bluuebunny/crossref_metadata_2025 huggingface dataset:
EFFECT OF CONTINUOUS MANURING AND FERTILIZATION ON THE FRACTIONS OF SOIL POTASSIUM
Authors:   Agricultural College and Research Institute,TNAU, Madurai 625 104, C UDAYASOORIAN , U.S SREE RAMULU ,   Agricultural College and Research Institute,TNAU, Madurai 625 104, K.K KRISHNAMOORTHY ,   Agricultural College and Research Institute,TNAU, Madurai 625 104
Published: September 2023

The surface and sub-surface samples from the Permanent Manurial Experiment being conducted at Madurai analysed for various fractions of soil potassium to assess the infiuence of continuous manuring and fertilization over eight year period revealed that continuous organic manuring significantly increased the fixed K, exchangeable K and available K in the surface as well as in sub-surface soils. Among the organics, FYM increased the water soluble K fraction appreciably whereas the fixed K, available K and exchangeable K fractions were significantly more in compost applied plots, Continuous application of green leaf manure did not influence the different fractions of K.
EFFECT OF FUNGICIDES AND INSECTICIDES ON Rhizobium AND Rhizobium COWPEA SYMBIOSIS
Authors:   Centre for Plant Protection Studies, Tamil Nadu Agricultural University Coimbatore  641 003, S RAMADOSS , K SIVAPRAKASAM ,   Centre for Plant Protection Studies, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Among the pesticides tested on the Rhizobium-cowpea symbiosis carbendazim-+ carbosulfan showed considerable increase on the growth of Rhizobium. Interestingly seed treatment with carbendazim, carbendazim + carbosulfan and carbosulfan was compatible with Rhizobium and had no inhibition on the nodulation. All the seed dressing pesticides along with Rhizobium inoculation exhibited better nodulation than the uninoculated control.
EVALUATION OF EXPERIMENTAL DESIGNS TO TACKLE INTERPLOT DISPERSAL OF INSECTS
Authors:   Indian Institute of Agricultural Research,Bangalore 560 089, P.R RAMACHANDER , K SRINIVASAN ,   Indian Institute of Agricultural Research,Bangalore 560 089, G.S.P RAO ,   Indian Institute of Agricultural Research,Bangalore 560 089, P.N KRISHNAMOORTHY ,   Indian Institute of Agricultural Research,Bangalore 560 089
Published: September 2023

Efficacy of 0.01% fenvalerate, 0.07% endosulfan and 0.1% dichlorvos for the control o! Plutella xylostella on cabbage was evaluated using three experimental designs viz.. randomized block, serial block and exploded biock design. The results indicate probability of incorrect inferences that could be drawn for efficacy reports when randomized block design and serial block design are followed due to interplot movement of insects. Based on the results obtained, suitability of adopting modified exploded block design which has limited interplot movement has also been indicated for testing insecticides with varying efficacy.
ALR. 1 DISEASE RESISTANT GROUNDNUT VARIETY
Authors:   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, G.A PALANISAMY , R RAJASEKARAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, K PARAMASIVAM ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, L.D VIJANDRA DOSS ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, G RAMAKRISHNAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, M JAYASEKHAR ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, B SUBBALAKSHMI ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S GIRIDHARAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

An improved groundnut strain ALR. 1 was released for cultivation in Pollachi tract of Tamil Nadu. This was developed from the cross POL. 2x PPG. 4. The new strain is resistant to rust and late leaf spot diseases coupled with yield.
A NEW HORSEGRAM VARIETY PAIYUR 1 FOR SEMI-ARID TRACTS OF TAMIL NADU
Authors:   Regional Research Station,, Paiyur 635 112 Tamil Nadu., A NARAYANAN , M SURESH ,   Regional Research Station,, Paiyur 635 112 Tamil Nadu., P VAIDYANATHAN ,   Regional Research Station,, Paiyur 635 112 Tamil Nadu.
Published: September 2023

Paiyur-1, a new horsegram variety with yield potential of 723 kg of grain and 1067 kg of husk was released for cultivation in the marginal and submarginal drylands. It has tolerance to yellow mosaic and root rot.
NUTRIENT UPTAKE OF FINGER MILLET AS INFLUENCED BY INTERCROPS, BORDER CROPS AND N FERTILIZATION
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, K SIDDESWARAN , C RAMASAMY ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, Y.B MORACHAN ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Five crops sorghum, sunflower, lady's finger, onion and cluster beans were tried both as intercrops and border crops in finger millet with three levels of N (70, 90 and 110 kg/ha). N, P and K uptake. by finger millet was affected markedly by the intercrops then the border crops. Sunflower as an intercrop competed for nutrient with finger millet to a greater extent followed by sorghum and the influence of onion and clusterbeans was minimum. Finger millet-sorghum combi- nation removed maximum N and sunflower association depleted more of P and K. Increased N application was found to increase the uptake of nutrients.
VARIETAL INTERACTION IN REDGRAM-RHIZOBIUM SYMBIOTIC ACTIVITIES IN THE ACID LATERITIC SOILS OF VAMBAN
Authors:   National Pules Research Center, Vamban Colony- 622 303, Pudukottai, J PRABAKARAN , K RAMASAMY ,   National Pules Research Center, Vamban Colony- 622 303, Pudukottai
Published: September 2023

