Abstract
Abstract Foliar fertilizers are often used in cotton (Gossypium hirsutum L.) production systems across the U.S. Cotton Belt. Their usefulness, however, in producing high yielding, high quality cotton remains to be resolved. This study was conducted to determine the effects of foliar fertilizers on cotton leaf phosphorous (P), potassium (K), zinc (Zn), iron (Fe), manganese (Mn), boron (B), and calcium (Ca) concentrations and yield distribution. During the 1990 growing season, this study was conducted at the Texas Tech University Research Farm east of New Deal, TX on a Pullman clay loam (fine, mixed, superactive thermic, Torrertic Paleustoll). Six foliar treatments were incorporated into a randomized complete block design with six blocks. Treatments 2(15–2–0 with Ca), 3 (8–32–5 with Mn, Fe, Zn, and B), and 4 [8–8–8 with Mn, Fe, Zn, B, and copper (Cu)] were commercial products and were applied according to their manufacturers recommendations. Treatments 5 and 6 (46–0–0) were applied at various rates. During the 1991 growing season, this study was conducted at an on‐farm location northeast of Petersburg, TX. The soil at this location was also a Pullman clay loam. The same six foliar treatments were incorporated into a randomized complete block design with four blocks. Foliar treatments were applied during both growing seasons at 0, 2, 4, 6, and 8 weeks after square initiation. One week after each treatment application, ten plants were removed from each plot and divided into three nodal horizons: (1) from node six to node nine, (2) from node ten to node thirteen, and (3) node fourteen and above. Leaf nutrient concentrations were determined by these nodal horizons. Numbers of first and second position fruit per plant were also determined within these nodal horizons. Leaf Zn, Fe, Mn, and B were increased by one of the commercial products in this investigation. However, none of these elements were deficient in the untreated plots and the observed increases were beyond the plant required concentrations. Cost‐benefit analyses were not conducted due to the lack of a significant yield response from the foliar fertilizers. We conclude that none of the costs associated with foliar fertilization will be recovered in net returns.
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Claims 4
Claim · model-written summary
A commercial foliar fertilizer increased leaf Zn, Fe, Mn and B concentrations.
- Taxon
- cotton
Gossypium hirsutume1 - Organ / stage
- Leafe0
- Treatment
- one of the commercial productse0
- Outcome
- Leaf Zn, Fe, Mn, and Be0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf Zn, Fe, Mn, and B were increased by one of the commercial products in this investigation”
e1“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
None of the measured elements was deficient in untreated cotton plots.
- Taxon
- cottonGossypium hirsutume1
- Outcome
- none of these elements were deficiente0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“none of these elements were deficient in the untreated plots”
e1“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
Foliar fertilizers produced no significant yield response.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- foliar fertilizerse0
- Outcome
- yield responsee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lack of a significant yield response from the foliar fertilizers”
e1“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
The authors concluded that foliar fertilization costs would not be recovered in net returns.
- Taxon
- cottonGossypium hirsutume1
- Outcome
- none of the costs associated with foliar fertilization will be recovered in net returnse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“none of the costs associated with foliar fertilization will be recovered in net returns”
e1“cotton (Gossypium hirsutum L.)”
The same questions in other papers
application · yield · Gossypium hirsutum (cotton)Positive and negative results
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See all 283 papers →fertilization · yield · Gossypium hirsutum (cotton)Positive and negative results
52 papers in the same direction as this paper · 497 in the opposite direction
- no effect
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See all 550 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.