000			03046nab a22003977a 4500
001			68062
003			MX-TxCIM
005			20250814124246.0
008			241104s1977 -uk|||po p||| 00| 0 eng d
022			_a0010-3624
022			_a1532-2416 (Online)
024	8		_ahttps://doi.org/10.1080/00103627709366714
040			_aMX-TxCIM
041			_aeng
100	1		_aSoltanpour, P.N. _937047
245	1	2	_aA new soil test for simultaneous extraction of macro‐ and micro‐nutrients in alkaline soils
260			_aUnited Kingdom : _bTaylor & Francis, _c1977.
500			_aPeer review
520			_aA new soil test was developed for simultaneous extraction of NO3, P, K, Zn, Fe, Cu and Mn from alkaline soils. The new extraction solution is 1 M in ammonium bicarbonate (NH4HCO3), 0.005 M in Diethylene Triamine Penta acetic Acid (DTPA) and has a pH of 7.6. The new extracting solution should be stored under mineral oil. Ten grams of soil are weighed out into 125 ml Erlenmeyer flasks. Two 2.5 ml scoops of Fisher G carbon black (to remove color for colorimetric determination of nitrates) are added to each soil, followed by 20 ml extracting solution. The soil mixture is then shaken on an Eberbach reciprocal shaker for 15 minutes at 180 cycles per minute. The extract is then filtered through a Whatman 42 filter paper or its equivalent for NO3, P, K, Zn, Fe, Cu and Mn determinations. The results obtained with the new procedure are highly correlated with results obtained with Olsen's P test, ammonium acetate K test, and Lindsay and Norvell's DTPA‐Zn, Fe, Cu and Mn test. Regression equations between the levels of nutrients extracted by the new procedure and those extracted by the procedures mentioned above were developed. These equations were used to calculate index values for nutrients extracted by the new extraction procedure based on values used at the Colorado State University Soil Testing Laboratory for the standard extraction procedures. The new procedure extracted about the same amounts of K and Fe as ammonium acetate and DTPA, respectively, from soils having low to marginal levels of these elements. However, it extracted about half as much P as NaHCO3 and about 0.5 PPM more Zn, 0.8 PPM more Mn, and 0.3 PPM more Cu from soils having low to marginal levels of these elements.
546			_aText in English
650		7	_aTests _2AGROVOC _930130
650		7	_aAlkaline soils _2AGROVOC _912125
650		7	_aTrace elements _2AGROVOC _95624
650		7	_aMacronutrients _2AGROVOC _934093
650		7	_aNitrates _2AGROVOC _95760
650		7	_aPhosphorus _2AGROVOC _95314
650		7	_aPotassium _2AGROVOC _95225
650		7	_aZinc _2AGROVOC _91315
650		7	_aIron _2AGROVOC _93544
650		7	_aCopper _2AGROVOC _98927
650		7	_aManganese _2AGROVOC _98926
650		7	_aSoil fertility _2AGROVOC _91952
700	1		_aSchwab, A.P. _937048
773	0		_dUnited Kingdom : Taylor & Francis, 1977. _gv. 8, no. 3, p. 195-207 _tCommunications in Soil Science and Plant Analysis _wG444232 _x0010-3624
942			_2ddc _cJA _n0
999			_c68062 _d68054