Poor nitrogen content due to soil reaction is one of the problem: in Vamban soil series. Different rhizobial strains were screened fo: their performance with different cultivars of redgram. Rhizobial see bacterization enhances the nodulation, plant biomass and grain yiel in different cultivars of redgram under acid lateritic soil of Vamban. Among the cultivars, maximum grouth, nodulation and yield attributes were recorded with T 21 followed by CO 5 and A 3-1. Due to inoculation with rhizobia redgram seed yield was increased from 16.66 to 58.335 over uninoculated control.
EFFECT OF IRRIGATION REGIMES AND NITROGEN LEVELS ON RICE VARIETIES UNDER TRANSPLANTED CONDITION
Authors:   Dept of Agronomy,Agricultural College and Research Institute, Madurai 625 104 Tamil Nadu, A PALCHAMY , S.D SUNDAR SINGH ,   Dept of Agronomy,Agricultural College and Research Institute, Madurai 625 104 Tamil Nadu, A RAJAGOPAL ,   Dept of Agronomy,Agricultural College and Research Institute, Madurai 625 104 Tamil Nadu, S RAMAIAH ,   Dept of Agronomy,Agricultural College and Research Institute, Madurai 625 104 Tamil Nadu, P PARAMASIVAM ,   Dept of Agronomy,Agricultural College and Research Institute, Madurai 625 104 Tamil Nadu
Published: September 2023

A field experiment was conducted to evaluate the optimum irrigation regime and effect of nitrogen levels under different moisture stress conditions on rice varieties Co 37 and Co 41 under transplanted condition. The results revealed that rice co 37 (Vaigai) was found to be more suited than rice Co 41. Irrigation to replenish 7 cm depth one day after its disappearance was found to be the best irrigation schedule for rice and nitrogen at 75 kg/ha was found to be optimum for higher grain yield.
HETEROSIS IN INTER-VARIETAL HYBRIDS OF RICE (Oryza sativa L.)
Authors:   Department of Agricultural Botany,Agricultural College and Research Institute,TNAU, Madurai 625 104, N SAMPATH , S RAJASEKARAN ,   Department of Agricultural Botany,Agricultural College and Research Institute,TNAU, Madurai 625 104, P VIVEKANANDAN ,   Department of Agricultural Botany,Agricultural College and Research Institute,TNAU, Madurai 625 104
Published: September 2023

The extent of heterosis for yield components in a set of fourteen intervarietal rice hybrids involving thirteen parents were studied. Substantial heterosis over mid-parent and better parent was observed for the fourteen characters studied. The hybrid Vaigai/IET 4786 was superior with high heterosis for boot leaf area, ear bearing tillers, grains per panicle, grain yield and strau yield.
PERFORMANCE OF WHEAT VARIETY UNDER LIMITED MOISTURE SUPPLY CONDITIONS IN HEAVY SOILS
Authors:   Division of Agronomy, Sukhadia University,Agricultural,Experiment Station Durgapura, M.S SHAKTAWAT ,   Jaipur (RAJ) India, N.L JOSHI ,   Division of Agronomy, Sukhadia University,Agricultural,Experiment Station Durgapura; Jaipur (RAJ) India
Published: September 2023

Performance of wheat varieties under limited moisture supply conditions on heavy soils showed that tuo irrigations increased grain production over no post-souing irrigation and one irrigation by 46 and 23 per cent respectively. Straw yield increased due to tuo irri- gations at CRI and flag leaf stage by 56 and 14 per cent over no post- souing irrigation and irrigation at CRI stage respectively. The variety HI-601 gave maximum grain yield followed by 3-40, Kalyan Sona and Sonalika.
VARIABILITY PATTERNS IN QUANTITATIVE TRAITS OF RAGI (ELEUSINE CORACANA GAERTN.)
Authors:   Dept of Genectics, Faculty of Basic Science & Humanitics Rajendra Agrl. University, Bihar, Pusa (samastipur) 848 125, V.S VERMA
Published: September 2023

A wide range of variability was observed for grain yield and its component characters in collection of 23 cultures of finger millet (Eleusine coracana Gaertn.). High genetic coefficients of variation were observed for grain yield and total number of ears per plant, whereas for productive tillers as well as tillers per plant, its esti- mates were moderate. Plant height, length of ear and number of fingers exhibited low estimates of genetic coefficients of variation. Moderate to high estimates of heritability (in broad sense) were obtained for almost all the characters studied. Grain yield and number of ears per plant possessed high heritability coupled with high estimates of genetic advance and hence selection at phenotypic level for these traits would be more effective.
PALYNOLOGICAL STUDIES IN GUAVA AND ITS RELATED SPECIES
Authors:   College of Horticulture,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, N CHEZHIYAN
Published: September 2023

