Abstract
Forage and nitrogen content responses of common buffelgrass (Cenchrus ciliaris L.) to nitrogen (N) and phosphorus (P) fertilization were evaluated for two successive years in the UAE. Treatments consisted of five rates of N (0, 250, 500, 750 and 1000 kg ha -1 yr -1 ) and four rates of P (0, 200, 400 and 600 kg ha -1 yr -1 ), applied via weekly fertigation. All N fertilizer treatments resulted in significant increase in forage dry yield, relative to control. However, no yield increase was observed from N treatments greater than 250 kg N ha -1 . There were neither significant yield responses to P fertilization treatments over the two years of the study, nor significant N-P treatment interactions for yield. Forage N concentration progressively increased with increasing levels of N fertilizer, reaching maximum levels under the 1000 kg ha -1 N treatment. A seasonal pattern of forage N concentration occurred, being higher in winter and lower in summer.
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Claims 6
Claim · model-written summary
All nitrogen fertilizer treatments significantly raised forage dry yield relative to control.
Verbatim
e0“All N fertilizer treatments resulted in significant increase in forage dry yield, relative to control.”
t0“common buffelgrass”
Claim · model-written summary
Nitrogen above 250 kg N ha -1 produced no additional yield increase.
- Taxon
- Cenchrus ciliaris
Cenchrus ciliarist0 - Treatment
- N treatments greater than 250 kg N ha -1e0
- Outcome
- yielde0
- Direction
- no yield increasee0
- Comparator
- 250 kg N ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no yield increase was observed from N treatments greater than 250 kg N ha -1”
t0“Cenchrus ciliaris”
Claim · model-written summary
Phosphorus fertilization produced no significant yield response over two years.
- Taxon
- Cenchrus ciliarisCenchrus ciliarist0
- Treatment
- P fertilization treatmentse0
- Outcome
- yield responsese0
- Qualifier
- over the two years of the studye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were neither significant yield responses to P fertilization treatments over the two years of the study”
t0“Cenchrus ciliaris”
Claim · model-written summary
The N-P interaction for yield was not significant.
- Taxon
- Cenchrus ciliarisCenchrus ciliarist0
- Treatment
- N-P treatment interactionse0
- Outcome
- yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nor significant N-P treatment interactions for yield.”
t0“Cenchrus ciliaris”
Claim · model-written summary
Forage N concentration rose with increasing N fertilizer and peaked at 1000 kg ha -1 N.
- Taxon
- Cenchrus ciliarisCenchrus ciliarist0
- Treatment
- 1000 kg ha -1 N treatmente0
- Outcome
- Forage N concentratione0
- Direction
- progressively increasede0
- Comparator
- increasing levels of N fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage N concentration progressively increased with increasing levels of N fertilizer, reaching maximum levels under the 1000 kg ha -1 N treatment.”
t0“Cenchrus ciliaris”
Claim · model-written summary
Forage N concentration was higher in winter and lower in summer.
- Taxon
- Cenchrus ciliarisCenchrus ciliarist0
- Outcome
- forage N concentratione0
- Direction
- highere0
- Comparator
- summere0
- Setting
- wintere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A seasonal pattern of forage N concentration occurred, being higher in winter and lower in summer.”
t0“Cenchrus ciliaris”
The same questions in other papers
nitrogen · yield · Cenchrus ciliaris (buffelgrass)Positive and negative results
4 reporting no difference from an alternative
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →fertilization · yield · Cenchrus ciliaris (buffelgrass)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.