Person: Sharma, S.
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
Sharma
First Name
S.
Name
Sharma, S.
ORCID ID
0000-0002-5789-8320 4 results
Search Results
Now showing 1 - 4 of 4
- Field-specific nutrient management using Rice Crop Manager decision support tool in Odisha, India(Elsevier, 2019) Sharma, S.; Rout, K.K.; Khanda, C.M.; Tripathi, R.; Shahid, M.; Nayak, A.D.; Satpathy, S.D.; Banik, N.C.; Iftikar, W.; Parida, N.; Kumar, V.; Mishra, A.; Castillo, R.L.; Velasco, T.; Buresh, R.J.The requirement of rice (Oryza sativa L.) for fertilizer can depend on crop and soil management practices, which can vary among fields within a rice-growing area. A web-based decision support tool named Rice Crop Manager (RCM) was developed previously to calculate field-specific rates of fertilizer N, P, and K for rice in Odisha State in eastern India. We compared field-specific nutrient management calculated by RCM with farmers’ fertilizer practice (FFP) and a blanket fertilizer recommendation (BFR), which used a uniform 80 kg N ha–1, 17 kg P ha–1, and 33 kg K ha–1. A total of 209 field trials were conducted in two seasons (kharif and rabi) for two years across ten districts in six agro-climatic zones. Grain yield was consistently higher with fertilization recommended by RCM than with FFP. Higher yield with RCM was attributed to a combination of applying more of the total fertilizer N at the critical growth stage of panicle initiation, applying more fertilizer N in kharif, and applying zinc. The RCM recommendation frequently increased yield compared to BFR as a result of improved N management, which included the adjustment of N rate for a target yield set slightly higher than historical yield reported by a farmer. Fertilization based on RCM rather than BFR reduced the risk of financial loss. The effectiveness of an RCM recommendation relative to BFR and FFP was consistent across rice varieties with different growth duration, irrigated and rainfed rice, and three categories of soil clay content. The RCM recommendation failed to increase yield relative to BFR in one of the six agro-climatic zones, where a higher rate of fertilizer P and/or K was apparently required. The nutrient management calculations used by RCM can be improved as new information and research findings become available. Experiences with RCM in Odisha can help guide the development of comparable nutrient management decision tools in other rice-growing areas.
Publication - The conservation agriculture roadmap for India: policy brief(ICAR, 2018) Jat, M.L.; Biswas, A.K.; Pathak, H.; Mcdonald, A.; Patra, A.K.; Acharya, C.B.; Sharma, P.C.; Chaudhari, S.K.; Singh, R.; Bhaskar, S.; Sharma, R.; Jat, H.S.; Agarwal, T.; Gathala, M.K.; Pal, S.; Sidhu, H.S.; Yadvinder-Singh; Chhokar, R.S.; Keil, A.; Saharawat, Y.S.; Jat, R.K.; Singh, B.; Malik, R.; Sharma, A.R.; Parihar, C.M.; Das, T.K.; Singh, V.K.; Jat, S.L.; Jha, B.K.; Pratibha, M.; Singh, P.; Singh, R.C.; Choudhary, O.P.; Sharma, S.; Satyanarayana, T.; Sidhu, B.S.; Gehlawat, S.K.; Sen, S.K.; Singh, A.K.; Sikka, A.K.Agriculture remains central to the Indian economy, providing livelihood to the majority of its population. Though Indian agriculture have made spectacular progress for food self-sufficiency, yet growing challenges of large management yield gaps, low water and nutrient efficiency, imbalance and inadequate use of external production inputs, diminishing farm profits, deterioration of soil health and environmental quality coupled with climate risks are major concerns. Feeding a growing population with increasing dietary preferences for resource-intensive food products is a major challenge. Moreover, with no scope for horizontal expansion of farming to produce needed food; improving agronomic productivity and achieving high and stable yields under changing and uncertain climate are important for feeding the growing population. Increasing climatic variability affects most of the biological, physical and chemical processes that drive productivity of agricultural systems. The productivity and stability of agricultural systems depends upon measurable factors and processes controlled by climate and non-climate drivers of production paradigm. It is therefore vitally important to develop strategies and practices to sustainably increase food production while increasing farm income, protecting natural resources and minimizing environmental footprints.