The pollen grains of guava and its relatives are triangular, oval and round in shape with size varying from 15.6 u to 25.2 μ and 14.7 to 21.1 in acetocarmine media for Safeda and Seedless respectively. The minimum and maximum size of pollen grains were 12.6 to 16.8 in Psidium polycarpum and 16.8 μ 48.3 in P.molle. The - maximum percentage of fertility was recorded in P.polycarpum (98.85%) and the miminum in P.cattleianum (18.64%) respectively. The pollen grains of all the species could be stored well up to 210 days in shallow pan (refrigerator) at 15 2°C for prolonging the storage life of the pollen in Psidium species. The pollen has lost its viability with- in 30 days at room temperature.
EFFECT OF C:N RATIO ON THE BIODIGESTION OF WASTES IN BIOGAS PRODUCTION
Authors:   Department of Bioenergy, Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, P RAJASEKARAN , A PALANISAMY ,   Department of Bioenergy, Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Comparative evaluation of biodigestion of wastes viz. Saranai, nutgrass, subabul leaves, rain tree leaves after mixing with coudung and swine manure to obtain a C:N ratio of 20:1 and 30:1 in relation to biogas output and microbiological activities were carried out. Maximum destruction of total solids (TS) and volatile solids occurred in treatment containing suine manure, coudung and saranai mixed to arrive to final C:N ratio of 27:1, which recorded the highest gas output of 79.4 litres over twelve weeks period. Maximum methanogenic population of 128.5 x 104/g was also observed in the same treatment. A judicious combination of wastes to arrive at a C:N ratio between 27:1 and 30:1 seems to be the optimum mix for enhancing gas yield.
CORRELATION OF YIELD COMPONENTS WITH YIELD IN RICI (Oryza sativa L.).
Authors:   Department of Agricultural Botany,Agricultural College and Research Institute,TNAU, Madurai 625 104, N SAMPATH , S RAJASEKARAN ,   Department of Agricultural Botany,Agricultural College and Research Institute,TNAU, Madurai 625 104, P VIVEKANANDAN ,   Department of Agricultural Botany,Agricultural College and Research Institute,TNAU, Madurai 625 104
Published: September 2023

Correlation studies in rice varieties indicated positive and significant association of panicle length, grains per panicle and 100 grain voight with yield, while there was no such correlation in the hybrids. In hybrids, the grain yield had significant and positive association with number of primary and secondary branches per panicle, cays to panicle emergence and number of non-ear bearing tillers. Correlation and regression studies of F1 performance with better and mid: parental values might be attributed to the potentiality of both the parents and not to a single better parent alone.
A STUDY OF SOCIO-ECONOMIC AND PERSONAL TRAITS OF FARMERS ASSOCIATED WITH DAIRY CATTLE MANAGEMENT
Authors:   Kumaraperumal Farm science Centre, Tiruchirapalli 620 009, M MOHAMED HABIBULLAH KHAN , G KARUNAMOORTHY ,   Kumaraperumal Farm science Centre, Tiruchirapalli 620 009, K NAZIR AHAMED KHAN ,   Kumaraperumal Farm science Centre, Tiruchirapalli 620 009, A AROKIARAJ ,   Kumaraperumal Farm science Centre, Tiruchirapalli 620 009
Published: September 2023

A study was conducted at Kumaraperumal Farm Science Centre Tiruchirapalli with farmers from different villages around Tiruchirapalli who were participants in the dairy cattle management course. Three socio-economic traits such as educational status, extension contact and farm size and one personal trait, age, were found to have significant effect on dairy management.
PHYSIOLOGICAL ASPECTS OF DROUGHT TOLERANCE IN GROUNDNUT (Arachis hypogala L.)
Authors:   Assitant Professor,(Crop Physiology), TNAU , Coimbatore 3, A ARJUNAN , P.S SRINIVASAN ,   Associate Professor,(Crop Physiology), TNAU, Vriddhachalam, P VINDIYAVARMAN ,   Assitant Professor,(Breeding), TNAU, Aliya Nagar
Published: September 2023

The groundnut cultivars viz., VG 77. JL 24 and CO 2 possess greater drought tolerance characters like higher root-shoot ratios, accumulations of cations. K+ in parti- cular. These characters have contributed for the higher pod yields in groundnut under moisture stress conditions. Thus K+ content in the leaf can also be considered as one of the criteria for the drought tolerance in groundnut.
ZINC LEVELS IN RELATION TO GROWTH AND ZINC CONTENT OF WHEAT
Authors:   Soil Chemistry, Department of Soil, HAU Hisar 125 004, SINGH KULDEEP
Published: September 2023

Wheat (Triticum aestrivum L.) plants were grown in the greenhouse using a 2n deficient soil (Typic Torripsamment) treated with nine levels of Zn ranging from 0 to 100 ppm. The magnitude of Zn response was 'dependent on growth stage and Zn level. A dose upto 20 ppm Zn had no deterimental effect on yield. In early stage of growth, 2.5 ppm Zn was found better than the other levels tried. But, at later stages a higher rate of Zn (10 ppm) could meet the requirement of the crop. Concentri tion of Zn in different plant parts increased with the rate of its application and it was invaulable higher in lower leaves than in t middle and upper ones. There was considerable build up in tissue Zn concentration at higher. Zn levels without substantial difference in yield. The amount of DTPA extractable Zn decreased. With time primarily due to fixation in soil during crop growth as the total amount of Zn removed through shoot growth was only a small proportion.
SEED YIELD AND YIELD ATTRIBUTES AS INFLUENCED BY METHODS AND INTERVALS OF IRRIGATION IN SESAMUM (SESAMUM INDICUM L.)
Authors:   Agricultural Research Station,Bhavanisagar 638 541 Tamilnadu., M AYYASWAMY , R KULANDAIVELU ,   Agricultural Research Station,Bhavanisagar 638 541 Tamilnadu.
Published: September 2023

