Abstract
The present study was conducted at Agricultural Research Station, Grmat Ali, College of Agriculture, University of Basra, Iraq, during the agricultural season of 2013-2014. The aim was to study the effect of covering soil surface by black plastic and two levels of irrigation either adding water at 60% or 100% of field capacity. As well as the effect of three levels of nitrogen ( 0, 30, and 60 mg N kg-1 ) and three levels of phosphorus (0, 40 , and 80 mg p kg-1). Pots divided into two groups, with and without soil coverage. Pots were planted with ten corn grains with maintain soil moisture at field capacity till germination and seedling coloring, number of seedling thinned to five. Plants harvested after 60 days from planting, and were dried and weighted. Plant samples were analyzed for nitrogen and phosphorus. Results showed that coverage treatments had increased dry matter of corn shoots and the uptake of nitrogen and phosphorus. The results also showed the superiority of irrigation at 100% field capacity in comparison with 60% of field capacity. Increasing levels of nitrogen and phosphorus caused significant increase in dry weight, nitrogen and phosphorus concentrations and their uptake.
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Claims 6
Claim · model-written summary
Black plastic soil coverage increased corn shoot dry matter and nitrogen and phosphorus uptake compared with uncovered pots.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- coverage treatmentse0
- Outcome
- dry matter of corn shoots and the uptake of nitrogen and phosphoruse0
- Direction
- increasede0
- Comparator
- without soil coveragee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“coverage treatments had increased dry matter of corn shoots and the uptake of nitrogen and phosphorus”
e1“with and without soil coverage”
Claim · model-written summary
Irrigation at 100% of field capacity was superior to 60% of field capacity for corn.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- irrigation at 100% field capacitye0
- Outcome
- superioritye0
- Direction
- superioritye0
- Comparator
- 60% of field capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Plant”
e0“the superiority of irrigation at 100% field capacity in comparison with 60% of field capacity”
Claim · model-written summary
Increasing nitrogen levels significantly increased corn dry weight and nitrogen and phosphorus concentrations.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- nitrogene0
- Outcome
- dry weight, nitrogen and phosphorus concentrationse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Plant”
e0“Increasing levels of nitrogen and phosphorus caused significant increase in dry weight, nitrogen and phosphorus concentrations and their uptake”
Claim · model-written summary
Increasing nitrogen levels significantly increased corn nitrogen and phosphorus uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- nitrogene0
- Outcome
- their uptakee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Plant”
e0“Increasing levels of nitrogen and phosphorus caused significant increase in dry weight, nitrogen and phosphorus concentrations and their uptake”
Claim · model-written summary
Increasing phosphorus levels significantly increased corn dry weight and nitrogen and phosphorus concentrations.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- phosphoruse0
- Outcome
- dry weight, nitrogen and phosphorus concentrationse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Plant”
e0“Increasing levels of nitrogen and phosphorus caused significant increase in dry weight, nitrogen and phosphorus concentrations and their uptake”
Claim · model-written summary
Increasing phosphorus levels significantly increased corn nitrogen and phosphorus uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- phosphoruse0
- Outcome
- their uptakee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Plant”
e0“Increasing levels of nitrogen and phosphorus caused significant increase in dry weight, nitrogen and phosphorus concentrations and their uptake”
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