Author(s): Mahalaxmi S Devarnavadgi, Vidyavathi G Yadahalli, GS Yadahalli and VB Kuligod

Abstract: A field experiment was conducted during 2022-23 Kharif season at Regional Agricultural Research Station, Vijayapura to study the influence of zinc and iron on growth and yield of mothbean. The experiment was laid out in a split plot design with four levels of zinc in main plot (0, 2.5, 5 and 7.5 kg ha-1) and four levels of iron in sub plot (0, 2.5, 5, 7.5 kg ha-1) with one absolute control. Application of zinc sulphate alone @ 7.5 kg ha-1, iron sulphate alone @ 7.5 kg ha-1 or combination of zinc sulphate and iron sulphate @ 7.5 kg ha-1 each did not show any significant difference in soil chemical properties viz., pH, electrical conductivity and organic carbon. The soil available nitrogen, phosphorus and potassium also did not show any significant difference with application of zinc sulphate @ 7.5 kg ha-1 alone, iron sulphate application @ 7.5 kg ha-1 alone and their combinations. In contrast application of zinc sulphate @ 7.5 kg ha-1 alone, and iron sulphate application @ 7.5 kg ha-1 alone recorded significantly higher values of DTPA- extractable zinc and iron with increase in the dosage of zinc sulphate and iron sukphate respectively.

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