EVALUATION OF AGROFORESTRY SYSTEMS UNDER CAUVERY WATER BASIN OF TUMKUR DISTRICT
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Date
2019-08-30
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
The study on ‘Evaluation of agroforestry systems under Cauvery water basin of
Tumkur district’ was conducted during the 2018-19 in Cauvery water basin of Tumkur
district comprising of five taluks viz., Tumkur, Gubbi, Turuvekere, Kunigal and Tiptur.
Bund and boundary plantings were the major traditional agroforestry systems practiced by
the farmers whereas Horti-silviculture system was the major agroforestry system followed
by large farmers. The crop productivity with respect to grain and straw yields of finger
millet under neem and teak based different agroforestry systems were documented lower
compared to control. The cost-benefit ratio under agroforestry systems reported to be higher
in association with other field crops further Horti-silviculture system recorded higher cost
benefit ratio compare to other agroforestry systems. Higher carbon sequestration potential
was observed in agroforestry systems than the conventional agriculture. Tree numbers was
positively correlated with farm holding size and type of agroforestry systems followed by
the farmers. Shannon’s diversity index was higher with large farmer followed by medium
and small farmer. 19 tree species belonging to 12 plant families with 68.42 percent of trees
being indigenous were recorded in study area. Tectona grandis was the most dominant tree
species followed by Grevillea robusta, Azadirachta indica and Cocos nucifera. The
agroforestry systems following farmers’ integrated trees in their farms based on their
preferences such as economic benefit, multipurpose utility of the trees and cultural
preference of the locality based.