Reponse of Chickpea (Cicer Arietinum) to Identified Micronutrients Constraints under Vertisol of Malaprabha Command Area In Karnataka
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Date
2013
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Publisher
UAS, Dharwad
Abstract
A study was undertaken to identify micronutrients constraints using GIS technique in
Vertisols of Dundur village under of Malaprabha Command area, Karnataka and response of
chickpea crop to identified micronutrients constraints. Surface soil samples collected at 200
m grid interval were analyzed for pH, EC, CaCO3, OC, N, P, K, S, Zn, Fe, Cu, Mn and B and
mapped by GIS technique. Soil fertility maps revealed that, major portion of the study area
was deficient in available N, P, S, Zn, Fe and B with higher `level of available K, Cu and Mn.
The results on field experiment with chickpea as test crop revealed that, application of
FeSO4 + ZnSO4 each @ 25 kg ha-1 + Borax @ 5 kg ha-1 along with recommended dose of
fertilizer (RDF) recorded the highest plant height, number of branches and dry matter
production at all the growth stages followed by FeSO4 + ZnSO4 each @ 10 kg ha-1 + Borax @
2.5 kg ha-1 along with RDF. The yield, yield components and crude protein content were also
significantly superior over all other treatments with the application of FeSO4 + ZnSO4 each
@ 25 kg ha-1 + Borax @ 5 kg ha-1 along with RDF.
Application of FeSO4 + ZnSO4 each @ 25 kg ha-1 + Borax @ 5 kg ha-1 along with RDF
recorded significantly higher total uptake of N, P, K, S, Zn, Fe and B by chickpea. There was
improvement in available Fe, Zn and B status in soil after harvest of crop due to application
of FeSO4 + ZnSO4 each @ 25 kg ha-1 + Borax @ 5 kg ha-1. The higher additional benefit was
also realized with the application of FeSO4 + ZnSO4 each @ 25 kg ha-1 + Borax @ 5 kg ha-1
compared to all the other treatments.