Abstract
Legume production under infertile sandy soil may be limited by low nitrogen (N) and phosphorus (P) availability in the soil. A study was conducted to assess the effects of N and P on growth, yield, and root nodules of mung bean under sandy soil conditions. Two pot experiments were conducted under a greenhouse environment and were laid out in a completely randomized design (CRD) with five replications. Experiment 1 consisted of two types of soils (sandy and loamy sand) and two P application rates at 0 and 13 mg P kg-1. Experiment 2 consisted of 10 fertilizer treatments that included two N treatments of 0 and 53 mg N kg-1 in combination with four P treatments of 0, 17, 34, 68 mg P kg-1, P only at 17 mg P kg-1, and a cattle manure that was applied at a rate of 5 t ha-1 which was equivalent to 52:07:56 (N:P:K mg kg-1). The results showed that crop growth and root nodules improved with P application in the loamy sand soil (containing medium P), but not in the sandy soil (containing low P). Nitrogen application also improved the crop growth and grain yield significantly in loamy sand soil. However, N application suppressed root nodule formation, an effect that was significant for the N2 fixation of the crop. Increase in the P rate did not alleviate the inhibitory effect of N on nodule formation. Since N and P fertilizer had opposite effects on root nodules, interactions between N and P need to be further investigated when considering the economic benefits of using these fertilizers.
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Claims 7
Claim · model-written summary
Phosphorus improved mung bean growth in loamy sand soil.
- Taxon
- mung bean
.jpg?width=60)
Vigna radiatat0 - Treatment
- P applicatione0
- Outcome
- crop growthe0
- Direction
- improvede0
- Setting
- loamy sand soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“crop growth and root nodules improved with P application in the loamy sand soil (containing medium P)”
t0“mung bean”
Claim · model-written summary
Phosphorus improved mung bean root nodules in loamy sand soil.
- Taxon
- mung beanVigna radiatat0
- Treatment
- P applicatione0
- Outcome
- root nodulese0
- Direction
- improvede0
- Setting
- loamy sand soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop growth and root nodules improved with P application in the loamy sand soil (containing medium P)”
t0“mung bean”
Claim · model-written summary
Phosphorus did not improve growth or nodules in sandy soil.
- Taxon
- mung beanVigna radiatat0
- Treatment
- P applicatione0
- Outcome
- growth and root nodulese0
- Setting
- sandy soile0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that crop growth and root nodules improved with P application in the loamy sand soil (containing medium P), but not in the sandy soil (containing low P).”
t0“mung bean”
Claim · model-written summary
Nitrogen significantly improved mung bean growth in loamy sand soil.
- Taxon
- mung beanVigna radiatat0
- Treatment
- Nitrogen applicatione0
- Outcome
- crop growthe0
- Direction
- improvede0
- Setting
- loamy sand soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen application also improved the crop growth and grain yield significantly in loamy sand soil.”
t0“mung bean”
Claim · model-written summary
Nitrogen significantly improved mung bean grain yield in loamy sand soil.
- Taxon
- mung beanVigna radiatat0
- Treatment
- Nitrogen applicatione0
- Outcome
- grain yielde0
- Direction
- improvede0
- Setting
- loamy sand soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen application also improved the crop growth and grain yield significantly in loamy sand soil.”
t0“mung bean”
Claim · model-written summary
Nitrogen suppressed mung bean root nodule formation.
- Taxon
- mung beanVigna radiatat0
- Treatment
- N applicatione0
- Outcome
- root nodule formatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N application suppressed root nodule formation”
t0“mung bean”
Claim · model-written summary
Higher phosphorus rate did not alleviate nitrogen inhibition of nodulation.
- Taxon
- mung beanVigna radiatat0
- Treatment
- Increase in the P ratee0
- Outcome
- inhibitory effect of N on nodule formatione0
- Direction
- did not alleviatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in the P rate did not alleviate the inhibitory effect of N on nodule formation.”
t0“mung bean”
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