Enhanced nutrient and rainwater use efficiency in maize and soybean with secondary and micronutrient amendments in the rainfed semi-arid tropics

Chander, G and Wani, S P and Sahrawat, K L and Rajesh, C (2015) Enhanced nutrient and rainwater use efficiency in maize and soybean with secondary and micronutrient amendments in the rainfed semi-arid tropics. Archives of Agronomy and Soil Science, 61 (3). pp. 285-298. ISSN 0365-0340

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Abstract

In view of widespread deficiencies, a long-term experiment was started at the International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India in 2007 to identify economically efficient application strategy (full or 50% dose every or every second year) of sulphur (S) (30 kg ha−1), boron (B) (0.5 kg ha−1) and zinc (Zn) (10 kg ha−1). During the fourth year in 2010, balanced fertilization through adding S, B and Zn increased maize grain yield by 13–52% and soybean yield by 16–28% compared to nitrogen (N) and phosphorus (P) fertilization alone. Balanced nutrition increased N and P uptake, utilization and use efficiency for grain yield and harvest index indicating improved grain nutritional quality. The N, P plus 50% of S, B and Zn application every year recorded highest crop yields and N and P efficiencies indices and increased rainwater use efficiency with a benefit:cost ratio of 11.9 for maize and 4.14 for soybean. This study showed the importance of a deficient secondary nutrient S and micronutrients B, Zn in improving N and P use efficiency while enhancing economic food production.

Item Type: Article
Divisions: RP-Resilient Dryland Systems
CRP: UNSPECIFIED
Uncontrolled Keywords: micronutrients deficiency, N use efficiency, nutrient uptake, P use efficiency, rainfed agriculture, rainwater use efficiency, maize, soybean
Subjects: Others > Cereals
Others > Semi-arid tropics
Others > Soil
Others > Maize
Others > Water Resources
Others > Legume Crops
Depositing User: Mr Ramesh K
Date Deposited: 19 Apr 2018 05:11
Last Modified: 19 Apr 2018 05:11
URI: http://oar.icrisat.org/id/eprint/10599
Official URL: http://dx.doi.org/10.1080/03650340.2014.928928
Projects: UNSPECIFIED
Funders: ICRISAT
Acknowledgement: The authors gratefully acknowledge the help from Mr P Narsimha Rao in field experimentation. The help from Mr G Pardhasaradhi, Ms K Shirisha and Mr C Vijaya Ranganatha in analysing plant samples and from Dr Abhishek Rathore, Mr Ravikumar Dasari and Ms Roma Das from Biometrics Unit in statistically analysing the data is also acknowledged.
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