A study was made to determine the affect of methods of irrigation viz, Beds and channels, ridges and furrows, alternate ridges and furrows and broad bed with two intervals of rrigation (once in 20 and 30 days) and farmer's method (irrigating in beds and channel once in 15 days) as control on sesamum. The yield attributes like number of capsules present on the mainstem, primary and secondary branches were increased by lower levels of moisture in alternate furrows and broad bed system irrigating once in 20 days. Capsule length was significantly increased by higher moisture levels. Higher seed yield was recorded in alternate furrows-irrigating once in 20 days followed by ridges and furrows-irrigating once in 30 days at both the centres. Hence, rirrigating in alternate furrows once in 20 days may be considered as optimum for sesamum.
EFFECT OF FARMYARD MANURE AND AMMONIUM SULPHATE ON THE CALCIUM AND MAGNESIUM CONTENT AND UPTAKE BY RAGI (Eleusine coracana) GAERTN.
Authors:   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, S CHELLAMUTHU , G.V KOTHANDARAMAN ,   Dean (P.G) Studies TNAU, Coimbatore 3, P DURAISWAMY ,   Assitant Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

A field experiment was conducted to study the effect of FYM and (NH,),SO, on ths Ca and Mg content and uptake of Ragi. The study revealed that Ca and Mg content increased markedly by the application of N-Sources of Fertilizers. Ragi variety Co-9 recorded significantly higher content of Ca than Co. 7. Combined application of FYM @ 90 Kg N/ha and (NH),SO. @ 90 kg N/ha registered the highest total uptake of Ca. Application of 60 kg N/ha as FYM and (NH,),SO, recorded the highest content of Mg in ragi grain. The variety of Co. 7 recorded significantly higher uptake of Mg than Co. 9. The variety Co. 7 registered significantly higher uptake of Mg 'by grain as well as total uptake than Co. 9
PARALLEL AND RELAY INTERCROPPING IN RAINFED REDGRAM ON GROWTH AND YIELD
Authors:   Associate Professor, Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, B ASOKARAJA , S RAMIAH ,   Professor and Head, Department of Agronomy, Agricultural College and Research Institute,Madurai 625104 TamilNadu.
Published: September 2023

A field experiment was conducted to study the feasibility of introducing two sets of intercrops in redgram and to find out the most economical intercrop and relay interciop in' vertisol under rainted conditions at the Tamil Nadu Agricultural University Farm, Coimbatore. Sorghum followed by ratoon sorghum were, found to be the most profitable intercrop and relay, intercrop respectively in redgram, fetching the fighest net return (Rs." 2628/ha) followed by greengram and wheat as intercrop and relay intercrop respectively (Rs. 2354/ha). Raising pure.redgram was the least reniunerative.
FODDER SORGHUM CO 27 FOR INCREASED NUTRITIOUS FODDER
Authors:   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, C SURENDRAN , N.R CHANDRASEKHARAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, P CHANDRASEKHARAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S.R SREE RANGASWAMY ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Research work done to evolve a high yielding, multicut fodder sorghum variety resulted in the release of Co 27 Fodder Sorghum strain which is a hybrid derivative of sorghum Co 11 and S. halepense. Co 27 has got a green Fodder yield potential of 44.5 t/ha in 55.60 days under irrgation in first harvest and 24.5 t/ha in 55 days after the first harvest in the ratcon crop. It gives an yield of 20.8 t/ha under rainfed condition.
RELATIONSHIP BETWEEN METEOROLOGICAL FACTORS AND THE INCIDENCE OF PEARL MILLET ERGOT DISEASE
Authors:   Agricultural Officer, Directore of Agriculture Madras, T DAKSHINAMOORTHY , K SIVAPRAKASAM ,   Professor of Plant PAthology,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Influence of weather factors on the incidence of ergot disease of pearl millet was studied. Rainfall and evening relative humidity had positive correlation with ergot incidence whereas negative association was observed by the maximum temperature,
A MEDIUM. DURATION HIGH YIELDING RAGI STRAIN CO 12 (Eleusine coracana GARTN.) FOR TAMIL NADU
Authors:   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, N SUNDARESAN , M.N PRASAD ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, T.S RAVEENDRAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S SURESH ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, C NAGARAJAN ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Ragi is an important cereal crop among the farming community of Tamil Nadu next in the order of priority of Sorghum and Pearl Millet. The strains so far cultivated in Tamil Nadu though high yielding were of shorter duration group and more prone for the infections of blast and had the risk of being trapped in September rains at harvest stage. Hence the necessity. identification and elucidation of an ideal medium duration strain of Ragi Viz, Ragi Co 12 (TNAU:9) are discussed in detail in this paper.
EFFCT OF INTEGRATED WEED MANAGEMENT ON YIELD AND QUALITY OF SUNFLOWER
Authors:   Assitant Professor,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, R JAYAKUMAR , M PREMSEKAR ,   Assitant Professor,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, N KEMPUCHETTY ,   Associate Professor, Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, S SUBRAMANIAN ,   Director, Centre for Soil and Crop Management Studies,Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Field expriments were conducted during Kharif 1984 and 1985 at Tamil Nadu Agricultural Universty Farm with sunflower var Co.2 to study the quality of sun- flower as influenced by different weed management practices. The pre-emergence application of fluchloralin at 0.75 kg/ha followed by one late manual weeding at 30 DAS enhanced the quality of sunflower and increased the protein and oil produc- tion by 130 kg and 336 kg/ha respectively over unweeded control. Fluchloralin at 1.25 kg/ha or the farmer's practice of two manual weedings at 20 and 40 DAS were the next alternative in enhancing the yield and quality of sunflower.
CORRELATION AND PATH-COEFFICIENT ANALYSIS IN BENGAL GRAM (Cicer arietinum L.)
Authors:   Research Associate, Dept of Genectics And Plant Breeding, Rajasthan College of Agriculture Udaipur, P.P SHARMA , S.R MALOO ,   Assitant Professor, Dept of Genectics And Plant Breeding, Rajasthan College of Agriculture Udaipur
Published: September 2023

