Journal of Environmental Biology

Amelioration of zinc deficiency in blackgram (Vigna mungo L.) through soil applied zinc in Typic Haplustepts soil of Rajasthan

G. Jat¹, S.K. Sharma²*, R.H. Meena³, D. Jain⁴, R. Choudhary⁵, R.S. Choudhary⁵ and S.K. Yadav⁶

¹Department of Soil Science and Agricultural Chemistry, Rajasthan College of Agriculture, MPUAT, Udaipur-313 001, India

²Directorate of Research, Maharana Pratap University of Agriculture & Technology, Udaipur-313 001, India

³Department of Soil Science and Agricultural Chemistry, Rajasthan College of Agriculture, MPUAT, Udaipur-313 001, India

⁴Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, MPUAT, Udaipur-313 001, India

⁵Department of Agronomy, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313 001, India

⁶ICAR-Network Project on Organic Farming, Maharana Pratap University of Agriculture & Technology, Udaipur-313 001, India

*Corresponding Author Email : shanti_organic@rediffmail.com

Received: 18.05.2020                                                                          Revised: 01.02.2021                                                            Accepted: 07.05.2021

Abstract

Aim: To study the amelioration of zinc deficiency in blackgram (Vigna mungo L.) through soil applied zinc in Typic Haplustepts soil of Rajasthan.

Methodology: A two year field experiment was undertaken during Kharif 2016 and 2017 at Instructional Farm (Agronomy), Rajasthan College of Agriculture, Udaipur, Rajasthan. The treatments comprised application of Zn to soil @ 3 kg Zn ha^-1, 4 kg Zn ha^-1, 5 kg Zn ha^-1 and 6 kg Zn ha^-1. The experiment was laid out in a randomized block design with four replications.

Results: Application of zinc significantly (P=0.05) increased the number of nodules per plant, number of pods per plant, number of seeds per pod, seed yield, haulm yield, biological yield, nutrient (N, P, K & Zn) content and uptake, protein content, net return and B:C ratio in blackgram.  Soil application of Zn@5 kg ha^-1 significantly increased seed yield, haulm yield and biological yield by 72.53, 50.08 and 57.68 per cent over the control in pooled analysis, respectively. However, the effect of application of Zn@5 kg ha^-1 on yield attributes, yield, nutrient content, uptake, quality and economics of blackgram was found statistically at par with the application of 6 kg Zn ha^-1.

Interpretation: The application of Zn@ 5 kg ha^-1 along with the recommended dose of fertilizer (NPK) resulted in significantly (P=0.05) higher productivity, nutrient uptake, quality and profitability of blackgram under Typic Haplustepts soil of Rajasthan.       

Key words: Blackgram, Fertilizer, Typic Haplustepts soil, Zinc

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