Author(s):

Chethana KH, CT Subbarayappa and DV Naveen

Abstract: A field experiment entitled “Effect of soil and foliar application of zinc on growth and yield parameters of cauliflower (Brassica oleracea var. botrytis L.)” was conducted in the farmer’s field during kharif 2018. The experiment was laid out in a Randomised complete block design with 9 treatments and 3 replications. The results revealed that a day prior to spray, treatment which received 8 kg of Zn ha^-1 through ZnSO₄ as soil application along with RDF (150:100:125 N-P₂O₅-K₂O kg ha^-1) and FYM (25 t ha^-1) has recorded significantly higher zinc content (46.56 mg kg^-1) in cauliflower leaf. One week after spray, treatment T₉ which received 4 kg of Zn ha^-1 through ZnSO₄ as soil application + 0.5 per cent Zn through zinc sulphate as foliar spray along with RDF (150:100:125 N-P₂O₅-K₂O kg ha^-1) and FYM (25 t ha^-1) _­has recorded significantly higher zinc content(49.43%) in cauliflower leaf. Significantly higher zinc content in cauliflower leaves (35.16 mg kg^-1) and cauliflower curd (39.34 mg kg^-1) was recorded in the treatment T₉ which received 4 kg of Zn ha^-1 through ZnSO₄ as soil application + 0.5 per cent Zn through zinc sulphate as foliar spray along with RDF and FYM at harvest. Significantly higher uptake of zinc (139.73 g ha^-1) by cauliflower was recorded with the application of 4 kg of Zn ha^-1 through ZnSO₄ as soil application + 0.5 per cent Zn through zinc sulphate as foliar spray along with RDF and FYM followed by T₈. Lower uptake of zinc of 63.77 g ha^-1 was recorded in T₁ (RDF + FYM).

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