Claim · model-written summary
A further increase in crop density beyond a certain level did not decrease the size of wild oats.
- Taxon
- cereal cropst0
- Treatment
- further increase in crope4
- Outcome
- size of wild oatse4
- Direction
- did not decreasee4
- Qualifier
- Beyond a certain crop density dependent on soil fertilitye4
AvenaNot reportedComparator
Verbatim
t0“COMPETITION FROM CEREAL CROPS ON THE GERMINATION”
e4“Beyond a certain crop density dependent on soil fertility, further increase in crop did not decrease the size of wild oats”
Title
JOAN M. THURSTON Weed Research 1962. doi:10.1111/j.1365-3180.1962.tb00199.x
Other claims from this paper (12)
- Association Wild oats were controlled by a dense crop of an autumn-sown cereal.
- Association The effectiveness of cereal crops against wild oats depended on crop density when the wild oats germinated in spring.
- Association The crop genus was unimportant for the effectiveness against wild oats, provided the crop grew well on the site.
- Intervention effect Winter wheat and winter rye were equally effective in controlling wild oats.
- Intervention effect Wild oats grew much less vigorously in a light barley crop than on fallow plots.
- Intervention effect The heaviest crop did not completely suppress wild oats.
- Mechanism The crop affected wild oats mainly by decreasing seedling growth.
- Mechanism Some wild oat seeds may have remained dormant under winter wheat and winter rye, perhaps because the crops decreased soil moisture.
- Intervention effect Nitrogenous fertilizer increased the weight of both crops and wild oats.
- Association Barley was more severely affected by soil acidity than wild oats.
- Intervention effect On acid areas of barley plots, wild oats were larger than where the pH was higher.
- Intervention effect In wheat and rye scarcely affected by soil acidity, the size of wild oat plants was unaffected by soil pH.