000			03157nam a22003617a 4500
001			G96015
003			MX-TxCIM
005			20170719110348.0
008			121211s ||||f| 0 p|p||0|| |
040			_aMX-TxCIM
090			_aCIS-6593
100	1		_aManzeke, G. _uFrom Soil to Soul: Crop Production for Improved African Livelihoods and a Better Environment for Future Generations; Programme and Abstracts of Papers. African Crop Science Society Conference, 10; Maputo (Mozambique); 10-13 Oct 2011.
245	0	0	_aMaize productivity and grain zinc and phosphorus nutritional value as affected by different soil fertility management practices in smallholder farming systems in Zimbabwe
260			_bAfrican Crop Science Society : _c2011
300			_ap. 267-268
500			_aAbstract only
520			_aGlobal soil zinc (Zn) deficiencies pose a serious threat to crop production and food nutrition. Use of inorganic Zn fertilizers and synthetic chelates are avenues to alleviate deficiencies, which are however, not commonly used in smallholder farms due to high costs and inaccessibility. Approaches such as application of organic fertilizers that lead to formation of natural chelates resulting in slow but improved Zn availability, are required. A survey was conducted during the 2009/10 season to evaluate the effect of different soil fertility management practices by smallholder farmers on soil chemical properties and maize grain nutrient concentrations in Wedza and Makoni smallholder farming communities in eastern Zimbabwe. Available soil Zn from the different farmers? fields ranged from 0.5 ? 2.6 mg kg-1. In Wedza district, a combination of cattle manure at 5 t ha-1 and inorganic fertilizers produced maize grain yield of 2.3 t ha-1, sharply contrasting the non-fertilizer treatment which yielded <0.5 t ha-1. A similar trend was observed in Makoni district where organic-inorganic fertilizer combinations attained grain yields of 2.2 t ha-1 compared to 0.75 t ha-1 for the control. Up to 64% and 46% increase in grain Zn concentration was measured against the control in Wedza and Makoni respectively. Total grain Zn uptake ranged from 6.5 ? 48 g Zn ha-1, the low uptake being a function of both poor grain productivity and low concentration of <23 mg kg-1. Co-application of inorganic fertilizers with cattle manure or leaf litter, and legume-cereal rotations significantly influenced (p<0.01) Zn uptake. Maize grain P concentrations had a narrow range of 0.21 ? 0.29 mg kg-1.These results suggest that current farmer fertilization regimes may be inadequate to supply sufficient Zn to improve grain nutrition, and should therefore be supplemented by Zn- based fertilizers
536			_aConservation Agriculture Program
546			_aEnglish
593			_aLucia Segura
594			_aINT2737
595			_aCSC
650	1	0	_aCrop Nutrition
650	1	0	_aNatural Chelates
650	1	0	_aOrganic amendments
650	1	0	_aSoil organic matter
650	1	0	_aZinc Uptake
700	1		_aCakmak, I., _ecoaut.
700	1		_aChikowo, R., _ecoaut.
700	1		_aMapfumo, P., _ecoaut.
700	1		_aMtambanengwe, F., _ecoaut.
942			_cPRO
999			_c8311 _d8311