Vol. 6, Issue 6 (2018)
Effect of application of iron and zinc on nutrient availability and pearl millet yield in vertisols
Author(s): Fulpagare DD, Patil TD and Ritu S Thakare
Abstract: The present investigation was carried out at farm of Bajra Research Scheme, College of Agriculture, Dhule during kharif 2016. The treatments comprised of foliar and soil application of iron and zinc sources of EDTA and sulphate form at two critical growth stages of pearl millet crop. The organic carbon content (8.31 g kg-1), available N (171.44 kg ha-1), P (23.47 kg ha-1), K (495.32 kg ha-1) and S (47.68 mg kg-1) were observed highest with GRDF + soil application of 25 kg ha-1 FeSO4 + 20 kg ha-1 ZnSO4. Combined foliar application of 0.1% chelated Fe and Zn along with GRDF at tillering and panicle initiation stages also significantly improved the nutrient availability. However, the highest exchangeable Ca++ (27.27 me 100 g-1 soil) was noted in treatment consisting of GRDF + combined application of 25 kg ha-1 FeSO4 + 20 kg ha-1 ZnSO4. The maximum exchangeable Mg++ content (17.92 me 100 g-1 soil) was recorded under GRDF + foliar application of 0.2% chelated Fe at two crop growth stages. The availability of micronutrients (Fe, Mn, Zn and Cu) significantly increases with application of Fe and Zn as soil or foliar. The maximum available Fe (5.92 mg kg-1) and Mn (9.34 mg kg-1) was noticed under GRDF + soil application of 25 kg ha-1 FeSO4, while, the maximum availability of Zn and Cu (0.62 and 1.10 mg kg-1, respectively) was observed with GRDF + soil application of 20 kg ha-1 ZnSO4. The increase in grain and stover yield under the treatments is of 17.33 and 25.61 per cent, respectively for T7 and 12.88 and 18.20 per cent, respectively for T4 over GRDF alone (T2). Among the foliar application, GRDF + foliar application of 0.1% chelated Fe + 0.1% chelated Zn at two crop growth stages (T8) produces the higher grain) and stover yield and it was increased by 10.00 and 17.44 per cent, respectively over GRDF alone.
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How to cite this article:
Fulpagare DD, Patil TD, Ritu S Thakare. Effect of application of iron and zinc on nutrient availability and pearl millet yield in vertisols. Int J Chem Stud 2018;6(6):2647-2650.
