Response of soil and foliar applied zinc on wheat and its residual effect on moongbean
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Date
2023
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Punjab Agricultural University
Abstract
Micronutrient deficiencies have rapidly emerged as a significant human health concern, particularly in developing nations. Zinc (Zn) is a basic ingredient and regulatory co-factor in enzymes and proteins involved in many metabolic activities. It is vital for both animals and plants. The experiment was conducted during the Rabi 2020-21 and Kharif 2021to study the response of soil and foliar applied zinc on wheat and its residual effect on moongbean. Soil and plant samples were analysed by standard methods. The present study results revealed that plant growth parameters such as plant height, spike length, test weight, grain and straw yield of wheat significantly differ among wheat cultivars and increased by spraying of 0.5% ZnSO4.7H2O along with 1% urea at the time of booting + grain filling stages. Macronutrients (N, P, and K) and micronutrients (Fe, Cu, Zn and Mn) content in wheat grains significantly varied among wheat cultivars. The macronutrients (N, P and K) and micronutrients (Fe, Cu and Mn) content in wheat grain and straw was non- significant due to spraying of Zn fertilizer irrespective of the source, however, Zn content in grain and straw varied significantly due to spraying of Zn fertilizer irrespective of the source. The soil chemical properties (pH, EC and OC), macronutrients (N, P and K) and micronutrients (Fe, Cu and Mn) showed nonsignificance and soil available Zn showed significance difference between two cultivars (PBW 725 and PBW 658), under different Zn treatments and time of spray. The residual effect of different Zn sources and time of application on soil chemical properties and available nutrients were also non-significant after succeeding moongbean crop. However, available Zn was significantly higher with applied Zn @ 5kg ha-1 in soil (T1). Similarly, the plant growth parameters and Zn content in succeeding moongbean was significantly higher with applied Zn @ 5kg ha-1 in soil (T1) as compared to other methods of Zn application. From the present study it is concluded that wheat variety PBW 725 showed the highest yield attributes, yield, Zn content and among all the Zn treatments, treatment T5 (2.5 kg Zn ha-1 applied in soil + 0.5% EDTA- Zn +1% urea - foliar spray) exhibited superior performance. Whereas, treatment T1 (5 kg Zn ha-1 -applied in soil) has the most beneficial residual effect on succeeding crops (moongbean) in terms of growth and yield.
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Manjot Singh (2023). Response of soil and foliar applied zinc on wheat and its residual effect on moongbean (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.