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Nutrient Management for Sustaining Productivity of Sunflower-Based Cropping Sequence in Indian Semiarid Regions

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Title Nutrient Management for Sustaining Productivity of Sunflower-Based Cropping Sequence in Indian Semiarid Regions
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Creator Parvender Sheoran, Virender Sardana, Sher Singh, Subhash Chander, Ashwani Kumar, Anita Mann and Pushp Sharma
 
Subject Nutrient balance; productivity; profitability; sunflower; sustainability
 
Description Not Available
A comprehensive long-term study (2006–2010) was undertaken to develop a
balanced and integrated nutrient supply system for sunflower-based cropping
sequence considering the efficient utilization of residual and cumulative soil
nutrient balance along with added fertilizers by the crops grown in rotation. The
fertilizer application was done in potato and sunflower while greengram was
raised as such on their residual effect. Significant response in yield was observed
with 150% of the recommended nitrogen, phosphorus and potassium (NPK) or
inclusion of farmyard manure (FYM) with the recommended NPK in the cropping
sequence indicating 6.2–7.0% gain in system productivity over the existing
recommendations. Each additional unit of P and K nutrition prompted system
productivity by 18.9 and 11.0 kg kg−1 of applied nutrient, respectively. Apparent
yield decline was observed in K and PK omission plots to the extent of 15.8 and
27.4% in potato, 10.5 and 23.9% in sunflower and 4.2 and 8.3% in greengram,
respectively, compared to the recommended fertilization. The superiority of the
FYM along with the recommended NPK (potato/sunflower) was evident on the
overall profitability and sustainability of the system, highlighted by the significantly higher productivity (7.16 t SFEY ha−1), sustainability yield index (SYI; 0.76), production efficiency (PE; 27.85 kg SFEY ha−1 day−1) and net returns (2520 USD ha−1) with a B:C ratio of 2.91. Apparent change in potassium permanganate
(KMnO4)-N was negative in all the treatments while N and P balance was positive with 150% NPK fertilization. Nutrient uptake exceeded the replenishment with
100% NPK application and maintained net negative soil nutrient stock for all the primary nutrients, indicating the need for revalidation of the existing recommendations in the system perspective. Conspicuous improvement in residual soil fertility in terms of maximum buildup of soil organic carbon (14%) and
enhancement in soil KMnO4-N (4.2%), Olsen-P (19.4%), ammonium acetate (NH4OAc)-K (5.8%) and dehydrogenase enzyme activity (44.4%) was observed in FYM-treated plots over the initial values. The study suggested that the inclusion of legumes and FYM application with the recommended NPK in potatosunflower cropping sequence will sustain the system’s productivity through the efficient use of nutrients, enhanced microbial activity and improved soil health while combating escalating prices of fertilizers as well as environmental issues in the Indo-Gangetic plains of India and similar environments.
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Date 2019-11-26T12:38:08Z
2019-11-26T12:38:08Z
2017
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/25460
 
Language English
 
Relation Not Available;
 
Publisher Taylor and Francis Group