Somasundaram Eagan

Somasundaram Eagan
Tamil Nadu Agricultural University | TNAU · Agribusiness

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99
Publications
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Introduction
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Publications

Publications (99)
Article
The present study on Biochemical evaluation of organic inputs (Jeevamruth and Beejamruth) and their efficacy on Greens was carried out at the Department of sustainable organic agriculture, Tamil Nadu Agricultural University, Coimbatore and the laboratory experiments were carried out at the Department of Environmental Sciences. A field experiment wa...
Article
An experiment was conducted with thirty cropping systems from six land use types (agriculture, horticulture, silviculture, pastoral, horticulture + agriculture and silviculture + horticulture) to observe the effect of various land use systems on soil properties. The results showed that land use type had a substantial impact on measured soil organic...
Article
Full-text available
Coimbatore is located in the western part of Tamil Nadu and nestled against the foothills of the Western Ghats. This region's cool climate and favourable terrain make it ideal for cultivating hill vegetables. Cabbage (Brassica oleracea var. capitata L.) is a significant cole crop known for its high nutritional value. Excessive chemical usage in cab...
Poster
Full-text available
This poster presents a detailed analysis of the shifting research focus towards millets, specifically highlighting their role in promoting sustainable agriculture. It elucidates the significant effects of soil-applied potassium, alongside foliar applications of ferrous sulphate and zinc sulphate, on the nutritional profile of Kodo millet. Moreover,...
Conference Paper
Full-text available
Seed priming is an approach for enhancing seed germination and seedling vigor that involves controlled hydration and drying of seeds. This process initiates the early stages of germination without allowing radical emergence, which leads to uniform crop stand and improved yield. The present study was conducted to find out the possibility of utilizin...
Article
Aim: The experiment was taken up to study the influence of various organic nutrient sources on soil nutrient availability and their uptake and also on quality parameters of vegetable cluster bean. Place and Duration of Study: the study was conducted at irrigated wetland farms, TNAU, Coimbatore during the year 2018. Methodology: The RBD (randomized...
Poster
Full-text available
The poster addressing about the importance of small millet cultivation and potassium application in soil. The potassium fractions in soil were analysed and confirmed that, increased potassium uptake with higher dose of potassium supply. Millets are considered as a low nutrient requiring crops, even though improved agronomic cultivation practices ma...
Article
Full-text available
The experiment was conducted during 2019 and 2020 at research farm of Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu to study the effect of different manures proportion along with reduced fertilizers rate application on performance of tomato (Solanum lycopersicum L.) yield, produce quality and soil fertility indicators. Experiment was l...
Article
A field experiment was conducted during summer season of 2022 at Tamil Nadu Agricultural University, Coimbatore to study the castor and nutri cereals based intercropping systems on yield and oil content of castor. The experiment was laid out in randomize block design comprises of thirteen treatments and three replications. The experiment results re...
Article
A field experiment was conducted during summer season of 2022 at Tamil Nadu Agricultural University, Coimbatore to study the influence of millet based intercropping systems on growth and productivity of castor under irrigated situation. The experiment was laid out in randomized block design and replicated thrice. The treatment consist of nine cropp...
Poster
Full-text available
Optimizing growth and productivity of short-duration cassava (Manihot esculenta Crantz) with organic nutrient management ➢Cassava is versatile, used for food, feed and industry. It thrives and adapts well to diverse regions. ➢India is making strides in cassava production, yielding around 6.94 MT from 0.183 M ha. ➢India is focusing on short-duration...
Article
Full-text available
The most recent and popular trend of organic agriculture in Indian farming system is Zero Budget Natural Farming (ZBNF) that is derived from the traditional method of cultivation practices. ZBNF approach follow practices viz., Intercropping, green manure incorporation, crop rotation, composting and degradation of agro-wastes and biocontrol of pests...
Article
Background: Millets rank sixth among cereal grains which has a great potential in contributing to food and nutritional security. Little millet (Panicum sumatrense L.), a minor millet, quick germinating, short duration crop tolerant to drought, excess moisture and also rich in nutrients. Use of improved varieties and good agronomic management such a...
