Naslov
Effects of soil tillage and herbicides on weeds and winter wheat yields

Autori
Knežević, Mira ; Ranogajec, Ljubica ; Šamota Davor

Izvornik
Cereal Research Communications (0133-3720) 36 (2008), Part 3 Suppl. 5; 1403-1406

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
winter wheat ; soil tillage ; herbicides ; weed density ; weed biomass ; crop yields

Sažetak
The effects of three tillage systems and the post-emergence chemical weed control of annual broad-leaved weeds in winter wheat were studied on lessive pseudogley soil in north-eastern Croatia from 2001 to 2006. Total weed biomass on untreated plots was the lowest in continuous mouldborad ploughing (498 kg ha-1), medium in chisel ploughing (909 kg ha-1) and highest in continuous disk harrowing (1873 kg ha-1) with statistically significant differences (P < 0.01). The most abundant species were annual broad-leaved species of Matricaria inodora, Ambrosia artemisiifolia, Galium aparine, and Stellaria media, which constituted 75, 61 and 41% of total weed biomass in mouldboard-, chisel ploughing and disk harrowing, respectively. Three herbicide mixtures of iodosulfuron - methyl sodium + mefenpyr- diethyl, fluoroglycofene-ethyl + triasulfuron and 2.4 ethylhexyl ester + metosulam in low doses provided a successful biomass control of dominant annual broad-leaved weeds (89-100% control). Herbicide treatments gave significantly higher yields than untreated controls with an average yield increasing of 3, 7 and 5% in mouldboard-, chisel ploughing and disk harrowing, respectively. The yields did not differ among herbicide mixtures. Compared to the highest yield with mouldboard ploughing (6.1 t ha-1), average yield depressions with chisel ploughing and disk harrowing were 3 and 5%, respectively.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA