Phosphorus and zinc requirements of wheat under wheat ( Triticum aestivum ) – pearl millet ( Pennisetum glaucum ) cropping system

Jain, N.K. and Dahama, A.K. (2006) Phosphorus and zinc requirements of wheat under wheat ( Triticum aestivum ) – pearl millet ( Pennisetum glaucum ) cropping system. Archives of Agronomy and Soil Science, 52 (6). pp. 645-653.

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Abstract

Phosphorous (P) fertilization up to 60 kg ha−1 significantly increased grain and straw yields of wheat and P uptake while Zn removal improved up to 30 kg ha−1. Agronomic efficiency decreased up to 90 kg ha−1. P recovery was higher at 60 kg ha−1 (21.63%) while physiological efficiency (91.14 kg kg−1 P2O5) and value: cost ratio (VCR), i.e. 8.87 were higher at 30 kg P2O5 ha−1. Zinc fertilization up to 6 kg ha−1 also significantly enhanced grain and straw yields and P removal while Zn removal increased significantly up to 12 kg ha−1. Agronomic efficiency (115.3 kg kg−1 nutrient) and apparent Zn recovery (1.87%) were also higher at 6 kg Zn ha−1 while maximum physiological efficiency (6.84 kg g−1 Zn uptake) and VCR (3.21) were recorded at 3 kg ha−1. Productivity of wheat-pearl millet system and apparent P recovery were higher at 60 kg P2O5 ha−1 and 6 kg Zn ha−1. Increasing P and Zn levels resulted in decline in VCR of system. Availability of P in soil after harvest increased and Zn decreased significantly up to 90 kg P2O5 ha−1 while available P decreased and Zn increased significantly up to 12 kg Zn ha−1.

Item Type: Article
Uncontrolled Keywords: Wheat, pearl millet, uptake, nutrient use efficiency, yield and value, cost ratio
Author Affiliation: Department of Agronomy, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur, Rajasthan b Institute of Agri-Business Management, Rajasthan Agricultural University, Bikaner, India
Subjects: Crop Improvement
Divisions: Millet
Other Crops
Depositing User: Mr. SanatKumar Behera
Date Deposited: 24 Mar 2012 13:16
Last Modified: 24 Mar 2012 13:16
Official URL: http://dx.doi.org/10.1080/03650340601036541
URI: http://eprints.icrisat.ac.in/id/eprint/4117

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