Abstract
Although fungicidal properties of phosphite have been recognized, its use as a fertilizer-P is still being debated. The objective of this study was to evaluate the effect of foliar-applied phosphite (HPO3−2) on the growth and yield of corn (Zea mays L.). Traditional fertilizer-P was also applied to compare the efficacy of phosphite. Dry matter yield, grain yield, and tissue P concentrations (grain, leaf, and stem) were evaluated in two field and two greenhouse studies in Oklahoma for 2 years. A commercial phosphite solution which contains 200 g P kg−1 was sprayed at the rate of 2.34 L ha−1 at different growth stages. Foliar phosphite did not increase dry matter and grain yield. In general, P concentrations in the grain, leaf, and stem were unaffected regardless of number of applications. Farmers should take with caution while using phosphite as a fertilizer to correct P deficiency for corn production.
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Claims 4
Claim · model-written summary
Foliar phosphite did not increase corn dry matter yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar phosphite did not increase dry matter and grain yield.”
t0“corn (Zea mays L.)”
Claim · model-written summary
Foliar phosphite did not increase corn grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar phosphite did not increase dry matter and grain yield.”
t0“corn (Zea mays L.)”
Claim · model-written summary
Phosphite application number generally did not change phosphorus concentrations in corn grain, leaf and stem.
- Treatment
- foliar-applied phosphitee1
- Outcome
- P concentrations in the grain, leaf, and steme0
- Direction
- unaffectede0
- Qualifier
- regardless of number of applicationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, P concentrations in the grain, leaf, and stem were unaffected regardless of number of applications.”
t0“corn (Zea mays L.)”
e1“The objective of this study was to evaluate the effect of foliar-applied phosphite (HPO3−2) on the growth and yield of corn (Zea mays L.).”
Claim · model-written summary
The authors advise caution in using phosphite fertilizer to correct phosphorus deficiency in corn production.
- Taxon
- corn
Zea mays subsp. mayse0 - Outcome
- take with caution while using phosphite as a fertilizer to correct P deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Farmers should take with caution while using phosphite as a fertilizer to correct P deficiency for corn production.”
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