000			01664nam a2200193Ia 4500
999			_c25290 _d25290
003			OSt
005			20220119121935.0
008			140128s9999 xx 000 0 und d
082			_a633.8 _bGUR/LE
100			_aGuruprasad M K
245			_aLeaf Litter Addition and Nutrient Recycling in Rubber in Vellanikkara Estate
260			_aVellanikkara _bDepartment of Plantation Crops and Spices, College of Horticulture _c1992
502			_bMSc
520	3		_aPreliminary studies on the total quantity of the leaf litter, chemical composition of leaf litter and the nutrients released through leaf litter for recycling, in an eight year old rubber plantation of Vellanikkara Estate of Kerala Agricultural University have been attempted. During the year under study, wintering started by 14th December, 1991 and continued till 2nd March, 1992, the peak being the third week of January, 1992. During annual defoliation period total leaf litter production (dry weight) was estimated to be 4112 kg/ha, the contribution of which works out to annual addition of 63.3 kg N, 2.64 kg P, 44.0 kg K, 42.32 kg Ca and 8.93 kg Mg. During wintering, there is a gradual decline in the levels of nitrogen, phosphorus and potassium in leaves due to the shift of these nutrients to trunk. This shift was not abserved in the case of calcium and magnesium. Approximate leaf area index was also worked out and is found to be 4.26.
700			_aSreekandannair G (Guide)
856			_uhttps://krishikosh.egranth.ac.in/handle/1/5810155807
856			_uhttps://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810155807&fileid=1972d265-be1d-4ebf-9eff-a0170f77fcf4
942			_2ddc _cTH