Author(s):

Kamali B, Chandra Sekaran N, Kalaiselvi T and Chitdeshwari T

Abstract: An experiment was conducted at the Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore during 2019 in kharif season (July to October) to evaluate the foliar application of FeSO₄ on rice yield, grain Fe content and uptake of CO 51 rice cultivar. The experiment was laid out in a factorial completely randomized design (FCRD) with two factors viz., five levels of FeSO₄ (Control (water spray), 0.5%, 0.75%, 1.0% and 1.5% FeSO₄ along with 0.1% citric acid) and 14 different foliar application stages of rice crop (T₁-Panicle initiation, T₂-Flowering, T₃-Milking, T₄-Dough, T₅-Panicle initiation + Flowering, T₆-Panicle initiation + Milking, T₇-Panicle initiation + Dough, T₈-Flowering + Milking, T₉- Flowering + Dough, T₁₀-Milking + Dough, T₁₁-Panicle initiation + Flowering + Milking, T₁₂-Panicle initiation + Flowering+ Milking, T₁₃-Panicle initiation + Milking + Dough, T₁₄-Panicle initiation+ Flowering + Milking+ Dough). The effect was assessed on grain and straw yields and content and uptake of Fe in rice grain. The results revealed that foliar application of 1.0% FeSO₄ + 0.1% CA during Flowering + Milking stages recorded highest grain yield (23.54 g pot^-1), straw yield (32.96 g pot^-1), grain Fe content (170 mg kg^-1) and uptake (40.25 µg pot^-1). The per cent increase over control was 34.28, 34.28, 27.61 and 71.36 in grain, straw yield, grain Fe content and uptake respectively.

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