000			01802nam a2200325Ia 4500
008			220216s9999 xx 000 0 und d
100			_aSingh R P
245		0	_aEffect of potassium and magnesium interaction on soil properties and growth of immature Hevea brasiliensis in Assam
260			_bNatural Rubber Research _c2005
300			_a161-171
520			_aTwo field experiments were conducted for eight consecutive years (1987-1995) at two locations in Assam to assess the influence of potassiuma and magnesium and their interaction on growth, yield and nutrient contents of rubber (Hevea brasiliensis). Girth and girth increment did not show significant improvement due to application of K and Mg but it significantly increased their contents in leaf and had synergistic effect on leaf N and P contents. Application of K significantly increased the availability of K. Also increased the availability of P and organic carbon content and reduced the availability of Ca and Mg. Similarly application of Mg improved the Mg availability as well as organic carbon and available P and Ca. Antagonism between K and Mg was expressed in soil as well as in leaf. Addition of K reduced the Mg availability in soil and Mg concentration in leaf. Conversely addition of Mg reduced the soil available K and leaf K concentration.
650			_aGrowth
650			_aGrowth
650			_aImmature phase
650			_aImmature phase
650			_aMagnesium
650			_aMagnesium
650			_aNutrients
650			_aNutrients
650			_aPotassium
650			_aPotassium
650			_aSoil characteristics
650			_aSoil characteristics
700			_aGupta C K
700			_aJoseph M
700			_aKrishnakumar A K
700			_aMandal D
700			_aSarma A C
942			_cAR
999			_c47204 _d47204