Studies on effect of in - situ moisture conservation structures and nutrient management on growth of melia dubia
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UASD
Abstract
On global scale soil moisture conservation methods have been recognised to play an
important role in solving the problem of erosion, siltation of lowlands and retaining the productivity of
soil. Soil moisture and nutrients are critical for better growth. There is need to diverse suitable
techniques of soil moisture conservation and also nutrient management. A field experiment was
carried out at Malagi, Uttar Kannada district with a land slope of 2% during 2012-2013 on “Effect of
Moisture Conservation Structures and Nutrient Management on Growth of Melia dubia” with four main
treatments viz., Conservation pit, Ring basin, Half ring basin, Control and four sub treatments viz.,
Farmyard manure (5 t/ha), Vermicompost (1.25 t/ha), NPK (100:50:100 kg/ha), NPK (150:75:150
kg/ha). Significantly higher plant height was recorded in ring basin with NPK (150:75:150 kg/ha) at 12
months after treatment (5.53 m). Plant collar diameter (3.81 cm), crown diameter (2.53 m), Basal area
(11.65 cm2) and number of leaves (32.73) recorded significantly higher in ring basin with NPK
(150:75:150 kg/ha) at 12 months after treatment. Soil moisture content at 0 - 30 cm (13.53%) and 30-
60 cm (14.53%) recorded significantly higher in treatment receiving ring basin with NPK (150:75:150
kg/ha) in 10th month over the other treatments.
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