Publication - Energy scenario, carbon efficiency, nitrogen and phosphorus dynamics of pearlmillet-mustard system under diverse nutrient and tillage management practices(Academic Journals, 2013) Parihar, C.M.; Bhakar, R.N.; Rana, K.S.; Jat, M.L.; Singh, A.K.; Jat, S.L.; Parihar, M.D.; Sharma, S.Under limited moisture conditions integrated nutrient management and conservation agriculture (CA) practices plays a vital role. Information on effect of integrated nutrient management (INM) with CA practices in pearlmillet (Pennisetum glaucum) ?mustard (Brassica juncea) system is lacking. The present experiment was conducted during 2005-06 and 2006-07 in rainy and winter seasons, at IARI, New Delhi, India to investigate the effect of INM and tillage on pearlmillet -mustard system under limited irrigation. Ridge and furrow (RF) sowing produced significantly higher carbon efficiency (CE), energy output, net returns and economic yield (3768 kg ha-1) of pearlmillet-mustard sequence. The application of 30 kg N + 30 kg P2O5 + FYM at 6 t/ha to pearlmillet produced significantly higher yield attributes, economic yield (3982 kg ha-1), energy output (194023 MJ ha-1) of the system and CE and net return (189.41 and 315.8 US$ ha-1) of pearlmillet and mustard individually over control, 30 kg N + 20 kg P2O5/ha and sole application of FYM at 6 t/ha. Direct application of 60 kg N + 40 kg P2O5/ha to mustard produced significantly higher yield attributes, economic yield (3692 kg ha-1), energy output (182097 MJ), net return (296.73 US$ ha-1) and CE (10.80 and 11.51 during both the years), over control and 30 kg N + 20 kg P2O5/ha. The application of INM with ridge furrow sowing increased available N and P contents in the soil. Whereas, the consumptive use, moisture use rates and moisture use efficiency were the highest under ridge furrow sowing of pearlmillet-mustard system.
Publication - Carbon footprint and economic sustainability of pearl millet-mustard system under different tillage and nutrient management practices in moisture stress conditions(Academic Journals, 2012) Parihar, C.M.; Rana, K.S.; Jat, M.L.; Jat, S.L.; Parihar, M.D.; Kantwa, S.R.; Singh, D.K.; Sharma, S.Pearlmillet (Pennisetum glaucum L.) ? mustard (Brassica juncea L.) is an important cropping system of limited water and marginal land areas grown under improper crop establishment and imbalanced fertilization. Conservation tillage with integrated nutrient management (INM) has potential to improve productivity, maintain soil health and economic sustainability. In present study the response of different tillage and INM on yield, production efficiency, carbon sustainability index (CSI) and economics of pearlmillet and mustard grown during 2005-2006 and 2006-2007 at IARI, New Delhi(India) was evaluated. During all the season?s ridge-furrow sowing resulted considerable improvement in growth and yield of pearlmillet and mustard. Pearlmillet and mustard produced higher yield (2.62 and 1.21 t ha-1), pearlmillet equivalent yield (PEY) (6.52 t ha-1) and production efficiency (31.04 kg ha-1 day-1) when sown in ridge-furrow. Application of 30 kg N and 20 kg P2O5ha-1 along with FYM @ 6 t ha-1 recorded higher yield (2.75 and 1.31 t ha-1) of pearlmillet and mustard, respectively as their residual effect. However, in mustard application of 60 kg N and 40 kg P2O5 ha-1 resulted highest yield (1.30 t ha-1), PEY (6.66 t ha-1) and production efficiency (31.74 kg ha-1 day-1). Net returns and CSI were highest (US $572.4 & 21.92 and 603.4 & 20.02 ha-1) in ridge and furrow and preceding application of 30 kg N and 20 kg P2O5 ha-1 along with FYM @ 6 t ha-1, respectively. In mustard CSI was highest in control (21.84) and net returns (US $ 571.7 ha-1) were highest with highest nutrient level. This study indicates that pearlmillet and mustard can be grown under ridge furrow sowing with INM for sustaining soil health and higher farm profitability.
Publication