Abstract
Summary The performance of two contrasting pearl millet ( Pennisetum glaucum ) genotypes was compared following five planting dates under rainfed conditions in deep sandy soils at Bengou, Niger in 1986 and 1987. The early and partially photo-sensitive cultivar HKB yielded more grain than the late and photo-sensitive cultivar Somno when planted with the first two seasonal rains. But after delayed planting, the crop growth rate and harvest index of cultivar HKB were reduced, leading to smaller grain yields even though the growth period, rainfall, radiation and temperature were similar at all the planting dates. In contrast, cultivar Somno maintained a small but stable harvest index over various planting dates, so that although its growth period and crop growth rate were reduced by delayed planting, the reduction in grain yield was less. Since agronomic manipulation, such as increased plant density and fertilizer application, can be used to increase crop growth rate, photo-sensitive millet genotypes such as cultivar Somno could be used for late July plantings in the Sudano-Sahelian zone.
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Claims 8
Claim · model-written summary
HKB yielded more grain than Somno with the first two rains.
- Taxon
- Pearl Millet
Cenchrus americanust0 - Material
- HKBe0
- Outcome
- graine0
- Direction
- moree0
- Qualifier
- first two seasonal rainse0
- Comparator
- Somnoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The early and partially photo-sensitive cultivar HKB yielded more grain than the late and photo-sensitive cultivar Somno when planted with the first two seasonal rains.”
t0“Pearl Millet”
Claim · model-written summary
Delayed planting reduced HKB crop growth rate.
- Taxon
- Pearl MilletCenchrus americanust0
- Material
- HKBe0
- Treatment
- delayed plantinge0
- Outcome
- crop growth ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But after delayed planting, the crop growth rate and harvest index of cultivar HKB were reduced, leading to smaller grain yields”
t0“Pearl Millet”
Claim · model-written summary
Delayed planting reduced HKB harvest index.
- Taxon
- Pearl MilletCenchrus americanust0
- Material
- HKBe0
- Treatment
- delayed plantinge0
- Outcome
- harvest indexe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But after delayed planting, the crop growth rate and harvest index of cultivar HKB were reduced, leading to smaller grain yields”
t0“Pearl Millet”
Claim · model-written summary
Delayed planting gave HKB smaller grain yields.
- Taxon
- Pearl MilletCenchrus americanust0
- Material
- HKBe0
- Treatment
- delayed plantinge0
- Outcome
- grain yieldse0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But after delayed planting, the crop growth rate and harvest index of cultivar HKB were reduced, leading to smaller grain yields”
t0“Pearl Millet”
Claim · model-written summary
Somno maintained a small stable harvest index across planting dates.
- Taxon
- Pearl MilletCenchrus americanust0
- Material
- Somnoe0
- Outcome
- harvest indexe0
- Direction
- stablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultivar Somno maintained a small but stable harvest index over various planting dates”
t0“Pearl Millet”
Claim · model-written summary
Delayed planting reduced Somno growth period and crop growth rate.
- Taxon
- Pearl MilletCenchrus americanust0
- Material
- Somnoe1
- Treatment
- delayed plantinge0
- Outcome
- growth period and crop growth ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its growth period and crop growth rate were reduced by delayed planting”
t0“Pearl Millet”
t1“Pearl Millet”
e1“cultivar Somno maintained a small but stable harvest index over various planting dates”
Claim · model-written summary
Somno grain yield declined less after delayed planting.
- Taxon
- Pearl MilletCenchrus americanust0
- Material
- Somnoe1
- Treatment
- delayed plantinge2
- Outcome
- grain yielde0
- Direction
- lesse0
- Comparator
- HKBe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction in grain yield was less”
t0“Pearl Millet”
t1“Pearl Millet”
e1“cultivar Somno maintained a small but stable harvest index over various planting dates”
e2“its growth period and crop growth rate were reduced by delayed planting”
e3“But after delayed planting, the crop growth rate and harvest index of cultivar HKB were reduced, leading to smaller grain yields”
Claim · model-written summary
Authors propose photo-sensitive Somno for late July planting.
Verbatim
e0“photo-sensitive millet genotypes such as cultivar Somno could be used for late July plantings in the Sudano-Sahelian zone.”
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See all 21 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.