Influence of Boron and Zinc Nutrition on Yield, Nutrient Uptake, Recovery and Economics of Maize (Zea mays) Grown in a Coastal Alfisol
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Authors
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M PRUSTY
Department of Soil Science and Agricultural Chemistry Odisha University of Agriculture and Technology, Bhubaneswar - 751 003, Odisha, India
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N PANDA
Department of Soil Science and Agricultural Chemistry Odisha University of Agriculture and Technology, Bhubaneswar - 751 003, Odisha, India
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A K DASH
Department of Soil Science and Agricultural Chemistry Odisha University of Agriculture and Technology, Bhubaneswar - 751 003, Odisha, India
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M MANDAL
Department of Soil Science and Agricultural Chemistry Odisha University of Agriculture and Technology, Bhubaneswar - 751 003, Odisha, India
Keywords:
Apparent nutrient recovery, Economics, Harvest index, Maize yield, Nutrient uptakeAbstract
Micronutrients play an important role in plant metabolism along with macronutrients and in augmenting crop yields. It accelerates the enzymatic activity in plant metabolism despite of its small requirement. Maize is an important crop in rice-maize cropping system in Odisha. Role of micronutrients in addition to macronutrients play a pivotal role in augmenting yield of maize. A field experiment was conducted during 2015 and 2016 in order to study the effect of boron (B) and zinc (Zn) nutrition along with recommended soil test based (STB) fertilization. The growth parameters, yield of the crop, nutrient uptake, apparent nutrient recovery and economics of maize were studied in a coastal Alfisol of Odisha. The experiment was laid out in a randomized block design (RBD) comprising of 10 treatments. Different growth parameters like days to silking (62), plant height (183 cm), cob length (29.9 cm), cob diameter (4.50 cm), rows per cob (17.20) and kernels per cob (588) were found highest in T9, where both B and Zn were applied along with STB fertilization. Total harvested yield of maize including stover (2.80 to 3.24 t ha-1), rachis (0.64 to 0.85 t ha-1) and kernel (1.81 to 2.29 t ha-1) varied from 5.25 to 6.38 t ha-1 in different treatments and was observed highest in T9 (6.38 t ha-1). Harvest index (49.28%), B:C ratio (2.46) and 100 kernel weight (22.80 g) were also recorded highest in treatment T9. Uptake of nutrients like N, P, K, S, B and Zn were studied and there was a significant variation within the treatments. Apparent nutrient recovery of major nutrients like N (9.09%), P (10.62%) and K (40.17%) were calculated and observed best in T9, where soil application of B and Zn were amalgamated with STB fertilization of NPK.
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