Abstract
Two field experiments were conducted in Kenya to investigate the effects of weed control on the yield and forage quality of newly introduced cold tolerant high altitude sorghums, using weed control methods in current use for maize production. All methods of weed control yielded considerably more than the control. The pre-emergence application of atrazine at 2.0 kg a.i./ha was the preferred method, and the sorghum cultivars studied proved tolerant to this rate of application. When plant populations were reduced by herbicide toxicity, the surviving sorghum plants produced more tillers, thus partly offsetting the effect on yield. Cultivars with a genetic ability to produce many tillers had an advantage over those which tiller less readily. The grain type cultivars studied belonged to the 2nd group, while the forage type sorghums belonged to the first
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Claims 6
Claim · model-written summary
All weed-control methods increased sorghum yield compared with control.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All methods of weed control yielded considerably more than the control”
t0“sorghum”
Claim · model-written summary
Pre-emergence atrazine at 2.0 kg a.i./ha was the preferred weed-control method.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pre-emergence application of atrazine at 2.0 kg a.i./ha was the preferred method”
t0“sorghum”
Claim · model-written summary
Studied sorghum cultivars tolerated atrazine at 2.0 kg a.i./ha.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sorghum cultivars studied proved tolerant to this rate of application”
e1“atrazine at 2.0 kg a.i./ha”
Claim · model-written summary
After herbicide toxicity reduced populations, surviving sorghum plants produced more tillers, partly offsetting yield loss.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When plant populations were reduced by herbicide toxicity, the surviving sorghum plants produced more tillers, thus partly offsetting the effect on yield”
Claim · model-written summary
Cultivars capable of producing many tillers had an advantage over less-tillering cultivars.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars with a genetic ability to produce many tillers had an advantage over those which tiller less readily”
t0“sorghum”
Claim · model-written summary
Grain cultivars were less-tillering while forage sorghums were in the high-tillering group.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain type cultivars studied belonged to the 2nd group, while the forage type sorghums belonged to the first”
The same questions in other papers
atrazine · disease · SorghumResults agree
2 papers in the same direction as this paper
- positive
- positive
herbicide · yield · SorghumResults differ
51 papers in the same direction as this paper · 11 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- no effect
62 papers more in this group
See all 66 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.