Influence of zinc and iron application on growth and yield of mothbean (Vigna aconitifolia L.) in northern dry zone of Karnataka

MAHALAXMI S. DEVARNAVADGI; VIDYAVATHI G. YADAHALLI; V. B. KULIGOD; G. S. YADAHALLI

doi:10.61475/JFS.2025.v38i4.14

MAHALAXMI S. DEVARNAVADGI Department of Soil Science & Agril. Chemistry, University of Agricultural Science, Dharwad - 580 005, India
VIDYAVATHI G. YADAHALLI Department of Soil Science & Agril. Chemistry, University of Agricultural Science, Dharwad - 580 005, India
V. B. KULIGOD Department of Soil Science & Agril. Chemistry, University of Agricultural Science, Dharwad - 580 005, India
G. S. YADAHALLI Department of Agronomy, College of Agriculture, Dharwad University of Agricultural Science, Dharwad - 580 005, India

DOI: https://doi.org/10.61475/JFS.2025.v38i4.14

Keywords: Growth, Iron, Mothbean, Yield, Zinc

Abstract

A field experiment was conducted during 2022-23 kharif season at RARS, 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 zincin 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 controlreplicated thrice. Among the zinc sulphate levels, application of zinc sulphate alone (ZnSO4) @ 7.5 kg ha-1 while in ironsulphate levels, iron sulphate alone (FeSO4) @ 7.5 kg ha-1 recorded maximum plant height, dry matter accumulation,effective nodules, number of pods per plant, pod length, number of seeds per pod, test weight, grain and haulm yield ofmothbean. Further, higher gross returns (66640 and 64338 ` ha-1, respectively), net returns (38823 and 36521 `ha-1,respectively) and B:C (2.40 and 2.31, respectively) was recorded with the application of ZnSO4and FeSO4alone @ 7.5 kgha-1 each. The combined application of ZnSO4and FeSO4each @ 7.5 kg ha-1 recorded no significant difference however,numerically higher values of growth and yield were recorded as compared to treatments that received 0 kg ha-1 zinc sulphateand iron sulphate each respectively. All the growth and yield parameters increased with increase in ZnSO4and FeSO4levels.