Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
T2-29P-1550
Productivity and Profitability of Pigeon Pea–Vegetable Mustard–Okra
Cropping System as Influenced by Enriched Organic Formulations
Kamal Garg and Shiva Dhar
ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
India has made spectacular breakthrough in production and consumption of fertilizers during
last four decades. However, the imbalanced and continuous use of chemical fertilizers in
intensive cropping system has led to reduction in the crop yields and resulted in imbalance of
nutrients in soil which has adverse effect on soil physico-chemical properties. Due to the
dramatic rise in prices for commercial fertilizers, search for alternative sources of plant
nutrients has become increasingly important, particularly for resource poor farmers of South
Asia. Use of organics build up the soil humus improving the soil physical and biological
properties. Therefore, organic nutrient management systems are needed to maintain agricultural
productivity and protect the environment. Moreover, raw materials required to make FYM are
easily available to farmers. The conversion of rice straw into value-added compost may have
the potential to improve productivity of the crops and reduce environmental pollution as well
as loss of plant nutrients and organic matter. Ashes from combustion of biomass are the oldest
mineral fertilizers in the world. Biomass ashes are nearly free of N but contain significant
quantities of P, K, Ca, Mg and micronutrients essential for plant nutrition (Bhattacharya et al.,
2002). The potato peel manure is very useful for farmers because NPK content was gradually
increased in the soil. The integration of organic manures and composts of residues of various
crops available with farmers would be able to maintain soil fertility as well as sustain crop
productivity. Hence, the present investigation was conducted with the objective to find out the
effect of enriched organic formulations on productivity and profitability of pigeon pea–
vegetable mustard–okra cropping system for achieving higher yield and economics.
Methodology
A field experiment was conducted during the rainy (kharif), winter (rabi) and summer seasons
of 2020–21 and 2021–22 at the research farm of Indian Agricultural Research Institute, New
Delhi. The experiment comprised of one cropping system (pigeon pea–vegetable mustard–
okra) and seven nutrient sources viz., control, 100% RDN through FYM, 100% RDN through
improved RRC, 100% RDN through PHA-based formulation, 75% RDN through PHA-based
formulation, 100% RDN through PPC-based formulation and 75% RDN through PPC-based
formulation were tested in randomized block design with three replications. The pigeon pea
variety ‘Pusa Arhar 16’, vegetable mustard cultivar ‘Pusa sag 1’, and okra variety ‘Pusa Bhindi
5’ were taken in the experiment. The RDN of pigeon pea, vegetable mustard, and okra were 30,
80, and 100 kg N ha -1 respectively. Pigeon pea was sown in the first week of July and
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Ecosystem based approaches for climate change adaptation, ecosystem services, integrated farming system models, Land
degradation neutrality