Abstract
Abstract: In order to evaluation of plant density and nitrogen fertilizer on yield, yield components and some other traits of Maize (Zea mays) in Ardabil region, Iran, an split-plot experiment based on randomized complete block design was conducted with three replications in 2006. Main- plots were allocated to nitrogen levels 1 2 (0, 75 and 150 kg ha) and sub-plots to plant densities (7, 9 and 11 plant m). Results showed that increase in density resulted in increase in yield per hectare and decrease in yield and yield components per plant. Also, increase in nitrogen application led to increase in yield and yield components. With increasing nitrogen level, leaf appearance rate was increased and Phyllochron was decreased. Also, with increasing density, Phyllochron was increased and leaf appearance rate was decreased. The highest leaf appearance rate and the shortest time 2 1 for Phyllochron was obtained at 7 plant m and 150 kg ha nitrogen treatment. Vegetative growth period was increased as a result of increase in density and nitrogen. Time of appearance of pollens was decreased with 2 1 increasing density and at 11 plant m and 150 kg ha nitrogen, this time was longer than other treatments. Flowering conformity period was decreased with increasing density and nitrogen had no significant effect on 2 1 this trait and the longest period was related to 7 plant m and 75 kg ha nitrogen. Totally, with increasing density and nitrogen, yield of Maize was increased. Key words: Phyllochron Leaf appearance rate Flowering conformity period Maize and Yield
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Claims 16
Claim · model-written summary
Higher density increased yield per hectare.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in density resulted in increase in yield per hectare”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher density decreased yield and yield components per plant.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in density resulted in increase in yield per hectare and decrease in yield and yield components per plant”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher nitrogen increased yield and yield components.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in nitrogen application led to increase in yield and yield components”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher nitrogen increased leaf appearance rate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing nitrogen level, leaf appearance rate was increased”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher nitrogen decreased phyllochron.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing nitrogen level, leaf appearance rate was increased and Phyllochron was decreased”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher density increased phyllochron.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with increasing density, Phyllochron was increased”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher density decreased leaf appearance rate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with increasing density, Phyllochron was increased and leaf appearance rate was decreased”
e1“Maize (Zea mays)”
Claim · model-written summary
The lowest density with highest nitrogen gave the highest leaf appearance rate.
- Treatment
- 7 plant m and 150 kg ha nitrogen treatmente0
- Outcome
- leaf appearance ratee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest leaf appearance rate and the shortest time 2 1 for Phyllochron was obtained at 7 plant m and 150 kg ha nitrogen treatment”
e1“Maize (Zea mays)”
Claim · model-written summary
The lowest density with highest nitrogen gave the shortest phyllochron.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest leaf appearance rate and the shortest time 2 1 for Phyllochron was obtained at 7 plant m and 150 kg ha nitrogen treatment”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher density extended the vegetative growth period.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vegetative growth period was increased as a result of increase in density and nitrogen”
e1“Maize (Zea mays)”
Claim · model-written summary
Higher nitrogen extended the vegetative growth period.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vegetative growth period was increased as a result of increase in density and nitrogen”
e1“Maize (Zea mays)”
Claim · model-written summary
Increasing density reduced time to pollen appearance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Time of appearance of pollens was decreased with 2 1 increasing density”
e1“Maize (Zea mays)”
Claim · model-written summary
At the highest density and nitrogen rate, time to pollen appearance exceeded other treatments.
- Treatment
- 11 plant m and 150 kg ha nitrogene0
- Outcome
- this timee0
- Direction
- longere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 11 plant m and 150 kg ha nitrogen, this time was longer than other treatments”
e1“Maize (Zea mays)”
Claim · model-written summary
Increasing density shortened flowering conformity period.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flowering conformity period was decreased with increasing density”
e1“Maize (Zea mays)”
Claim · model-written summary
Nitrogen had no significant effect on flowering conformity period.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flowering conformity period was decreased with increasing density and nitrogen had no significant effect on 2 1 this trait”
e1“Maize (Zea mays)”
Claim · model-written summary
The longest flowering conformity period occurred at 7 plant m and 75 kg ha nitrogen.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the longest period was related to 7 plant m and 75 kg ha nitrogen”
e1“Maize (Zea mays)”
e2“Flowering conformity period was decreased”
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1,905 papers in the same direction as this paper · 234 in the opposite direction · 45 reporting no difference from an alternative
- positive
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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.