In twenty one diverse varieties of Bengal gram grown in wintet (rab/) under two different planting dates, the correlation coefficient indicated that grain yield had significant positive association with number of pods per plant at genotypic and phenotypic levels under both the planting dates while grain yield exhibited positive association with number of primary branches per plant and 100-grain weight at both the levels in first planting. Further, path analysis indicated that number of pods per plant had the maximum direct effect in both the plantings followed by number of primary branches per plant and days to flower.
COMBINING ABILITY FOR YIELD AND YIELD COMPONENTS IN RICE (Oryza sativa L.)
Authors:   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003, S KALAIMANI , K KADAMBAVANA SUNDARAM ,   School of Genectics, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

The combining ability for yield and yield attributes was studied using 7x7 diallel The results revealed the existence of GCA variance in greater magnitude than SCA vari- ance for all the characters studied indicating the scope for improvement by exploiting the available additive components. Among parents IR 8 was the best combiner for all the traits Cult. 340 and ADT 3 for earliness and grain weight, Co. 37 for yield and IR 20 for number of grains per panicle could be the other parents.
PRELIMINARY N, P AND K FOLIAR DRIS NORMS FOR COCONUT
Authors:   Division of Soil science Central Plantation Crop Research Institute, kasaragod 670 124 Kerala, H HAMEED KHAN , K.K SURESH ,   Dept of Statistics, Bharathiyar University Coimbatore 3, C.C BIDDAPPA ,   Division of Soil science Central Plantation Crop Research Institute, kasaragod 670 124 Kerala
Published: September 2023

The efficiency of predicting nutrient imbalances and deficiencies in coconut was tested using Diagnosis and Recommendation Integrated System (DRIS) developed by Beautils which utilizes the ratio of tissue nutrient concentration rather than the concen- tration per se. DRIS consistently produces more accurate diagnosis and imbalances than critical concentration studies. Plant samples were collected from 14th leaf (diagno- stic leaf) from a population of 183 palms and palms yielding less than 35 nuts/annum/ palm were considered low yielding and those producing more than 35 nuts/palm/annum were considered high yielding or desirable population. Cocouut leaf norms were formulated for different forms of expression for nitrogen, phosphorus and potassium and the variance ratios for K. NK, PK, K/P, K/N were found to be highest and signifi- cant. Indexes for N, P, and K were obtained integrating values of nutrient ratio of a test sample, mean value of the ratio for high yielding population and CV of high yielding population for that form of expression. Nutrient indexes were calculated from the leaf analysis values obtained from individual treatments from a factorial experi- ment. The indexes indicated marked deficiency for nitrogen, which was confirmed by experimantal data. The foliar levels of K which were below the suggested critical levels did not give any negative index DRIS method of diagnosis suggested the order of importance of limiting nutrient for a given situation. Hence based on the norms developed, nutrient application can be suggested for a targetted production. There is ample scope for refinement of DRIS norms by sampling a larger population. and utilizing it as an effective tool for fertilizer recommendation for coconut.
EFFECT OF AMENDMENTS AND ZINC ON THE AVAILABILITY, CONTENT AND UPTAKE OF ZINC AND IRON BY RICE BHAVANI IN SODIC SOIL
Authors:   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, P DURAISAMY , G.V KOTHANDARAMAN ,   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, S CHELLAMUTHU ,   Dean, Post Graduate Studies, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

A pot experiment was conducted to study the effect of amendments and zinc on the availability and uptake of Zn and Fe in a sodic soil with the treatments comprising of organic and inorganic amendments as main plot and levels of Zn i. e. 0, 10 and 20 ppm as sub-plots using rice crop Bhavani. The study revealed that application of amendments improved Zn availability in soil and uptake by rice grain and straw. Increased application in levels of Zn increased the available Zn content and uptake by rice grain and straw where as Fe availability in soil, content in grain and straw was reduced. The uptake of Fe increased with the application of Zn at 10 ppm.
GENETIC DIVERGENCE IN COWPEA
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, K THIAGARAJAN , R RATHINASWAMY ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, S RAJASEKARAN ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

