Influence of Iron and Zinc Fortified with Organics in Rabi Sorghum
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Date
2017-08
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University of Agricultural Science, Dharwad
Abstract
A field experiment to study the effect of iron and zinc fortified with organics in rabi sorghum under rainfed condition on clay loam soil was conducted at the Main Agricultural Research Station, University of Agricultural Sciences, Dharwad (Karnataka) during rabi 2016. The experiment consisting of eleven treatments with varied levels of FeSO4 and ZnSO4 was laid out in randomized complete block design with three replications.
Soil application of RDF + Enriched FYM [(50 kg FYM ha-1 + 3.75 kg ZnSO4 ha-1) + (50 kg FYM ha-1 + 3.75 kg FeSO4 ha-1)] recorded significantly higher total dry matter production (193.61 g plant 1), grain weight (62.33 g plant-1), test weight (37.77 g), grain yield (4,287 kg ha-1), fodder yield (7.51 t ha-1), net returns ( 85,702 ha 1) and benefit cost ratio (3.50) over control, recommended dose of fertilizer and recommended package of practice. Soil application of RDF + Enriched vermicompost [(50 kg vermicompost ha-1 + 15 kg ZnSO4 ha-1) + (50 kg vermicompost ha-1 + 15 kg FeSO4 ha-1)] recorded significantly higher iron content in both grain (39.52 mg kg 1) and fodder (42.34 mg kg 1) which was 13.4 and 15.8 per cent increase over control, 12.6 and 13.8 per cent increase over recommended dose of fertilizer, 9.4 and 9.4 per cent increase over recommended package of practice. Similarly, zinc content in grain and fodder was significantly higher with the same treatment (28.44 and 29.44 mg kg-1, respectively) which was 13.5 and 16.0 per cent increase over control, 12.2 and 14.5 per cent increase over recommended dose of fertilizer, 7.4 and 5.6 per cent increase over recommended package of practice respectively.
Soil application of RDF + Enriched FYM with ZnSO4 and FeSO4 each @ 3.75 kg ha-1 gives higher yields, with higher iron and zinc content.