Influence of De-Oiled Tree Borne Oil Seed Cakes on Germination, Vigour and Seedlings Growth of Pongamia pinnata (L.) Pierre and Dalbergia latifolia Roxb.
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University of Agricultural Science, Dharwad
Abstract
The present study was conducted on the utilization of de-oiled Tree Borne Oil (TBO) seed cakes as organic manure for germination and growth of plants at the College of Forestry, Sirsi in the year 2015-16. First experiment was conducted to study the germination pattern of pongamia (Pongamia pinnata) and rosewood (Dalbergia latifolia) seeds as influenced by the leachates of neem (Azadirachta indica) and pongamia seed cakes in different concentration. The highest germination percentage (76.67 % and 98.67 %), germination rate (2.24 and 9.50), peak value (2.63 and 10.97), mean daily germination (2.19 and 2.82), germination value (5.77 and 30.92), seedling length (36.25 and 16.41), seedling vigour index (2779.17 and 1619.48) and survival percentage (100.00 % and 93.12 %) were observed in T6 (50 g of neem seed cake leachate) for pongamia and rosewood respectively.
The second experiment was conducted to study the use of neem and pongamia seed cakes in potting media at different proportions in combination with soil, sand and FYM on the growth parameters of pongamia and rosewood seedlings. The maximum height (33.03 cm and 15.86 cm), collar diameter (7.50 mm and 1.73 mm) and total number of leaves (14.08 and 18.61) was recorded in treatment T4 [soil, sand, FYM (1:1:0.5) + 0.5 proportion of NC (neem cake)] at 180 DAS (days after sowing) respectively for both the species. Maximum root fresh weight (4.43 g and 0.63 g), shoot fresh weight (13.23 g and 1.82 g), root dry weight (2.28 g and 0.34 g) and shoot dry weight (6.42 g and 0.92 g) was recorded in treatment T4 at the end of the experiment respectively for pongamia and rosewood seedlings.
Thus the study suggests that 50 g concentration of seed cake leachate and 0.50 proportions of seed cakes can be used in nursery for raising quality planting material.