was conducted for rwo consecutive rabi seasons during 1977-78 and 1978-79 at Agriculture Research Farm (Borwat) Banswara, Rajasthan, to study the producton potential of wheat; mustard and gram with inputs like fertilizer and irrigation in limited supply Results indicated that neither irrigation nor fertilizer levels caused any significiant variation in grain yield of mustard and gram during both the years. In the case of wheat similar result was obtained during 1977-78 but in 1978-79 k decreased when fertilizer dose was reduced.
Influence of Moisture and Added N on P Availability
Authors:   Agricultural Research Station,Bhavanisagar 638 541 Tamilnadu., P MUTHUVEL , K.K KRISHNAMOORTHY ,   Agricultural College and Reserch Institute, Tamil Nadu Agricultural University Madurai 625 104
Published: October 2023

The influence of soil moisture regimes, doses of added N and their interaction on the quantum of available P was investigated under pot and field conditions in red and black soils of Tamil Nadu with Co. 10 ragi as test crop at Tamil Nadu Agricultural University, Coimbatore. The available P content of soils in general was affected by the moisture regimes. Higher doses of N reduced the available P content. Response to the variables introduced were more pronounced in red soil than in black scil and the available P decreased with crop growth.
Soil Physical Problems in Coimbatore District
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, V RAVIKUMAR , T.M THIYAGARAJAN ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

Soil profile studies in Coimbatore District revealed occurrence of physical problems like poor infiltration rate of water and impeded drainage conditions in Peelamedu, Dasarapatti and Perianaickenpalayam series. Soils of Irugur, Palladam, Syamalakavundanpudur and Vanna- patti series showed high infiltration rate and poor aggregate stability. Soils of Peelamedu, Perianaickenpalayam, Pichanur and Tulukkanur series showed high sub-soil bulk density affecting proliferation of roots of crops. Dispersed soils with high alkalinity occurred in Peelamedu series. The soils of Vannapatty. Syamalakavundanpudur and Peelamedu series were low in organic matter content. Soil map indicating the areas of soil physical problems wasprepared and suitable ameliorative measures are discussed.
Dissipation of Monocrotophos Residues in Black gram Husk and Grains
Authors:   Cashew Research Station Vridhachalam, S MANOHAR , M BALASUBRAMANIAN ,   Department of Agricultural Entomology Tamil Nadu Agricultural University Coimbatore  641 003
Published: October 2023

The residue of monocrotophos in husk and grains of black gram was analysed by harvesting at two different periods, (12 and 20 days) after spraying both by colorimetry and bio-assay methods. The residues of monocrotophes were at non-detectable levels in husk even on 12th day after spraying. The residues in grain were below 0.2 ppm which is the tolerance limit for beans when assayed chemically at both periods. However, the residues were slightly above the tolerance limit both at 12 days and 20 days after spraying when determined by blo-assay. The study indicated that a minimum waiting period of 20 days is necessary for safe consumption.