The genetic divergence among seven parents and their twelve hybrids of cowpea was assessed using Mahalanobis D statistic. Ten cbaracters were studied and utilised for multi variate analysis. The genotypes were grouped into seven different clusters. The characters namely days to 50 per cent flowering. 100 grain weight and plant height contributed maximum towards genetic divergence, The seven parents fell into five clus- ters. The twelve hybrids also fall into five different clusters The genotypes from diverge groups such as KC 199 and KC 195 could be utilized in the breeding programme for improvement of yield in cowpea.
OVICIDAL ACTION OF INSECTICIDES AND MOULTING INHIBITOR ON THE EGGS OF RICE EARHEADBUG Leptocorisa oratorius FABRICIUS
Authors:   Associate Professor (Entomology) Rice Research Station, Tamil Nadu Agricultural University,Tirur 602 025, N RAJU , M GOPALAN ,   Professor and Head, Department of Entomology, Tamil Nadu Agricultural University Coimbatore  641 003, G BALASUBARMANIAN ,   Associate Professor of Entomology, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Fenthion 0,01% was the most effective ovicide followed by phosphamidon 0.045% and malathion 001% in bringing high mortality of eggs of earhead bus. Cypermethrin 0,01%. permethrin 0.0125%. fenvalerate 0.01% and deltamethrin 0.00125% also exhibited high level of ovicidal action on eggs of earhead bug. Diflubenzuron @ 200 ppm had ovicidal action on eggs of earhead bug.
RATIONALISED FERTILISER PRESCRIPTION FOR GROUNDNUT BASED ON SOIL TEST CROP RESPONSE STUDIES
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, PERUMA RANI , P DURAISAMY ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, C JAYARAMAN ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, S MANI ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Soil Test-Crop Response Studies have been conducted on red soil-Irugur series (Typic Ustorthont) with groundnut-POL 2 as test crop. Fertilizer prescription equations have been developed, test verified on other varieties/on allied soil series. Thef ertiliser prescription equation developed for Irugur senes holds good for association/allied series- Palladam and Somayanur; and also suitable for other variety-Groundnut TMV 7.
INFLUENCE OF RAINFALL AND ITS DISTRIBUTION ON CROP YIELDS OF RAINFED COTTON AND SORGHUM
Authors:   Andhra Pradesh Agricultural University,Regional Agricultural Research Station, Nandyal 518 503 A.P, A SIVA SANKAR , M RANGA REDDY ,   Andhra Pradesh Agricultural University,Regional Agricultural Research Station, Nandyal 518 503 A.P, M NAGARAJA RAO ,   Andhra Pradesh Agricultural University,Regional Agricultural Research Station, Nandyal 518 503 A.P, G MADHAVA SWAMY ,   Andhra Pradesh Agricultural University,Regional Agricultural Research Station, Nandyal 518 503 A.P, P BRAMHANANDA REDDY ,   Andhra Pradesh Agricultural University,Regional Agricultural Research Station, Nandyal 518 503 A.P
Published: September 2023

A Study was carried out to determine the influence of rainfall during the crop: season on the yields of rainfed cotton and sorghum, Rainfall during the crop growth had a significant negative association with Kapas yield (r-0.56%, in an early ameri can cotton var. NA 247 (Gossypium hirsutum L.) while it had little influence on late variety Laxmi. Among different months, rainfall and number of rainy days in September month alone had a strong negative effect on kapas yields in American cotton var. NA 247. There was no clear response to rainfall for kapas yield in rainfed desi cotton (Gossypium arboreum L.) varieties viz, Pandaripur Mungari and Srisailam. In Sorghum no distinct relationship exists between rainfall and grain yield of CSH-1, CSH-5, and N-13. However, stover yields were significantly correlated with rainfall during crop growth in hybrids CSH-1 and CSH-5.
EFFECT OF FARMYARD MANURE AND AMMONIUM SULPHATE ON THE AVAILABLE NUTRIENT CONTENT OF SOIL
Authors:   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, S CHELLAMUTHU , G.V KOTHANDARAMAN ,   Dean (P.G) Studies TNAU, Coimbatore 3, P DURAISWAMY ,   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

A Field experiment was conducted to study the effect of FYM and (NH.),SO, on the available nutrient status of soil. The study revealed that the organic carbon content of the soil was increased by the application of FYM and (NH.), SO,. Total N, available N. and P were increased by the increased application of N either as FYM or as (NH),SO, In the FYM treated plots, the total N cantent increased from 0.045 per cent to 0.074 per cent.
INFLUENCE OF ZINC SOURCES OF THE YIELD COMPONENTS, DRY MATTER PRODUCTION AND YIELD OF RICE (VAR. IR 60)
Authors:   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, M.V SRIRAMACHANDRASEKHARAN , K.K MATHAN ,   Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Studies on the influence of zinc sources indicated that combined application of zin- cated suphala and zincated urea and zincated urea alone geve highest value in the case" of number of panicles'm³, 1000 grain weight, dry matter production and yield. Panicle length, number of filled grains/panicle, harvest index was not influenced by zinc sources.
THEORETICAL BASIS FOR MAKING FERTILIZER RECOMMENDATIONS TO RICE
Authors:   Associate Professor, Dept.of Soil Science and Agrl,Chemistry  University Tamil Nadu Agricultural University Coimbatore  641 003, V MURUGAPPANI , SREEKANTAN LEKHA ,   Ph.D Scholar Department of Agronomy, Tamil Nadu Agricultural University Coimbatore 641003, S.P PALANIAPPANS ,   Professor and Head, Department of Agronomy, Tamil Nadu Agricultural University Coimbatore 641003
Published: September 2023

Yield data of rice (AD1 31 and IR 20) from experiments (type A) conducted in col- tivators' fields under the auspices of All India Coordinated Agronomic Research Project were utilized to explore the possibility of formulating a theoretical basis for rationalizing fertilizer recommedation to rice. Relationship f grain yield of rice with applied major nutrients was established in quadratic response function. An optimization procedure for working out the N, P,O, and K,0 doses corresponding to maximum yield is proposed. From the results it appears that the presant lavel of blanket recommendation for N appli cation to rice is lower than the optimal dose in kharif in the four agro-climatic zones studied For rabi, there is need for further experimentation with wider ranges of N levels as optimal levels of N obtained were very high and unrealistic. With respect of P₂O and K.O the present level of recommendation is rather close to the optimal values obtai ned in this study.
ASSOCIATION AND GENETIC DIVERSITY STUDIES IN GREENGRAM (Vigna radiata (L.) Wilczek)
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003, C NATARAJAN , K THIYAGARAJAN ,   Tamil Nadu Agricultural University Coimbatore  641 003, R RATHNASWAMY ,   Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Genetic association and diversity studies among forty five genotypes of diverse origin of greengram were carried out for eight characters. The seed yield, pod number and plant height showed high genotypic coefficient of variation. High heritability estimates were observed for 100 seed weight, days to flowering. plant height and pod length. The seed yield showed highest genetic advance followed by plant height. The correlation study revealed that the seed was positively and significantly correlated with plant height, clusters and pods per plant and seeds per pod. Pods per plant showed a high positive direct effect on seed yield followed by seeds per pod. By application of D analysis, the forty five genotypes were grouped into four clusters. The types chosen from the same eco-geographic region were found scattered in different clusters. The clustering together of types from the same eco-geographic region into one cluster was also observed. Maximum intercluster distance was observed between cluster III and IV indicating that highly divergent types existed in these clusters. In the selected materials, seed weight contributed maximum towards the genetic divergence.
EFFICIENCY AND RESIDUE DISSIPATION PATTERN OF FENVALERATE IN/ON BRINJAL (Solanum melongena L.) FRUITS
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, Y.N LAKSHMYNARAYANA MURTHY , L SUSEELA DEVI ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