Article
Full-text available
Background: Cassava is an important tropical tuber crop with great potential, particularly for short-duration varieties. Understanding the impact of nutrient management practices on the growth and yield of cassava is crucial for crop intensification and multiple cropping. Methods: Field experiments were conducted at Tapioca and Castor Research Stat...
Article
Full-text available
Background: A series of field experiments were conducted at the Tapioca and Castor Research Station (TCRS), Tamil Nadu Agricultural University, Yethapur, Salem from 2022 to 2023. The purpose was to investigate the growth dynamics and economics of short-duration cassava under different nutrient management practices including both integrated and orga...
Article
Full-text available
Turmeric is a significant and widely grown spice crop in the western agro-climatic zone of Tamil Nadu, India. In recent decades, it is cultivated organically with different sources of nutrients. Unraveling the influence of different nutrient management regimes under long-term practice of organic farming on soil quality indicators and turmeric yield...
Article
Full-text available
Field experiments were undertaken to ascertain the residual effect of organic manures on black gram crop in a rice-blackgram cropping sequence during summer seasons of 2017 and 2018 at Thoppur, Thirupparankundram, Madurai. Twelve treatments comprising various sources of nutrients (green manure, neem cake, enriched FYM, Panchagavya, tamarind seed po...
Article
Background: Blackgram being important crop among pulse is gaining popularity and thus requiring suitable crop production practices especially under organic farming. In this context, this study was proposed with the objective to investigate the optimal nutrient management practices in organic blackgram by utilizing various organic nutrient sources....
Article
Full-text available
Standard unit operations/equipment have not evolved for the traditional rice varieties of the Cauvery Deltaic region of Tamil Nadu. The fame of traditional rice is increasing nowadays owing to its health benefits. Non-standard unit operations may cause rice grains to crack during milling, accumulating more broken rice and yields in products of infe...
Article
Full-text available
Exploring the effect of organic and chemical input management practices on soil biological variables in tropical areas of Tamil Nadu may help to develop sustainable nutrient management practices. A systematic study on the effects of different nutrient management practices on soil biological indicators is lacking. Hence, the field experiment was con...
Book
Understanding the basic principles of agronomy is as much important as that of knowing the latest developments scenario in the field of agriculture. It is strenuous strive to keep pace with the progress of such a vast subject like Agronomy which is in practice throughout the globe. The book is divided in to 15 chapters and which covers comprehensiv...
Article
Full-text available
Aim: To understand and reason out the effect of lunar phases on the rice crop growth and development. Study Design: Experiment was laid out in Factorial Randomized Block Design. Place and Duration of Study: Field trial was conducted in the wetland farm of Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu during the Navarai season (Dec. 202...
Article
A field experiment was conducted to study the effect of organic manures and organic foliar sprays on yield attributes and yield of barnyard millet during summer season (February-May) 2022 at Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore. The experiment was laid out in factorial randomized block design (FRBD) with three repl...
Article
A field survey was carried out in Tamil Nadu agricultural university, Coimbatore, to locate Horse purslane (Trianthema portulacastrum) infected with fungal pathogens. Heavily infested areas were recognized and symptomatic leaves were collected. Fungal species account for leaf spot disease of Horse purslane were Isolated from infected leaves on PDA...
Article
Full-text available
Effects of lipo-chitooligosaccharide seed priming on agronomic traits of maize under different salt concentrations (0, 2, 4, 6 and 8 dS/m) were studied. Results showed that the effects of salinity and seed priming on agronomic characteristics were significant at the probability level of 5% (P< 0.05). The increase in salinity up to 10 dS/m negativel...
Article
Residual effects of organic manures on rice-blackgram cropping sequence, during 2017 and 2018 at Thoppur, Thirupparankundram, Madurai were studied at field levels. Twelve treatment combinations comprising various sources of nutrients (Green manure @ 6.25 t/ha, neem cake@250 kg/ha, Enriched FYM @1.0 t/ha, tamarind seed powder @ 100 kg/ha, vermicompo...
Article
Full-text available
The field experiment was conducted during summer 2021-22 at Eastern block, Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore. The field experiment was laid out in Randomized Block Design (RBD) which consists of eight treatments which are replicated thrice to study the effect of nutrient management techniques on yield, yield att...
Article
Full-text available
Organic farming is one of the best alternate crop production systems to safe guard human health and other life in agricultural ecosystem from toxic chemicals used in agriculture. Cluster bean is leguminous industrial crop, with huge demand for various sectors like food consumer markets, pharmaceuticals, medicine etc. Indiscriminate use of chemical...
Article
Full-text available
Cluster bean is one of the important industrial legume crop, favoured semi-arid and arid farmers by its drought tolerance and nitrogen fixation capacity. A investigation was carried out to study the impact of various organic nutrient sources on the yield and economics of the vegetable cluster bean. The experiment was conducted in randomized complet...
Book
Understanding the basic principles of organic agriculture is as much important as that of knowing the latest developments scenario in the field of agriculture. It is strenuous strive to keep pace with the progress of such a vast area like organic farming which is in practice throughout the globe. The budding farmer / scientist have to brace him wit...
Book
Principles of Organic Farming is a practical oriented text to organic crop management that provides background information as well as details of ecology-improving practices. This book is meant to give the reader a holistic appreciation of the principles and importance of organic farming and to suggest ecologically sound practices that help to devel...
Article
Full-text available
An experiment was conducted during rabi 2014-2015 on clay loam soil at irrigated upland farms of Eastern block, Tamil Nadu Agricultural University, Coimbatore to study the effect of integrated nitrogen management of sweet corn hybrid on nitrogen transformation. The experiment was replicated thrice, with 12 treatments comprising integration of organ...
Article
Full-text available
Regardless of land use, the results indicated significant differences in all the studied parameters. Total % SOC ranged from 0.52 to 0.72 for conventional farm samples (mean 0.62%) and 0.63 to 1.59 for the organic samples (mean 1.19). Bulk density (g/cc) ranged from 0.43 to 0.81 (mean 0. 62) for conventional and 0.17 to 0.28 (mean 0.20) organic far...
Chapter
Current farming situation incites to develop new farming techniques that are safer to the environment and sustainable from production point of view. Conventional farming seems not to be sustainable in the long run throughout the world. Sustainable farming techniques ensure the resource conservation (land, water, plant and animal genetic resources)...
Article
Full-text available
Field experiment was conducted during 2010-11 and 2011-12 at Agricultural Research Station (Tamil Nadu Agricultural University), Bhavanisagar, Erode district of Tamil Nadu to study the effect of integrated nutrient management practices on yield and economics of banana under irrigated conditions. The results revealed that application of 100% recomme...
Article
Full-text available
Field experiments were conducted at TNAU, Coimbatore during 2019 and2020 for developing organic nutrient package for finger millet (Ragi) usingthe variety CO (Ra) 15. Treatments included twelve combinations of weedcompost, enriched vermicompost, enriched farmyard manure (EFYM) as soilapplication along with panchagavya, effective microbes (EM), verm...
Article
Full-text available
A field experiment was conducted during rabi 2014-2015 on clay loam soil at irrigated upland farms of Eastern block, Tamil Nadu Agricultural University, Coimbatore to study the effect of integrated nitrogen management on kernel quality of sweet corn hybrid. The experiment was replicated thrice, with 12 treatments comprising integration of organic m...
Article
Full-text available
A Field experiment was conducted at wetlands farm of Tamil Nadu Agricultural University, Coimbatore during rabi 2014-15 (October-February) to study the best weed management practices in organic rice production. The experiment was laid out in randomized block design with three replication and ten treatments. The study revealedthat the application of...
Article
Full-text available
In the present investigation, the genotypic and phenotypic coefficients of variation, heritability, correlation and path coefficient analysis were worked out for yield and its contributing characters of 77 French bean (Phaseolus vulgaris L) genotypes at Horticultural Research Station, TNAU, Udhagamandalam, Nilgiris,Tamil Nadu, India in 2018 with th...
Article
A field experiment was conducted to study the residual effect of organic manures on black gram crop in a rice-blackgram cropping sequence during summer seasons of 2017 and 2018 at Thoppur, Thirupparankundram, Madurai. Twelve treatments comprising various sources of nutrients in a randomized block design with three replication laid out for rice was...
Article
Field experiments were conducted to develop the suitable organic farming package for rice-blackgram crop sequence during samba seasons of 2016 and 2017 at farmers’ holdings in Thirupparankundram block of Madurai district, Tamil Nadu. The organic manure combinations were evaluated for their growth parameters. viz., plant height, no of tillers, no of...
Article
Field experiments were conducted to develop the suitable organic farming package for rice-blackgram crop sequence. Treatments consisting green manure @6.25 t ha-1+split application of vermicompost @ 4t ha-1 in four equal splits (basal, AT,PIand F) + Panchagavya @ 3% as foliar spray twice (AT and PI) recorded significantly high number of tillers and...
Article
Effects of nod factors (lipo chitooligosaccharide) on seedling growth of maize under salt stress have been studied. The study was framed with seed priming using lipo chitooligosaccharide (LCO) a nod factor @ 4 ml/kg of seeds and without priming on maize seedling growth which was exposed to different levels of salinity (0, 2, 4, 6, 8 and 10 dS/m). S...
Article
Full-text available
Bacterial blight (BLB) caused by Xanthomonas axonopodis pv. punicae (Xap) has emerged as a potential threat in pomegranate cultivation in India. To know the present disease scenario and to identify the root cause for its epidemic, survey was conducted in five different localities of Tamil Nadu. Per cent disease severity (PDS) ranged from 1 to 36 pe...
Chapter
Global awareness of health and environmental issues is increasing in recent years, and there is a growing demand for organically grown food products worldwide. We are also convinced that modern agriculture may not be able to meet the requirements of the ever-increasing population in the future. So, we are searching for alternative technologies. Sev...
Article
Full-text available
A study was carried out to examine the performance of blackgram seedlings under varying levels of salinity and to ascertain the remedial effect of lipo chitooligosaccharide (LCO) against salinity stress. Higher germination percentage, root and shoot length, vigour index and salt tolerance index and lower phytotoxicity of roots and shoots (0) were o...
Article
A field investigation was carried out at Tamil Nadu Agricultural University, Coimbatore to evaluate the effect of different non-chemical weed management practices on physical and cooking parameters of organic rice (CO (R) 50). The experiment was laid out in Randomized Block Design with three replication and ten treatments. The physical parameters l...
Article
Full-text available
ABSTRACT A field experiment was conducted during rabi2014 at wetland farms of Tamil Nadu Agricultural University, Coimbatore to find out the effect of non-chemical weed management practices on efficacy and grain yield in organic rice production. Among the weed management practices application of rice bran 2t ha-1fb hand weeding had resulted in sig...
Article
Full-text available
A field experiment was conducted at Tamil Nadu Agricultural University,Coimbatore, Tamil Nadu to standardize the effect of different non-chemical methodsof weed management practices on growth and yield parameters in organic rice[CO (R) 50].The experiment was laid out in randomized block design with threereplications and 10 treatments. Results revea...
Article
Full-text available
Organic farming has played an important role in recent years in boosting the income of farmers without affecting health and environment. Scientific evidences around the world had showed the better quality of grain under organic farming.Hence, the field investigation was carried out at wetlands farm of Tamil Nadu Agricultural University, Coimbatore...
Article
Full-text available
The total water resources available in India are 1859 km 3 , which is roughly 4 per cent of the world's fresh water resources. Tamil Nadu accounts for 4 per cent of the land area and 6 per cent of the population, but only 3 per cent of the water resources of the country. Most of Tamil Nadu is located in the rain shadow region of the Western Ghats a...
Article
Full-text available
A Field experiment was carried out at wetlands farm of Tamil Nadu Agricultural University, Coimbatore during rabi2014 to evaluate the effect of organic rice to weed management practices on yield parameters and microbial population grown under lowland condition. The experiment was laid out in randomized block design with three replication and ten tr...
Article
Full-text available
Field study was conducted during the rabi, 2014 at wetlands farm of Tamil Nadu Agricultural University, Coimbatore to assess the nutrient uptake by weeds and crops under different organic weed management practices. The experiment was laid out in randomized block design with three replication and ten treatments. The study revealed that the unweeded...
