Estimated losses of crops and livestock to pests; Estimated losses without pesticides and substituting only readily available; Nonchemical controls; Environmental control of pests on crops; environmental control of pests on livestock.
Arnold , G. W. , Campbell , N. A. , and Galbraith , K. A. , Mathematical relationships and computer routines for a model of food ... Butterworth , M. H. and Diaz , L. , Use of equations to predict the nutritive value of tropical grasses ...
本书从美术史的研究视野出发,着眼于辽金时期的考古发现、传世文物与文献史籍,考察探讨辽金皇家艺术工程中所呈现出的艺术史要素,关照多种艺术语言和视觉综合体的内在逻辑 ...
These counties were Huang Cheng County , which is in the area east of the Yellow River and which grows mainly coarse wool , and Sandan County which produces both fine wool and coarse wool . ( Huang Cheng is also the name of ...
In concurrence with other authors ( Carter & McGoldrick , 1989 ; Hartman & Laird , 1983 ; McDaniel et al . , 1990 ) , we define family as two or more people related or connected biologically , emotionally , or legally .
Based on limited studies with mule deer ( Pearson 1969 ) , buffalo ( Pearson 1967 ) , elk ( McBee et al . 1969 ) , reindeer ( Dehority 1975 , Orpin et al . 1985 ) , and camel ( Hungate et al . 1959 ) , wild ruminants appear to harbor ...
1 Maconochie ]R Madgwick ]C Madsen NP Mahendra K] Mahon R] Mak KP Manchanda AH Mander LN Mander STK Marasas WFO ... A1 Maunwongyathi P Mazza SM McAdam D McAlpine ]B McBride T] McCall M] McCamish M McChesney MM McClure T] McCredie RS ...
( 1990 ) exposed three cultivars of cucumber ( Cucumis sativus ) to a daily dose of 11.6 k / m biologically effective UV - B radiation in an unshaded greenhouse before and / or after inoculation with Colletotrichum laginarium ...