Abstract
Maintaining soil fertility and the use of plant nutrient in sufficient and balanced amounts is one of the key factors in increasing crop yield and decreasing adverse environmental effects and pollutions arising from nonpoint fertilizer usage. The effects of time and rate of nitrogen application on phenology and some agronomical traits of corn (Zea mays L.) were investigated at the research farm of the University of Mohaghegh Ardabili. The trial was laid out in a split plot design based on a randomized complete block scheme with three replications. Experimental factors were nitrogen fertilizer at four levels (0, 75, 150, and 225 kg ha–1) in the main plots and three levels of nitrogen application time [(1/3 at sowing + 1/3 at V8–10 + 1/3 at tasseling), (1/2 at sowing + 1/2 at tasseling), and (1/2 at sowing + 1/4 at V8–10 + 1/4 at tasseling) as T1, T2, and T3, respectively] as subplots. The results showed that the maximum values of grain yield and its components, days to 50% tasseling (63.85 days), days to 50% silking (68.2 days), days to physiological maturity (128.9 days) were observed in the plots treated with 225 kg N ha–1 as T1. The maximum nitrogen use efficiency (38.16 kg kg–1) was obtained at application of 75 kg N ha–1 as T1, and the minimum values of this index (19.41 kg kg–1) were obtained in the plots that received 225 kg N ha–1 as T2. Based on the results, it was concluded that application of the highest N fertilizer rate (225 kg ha–1) in three equal splits can be recommended for profitable corn production.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
The 225 kg N ha–1 T1 treatment maximized grain yield and components.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the maximum values of grain yield and its components, days to 50% tasseling (63.85 days), days to 50% silking (68.2 days), days to physiological maturity (128.9 days) were observed in the plots treated with 225 kg N ha–1 as T1”
t0“maize (Zea mays L.)”
Claim · model-written summary
The 225 kg N ha–1 T1 treatment gave the maximum days to 50% tasseling, 63.85 days.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“days to 50% tasseling (63.85 days), days to 50% silking (68.2 days), days to physiological maturity (128.9 days) were observed in the plots treated with 225 kg N ha–1 as T1”
t0“maize (Zea mays L.)”
Claim · model-written summary
The 225 kg N ha–1 T1 treatment gave 68.2 days to 50% silking.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“days to 50% tasseling (63.85 days), days to 50% silking (68.2 days), days to physiological maturity (128.9 days) were observed in the plots treated with 225 kg N ha–1 as T1”
t0“maize (Zea mays L.)”
Claim · model-written summary
The 225 kg N ha–1 T1 treatment gave 128.9 days to physiological maturity.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“days to 50% tasseling (63.85 days), days to 50% silking (68.2 days), days to physiological maturity (128.9 days) were observed in the plots treated with 225 kg N ha–1 as T1”
t0“maize (Zea mays L.)”
Claim · model-written summary
The maximum nitrogen use efficiency was 38.16 kg kg–1 at 75 kg N ha–1 as T1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum nitrogen use efficiency (38.16 kg kg–1) was obtained at application of 75 kg N ha–1 as T1”
t0“maize (Zea mays L.)”
Claim · model-written summary
The minimum nitrogen use efficiency was 19.41 kg kg–1 at 225 kg N ha–1 as T2.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the minimum values of this index (19.41 kg kg–1) were obtained in the plots that received 225 kg N ha–1 as T2”
t0“maize (Zea mays L.)”
Claim · model-written summary
The authors recommend 225 kg ha–1 nitrogen in three equal splits for profitable corn production.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- 225 kg ha–1e0
- Outcome
- profitable corn productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the highest N fertilizer rate (225 kg ha–1) in three equal splits can be recommended for profitable corn production”
The same questions in other papers
nitrogen · nutrient: efficiency · Zea mays (maize)Positive and negative results
141 papers in the same direction as this paper · 42 in the opposite direction · 10 reporting no difference from an alternative
- positive
- negative
- negative
190 papers more in this group
See all 194 papers →nitrogen · yield · Zea mays (maize)Positive and negative results
1,905 papers in the same direction as this paper · 234 in the opposite direction · 45 reporting no difference from an alternative
- no effect
- positive
- positive
2,181 papers more in this group
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.