Weed Control in Maize-Cowpea Intercropping System Related to Environmental Resources Consumption
A field experiment was carried out in Ramhormoz, Iran during the 2008-2009 growing season to investigate the effects of different planting pattern of intercropping on environmental resource consumption and weed biomass. A randomized complete block design (RCBD) with three replications was employed to compare the treatments. Treatments included maize sole crop (M), cow pea sole crop (C), within row intercropping (I1), row intercropping (I2) and mix cropping (I3). The density of intercropping was according to replacement design (one maize replaced by three cow pea plants). The results showed that environmental resource consumption was significantly (P?0.05) affected by cropping system, where PAR interception, moisture and nutrients uptake were higher in intercropping systems compared to sole crop systems. Regarding to weed control, intercrops were more effective than sole crops and it was related to lower availability of environmental resources for weeds in intercropping systems.
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