Article
Full-text available
Efficient and rational use of manures and fertilizers is imperative not only for obtaining more yields unit area-1 on a sustainable basis, but also to ensure safe food and to conserve the environment. Keeping these aspects in view, the present research work was undertaken to evaluate the organic sources of nutrients on growth and yield of turmeric....
Article
Afield experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during Rabi 201213 (October-February) to identify the ideal weed management technique in organic rice production. The experiment was laid out in randomized block design with three replications. The treatments comprised different weed management practices. The results...
Article
Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during Rabi 2012-2013 (October-February) to identify the ideal weed management technique in organic rice production. The experiment was laid out in randomized block design with three replications. The treatments comprised of fourteen different weed management practices...
Article
Full-text available
Field investigations were carried out at Northern Block Farm of Agricultural Research Station, Bhavanisagar (TNAU) of Tamil Nadu, India during 2010-2012 to study the effect of nutrient management practices on productivity of banana. The results revealed that application of 100% recommended dose of fertilizer (RDF) along with 40% Wellgro soil record...
Article
Field experiment was carried out during June 2010 – March 2011 at Agricultural Research Station, Bhavanisagar, Tamil Nadu, to determine the effect of organic sources of nutrients (Wellgro soil, wellgro pellets, wellgro grains and Farm yard manure) on soil fertility and quality parameters of turmeric. The results revealed that soil fertility chara...
Article
A field experiment was conducted at Agricultural Research Station, Bhavanisagar, Tamil Nadu Agricultural University, during June 2010 – March 2011 to study the effect of organic sources of nutrients (wellgro soil, wellgro pellets, wellgro grains and farm yard manure) and recommended dose of fertilizer (150:60:100) on growth and yield of turmeric....
Article
Cassava, a long season wide spaced crop is slow in its initial growth and development and therefore, intercropping of a short duration crop may increase the biological efficiency as a whole. Intercropping in cassava is a widely followed practice in the humid and sub-humid tropics. In Latin America and Africa, cassava is most commonly associated wit...
Article
Field experiments were conducted from June 2001 to April 2003 at Tamil Nadu Agricultural University, Coimbatore to evaluate the organic sources of nutrients and Panchagavya spray on the biochemical changes, nitrogen flux and yield of crops in the maize -sunflower -greengram cropping system. The experiment consisted of nine treatments comprising six...
Article
Animal oriented manure has a salutary effect on soil fertility besides improving the soil conditions and plant growth. Poultry manure in this regard occupies the pride of place as it is rich in nutrients than the other manures. But, much of the manure now produced under modern methods of rearing poultry contains no litter and contains 70 % moisture...
Article
A field experiment was conducted on sodic soils during 1995 and 1996 at Anbil Dharmalingam Agricultural College and Research Institute, Tiruchirappalli in Tamil Nadu. The experiment was laid out in split-plot design with three replications. The main-plot treatment consisted of five crops, viz. sorghum, [Sorghum bicolor (L.) Moench], cowpea [Vigna u...
Article
A field experiment was conducted during 1995-97 in sodic soil with four tree species viz., neem (Azadirachta indica. A.Juss). pungam (Pongamia glabra. L), casuarina (Casuarina eqisetifolia. JR and G. Forst) and subabal (Leucaena leucocephala. Lamk) in main plots and the irrigation methods, viz., drip, pitcher and surface basin in sub-plots. The int...
Article
A field experiment was carried out during kuriai (June September) (South West Monsoon) and thaladi (October - January) (North East Monsoon) seasons of 1990-91 to evaluate the effectiveness of Sesbania rostrata grown as intercrop and ratoon in transplanted rice-rice sequence. Direct and residual effects of S.rostrata on rice yield and chemical prope...
Article
Field experiments were conducted at Veterinary College and Research Institute, Namakkal, Tamil Nadu during 2002 and 2003 to find out the efficiency of drip irrigation and effect of organic manures on the growth and yield cassava. The popular hybrid of cassava H 226 was tried as test crop. The soil of the experimental site was moderately drained, lo...