Abstract
Phosphorus (P) supply to crops is a major constraint on the quantity and quality of food production in tropical soils, which are often characterized by highly weathered soils having low phosphorus use efficiency. Increasing P fertilizer use efficiency is a good tool for increasing food production to feed an increasing world population. Enhanced efficiency P fertilizer is used to achieve this goal. The lack of information about soil P diffusive flux and corn and common bean yield response with increased efficiency P fertilizers justify studies to evaluate the performance of this type of fertilizer. The aims of this study were to evaluate P diffusive flux and corn and common bean crop response to P sources and rates. A laboratory trial was carried out to evaluate soil P diffusive flux in response to P sources (MAP and Policote coated MAP). Field trials were carried out to evaluate corn and common bean yields in response to P sources (MAP and Policote coated MAP) and rates. Policote, an additive based on water-soluble polymers, is an anionic copolymer with iron an aluminum affinity. Increasing contact time between P-fertilizers and soil reduced phosphorus diffusive flux. Policote coated P-fertilizer resulted in higher phosphorus diffusion than conventional phosphorus fertilizer. Phosphorus fertilization increased corn and common bean yields. Policote coated phosphorus fertilizer resulted in higher agronomic P efficiency use, corn, and common bean yields than conventional phosphorus fertilizer. Policote coated P fertilizer can be used as an enhanced efficiency fertilizer and is a more efficient way to deliver required phosphorous to plants. Reducing farm investment, increasing agricultural profits, preserve phosphatic rocks reserves, and avoid the overuse of phosphate fertilizer could be realized through the rational use of enhanced efficiency fertilizers and fertilizer rate use reduction.
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Claims 8
Claim · model-written summary
Longer fertilizer-soil contact reduced phosphorus diffusive flux.
- Treatment
- Increasing contact time between P-fertilizers and soile0
- Outcome
- phosphorus diffusive fluxe0
- Direction
- reducede0
Not reportedTaxon
Verbatim
e0“Increasing contact time between P-fertilizers and soil reduced phosphorus diffusive flux.”
Claim · model-written summary
Policote-coated fertilizer increased soil phosphorus diffusion relative to conventional fertilizer.
- Treatment
- Policote coated P-fertilizere0
- Outcome
- phosphorus diffusione0
- Direction
- highere0
- Comparator
- conventional phosphorus fertilizere0
Not reportedTaxon
Verbatim
e0“Policote coated P-fertilizer resulted in higher phosphorus diffusion than conventional phosphorus fertilizer.”
Claim · model-written summary
Phosphorus fertilization increased corn yield.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Phosphorus fertilizatione0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus fertilization increased corn and common bean yields.”
Claim · model-written summary
Phosphorus fertilization increased common bean yield.
- Taxon
- common bean
Phaseolus vulgarise0 - Treatment
- Phosphorus fertilizatione0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus fertilization increased corn and common bean yields.”
Claim · model-written summary
Policote-coated fertilizer improved agronomic phosphorus-use efficiency versus conventional phosphorus fertilizer.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Policote coated phosphorus fertilizere0
- Outcome
- agronomic P efficiency usee0
- Direction
- highere0
- Comparator
- conventional phosphorus fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Policote coated phosphorus fertilizer resulted in higher agronomic P efficiency use, corn, and common bean yields than conventional phosphorus fertilizer.”
Claim · model-written summary
Policote-coated fertilizer increased corn yield versus conventional phosphorus fertilizer.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Policote coated phosphorus fertilizere0
- Outcome
- corne0
- Direction
- highere0
- Comparator
- conventional phosphorus fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Policote coated phosphorus fertilizer resulted in higher agronomic P efficiency use, corn, and common bean yields than conventional phosphorus fertilizer.”
Claim · model-written summary
Policote-coated fertilizer increased common bean yield versus conventional phosphorus fertilizer.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- Policote coated phosphorus fertilizere0
- Outcome
- common bean yieldse0
- Direction
- highere0
- Comparator
- conventional phosphorus fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Policote coated phosphorus fertilizer resulted in higher agronomic P efficiency use, corn, and common bean yields than conventional phosphorus fertilizer.”
Claim · model-written summary
The authors recommend Policote-coated fertilizer as an efficient phosphorus delivery option for plants.
- Taxon
- Corn and Common Bean CropsPhaseolus vulgarisZea mays subsp. mayst0
- Outcome
- more efficient way to deliver required phosphorous to plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Policote coated P fertilizer can be used as an enhanced efficiency fertilizer and is a more efficient way to deliver required phosphorous to plants.”
t0“Corn and Common Bean Crops”
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