Zinc Dynamics and Yield Sustainability in Soybean (Glycine max L. Merrill) under Various Zinc Application Frequencies on Typic Haplusterts
S. S. Hadole *
Department of Soil Science, Post Graduate Institute, Dr. PDKV, Akola, India.
P. A. Sarap
Department of Soil Science, Post Graduate Institute, Dr. PDKV, Akola, India.
Y. A. Reddy
Department of Soil Science, Post Graduate Institute, Dr. PDKV, Akola, India.
M. D. Sarode
Department of Soil Science, Post Graduate Institute, Dr. PDKV, Akola, India.
S. T. Dangore
College of Agriculture, Nagpur, Dr. PDKV, Akola, India.
S. D. Nandukar
Department of Soil Science, Post Graduate Institute, Dr. PDKV, Akola, India.
*Author to whom correspondence should be addressed.
Abstract
The field experiment entitled “Zinc Dynamics and Yield Sustainability in Soybean (Glycine max L. Merrill) under Various Zinc Application Frequencies on Typic Haplusterts” was undertaken during the Kharif of 2015-16, 2017-18 and 2019-20 at Experimental Farm Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. The effect on soil available Zinc was also evaluated. The experiment was laid out in Three Zinc application frequencies, viz. once (single year), alternate (every alternate year), and continuous (every year) at four Zinc application rates, viz. 2.5, 5.0, 7.5, and 10.0 kg ha−1 along with one control (no Zinc) were investigated from 2015-16, 2017-18 and 2019-20. The Zinc application significantly improved the crop yields, system sustainability, DTPA-Zn, and different Zinc pools without causing any environmental risk. In general, the alternate year application of Zinc in Treatment T7 at 7.5 kg ha−1 produced the maximum grain and straw yield and system productivity. Similarly, the maximum macro and micronutrients uptake was also observed with alternate year application of Zinc at T7 of 7.5 kg ha−1.
Keywords: Zinc dynamics, yield, nutrient uptake, soybean and typic haplusterts