Abstract
ABSTRACT Upland cotton (Gossypium hirsutum) requires adequate nitrogen (N) for optimum yields. Foliar applications of urea to supplement soil applied N have been tried for many years across the Cotton Belt, but responses have been highly variable. No published information is available regarding response by irrigated cotton to foliar applied N in subtropical South Texas. This study investigated the response of cotton to foliar applied urea and triazone N over a three-year period near Weslaco, Texas. In all years, foliar applied urea tended to increase seed cotton yield when soil applied N was limiting. In the absence of soil applied N, the increase due to foliar urea was significant in two of the three years (28.7 and 15.7% increases). Foliar applied triazone N was ineffective at increasing seed cotton yields.
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Claims 4
Claim · model-written summary
Foliar urea tended to increase seed cotton yield when soil nitrogen was limiting.
- Taxon
- Upland cottone1
- Treatment
- foliar applied ureae0
- Outcome
- seed cotton yielde0
- Direction
- increasee0
- Qualifier
- when soil applied N was limitinge0
- Setting
- near Weslaco, Texase2
Not reportedComparator
Verbatim
e0“In all years, foliar applied urea tended to increase seed cotton yield when soil applied N was limiting.”
e1“Upland cotton (Gossypium hirsutum)”
e2“near Weslaco, Texas”
Claim · model-written summary
Without soil nitrogen, foliar urea significantly increased cotton yield by 28.7% in one year.
- Taxon
- Upland cottone2
- Treatment
- foliar ureae0
- Outcome
- seed cotton yielde1
- Direction
- increasee0
- Value
- 28.7e0
- Qualifier
- In the absence of soil applied Ne0
Not reportedComparator
Verbatim
e0“In the absence of soil applied N, the increase due to foliar urea was significant in two of the three years (28.7 and 15.7% increases).”
e1“increase seed cotton yield when soil applied N was limiting”
e2“Upland cotton (Gossypium hirsutum)”
Claim · model-written summary
Without soil nitrogen, foliar urea significantly increased cotton yield by 15.7% in another year.
- Taxon
- Upland cottone2
- Treatment
- foliar ureae0
- Outcome
- seed cotton yielde1
- Direction
- increasese0
- Value
- 15.7%e0
- Qualifier
- In the absence of soil applied Ne0
Not reportedComparator
Verbatim
e0“In the absence of soil applied N, the increase due to foliar urea was significant in two of the three years (28.7 and 15.7% increases).”
e1“increase seed cotton yield when soil applied N was limiting”
e2“Upland cotton (Gossypium hirsutum)”
Claim · model-written summary
Foliar triazone nitrogen did not increase seed cotton yield.
- Taxon
- Upland cottone1
- Treatment
- Foliar applied triazone Ne0
- Outcome
- seed cotton yieldse0
- Direction
- ineffective at increasinge0
Not reportedComparator
Verbatim
e0“Foliar applied triazone N was ineffective at increasing seed cotton yields.”
e1“Upland cotton (Gossypium hirsutum)”
The same questions in other papers
application · yield · Gossypium hirsutum (cotton)Positive and negative results
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- positive
- positive
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See all 283 papers →nitrogen · yield · Gossypium hirsutum (cotton)Positive and negative results
285 papers in the same direction as this paper · 53 in the opposite direction · 4 reporting no difference from an alternative
- no effect
- positive
- positive
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See all 343 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.