The use of nutrients in crop plants

Abstract

Weed canopy and species composition has been studied in relation with two climatic factors - precipitation and temperature - in a long term trial. 12 years experimental series of winter wheat and maize agronomic trials run at the Szent Istvan University's Nagygombos experimental site have been evaluated regarding coenological performance of weed-crop interrelation. 28 weed species representing 7 phenological types (T1, T2, T2-3, T3, T4, G1 and G3) were examined in relation with seasonal precipitation and temperature prior to their life cycles. Strong correlations were found in cases of various precipitation patterns, however in some cases precipitation x temperature interactions proved to be significant as well.