000			01789nab a22004217a 4500
001			G32949
003			MX-TxCIM
008			121211b |||p||p||||||| |z||| |
040			_aMX-TxCIM
041	0		_aEn
043			_aIN
072		0	_aF04
072		0	_aP35
090			_aREP-3806
100	1		_aPrasad, B.
245	0	0	_aEffect of long-term use of fertilizers, lime and manure on forms and availability of nitrogen in an acid soil under multiple cropping system
260			_c1986
340			_aPrinted
520			_aDifferent forms of soil nitrogen were determined after fifteenth crop in a long-term experiment involving soybean-potato-wheat, receiving fertilizers and manures. Positive and significant correlations between NO3-N and water soluble, exchangeable and fixed NH4+ were obtained. Also, fixed NH4+ was correlated significantly with water soluble and exchangeable NH4+. Total nitrogen uptake byfive crops of soybean, potato and wheat were significantly related to water soluble, exchangeable and fixed NH 4-N, NO3-N and available N. Path analysis also indicated the greater contribution of NO3 and fixed ammonium N to soybean and wheat and water soluble NH4+ and
546			_aEnglish
595			_aRPC
650	1	0	_aAcid soils
650	1	0	_aAgricultural lime
650	1	0	_aBihar
650	1	0	_aManures
650	1	0	_aMultiple cropping
650	1	0	_aNitrogen
650	1	0	_aNutrient availability
650	1	0	_aNutrient uptake _91191
650	1	0	_aPotatoes
650	1	0	_aSoybeans
650	1	7	_aWheat _gAGROVOC _2 _91310
650	1	0	_91190 _aNitrogen fertilizers _gAGROVOC
700	1		_aSingh, B.P., _ecoaut.
700	1		_aSingh, K.D.N., _ecoaut.
773	0		_tJournal of the Indian Society of Soil Science _n617379 _gv. 34, no. 2, p. 271-274
942			_cJA
999			_c12156 _d12156