000			01639nam a22003257a 4500
001			G52214
003			MX-TxCIM
005			20170719155706.0
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040			_aMX-TxCIM
041	0		_aEn
043			_aPH
072		0	_aF08
090			_aLook under author name
100	1		_aCaliza, C.C.
245	0	0	_aEffect of different cropping patterns on soil productivity [Philippines]
260			_aCollege, Laguna (Philippines) :, _c1987
300			_a64 leaves
340			_aPrinted
500			_aThesis (M.S. in Agronomy). Bibliography (60 ref.). Summary (En). Appendices. Received Jul 1987
520			_aCropping patterns influenced some soil properties but not the productivity of soil. Forest soil is more fertile compared to other cropping patterns as indicated by higher content of organic matter, total nitrogen, available phosphorus and cation exchange capacity. Its productivity, however, in terms of corn yield in pots was not superior over those under cropping patterns. The assumption that soil from farms with the same cropping patterns and soil series are homogenous was not true as indicated by the large mean square for experimental error. The reason for this heterogeneity may be due to differences in the management practices employed by different
546			_aEnglish
591			_aPhilippines Univ., Los Banos, College, Laguna (Philippines) UPLB, College, Laguna 3720 - Philippines|89-044936
595			_aTC
650	1	0	_aCropping patterns _91067
650	1	0	_aPhilippines
650	1	0	_91314 _aZea mays _gAGROVOC
650	1	0	_91952 _aSoil fertility _gAGROVOC
942			_cBK
999			_c38357 _d38357