In order to find out the most suitable spray concentration of fenvalerate for te pests of brinjal, a field experiment was conducted with four levels of spray concentrations namely 0.005, 0.01, 0.015 and 0.02 percent and giving four sprays at 20 days interval. The most effective concentration was found to be 0.02 percent and in the washed and cooked fruits the residue level has come down to below the tolerance limit by 1.7 days, whereas waiting period for raw fruits was found to be 12.99 days.
RESIDUES OF CARBOFURAN, ALDICARB, ZIRAM AND COPPER OXYCHLORIDE IN BETELVINE
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, K RAJUKKANNU , T MARIMUTHU ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, R RABINDRAN ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, P DORAISAMY ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, G PRASA ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Carbofuran 3G and aldicarb 10G when applied to one year old betelvine crop at 0.5, 1.0 kg ai/ha each dissipated to non-detectable levels in 41 days. The half life. values were 6 and 7 days respectively for carbofuran and aldicarb in betel leaves.. While the aldicarb application required a waiting period of 12 to 14 days, carbo- furan required a waiting period 13 to 15 days for safe chewing of betal leaves. Ziram dissipated, faster than copper oxychloride and the half-life values were 5. and 8 days respectively. Ziram applled as 0.2% spray and copper oxychloride sprayed at 0.25% concentration to betelvine crop required 4.3 days and one day respectively as waiting period for the safe chewing of botel leaves.
EFFECT OF KINETIN ON GROWTH, FLOWERING, YIELD AND CHEMICAL COMPOSITION OF FRUIT OF TOMATO (Lycopersicon esculentum Mill.)
Authors:   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu, A.K BISARIA , G.R RASTOGI ,   Tamil Nadu Agricultural University Coimbatore  641 003 Tamilnadu
Published: September 2023

Plants of tomato (Lycopersicon esculentum Mill.) cv. Pusa Ruby were sprayed with an aqueous solution of kinetin at 0, 10, 50, 100 and 200 ppm. This biore- gulant increased the linear growth at all the used concentrations and stimulated the growth of lateral branches up to a concentration of 100 ppm and had no significant influence at 200 ppm. Kinetin increased the, number of leaves per plant and their area at 10-200 ppm. Quantitative promotion in flowering was observed in plants treated with kinetin. Application of kinetin enhanced the yield of fruits. Kinetin also increased juice, total soluble solids, sugars, protein and ascorbic acid contents of fruits but did not affect the acidity in tomato.
ROLE OF INSECTS IN SECONDARY SPREAD OF ERGOT DISEASE OF PEARL MILLET
Authors:   Agricultural Officer, Directore of Agriculture Madras, T DAKSHINAMOORTHY , K SIVAPRAKASAM ,   Professor, Centre for Plant Protection Studies, Tamil Nadu Agricultural University Coimbatore  641 003, A.V RANGARAJAN ,   Professor, Centre for Plant Protection Studies, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Seven insect species viz., Apis florea, Musca domestica, Tachina fallax, Oxycotonis versicolor, Dolycoris indicus, Syrphus sp. and Camponotus compressus visited the sugary disease infected earheads. Among them housefly, M. domesitea, Syrphus sp., and T. fallax visited were more in number. More number of insects visited the infected ear leads during morning hours between 7.00 and 10.00 a. m. A. florea and M. dom- es ca followed by T. fallax carried more conidial load on their body.
QUALITY CHARACTERISTICS OF TAMIL NADU RICES
Authors:   Paddy Processing Research Centre, TNAU Tiruvarur 610 001, P PILLAIYAR
Published: September 2023

The high yielding varieties though grown on a large scale in Tamil Nadu, do not possess the desired quality attributes. Among 25 varieties studied none is extra long; the dimentional distributions and other quality factors are very narrow. Based on normalized grain weight, only two varieties are superfine. Varieties represent all GT groups. Cooking time and swelling ratio cannot be considered as indices of rice quality. Among cooking quality parameters like the elongation ratio, elongation index. proportionate change and others, the first one seems to be better in indicating rice quality. The cooking quality characteristics of IR 50 is very poor.
AN APPRAISAL OF GENETIC DIVERSITY IN PROSO MILLET (Panicum miliaceum L.)
Authors:   Regional Research Station,Vridhachalam 606 001,Tamil Nadu, V MANOHARAN , V SIVASUBRAMANIAN ,   Tamil Nadu Rice Research Institute Tamil Nadu Agrl. University,Aduthurai- 612 101, Tamil Nadu
Published: September 2023

