Abstract
Efficient use of N for maize ( Zea mays L.) production is an important management strategy for increasing crop yield and improving N use efficiency (NUE). A 2‐yr (2007 and 2008) field experiment was conducted to evaluate the effect of timing and rate of N application on growth and yield, N uptake, and NUE of rainfed maize. The experiment was a randomized complete block design with split‐plot arrangement using three replications. Treatments consisted two application timings—full dose of N at planting or a split application, with half at sowing and half at V6 stage—and seven N rates of 30, 60, 90, 120, 150, 180, and 210 kg N ha −1 and a control. Results indicated that N fertilization increased straw yield by 34 and 27% and grain yield by 88 and 80% in 2007 and 2008, respectively, over the control. The maximum grain was recorded for 180 kg N ha −1 . Splitting N did not show a significant effect in 2007 but displayed a significant increase in both straw and grain yield (6%) over full N application in 2008. The maximum N uptake ranged between 122 and 139 kg N ha −1 and required 180 kg N ha −1 (except split application in 2007). Splitting of N significantly increased N uptake by 6 and 13% (2007 and 2008, respectively). The maximum NUE was observed between 68 and 70% at 90 kg N ha −1 and there was a general trend of decreasing NUE with increasing N rates. Splitting N increased NUE by 14% (2008). Results of this experiment showed that application of 180 kg N ha −1 in split applications is a successful and sustainable management strategy for maize production in rainfed mountainous ecosystems.
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 11
Claim · model-written summary
N fertilization increased straw yield by 34 and 27% over the control in 2007 and 2008.
- Treatment
- N fertilizatione1
- Outcome
- straw yielde1
- Direction
- increasede1
- Value
- 34 and 27%e1
- Comparator
- the controle1
- Setting
- 2007 and 2008e1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e1“N fertilization increased straw yield by 34 and 27% and grain yield by 88 and 80% in 2007 and 2008, respectively, over the control”
Claim · model-written summary
N fertilization increased grain yield by 88 and 80% over the control in 2007 and 2008.
- Treatment
- N fertilizatione1
- Outcome
- grain yielde1
- Direction
- increasede1
- Value
- 88 and 80%e1
- Comparator
- the controle1
- Setting
- 2007 and 2008e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e1“N fertilization increased straw yield by 34 and 27% and grain yield by 88 and 80% in 2007 and 2008, respectively, over the control”
Claim · model-written summary
The maximum grain was recorded at 180 kg N ha −1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e2“The maximum grain was recorded for 180 kg N ha −1”
Claim · model-written summary
Maximum N uptake ranged between 122 and 139 kg N ha −1 and required 180 kg N ha −1 (except split application in 2007).
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e3“The maximum N uptake ranged between 122 and 139 kg N ha −1 and required 180 kg N ha −1 (except split application in 2007)”
Claim · model-written summary
Splitting of N significantly increased N uptake by 6 and 13% in 2007 and 2008.
- Treatment
- Splitting of Ne4
- Outcome
- N uptakee4
- Direction
- increasede4
- Value
- 6 and 13%e4
- Setting
- 2007 and 2008e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e4“Splitting of N significantly increased N uptake by 6 and 13% (2007 and 2008, respectively)”
Claim · model-written summary
Splitting N did not significantly affect the measured response in 2007.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e6“Splitting N did not show a significant effect in 2007 but displayed a significant increase in both straw and grain yield (6%) over full N application in 2008”
Claim · model-written summary
Splitting N significantly increased straw and grain yield by 6% over full N application in 2008.
- Treatment
- Splitting Ne6
- Outcome
- straw and grain yielde6
- Direction
- increasee6
- Value
- 6%e6
- Comparator
- full N applicatione6
- Setting
- 2008e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e6“Splitting N did not show a significant effect in 2007 but displayed a significant increase in both straw and grain yield (6%) over full N application in 2008”
Claim · model-written summary
Splitting N increased NUE by 14% in 2008.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e7“Splitting N increased NUE by 14% (2008)”
Claim · model-written summary
Maximum NUE was observed between 68 and 70% at 90 kg N ha −1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e1“The maximum NUE was observed between 68 and 70% at 90 kg N ha −1”
Claim · model-written summary
NUE showed a general trend of decreasing with increasing N rates.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e1“there was a general trend of decreasing NUE with increasing N rates”
Claim · model-written summary
Applying 180 kg N ha -1 in split applications is a successful and sustainable management strategy for maize in rainfed mountainous ecosystems.
- Treatment
- application of 180 kg N ha -1 in split applicationse1
- Outcome
- management strategye1
- Qualifier
- successful and sustainablee1
- Setting
- rainfed mountainous ecosystemse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize ( Zea mays L.)”
e1“application of 180 kg N ha -1 in split applications is a successful and sustainable management strategy for maize production in rainfed mountainous ecosystems”
The same questions in other papers
fertilization · yield · Zea mays (maize)Positive and negative results
3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative
- no effect
- positive
- positive
3,904 papers more in this group
See all 3,908 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.