STUDIES ON COPPER IN RED AND LATERITIC SOILS AND EFFECT OF COPPER ORE WASTE AND COPPER SULPHATE ON GROUNDNUT {Arachis hypogaea L.) IN RED SOILS OF NORTH KARNATAKA
Loading...
Date
1998-08-19
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
Studies made on forms and distribution of copper in red and
lateritic soils of North Karnataka indicates that the total and
available copper content of red soils was in the range from 37.0
to 83.0 and 0.29 to 3.38 ppm,where as in lateritic soils the
range was from 35.0 to 54.0 and 0.29 to 4.30 ppm respectively.
The pH and organic matter contents of soil are found to influence
the total and available Cu content of soil. The magnitude of
different fractions of Cu in both the soil types are found to be
followed the order, residual copper > organically bound copper >
occluded copper >inorganically bound copper > water soluble and
exchangeable copper.
Field experiments were conducted on red soils at Manoli,
Hanumanamatti and Kulageri during summer 1995 and 1996 under
irrigated condition, to study the response of groundnut {TMV-2)
to copper sulphate and copper ore tailings (GOT). Application of
COT and CuSO4 (at different levels respectively) significantly
increased the concentration and uptake of all the nutrients
except Ca++ and Mg++. Pooled data of two years of all three
locations indicated that application of CuSo4 @ 30 kg/ha
significantly increased the groundnut pod yield (21.14 q/ha),haulm yield (27.71 q/ha) and oil yield (6.50 q/ha). Similarly
application of COT @ lOOQ kg/ha produced highest groundnut pod
yield (2-1.Oa q/ha), haulm yield (29.95 q/ha) and oil yield (7.5G
q/ha). Between CuSO4 and COT treatments the pod yield, haulm
yield and oil yield were superior with application of COT over
CuSO4 application. This is due to combined effect of 2n, Fe, Cu
and sulphur present in the COT,
Further, the COT left over considerable amount of residual
Zn, Cu, Fe and S which will enhance the soil fertility level and
useful for succeeding crop.
Description
Keywords
null