Biofortification of Maize (Zea mays L.) with Zinc and Iron under Typic Haplustepts
Loading...
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
MPUT, UDAIPUR
Abstract
A field experiment entitled “Biofortification of Maize (Zea mays L.) with Zinc and Iron under Typic Haplustepts” was conducted during two consecutive kharif, seasons of 2018 and 2019 at Instructional Farm, Rajasthan College of Agriculture, Udaipur. The experiment included 7 levels of soil application (control, 12.5 kg ZnSO4 ha-1, 25 kg ZnSO4 ha-1, 12.5 kg FeSO4 ha-1, 25 kg FeSO4 ha-1, 12.5 kg ZnSO4 ha-1 + 12.5 kg FeSO4 ha-1 and 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1) in main plots and four level of foliar spray (control, 0.5% ZnSO4 ha-1, 0.5% FeSO4 ha-1 and 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1) in sub plots. These treatments were evaluated under split plot design with three replications.
The results indicated that among the treatments applied in soil, application of 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1 recorded significantly higher plant height, leaf area index at 30 DAS and 60 DAS, dry matter accumulation at 30 DAS, 60 DAS and 90 DAS, cob length, number of grain per cob, test weight, protein content, grain (4046.38 kg ha-1), stover (6556.96 kg ha-1) and biological yield (10603.34 kg ha-1) over rest of treatments. Whereas treatment S1 (12.5 kg ZnSO4 ha-1) and S3 (12.5 kg FeSO4 ha-1); S2 (25 kg ZnSO4 ha-1) and S4 (25 kg FeSO4 ha-1); S2 (25 kg ZnSO4 ha-1) and S5 (12.5 kg ZnSO4 ha-1 + 12.5 kg FeSO4 ha-1); S4 (25 kg FeSO4 ha-1) and S5 (12.5 kg ZnSO4 ha-1 + 12.5 kg FeSO4 ha-1) remain statistically at per during 2018, 2019 and in pooled mean. Maximum plant height, leaf area index at 30 DAS and 60 DAS, dry matter accumulation at 30 DAS, 60 DAS and90 DAS, cob length, number of grain per cob, test weight, protein content, grain, stover and biological yield were observed with foliar spray of 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1 (F3) during 2018, 2019 and in pooled mean. Yet treatment F1 and F2 found statistically at par in both years and in pooled mean. The interactive effect of treatment S6F3 gave significantly highest grain and stover yield during 2018, 2019 and in pooled mean over rest of treatment combinations. Higher nitrogen, potassium, zinc and iron content in seed and stover and their uptake were recorded with soil application of 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1 in main plots during both the years and in pooled mean whereas treatment S1 and S2 remained statistically at par during 2018, 2019 and in pooled mean whereas highest phosphorus content in seed and stover and uptake were found with treatment S4 (25 kg FeSO4 ha-1). Highest content and uptake of nitrogen, potassium, zinc and iron nutrients were observed with foliar spray of 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1 (F3) during 2018, 2019 and in pooled mean and treatment F1 and F2 remained statistically at par during both the years and in pooled mean but significantly higher phosphorus content and uptake was observed with foliar application of 0.5% FeSO4 ha-1 (F2) during 2018, 2019 and in pooled mean. Manganese and copper content could not influenced with soil and foliar application of zinc and ferrous sulphate but significantly highest Mn and Cu uptake were found with soil application of 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1 and foliar spray of 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1 (F3) during 2018, 2019 and in pooled mean.
The available N, K, Zn and Fe found significantly highest under treatment 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1 and treatment S1 & S3, S2 & S4, S2 & S5, S4 & S5 were remained statistically at par during both the years and in pooled mean. The highest available phosphorus was found under treatment 25 kg FeSO4 ha-1 during both the years and in pooled mean whereas treatment S3 & S4 remained statically at par during pooled mean. Significantly highest N, K, Zn and Fe content in soil were found with foliar application of 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1 (F3) in sub plots during 2018, 2019 and in pooled mean but highest phosphorus content in soil was found with treatment F2 (0.5% FeSO4 ha-1) during both the years and in pooled mean. The physico-chemical properties (pH, EC, CEC, organic carbon, bulk density, particle density, porosity, water holding capacity) and available nutrients (Mn and Cu) did not change significantly with soil application and foliar application of zinc and ferrous sulphate during both the years and in pooled mean. Different fractions of Zn and Fe found significantly highest under treatment 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1 during both the years and in pooled mean whereas significantly highest Zn and Fe were found with foliar application of 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1 (F3) during 2018, 2019 and in pooled mean in sub plots. Different fractions of Mn and Cu could not increase significantly with soil application and foliar application of zinc and ferrous sulphate during both the years and in pooled mean. Application of 25 kg ZnSO4 ha-1 + 25 kg FeSO4 ha-1 in main plots and foliar application of 0.5% ZnSO4 ha-1 + 0.5% FeSO4 ha-1 in sub plots significantly increase the net return and BC ratio over rest of treatment and control during 2018, 2019 and in pooled mean
Description
Biofortification of Maize (Zea mays L.) with Zinc and Iron under Typic Haplustept
Keywords
Citation
Jat H. And Yadav K.K.