Abstract
To study the impact of plant population and nitrogen levels on maize, an experiment was conducted at KPK Agricultural University, Peshawar, Pakistan during summer 2006.The experiment was carried out in randomized complete block (RCB) design with split plot arrangement having four replications. Plant populations (4, 6 and 8 plants m -2 ) were kept in the main plots while nitrogen levels (0, 100, 130 and 160 kg ha -1 ) were allotted to the subplots. The size of each subplot was 3 m × 5 m (15m 2 ) with row to row distance of 75cm. Azam variety was sown at the seed rate of 40 kg ha -1 . The required plant population i.e., 4, 6 and 8 plants m -2 were maintained by thinning after emergence. Ears m -2 , grain yield and biological yield consistently increased with increase in plant density from 4 to 8 plants m -2 . However, grains ear -1 and thousand grain weight lessened with increase in plant density. Harvest index declined with increase in plant density but harvest index of plant densities of 4 and 6 plants m -2 was statistically at par with each other. Ears m -2 , grains ear -1 , thousand grain weight, grain yield, biological yield and harvest index constantly improved with increasing level of N. Likewise, ears m -2 , grains ear -1 , thousand grain weight, grain yield, biological yield and harvest index were higher at the highest level of N. The plant density × nitrogen interactions for ears m -2 , grains ear -1 and grain yield were significant. Ears m -2 , grains ear -1 and grain yield continually enhanced with increase in N level from 0 to 160 kg ha -1 at all plant densities. It was concluded that the highest plant population of 8 plants m -2 and the highest N level of 160 kg ha -1 resulted in higher yield of maize.
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Claims 9
Claim · model-written summary
Ears per m2, grain yield and biological yield of maize increased consistently as plant density rose from 4 to 8 plants per m2.
- Treatment
- plant density from 4 to 8 plants m -2e0
- Outcome
- Ears m -2 , grain yield and biological yielde0
- Direction
- increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ears m -2 , grain yield and biological yield consistently increased with increase in plant density from 4 to 8 plants m -2”
t0“maize”
Claim · model-written summary
Grains per ear and thousand grain weight of maize decreased with increasing plant density.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grains ear -1 and thousand grain weight lessened with increase in plant density”
t0“maize”
Claim · model-written summary
Harvest index of maize declined with increasing plant density.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvest index declined with increase in plant density”
t0“maize”
Claim · model-written summary
Harvest index at plant densities of 4 and 6 plants per m2 was statistically at par.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harvest index of plant densities of 4 and 6 plants m -2 was statistically at par with each other”
t0“maize”
Claim · model-written summary
Ears per m2, grains per ear and thousand grain weight of maize improved with increasing N level.
- Treatment
- increasing level of Ne0
- Outcome
- Ears m -2 , grains ear -1 , thousand grain weighte0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ears m -2 , grains ear -1 , thousand grain weight, grain yield, biological yield and harvest index constantly improved with increasing level of N”
t0“maize”
Claim · model-written summary
Grain yield, biological yield and harvest index of maize improved with increasing N level.
- Treatment
- increasing level of Ne0
- Outcome
- grain yield, biological yield and harvest indexe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ears m -2 , grains ear -1 , thousand grain weight, grain yield, biological yield and harvest index constantly improved with increasing level of N”
t0“maize”
Claim · model-written summary
The plant density by nitrogen interactions for ears per m2, grains per ear and grain yield were significant.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant density × nitrogen interactions for ears m -2 , grains ear -1 and grain yield were significant”
t0“maize”
Claim · model-written summary
Ears per m2, grains per ear and grain yield of maize continually increased with N from 0 to 160 kg per ha at all plant densities.
- Treatment
- N level from 0 to 160 kg ha -1e0
- Outcome
- Ears m -2 , grains ear -1 and grain yielde0
- Direction
- enhancede0
- Qualifier
- at all plant densitiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ears m -2 , grains ear -1 and grain yield continually enhanced with increase in N level from 0 to 160 kg ha -1 at all plant densities”
t0“maize”
Claim · model-written summary
The authors concluded that the highest plant population of 8 plants per m2 together with the highest N level of 160 kg per ha gave higher maize yield.
- Treatment
- highest plant population of 8 plants m -2 and the highest N level of 160 kg ha -1e0
- Outcome
- higher yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that the highest plant population of 8 plants m -2 and the highest N level of 160 kg ha -1 resulted in higher yield of maize”
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See all 2,185 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.