000			01485nam a2200265Ia 4500
008			220216s9999 xx 000 0 und d
100			_aGeorge E S
245		0	_aEffect of potassium and sodium on performance of young hevea brasiliensis
260			_bIndian Journal of Natural Rubber Research _c2000
300			_a92-97
520			_aA pot culture experiment was conducted to study the effect of sodium chloride (NaCl) on the growth of young rubber plants grown in a laterite soil. The treatmenets comprised substitution of K2O (applied as KCl) by Na2O (applied as NaCl) to the extent of zero, 25, 50, 75 and 100 per cent on clone RRII 105. The treatment which received 100 per cent of the recommended dose as K2O and those with 25 and 50 per cent substitution of K2O by Na2O appeared superior to other treatments in total dry matter production and uptake of K. The uptake of N, P, Ca and Mg were not influenced by the substitution. The avialable K and Na content in the soil increased with increased application of these nutrients while pH and EC remained unaffected.
650			_aDry matter production
650			_aDry matter production
650			_aHevea brasiliensis
650			_aHevea brasiliensis
650			_aNutrient uptake
650			_aNutrient uptake
650			_aPOtassium chloride
650			_aPOtassium chloride
650			_aSodium chloride
650			_aSodium chloride
700			_aPunnoose K I
700			_aSudhakumari B
942			_cAR
999			_c46809 _d46809