Abstract
The aim of this study was to evaluate the effect of nitrogen and plant density on some morphological and agronomic characteristics of grain sorghum in the years 2001-2002. Experimental design was a split-split, randomized complete block with three replications. Three nitrogen levels (0, 75 and 150 kg ha-1) and plant densities (70x10, 70x20 and 70x30 cm) were applied in three grain sorghum cultivars. Generally, nitrogen and plant density had no effect on plant height and stalk length. The effect of nitrogen on grain yield per plant was usually non-significant and increased plant densities tended to increase grain yield per plant. Both nitrogen and plant density have positively affected grain yield per unit area. The effects of cultivar, nitrogen level and plant density on flag leaf area were changeable and dependent on both years and locations. One thousand grain weight was mainly determined by both cultivar and plant density. It may be concluded that increased nitrogen and plant density levels generally give the best results in grain yield and yield components in sorghum.
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Claims 9
Claim · model-written summary
Nitrogen generally had no effect on sorghum plant height and stalk length.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Generally, nitrogen and plant density had no effect on plant height and stalk length.”
Claim · model-written summary
Plant density generally had no effect on sorghum plant height and stalk length.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Generally, nitrogen and plant density had no effect on plant height and stalk length.”
Claim · model-written summary
Nitrogen usually had a nonsignificant effect on grain yield per plant.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“The effect of nitrogen on grain yield per plant was usually non-significant”
Claim · model-written summary
Higher plant densities tended to increase grain yield per plant.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“increased plant densities tended to increase grain yield per plant”
Claim · model-written summary
Nitrogen positively affected grain yield per unit area.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Both nitrogen and plant density have positively affected grain yield per unit area.”
Claim · model-written summary
Plant density positively affected grain yield per unit area.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Both nitrogen and plant density have positively affected grain yield per unit area.”
Claim · model-written summary
Effects of cultivar, nitrogen and density on flag leaf area varied with year and location.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“The effects of cultivar, nitrogen level and plant density on flag leaf area were changeable and dependent on both years and locations.”
Claim · model-written summary
Cultivar and plant density mainly determined thousand grain weight.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“One thousand grain weight was mainly determined by both cultivar and plant density.”
Claim · model-written summary
The authors conclude that increased nitrogen and plant density generally give the best grain yield and yield component results.
- Outcome
- increased nitrogen and plant density levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased nitrogen and plant density levels generally give the best results in grain yield and yield components in sorghum”
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