Seasonal changes in weed communities of inbred maize lines with different weed control

A three-year research (1993-95) of maize in Eastern Croatia indicated major differences in weed composition and weed infestation values depending on soil type, climatic conditions and seasonal aspects. On untreated controls, the dominant species on eutric cambisol (Sorghum halepense, Ambrosia artemisiifolia and Echinochloa crus galli) had higher infestation levels during the season, relative to main weed species on lessive pseudogleic (Amaranthus retroflexus) and lessive soil type (Polygonum lapathifolium). The application of different weed control (two hoeings ; metolachlor + atrazine mixture broadcast application ; metolachlor + atrazine mixture band spraying and rimsulfuron single application) gave 96%, 93%, 79% and 93% weed control. In the same variants the yield of female inbred maize lines was increased 130% 123%, 65% and 92%.