Book of Extended summaries ISDA
Book of Extended summaries ISDA Book of Extended summaries ISDA
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad Soil microbial population as affected by different legume crops 250 200 150 100 50 0 Total bacterial count (x 104 g-1 of soil) Rhizobium count (x 104 of soil) azotobacter count (x 104 g-1 of soil) Actinomycetes (X 104 g-1 of soil) fungal count (x 104*cfu g-1of soil) Initial Cowpea Fieldbean Greengram Soil microbial population as influenced by different types of legume crops Soil incorporation of legume crop residues has further improved the microbial population by two folds during first year. The maximum number of bacteria and 352 X 10 4 g -1 ) was noticed with incorporation of cowpea residues as depicted in the figure below. The improvement in soil microbial population might be due to the addition of all the residues which might have added a fair quantity of organic matter to the soil which inturn acted as a substrate for the multiplication and development of microbes either over the initial or against the residue removal during both the years. Soil microbial population as influenced by residue management practices The decreasing in trend in the entire micro flora was noticed after the harvest of rabi maize during both the years by maintaining more or less similar trend as that was observed in the initial as well as at the end of harvest of kharif crops. Increase in microbial population was seen with Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming, INM, soil-microorganisms-plant interactions 519 | Page
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad the incorporation of crop residues over the removal. Further increase in microbial count was observed due to increase in level of N application. The highest total bacterial count of 333 X10 4 g -1 and 352 X10 4 g -1 of soil was recorded with incorporation of cowpea crop residues with N application at 300 kg ha -1 . While the lowest count of total bacteria 61 X10 4 g -1 and 91 X10 4 g -1 in first and second year, respectively was obtained in greengram with N application at 75 kg ha -1 in removal of greengram residue treatments. The changes in the population of microbes in different cropping systems and sequences were well established by Yadvinder Singh et al. (2005). References George, N., Chemining, wa, Muthomi, J. W. andTheuri, S. W. M. 2007. Effect of Rhizobia inoculation and starter N on nodulation, shoot biomass and yield of grain legumes. Asian J. Plant Sci. 6(7): 1113-1118. Yadvinder Singh, Bijaysingh. and Timsina. 2005. Crop residue management for nutrient cycling and improving the soil production in rice-based cropping systems. Adv.Agron.8 T4-33P-1313 Response of Sweet Corn (Zea maysL.var. saccharatasturt) to Integrated Nutrient Management under Rainfed Condition P.N. Karanjikar, S.R. Kadhavane and V.G. Takankhar College of Agriculture, Latur- 413 512, Vasantrao Naik Marathwada Agricultural University, Parbhani, Maharashtra (India) The cereal, maize (Zea mays L.) ranks third in the total production after wheat and rice and it is a staple food in many countries, particularly in the tropics and subtropics. Maize is considered as the “Queen of Cereal”. Maize is a versatile product with uses ranging from industrial products to food preparations, as well as direct human consumption at the vegetative stage. Out of various specialty corns, sweet corn is a mutant type with one or more recessive alleles in homozygous condition that enable the endosperm to accumulate twice the sugar content as that of seed corn. Sweet corn is a exhaustive crop and it is harvested at milky stage and requires fertile soils for optimum production. Amongst various agricultural inputs, fertilizer is and will remain as a chief source in achieving the food production targets. For higher productivity, there is a need for the application of higher dose of fertilizers. But the increased application of high analysis fertilizers and use of high yielding cultivars demanding more secondary and micro nutrients for enhancing food grain 520 | Page Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming, INM, soilmicroorganisms-plant interactions
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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities<br />
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad<br />
the incorporation <strong>of</strong> crop residues over the removal. Further increase in microbial count was<br />
observed due to increase in level <strong>of</strong> N application. The highest total bacterial count <strong>of</strong> 333<br />
X10 4 g -1 and 352 X10 4 g -1 <strong>of</strong> soil was recorded with incorporation <strong>of</strong> cowpea crop residues with<br />
N application at 300 kg ha -1 . While the lowest count <strong>of</strong> total bacteria 61 X10 4 g -1 and 91 X10 4 g -1<br />
in first and second year, respectively was obtained in greengram with N application at 75 kg ha -1<br />
in removal <strong>of</strong> greengram residue treatments. The changes in the population <strong>of</strong> microbes in<br />
different cropping systems and sequences were well established by Yadvinder Singh et al.<br />
(2005).<br />
References<br />
George, N., Chemining, wa, Muthomi, J. W. andTheuri, S. W. M. 2007. Effect <strong>of</strong> Rhizobia<br />
inoculation and starter N on nodulation, shoot biomass and yield <strong>of</strong> grain legumes. Asian<br />
J. Plant Sci. 6(7): 1113-1118.<br />
Yadvinder Singh, Bijaysingh. and Timsina. 2005. Crop residue management for nutrient cycling<br />
and improving the soil production in rice-based cropping systems. Adv.Agron.8<br />
T4-33P-1313<br />
Response <strong>of</strong> Sweet Corn (Zea maysL.var. saccharatasturt) to Integrated<br />
Nutrient Management under Rainfed Condition<br />
P.N. Karanjikar, S.R. Kadhavane and V.G. Takankhar<br />
College <strong>of</strong> Agriculture, Latur- 413 512, Vasantrao Naik Marathwada Agricultural University, Parbhani,<br />
Maharashtra (India)<br />
The cereal, maize (Zea mays L.) ranks third in the total production after wheat and rice and it is a<br />
staple food in many countries, particularly in the tropics and subtropics. Maize is considered as<br />
the “Queen <strong>of</strong> Cereal”. Maize is a versatile product with uses ranging from industrial products to<br />
food preparations, as well as direct human consumption at the vegetative stage. Out <strong>of</strong> various<br />
specialty corns, sweet corn is a mutant type with one or more recessive alleles in homozygous<br />
condition that enable the endosperm to accumulate twice the sugar content as that <strong>of</strong> seed corn.<br />
Sweet corn is a exhaustive crop and it is harvested at milky stage and requires fertile soils for<br />
optimum production.<br />
Amongst various agricultural inputs, fertilizer is and will remain as a chief source in achieving<br />
the food production targets. For higher productivity, there is a need for the application <strong>of</strong> higher<br />
dose <strong>of</strong> fertilizers. But the increased application <strong>of</strong> high analysis fertilizers and use <strong>of</strong> high<br />
yielding cultivars demanding more secondary and micro nutrients for enhancing food grain<br />
520 | Page Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming, INM, soilmicroorganisms-plant<br />
interactions