Agriculture Reference
In-Depth Information
Figure 1.1 Three objectives ofweed management: (a) reducing weed density to
decrease crop yield loss; (b) reducing the amount ofdamage a given density of
weeds inflicts on a crop; and (c) shifting the composition ofweed communities
from undesirable to desirable species.
by (i) delaying weed emergence relative to crop emergence (Cousens et al .,
1987; Blackshaw,1993; Chikoye,Wiese & Swanton,1995),(ii) increasing
the proportion ofavailable resources captured by crops (Berkowitz,
1988),and (iii) damaging,but not necessarily killing,weeds with chemi-
cal,mechanical,or biological agents (Kropff,Lotz & Weaver,1993).
Search WWH ::




Custom Search