Abstract
Asynchrony between nitrogen (N) released by organic materials and N demand by the crop leads to low N use efficiency. Optimizing the time of application could increase the N recovery. A field experiment was designed to determine the effects of time of application of Gliricidia sepium prunings and of the addition of small doses of inorganic N fertilizer on N recovery and yield of maize. Six split applications of gliricidia prunings (in October, December and February) were compared. The prunings were incorporated into the soil while fresh. The application in October was done four weeks before planting the maize. Higher N uptake and maize yields were obtained when gliricidia prunings were applied in October than when applied in December and February. The corresponding substitution values were 0.66, 0.32 and 0.20. Split applications of prunings prolonged mineral N availability in the soil until March but did not increase N uptake and maize grain yield compared to a sole application in October. Combinations of gliricidia prunings and inorganic fertilizer increased N uptake and maize yield over prunings alone but the effect was only additive. We concluded that application of gliricidia prunings in October was more efficient than application in December and February.
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 9
Claim · model-written summary
October gliricidia pruning application gave higher maize N uptake than December and February application.
- Treatment
- gliricidia prunings were applied in Octobere0
- Outcome
- N uptakee0
- Direction
- Highere0
- Comparator
- applied in December and Februarye0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher N uptake and maize yields were obtained when gliricidia prunings were applied in October than when applied in December and February.”
Claim · model-written summary
October gliricidia pruning application gave higher maize yields than December and February application.
- Treatment
- gliricidia prunings were applied in Octobere0
- Outcome
- maize yieldse0
- Direction
- Highere0
- Comparator
- applied in December and Februarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher N uptake and maize yields were obtained when gliricidia prunings were applied in October than when applied in December and February.”
Claim · model-written summary
Substitution values for October, December and February were 0.66, 0.32 and 0.20 respectively.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The corresponding substitution values were 0.66, 0.32 and 0.20.”
t0“MAIZE”
Claim · model-written summary
Split pruning applications prolonged soil mineral N availability until March.
- Treatment
- Split applications of pruningse0
- Outcome
- mineral N availability in the soile0
- Direction
- prolongede0
- Qualifier
- until Marche0
- Comparator
- a sole application in Octobere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split applications of prunings prolonged mineral N availability in the soil until March but did not increase N uptake and maize grain yield compared to a sole application in October.”
t0“MAIZE”
Claim · model-written summary
Split pruning applications did not increase maize N uptake versus a sole October application.
- Treatment
- Split applications of pruningse0
- Outcome
- N uptakee0
- Direction
- did not increasee0
- Comparator
- a sole application in Octobere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split applications of prunings prolonged mineral N availability in the soil until March but did not increase N uptake and maize grain yield compared to a sole application in October.”
t0“MAIZE”
Claim · model-written summary
Split pruning applications did not increase maize grain yield versus a sole October application.
- Treatment
- Split applications of pruningse0
- Outcome
- maize grain yielde0
- Direction
- did not increasee0
- Comparator
- a sole application in Octobere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split applications of prunings prolonged mineral N availability in the soil until March but did not increase N uptake and maize grain yield compared to a sole application in October.”
Claim · model-written summary
Combining gliricidia prunings and inorganic fertilizer increased maize N uptake over prunings alone, with only an additive effect.
- Treatment
- Combinations of gliricidia prunings and inorganic fertilizere0
- Outcome
- N uptakee0
- Direction
- increasede0
- Qualifier
- only additivee0
- Comparator
- prunings alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combinations of gliricidia prunings and inorganic fertilizer increased N uptake and maize yield over prunings alone but the effect was only additive.”
t0“MAIZE”
Claim · model-written summary
Combining gliricidia prunings and inorganic fertilizer increased maize yield over prunings alone, with only an additive effect.
- Treatment
- Combinations of gliricidia prunings and inorganic fertilizere0
- Outcome
- maize yielde0
- Direction
- increasede0
- Qualifier
- only additivee0
- Comparator
- prunings alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combinations of gliricidia prunings and inorganic fertilizer increased N uptake and maize yield over prunings alone but the effect was only additive.”
t0“MAIZE”
Claim · model-written summary
The authors concluded that October pruning application was more efficient than December or February application.
- Outcome
- application of gliricidia prunings in Octobere0
- Direction
- more efficiente0
- Comparator
- application in December and Februarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We concluded that application of gliricidia prunings in October was more efficient than application in December and February.”
t0“MAIZE”
The same questions in other papers
pruning · nutrient: content · Zea mays (maize)Positive and negative results
10 papers in the same direction as this paper · 7 in the opposite direction
- negative
- positive
- negative
14 papers more in this group
See all 18 papers →pruning · yield · Zea mays (maize)Positive and negative results
85 papers in the same direction as this paper · 86 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- negative
170 papers more in this group
See all 174 papers →fertilization · nutrient: content · Zea mays (maize)Positive and negative results
1,025 papers in the same direction as this paper · 127 in the opposite direction · 11 reporting no difference from an alternative
- negative
- positive
- positive
1,160 papers more in this group
See all 1,164 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
- positive
- 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.