000			01636nam a2200241Ia 4500
008			220216s9999 xx 000 0 und d
100			_aKarthikakuttyamma M
245		0	_aRelative efficiency of modified urea fertilizers for young rubber plants
260			_bIndian Journal of Natural Rubber Research _c1994
300			_a120-125
520			_aDifferent modified forms of urea, viz., ureaform, neem extract, mixed urea, neem coated urea and neem cake mixed urea were compared along with prilled urea for their efficiency in the growth and development of young Hevea plants in a glass house experiment. A no nitrogen control was also included. The study revealed that ureaform is the best source of nitrogen with respect to growth and apparent recovery of applied N. All the modified forms were effective in increasing the root and shoot growth of the plants. When N is not applied, more than half of the total biomass is diverted for the development of roots. Similar trend was noticed in the case of N partitioning also. If N is applied a good share of it gets translocated to the leaves. Concentration of N in the leachate could be significantly reduced when urea is coated with neem. In all the forms, the maximum flux of N in leachate was observed at the 15th day after fertilizer application.
650			_aApparent nitrogen recovery
650			_aDry matter partitioning
650			_aHevea brasiliensis
650			_aLeaching loss
650			_aNitrogen
650			_aSlow release fertilizer
700			_aMathew M
700			_aShyamala V K
700			_aSuresh P R
700			_aVarghese Anna
942			_cJS
999			_c66711 _d66711