Abstract
SUMMARY In the Sahelian zone of Niger, there is a need to develop guidelines for integrated nutrient management, which relies on the potential nutrient sources of manure, pearl millet residue and mineral fertilizers. A fully factorial on-station experiment was conducted during the 1994 and 1995 rainy seasons at Sadoré, Niger, combining application of: (i) broadcast millet residue (300, 900 and 2700 kg ha −1 ), (ii) broadcast cattle manure (300, 900 and 2700 kg ha −1 ) and (iii) mineral fertilizer (unfertilized control, 15 kg N ha −1 + 4.4 kg P ha −1 and 45 kg N ha −1 + 13.1 kg P ha −1 ). Manure and fertilizer increased millet yields in both years whereas residue was effective in 1995 only. The effect of manure and residue were additive, as was the effect of manure and fertilizer but only up to 50 kg N ha −1 . However in 1995, the response to fertilizer was approximately doubled in the presence of 900 or 2700 kg residue ha −1 compared to fertilizer with 300 kg ha −1 residue, indicating a strong synergistic effect. This synergistic effect was reflected in the partial factor productivity of nitrogen and phosphorous in both years. Two treatment combinations stand out as particularly relevant based on yield, partial factor productivity and nutrient balance criteria: 2700 kg manure ha −1 combined with (i) 300 kg residue and no fertilizer (95% grain yield increase); (ii) 900 kg residue ha −1 and 15 kg N + 4 kg P ha −1 (132% grain yield increase). There is a need for similar, long-term experiments to confirm the present results.
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Claims 10
Claim · model-written summary
Cattle manure increased pearl millet yields in both years.
- Taxon
- pearl millet
Cenchrus americanust0 - Treatment
- manuree0
- Outcome
- millet yieldse0
- Direction
- increasede0
- Qualifier
- in both yearse0
- Setting
- Sadoré, Nigere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e0“Manure and fertilizer increased millet yields in both years”
e2“A fully factorial on-station experiment was conducted during the 1994 and 1995 rainy seasons at Sadoré, Niger”
Claim · model-written summary
Mineral fertilizer increased pearl millet yields in both years relative to the unfertilized control.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- mineral fertilizere2
- Outcome
- millet yieldse0
- Direction
- increasede0
- Qualifier
- in both yearse0
- Comparator
- unfertilized controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e0“Manure and fertilizer increased millet yields in both years”
e2“(iii) mineral fertilizer (unfertilized control”
Claim · model-written summary
Millet residue increased pearl millet yields in 1995 only.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- millet residuee7
- Outcome
- millet yieldse0
- Direction
- increaseinferrede6
- Qualifier
- in 1995 onlye6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e0“Manure and fertilizer increased millet yields in both years”
e6“whereas residue was effective in 1995 only”
e7“(i) broadcast millet residue”
Claim · model-written summary
The effect of manure and residue on pearl millet was additive.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- effect of manure and residuee6
- Qualifier
- additivee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e6“The effect of manure and residue were additive”
Claim · model-written summary
The effect of manure and mineral fertilizer on pearl millet was additive only up to 50 kg N ha −1.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- effect of manure and fertilizere7
- Qualifier
- only up to 50 kg N ha −1e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e7“as was the effect of manure and fertilizer but only up to 50 kg N ha −1”
Claim · model-written summary
In 1995 the response to fertilizer was approximately doubled in the presence of 900 or 2700 kg residue ha −1 compared with fertilizer with 300 kg ha −1 residue.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- 900 or 2700 kg residue ha −1e1
- Outcome
- response to fertilizere1
- Direction
- approximately doublede1
- Qualifier
- in 1995e1
- Comparator
- fertilizer with 300 kg ha −1 residuee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e1“However in 1995, the response to fertilizer was approximately doubled in the presence of 900 or 2700 kg residue ha −1 compared to fertilizer with 300 kg ha −1 residue”
Claim · model-written summary
Residue and fertilizer had a strong synergistic effect on pearl millet response.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- residuee1
- Outcome
- synergistic effecte2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e2“indicating a strong synergistic effect”
e1“However in 1995, the response to fertilizer was approximately doubled in the presence of 900 or 2700 kg residue ha −1 compared to fertilizer with 300 kg ha −1 residue”
Claim · model-written summary
The synergistic effect was reflected in partial factor productivity of nitrogen and phosphorous in both years.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- partial factor productivity of nitrogen and phosphorouse3
- Qualifier
- in both yearse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e3“This synergistic effect was reflected in the partial factor productivity of nitrogen and phosphorous in both years”
Claim · model-written summary
Combining 2700 kg manure ha −1 with 300 kg residue and no fertilizer increased grain yield by 95%.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- 2700 kg manure ha −1 combined with (i) 300 kg residue and no fertilizere4
- Outcome
- grain yielde4
- Direction
- increasee4
- Value
- 95%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e4“2700 kg manure ha −1 combined with (i) 300 kg residue and no fertilizer (95% grain yield increase)”
Claim · model-written summary
Combining 900 kg residue ha −1 with 15 kg N + 4 kg P ha −1 increased grain yield by 132%.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- 900 kg residue ha −1 and 15 kg N + 4 kg P ha −1e5
- Outcome
- grain yielde5
- Direction
- increasee5
- Value
- 132%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PEARL MILLET”
e5“(ii) 900 kg residue ha −1 and 15 kg N + 4 kg P ha −1 (132% grain yield increase)”
The same questions in other papers
nitrogen · yield · Cenchrus americanus (pearl millet)Positive and negative results
143 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
146 papers more in this group
See all 150 papers →fertilization · yield · Cenchrus americanus (pearl millet)Positive and negative results
248 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- no effect
255 papers more in this group
See all 259 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.