Mahalanobis D Statistic was used to estimate the genetic diversity among 50 types of proso millet (Panicum miliaceum L.). The types grouped themselves into as many as 15 clusters indicating wide genetic variability among them. Geographic distribution was not related to genetic diversity pointing to the availability of wide genetic variability in the types from the same geographic region. The clusters XII and XIV were highly divergent from the others. The type MS. 5201 in cluster XIV was superior in yield of grain and straw, panicle length and rachis number while MS. 1452/1 in cluster II was superior for panicle number. The type MS. 4955 in cluster VII recorded the lowest number of days to half bloom. When these types which are highly divergent are utilized in a crossing programme, a large spectrum of recombinants are likely to be unleashed. The rank total analysis disclosed that yield of grain and straw and panicle length contributed most to genetic divergence.
VARIABILITY PARAMETERS IN CHICKPEA (Cicer arietinum L.)
Authors:   Research Associate, Dept of Genectics And Plant Breeding, Rajasthan College of Agriculture, P.P SHARMA , S.R MALOO ,   Assitant Professor, Dept of Genectics And Plant Breeding, Rajasthan College of Agriculture
Published: September 2023

Twenty one diverse varieties of chickpea were evaluated for the estimation of different variability parameters in two environments. Genotypic coefficient of variation (GCV) ranged from 1.53 for days to maturity to, 27.67 for grain yield per plant in E, and 2.14 for days to maturity to 37.40 for grain yield per plant in E The estimates of heritability were high for all the characters studied. High genetic advance as per cent of mean coupled with high heritability ware recorded for grain yield per plant, number of pods per plant and number of primary branches per plant.
STUDIES ON FRUIT AND SEED DEVELOPMENT IN CHILLI
Authors:   Assitant Professor, Krishi Vigyan Kendra ,Vridhachalam  606 001 Tamil Nadu, V ASOK METHA , V RAMAKRISHNAN ,   Formerely Professor and Head Of the Dept.of Seed Technology Tamil Nadu Agricultural University Coimbatore 641003
Published: September 2023

In Chilli Co 1 and Co 2, the seeds reached their physiological maturity (maximum seed dry weight) 48 days after anthesis coincident with the green colour of pericarp turningcapsicum red and the majority of the seeds expressing high percentage of germin ability and vigour.
EFFECT OF SEED TREATMENT WITH FUNGICIDES AND INSECTICIDES ON THE VIABILITY OF PEARL MILLETSEEDS DURING STORAGE
Authors:   Centre for Plant Protection Studies, Tamil Nadu Agricultural University Coimbatore  641 003, T DAKSHINAMOORTHY , K SIVAPRAKASAM ,   Centre for Plant Protection Studies, Tamil Nadu Agricultural University Coimbatore  641 003
Published: September 2023

Seeds treated with carbendazim at 2g+ thiram at 6 g per kg and thiram at 6 g per kg of seed recorded higher germination than untreated seeds. A standard slurry treatment of DDT 50% WPat 200mg with 2 g of thiram per kg of sead also recorded higher germina- tion. However germination in seeds treated with HCH and malathion at 10 g per kg of seed recorded lower germination.
PATHOTYPE GROUPING OF XANTHOMONAS CAMPESTRIS PV. DRYZAE ISOLATES OF MADHYA PRADESH
Authors:   Indira Gandhi Agricultural University, Krishaknagar Raipur, R.K SAHU , V.N SAHU ,   Indira Gandhi Agricultural University, Krishaknagar Raipur
Published: September 2023

Bacterial blight (BB) cf rice caused by Xanthomonas campes ris pv. oryzae (Dye et. al., 1980) produces leaf blight and kresek. Blight form is more serious in rice growing districts of Madhya Pradesh (M. P.). Weather conditions viz., average monthly, maximum temperature (31°c); minimum temperature (22°c) and relative humidity (92%) favour BB during the panicle initiation stage of the crop. Pathogenic variability of the organism from country to country and from location to location within a country has been fully recognised (Buddenhagen and Reddy, 1972 and Mew et. al., 1982). Earlier Mohiuddin and Kauffman (1975) classified the Indian isolates in to eight groups, but later studies at All India Co-ordinated Rice Impro- vement Project, Hyderabad (1979) (presently Directorate of Rice Research) suggested only two pathotypes. Later studies at Punjab, Haryana. North West India and Tamilnadu indicated the prevalence of pathotype 1 only (Reddy, 1980. Mariappan et al., 1981, Durgapal, 1985 and Ahuja et. al., 1986). Pathotypes of M. P. have been studied for the first time through this note.
EXPERIMENTAL TECHNIQUE IN TRIALS WITH INTERCROPS OKRA AND FRENCH BEANS
Authors:   Indian Institute of Agricultural Research,Bangalore, P.R RAMACHANDER , B.S PRABHAKAR ,   Indian Institute of Agricultural Research,Bangalore
Published: September 2023

Okra and french bean were intercropped to find out the optimum plot size to conduct intercropping experiments. A plot of 16 units each unit consisting of two okra plants planted at 15 cm apart and three bean plants sown at 10 cm apart was found to be optimum in case of analysis done with L.E.R.. average nutritive value and protein content, In case of analysis of individual crop yields and calorie content per plot a larger plot size had to be used. Convenient. plot size approach revealed that, optimum plat size with minimum necessary replications would be ideal,