4. Discussion
Yield was closely related to crop biomass production and may
be used as an indicator of the amount of resources captured by
a crop component. Weeds growth decreased considerably as the
biomass production of crop increased. Therefore, minimum weed
biomass and weed species had been noticed in intercropping systems,
particularly in 2:2 row arrangements. Liebman and Dyck [16]
explained such weed control advantages through intercropping
either by weed-suppression or by weed-tolerance or by conversion
of resources to harvestable material more efficiently than sole
crop. Weed took advantages of the initial slow growth rate and
wider spacing of sole cropped baby corn,therefore,maximumweed
biomass and weed density were observed under this treatment.
Crop type affected weed community composition even though it
did not alter species number in sole cropping systems. However,the density and canopy cover was consistently more important in
this regard. Differences in fertilization between crops could also
explain some differences in the weed communities. Application of
more N to the baby corn than the legumes might have decreased
weed occurrence in legumes