Studies on effect of moisture conservation measures and nutrient management on growth of pongamia pinnata in varada watershed area
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UASD
Abstract
Soil and moisture conservation measures are one of the most important factors for the
improvement of degraded lands. The rainy season is usually short but occasional rainfall can take the
storm of heavy surface runoff. Moisture conservation measure is to achieve the maximum cultivated
soil for the survival and growth of trees. There is need to diverse suitable techniques of moisture
conservation measures and nutrient management. A field experiment was carried out at Karjagi of
Haveri taluk during 2012-2013 On “Moisture conservation measures and nutrient management on
growth of Pongamia pinnata with Ring basin, Crescent bunds, control and organic manures as
Vermicompost (2.5 t/ha), FYM (5 t/ha) and Glyricidia (1.25 t/ha) and also inorganic fertilizers
100:50:100 N: P2O5:K2O kg/ha and 150:75:150 N: P2O5: K2O kg/ha. Significantly maximum plant
height was observed in Ring basin + Vermicompost @ 2.5 t/ha + 150:75:150 N, P2O5, K2O kg/ha was
recorded significantly higher plant height (3.62 m) at 12 months after treatment. Collar diameter (4.04
cm) and crown diameter (2.54 m) recorded significantly higher in ring basin at 12 months after
treatment. Significantly maximum number of branches was observed in Ring basin + Vermicompost
@ 2.5 t/ha + 150:75:150 N: P2O5:K2O (34.13). In ring basin + Vermicompost @ 2.5 t/ha + 150:75:150
N, N: P2O5:K2O had recorded significantly higher on organic carbon (0.82), pH (5.89), available
nitrogen (318.45 kg/ha) and phosphorous (28.45 kg/ha) potassium (185.60 kg/ha) over the other
treatment.
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