000			03190nab a22003137a 4500
999			_c58727 _d58719
001			58727
003			MX-TxCIM
005			20231114204212.0
008			150504s2017 xxu|||p|op||| 00| 0 eng d
024	8		_ahttps://doi.org/10.1016/j.jspr.2017.01.005
040			_aMX-TxCIM
041			_aeng
100	1		_aDe Groote, H. _gFormerly Socioeconomics Program _gFormerly Sustainable Agrifood Systems _8INT2512 _9841
245	1	0	_aMaize storage insects (Sitophilus zeamais and Prostephanus truncatus) prefer to feed on smaller maize grains and grains with color, especially green
260			_aNew York : _bElsevier, _c2017.
500			_aPeer review
520			_aMaize is the major food staple in Eastern and Southern Africa, and since production is seasonal, on-farm storage is practiced by farmers. Because stored maize is susceptible to pests, improved storage methods are being developed which need to be evaluated for their effectiveness in reducing losses. The standard count and weigh method (CWM) assumes storage insects attack grains of different sizes in equal measure, although this has not been tested. This study therefore analyzed storage insects’ feeding preferences for maize grains of different sizes. Maize grain was sieved and split into four size categories, colored with food dyes, remixed, and distributed into 48 jars, each with about 300 g of grain, artificially infested with maize weevils (Sitophilus zeamais) or larger grain borers (Prostephanus truncatus), 40 insects per jar. After two months, the grains were separated into their size categories (visually, by color), and grain damage and weight loss was estimated with the CWM. Results show that storage insects have a preference for feeding on smaller, rather than larger grains; and on colored rather than uncolored grains. Small-sized and colored grains were more likely to be perforated by insects and suffered more weight loss. This preference, observed for both species, is more pronounced in S. zeamais, who also distinguish between different colors, and prefer green. The size effect is, however, comparatively small and the average weight loss calculated by a size-adjusted formula is not significantly different from that calculated by the standard CWM. However, the resulting differences in weight losses between grains of different sizes are small. Weight loss calculated by weighted CWM, while in principle more accurate, does not in practice lead to significantly different estimates. Therefore, the results do not warrant a change in the conventional CWM for weight loss in stored grain.
546			_aText in English
650		7	_aMaize _gAGROVOC _2 _91173
650		7	_aSitophilus zeamais _92534 _2AGROVOC
650		7	_aProstephanus truncatus _93136 _2AGROVOC
700	1		_aDe Groote, B. _95022
700	1		_aBruce, A.Y. _gFormerly Global Maize Program _8I1705904 _9788
700	1		_aMarangu, C. _95023
700	1		_aTadele Tefera _9878 _8INT2940 _gGlobal Maize Program
773	0		_wu444574 _x0022-474X _dNew York, USA : _tJournal of Stored Products Research _gv. 71, p. 72-80
856	4		_yAccess only for CIMMYT Staff _uhttp://libcatalog.cimmyt.org/Download/cis/58727.pdf
942			_2ddc _cJA _n0