نتایج جستجو برای: weed control
تعداد نتایج: 1336080 فیلتر نتایج به سال:
Journal:
:Proceedings of the New Zealand Weed and Pest Control Conference
1972
Journal:
:Proceedings of the New Zealand Weed and Pest Control Conference
1982
2010
A J MCDONALD
S J RIHA
Weed interference in annual cropping systems can be highly variable from year-to-year, as well as spatially heterogeneous. These factors have confounded efforts to develop simple methods for predicting competitive outcomes early in the growing season. A 2-year study was conducted with maize in competition with four annual weed species (Setaria faberi, Abutilon theophrasti, Chenopodium album and...
Journal:
:The Journal of Agriculture of the University of Puerto Rico
1969
Journal:
:The Journal of Agriculture of the University of Puerto Rico
1969
Journal:
:Proceedings of the New Zealand Weed Control Conference
1957
Journal:
:Proceedings of the New Zealand Weed Control Conference
1954
Journal:
:Proceedings of the New Zealand Weed Control Conference
1956
Journal:
:Proceedings of the New Zealand Weed and Pest Control Conference
1968
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید