Abstract
Abstract Dry beans ( Phaseolus vulgaris L.) are poor nitrogen fixers; therefore, nitrogen fertilizers are recommended for even reasonable production. We studied the effects of six levels of nitrogen (0, 40, 80, 120, 160 and 200 kg/ha) on determinate dry bean yields for 2 years. Seed yields increased significantly in both years with increasing rates of N. Average yields were 2,150, 2,704, 3,048, 3,147, 3,366 and 3,779 kg/ha, respectively, for the six rates of N indicating that higher rates of N might have produced greater seed yields. Yield components (yield/plant, pods/plant, seed/size) also increased with increasing N. Percent crude protein and crude protein yield were closely related to the amount of N applied. Leaf area index, canopy height, canopy width, plant height, and pod length were significantly affected by the amount of N applied; however, addition of N had no appreciable effect on specific leaf area and leaf area ratio. Nitrogen increased dry matter production but had no effect on the distribution of dry matter. At 50 days from planting, dry matter was highest in leaflets (47.7%) followed by stems (28.9%) and was least in flowers (1.2%).
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Claims 11
Claim · model-written summary
Seed yields rose significantly with increasing nitrogen in both years.
Not reportedComparator
Verbatim
e0“Seed yields increased significantly in both years with increasing rates of N”
t0“Dry Beans”
Claim · model-written summary
The six nitrogen rates yielded 2,150 through 3,779 kg/ha, respectively.
- Taxon
- Dry Beanst0
- Treatment
- six rates of Ne0
- Outcome
- Average yieldse0
- Value
- 2,150, 2,704, 3,048, 3,147, 3,366 and 3,779 kg/hae0
Not reportedComparatorDirection
Verbatim
e0“Average yields were 2,150, 2,704, 3,048, 3,147, 3,366 and 3,779 kg/ha, respectively, for the six rates of N”
t0“Dry Beans”
Claim · model-written summary
Yield per plant, pods per plant and seed size increased with nitrogen.
- Taxon
- Dry Beanst0
- Treatment
- increasing Ne0
- Outcome
- yield/plant, pods/plant, seed/sizee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Yield components (yield/plant, pods/plant, seed/size) also increased with increasing N”
t0“Dry Beans”
Claim · model-written summary
Crude protein percentage and yield closely tracked applied nitrogen.
- Taxon
- Dry Beanst0
- Treatment
- amount of N appliede0
- Outcome
- Percent crude protein and crude protein yielde0
Not reportedDirection
Verbatim
e0“Percent crude protein and crude protein yield were closely related to the amount of N applied”
t0“Dry Beans”
Claim · model-written summary
Leaf area index, canopy dimensions, plant height and pod length were significantly affected by nitrogen amount.
Not reportedComparatorDirection
Verbatim
e0“Leaf area index, canopy height, canopy width, plant height, and pod length were significantly affected by the amount of N applied”
t0“Dry Beans”
Claim · model-written summary
Specific leaf area and leaf area ratio were little affected by nitrogen addition.
- Taxon
- Dry Beanst0
- Treatment
- addition of Ne0
- Outcome
- specific leaf area and leaf area ratioe0
- Direction
- no appreciable effecte0
Not reportedComparator
Verbatim
e0“addition of N had no appreciable effect on specific leaf area and leaf area ratio”
t0“Dry Beans”
Claim · model-written summary
Nitrogen increased dry matter production.
Not reportedComparator
Verbatim
e0“Nitrogen increased dry matter production”
t0“Dry Beans”
Claim · model-written summary
Nitrogen did not affect dry matter distribution.
Not reportedComparator
Verbatim
e0“Nitrogen increased dry matter production but had no effect on the distribution of dry matter”
t0“Dry Beans”
Claim · model-written summary
At day 50, leaflets held the most dry matter at 47.7%.
Verbatim
t0“Dry Beans”
e0“At 50 days from planting, dry matter was highest in leaflets (47.7%)”
Claim · model-written summary
At day 50, stems held 28.9% of dry matter.
Not reportedDirection
Verbatim
t0“Dry Beans”
e0“followed by stems (28.9%)”
Claim · model-written summary
At day 50, flowers held the least dry matter at 1.2%.
Verbatim
t0“Dry Beans”
e0“was least in flowers (1.2%)”
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