EVALUATION OF AGROFORESTRY SYSTEMS UNDER KRISHNA WATER BASIN OF TUMKUR DISTRICT
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Date
2019-08-28
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
The ‘Evaluation of agroforestry systems under Krishna water basin of Tumkur district’ of
five taluks viz., Chikkanayakanahalli, Koratagere, Madhugiri, Pavagada and Sira were
found five prominent agroforestry systems used by the farmers like Bund planting,
Boundary planting, Scattered planting, Silvi-horticulture and Block plantation and about
35.56 per cent of total respondents has practicing more than one agroforestry systems,
Amongst bund and boundary plantings were the major existing agroforestry systems
practiced by the farmers in Krishna water basin of Tumkur district. The grain yields of
finger millet in association with teak and neem were lower in agroforestry systems than
sole cropping system. The carbon sequestration potential in agroforestry system was
recorded very high in comparison to sole crop and trees in agroforestry systems
accounted for 50-70 per cent higher carbon sequestration than the conventional
agriculture. Tree number varied with farm holding size and kind of agroforestry systems
was positively correlated. 19 tree species belonging to 10 families with 64 per cent being
indigenous were recorded in the agroforestry systems with mean number of trees 51.87
ha-1. However, significantly higher number of trees per hectare was recorded with large
farmer followed by medium farmer and small farmer. Tectona grandis was the most
predominant species followed by Grevillea robusta, Azadirachta indica. The study also
revealed that the majority of the tree species in agroforestry systems were used for timber
followed by fodder and fruit whereas least importance was given for religious and
ornamental species.