Abstract
Lack of adequate organic matter (OM) in the agricultural soils of Iran is responsible for the poor physical condition of these soils. Thus, increasing soil OM is very important. On the other hand, the eutrophication of surface water caused by continuous use of phosphorus (P) fertilizer has created an interest in the combined use of organic wastes and P fertilizer. Hence, the present study was undertaken to study the effects of several levels of municipal waste compost (MWC), poultry manure (PM) and P on the growth and elemental composi-tion of lowland rice (Oryza sativa L.) and on selected soil chemical characteristics. There was a consistent increase in the shoot dry weight as the levels of MWC, PM or P increased. How-ever, rice shoot growth was stimulated more by MWC than by PM and the enhancing effect of P on shoot growth was greater in MWC-treated plants than that of PM. Shoot P concen-tration increased with increasing levels of MWC, PM and P, whereas nitrogen (N) concen-tration was only affected significantly by the two organic wastes. Iron (Fe) and zinc (Zn) concentration was suppressed by P supply in PM-amended soil and was not affected by MWC treatment. Rice seedlings treated with either of the biosolids accumulated more Fe,
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Claims 11
Claim · model-written summary
Shoot dry weight rose with increasing municipal waste compost.
Not reportedComparator
Verbatim
e0“There was a consistent increase in the shoot dry weight as the levels of MWC, PM or P increased”
t0“Lowland Rice”
Claim · model-written summary
Shoot dry weight rose with increasing poultry manure.
Not reportedComparator
Verbatim
e0“There was a consistent increase in the shoot dry weight as the levels of MWC, PM or P increased”
t0“Lowland Rice”
Claim · model-written summary
Shoot dry weight rose with increasing phosphorus.
Not reportedComparator
Verbatim
e0“There was a consistent increase in the shoot dry weight as the levels of MWC, PM or P increased”
t0“Lowland Rice”
Claim · model-written summary
Compost stimulated shoot growth more than poultry manure.
Oryza sativaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice shoot growth was stimulated more by MWC than by PM”
Claim · model-written summary
Phosphorus enhanced shoot growth more with compost than with poultry manure.
Verbatim
e0“enhancing effect of P on shoot growth was greater in MWC-treated plants than that of PM”
t0“Lowland Rice”
Claim · model-written summary
Shoot phosphorus concentration increased with compost levels.
Not reportedComparator
Verbatim
e0“Shoot P concen-tration increased with increasing levels of MWC, PM and P”
t0“Lowland Rice”
Claim · model-written summary
Shoot phosphorus concentration increased with poultry manure levels.
Not reportedComparator
Verbatim
e0“Shoot P concen-tration increased with increasing levels of MWC, PM and P”
t0“Lowland Rice”
Claim · model-written summary
Shoot phosphorus concentration increased with phosphorus supply.
Not reportedComparator
Verbatim
e0“Shoot P concen-tration increased with increasing levels of MWC, PM and P”
t0“Lowland Rice”
Claim · model-written summary
Nitrogen concentration was significantly affected by the two organic wastes.
Not reportedComparatorDirection
Verbatim
e0“nitrogen (N) concen-tration was only affected significantly by the two organic wastes”
t0“Lowland Rice”
Claim · model-written summary
Phosphorus suppressed iron and zinc concentration in manure-amended soil.
- Taxon
- Lowland Ricet0
- Treatment
- P supplye0
- Outcome
- Iron (Fe) and zinc (Zn) concentratione0
- Direction
- suppressede0
- Qualifier
- PM-amended soile0
Not reportedComparator
Verbatim
e0“Iron (Fe) and zinc (Zn) concentration was suppressed by P supply in PM-amended soil”
t0“Lowland Rice”
Claim · model-written summary
Compost did not affect iron and zinc concentration.
- Taxon
- Lowland Ricet0
- Treatment
- MWC treatmente0
- Outcome
- Iron (Fe) and zinc (Zn) concentratione0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“Iron (Fe) and zinc (Zn) concentration was suppressed by P supply in PM-amended soil and was not affected by MWC treatment”
t0“Lowland Rice”
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