Abstract
SUMMARY Phosphorus (P) is one of the main limiting nutrients in the semi-arid regions where pearl millet is grown; its deficiency leads to poor seedling establishment and eventually poor crop yield. Experiments were carried out in pots and field-like conditions to evaluate the effect of seed priming and seed coating with P on the shoot biomass at two and four weeks after sowing (WAS), and on the panicle and stover yield at maturity of three hybrid varieties of pearl millet in low P Alfisol. Overall, seed priming did not increase shoot biomass at two and four WAS. In pots, seed coating at a rate of approximately 400 g P ha −1 increased vegetative biomass over 400% at early stages, and panicle yield by about 50%, over the non-coated treatment, with genotypic variation in the magnitude of the response. In field-like conditions, seed coating restored stover biomass to 85–100% of that in the non-limiting P treatment, whereas the panicle yield remained 25–35% lower than in the non-limiting P treatment, but still 45–65% higher than the non-coated treatment. P deficiency delayed the time to flowering by 20–24 days compared to the non-limiting P treatment, but plants in the seed coating treatment reduced that gap by 10–14 days. Seed P coating treatment appears a valid option to promote pearl millet seedling establishment and then to boost yield under low soil P conditions. The maintenance of an effect of seed coating on panicle yield in pots suggests a positive early effect on developmental processes before panicle initiation.
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Claims 10
Claim · model-written summary
Seed priming did not increase shoot biomass at two and four weeks after sowing in pearl millet grown in low-P Alfisol.
- Taxon
- pearl millet
Cenchrus americanuse2 - Treatment
- seed priminge1
- Outcome
- shoot biomasse1
- Direction
- did not increasee1
- Qualifier
- at two and four WASe1
- Setting
- low P Alfisole2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Overall, seed priming did not increase shoot biomass at two and four WAS”
e2“three hybrid varieties of pearl millet in low P Alfisol”
Claim · model-written summary
In pots, P seed coating at about 400 g P ha −1 increased vegetative biomass by over 400% at early stages relative to non-coated seed, with genotypic variation in the response.
- Taxon
- pearl milletCenchrus americanuse2
- Material
- three hybrid varietiese2
- Organ / stage
- early stagese3
- Treatment
- seed coating at a rate of approximately 400 g P ha −1e3
- Outcome
- vegetative biomasse3
- Direction
- increasede3
- Value
- over 400%e3
- Qualifier
- with genotypic variation in the magnitude of the responsee3
- Comparator
- non-coated treatmente3
- Setting
- potse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e3“In pots, seed coating at a rate of approximately 400 g P ha −1 increased vegetative biomass over 400% at early stages, and panicle yield by about 50%, over the non-coated treatment, with genotypic variation in the magnitude of the response”
Claim · model-written summary
In pots, P seed coating at about 400 g P ha −1 increased panicle yield by about 50% relative to non-coated seed.
- Taxon
- pearl milletCenchrus americanuse2
- Material
- three hybrid varietiese2
- Treatment
- seed coating at a rate of approximately 400 g P ha −1e3
- Outcome
- panicle yielde3
- Direction
- increasede3
- Value
- about 50%e3
- Comparator
- non-coated treatmente3
- Setting
- potse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e3“In pots, seed coating at a rate of approximately 400 g P ha −1 increased vegetative biomass over 400% at early stages, and panicle yield by about 50%, over the non-coated treatment, with genotypic variation in the magnitude of the response”
Claim · model-written summary
In field-like conditions, seed coating restored stover biomass of pearl millet to 85–100% of that under non-limiting P.
- Taxon
- pearl milletCenchrus americanuse2
- Treatment
- seed coatinge4
- Outcome
- stover biomasse4
- Direction
- restorede4
- Value
- 85–100%e4
- Comparator
- non-limiting P treatmente4
- Setting
- field-like conditionse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e4“In field-like conditions, seed coating restored stover biomass to 85–100% of that in the non-limiting P treatment”
Claim · model-written summary
In field-like conditions, panicle yield of pearl millet with seed coating remained 25–35% lower than under non-limiting P.
- Taxon
- pearl milletCenchrus americanuse2
- Treatment
- seed coatinge4
- Outcome
- panicle yielde5
- Direction
- lowere5
- Value
- 25–35%e5
- Comparator
- non-limiting P treatmente5
- Setting
- field-like conditionse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e4“In field-like conditions, seed coating restored stover biomass to 85–100% of that in the non-limiting P treatment”
e5“whereas the panicle yield remained 25–35% lower than in the non-limiting P treatment, but still 45–65% higher than the non-coated treatment”
Claim · model-written summary
In field-like conditions, panicle yield with seed coating was 45–65% higher than with non-coated seed.
- Taxon
- pearl milletCenchrus americanuse2
- Treatment
- seed coatinge4
- Outcome
- panicle yielde5
- Direction
- highere5
- Value
- 45–65%e5
- Comparator
- non-coated treatmente5
- Setting
- field-like conditionse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e4“In field-like conditions, seed coating restored stover biomass to 85–100% of that in the non-limiting P treatment”
e5“whereas the panicle yield remained 25–35% lower than in the non-limiting P treatment, but still 45–65% higher than the non-coated treatment”
Claim · model-written summary
P deficiency delayed flowering of pearl millet by 20–24 days compared with non-limiting P.
- Taxon
- pearl milletCenchrus americanuse2
- Treatment
- P deficiencye6
- Outcome
- time to floweringe6
- Direction
- delayede6
- Value
- 20–24 dayse6
- Comparator
- non-limiting P treatmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e6“P deficiency delayed the time to flowering by 20–24 days compared to the non-limiting P treatment”
Claim · model-written summary
Seed coating reduced the flowering-time gap caused by P deficiency by 10–14 days.
- Taxon
- pearl milletCenchrus americanuse2
- Treatment
- seed coatinge7
- Outcome
- that gape7
- Direction
- reducede7
- Value
- 10–14 dayse7
- Comparator
- non-limiting P treatmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e6“P deficiency delayed the time to flowering by 20–24 days compared to the non-limiting P treatment”
e7“but plants in the seed coating treatment reduced that gap by 10–14 days”
Claim · model-written summary
Seed P coating appears to be a valid option to promote pearl millet seedling establishment and boost yield under low soil P.
- Taxon
- pearl milletCenchrus americanuse0
- Outcome
- seedling establishmente0
- Setting
- low soil P conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed P coating treatment appears a valid option to promote pearl millet seedling establishment and then to boost yield under low soil P conditions”
Claim · model-written summary
Seed coating may have a positive early effect on developmental processes of pearl millet before panicle initiation.
- Taxon
- pearl milletCenchrus americanuse2
- Treatment
- seed coatinge6
- Outcome
- developmental processes before panicle initiatione6
- Qualifier
- suggests a positive early effecte6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“three hybrid varieties of pearl millet in low P Alfisol”
e6“The maintenance of an effect of seed coating on panicle yield in pots suggests a positive early effect on developmental processes before panicle initiation”
The same questions in other papers
seed treatment · yield · Cenchrus americanus (pearl millet)Results differ
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19 papers in the same direction as this paper · 1 in the opposite direction
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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.