Zinc Dynamics and Yield Sustainability in Soybean (Glycine max L. Merrill) under Various Zinc Application Frequencies on Typic Haplusterts

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.