EFFECT OF ZINC AND IRON FERTILIZATION ON SEED YIELD AND NUTRIENT UPTAKE OF SUNFLOWER (HELIANTHUS ANNUUS L.)Raghavendra, Shreenivas B.V., Kumara Naik, Bellakki, M.A., Soumya Kulkarni and Rajesh S.R.
The improvement in seed yield characters was the manifestation of improved growth characters as a result of higher uptake of nutrients caused by application of zinc and iron. Results of the experiment reveals that soil application of ZnSO4 @ 10 kg ha-1 + Foliar spray of FeSO4 @ 0.5 % along with RDF and FYM @ 8 t ha-1 increased the seed yield by 22.68 q ha-1 and higher uptake of nutrients Viz., N, P, K, S and Micronutrients as, Zn, Fe in grain and Stover of sunflower. The results of the experiment shows that zinc soil application and iron foliar spray @ 0.5 % at grand growth stage of sunflower along with the recommended dose of fertilizers and farm yard manure recorded significantly higher growth, yield and nutrients uptake compared to of RDF control.
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