Abstract
Carbond P (CBP) fertilizer often increases P uptake and crop yields in low P and organic matter soils. A glasshouse study was conducted with maize (Zea mays L.) grown in moderate or high organic matter soil with 0, 5, 15, 45, or 135 kg phosphorus pentoxide (P2O5) ha−1 applied as either ammonium polyphosphate (APP) or CBP. In the high organic matter soil, both CBP and APP fertilization resulted in similar increases in biomass yield and P concentration and uptake. This was also observed in the moderate organic matter soil for maize P concentration, but biomass yield and total P uptake were significantly greater for CBP than APP at the two lowest P rates of fertilization and significantly higher for APP than CBP at the highest P application rate. The presence of high organic matter in the soil seemed to negate the effects of the organic acid bonded P found in CBP.
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Claims 7
Claim · model-written summary
In high organic matter soil, CBP and APP similarly increased maize biomass yield.
- Treatment
- CBP and APP fertilizatione0
- Outcome
- biomass yielde0
- Direction
- increasese0
- Setting
- high organic matter soile0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the high organic matter soil, both CBP and APP fertilization resulted in similar increases in biomass yield and P concentration and uptake.”
t0“Maize”
Claim · model-written summary
In high organic matter soil, CBP and APP similarly increased maize P concentration and uptake.
- Treatment
- CBP and APP fertilizatione0
- Outcome
- P concentration and uptakee0
- Direction
- increasese0
- Setting
- high organic matter soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the high organic matter soil, both CBP and APP fertilization resulted in similar increases in biomass yield and P concentration and uptake.”
t0“Maize”
Claim · model-written summary
In moderate organic matter soil, CBP and APP similarly increased maize P concentration.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was also observed in the moderate organic matter soil for maize P concentration”
t0“Carbond P®) Supplied to Maize in Moderate and High Organic Matter Soils”
e1“both CBP and APP fertilization resulted in similar increases in biomass yield and P concentration and uptake”
Claim · model-written summary
At the two lowest phosphorus rates in moderate organic matter soil, CBP gave greater biomass yield than APP.
- Treatment
- CBPe0
- Outcome
- biomass yielde0
- Direction
- greatere0
- Qualifier
- two lowest P rates of fertilizatione0
- Comparator
- APPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass yield and total P uptake were significantly greater for CBP than APP at the two lowest P rates of fertilization”
t0“Maize”
Claim · model-written summary
At the two lowest phosphorus rates in moderate organic matter soil, CBP gave greater total P uptake than APP.
- Treatment
- CBPe0
- Outcome
- total P uptakee0
- Direction
- greatere0
- Qualifier
- two lowest P rates of fertilizatione0
- Comparator
- APPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass yield and total P uptake were significantly greater for CBP than APP at the two lowest P rates of fertilization”
t0“Maize”
Claim · model-written summary
At the highest phosphorus rate, APP gave higher biomass yield than CBP.
- Treatment
- APPe0
- Outcome
- biomass yielde0
- Direction
- highere0
- Qualifier
- highest P application ratee0
- Comparator
- CBPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass yield and total P uptake were significantly greater for CBP than APP at the two lowest P rates of fertilization and significantly higher for APP than CBP at the highest P application rate”
t0“Maize”
Claim · model-written summary
At the highest phosphorus rate, APP gave higher total P uptake than CBP.
- Treatment
- APPe0
- Outcome
- P uptakee0
- Direction
- highere0
- Qualifier
- highest P application ratee0
- Comparator
- CBPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass yield and total P uptake were significantly greater for CBP than APP at the two lowest P rates of fertilization and significantly higher for APP than CBP at the highest P application rate”
t0“Maize”
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