Abstract
Phosphorus, nitrogen and Striga hermonthica are the major constraints to maize production in the Nyanza Province of Kenya. Field trials were conducted on-farm in Nyanza Province to investigate the effects of phosphate fertilizers and manure on maize yields. The experimental design was a Randomized Complete Block Design (RCBD) with maize as the test crop. The maize was top dressed with calcium ammonium nitrate (CAN) fertilizer at a uniform rate of 30 kg N/ha diammonium phosphate (DAP), Minjingu rock phosphate (MRP) and triple super phosphate (TSP) fertilizers were applied at 60 kg/ha P2O5, farmyard manure (FYM) at 10 t/ha and a non-phosphorus (P) treatment (control) plus lime only. Responses (P ≤ 0.01) from grain yield, total dry matter yield and harvest index to phosphate fertilizers and manure treatments were found. Nutrient uptake and removal by the crop increased (P ≤ 0.01) due to fertilizers and manure application. Phosphate fertilizers and manure application increased (P ≤ 0.01)) available soil P, agronomic phosphorus use efficiency (APUE) and Physiological P use efficiency (PPUE). The results indicate that phosphate fertilizers and manure applications are essential to improve maize yield and nutrient P use efficiency.
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Claims 8
Claim · model-written summary
Grain yield responded to phosphate fertilizer and manure treatments.
- Treatment
- phosphate fertilizers and manure treatmentse0
- Outcome
- grain yielde0
- Comparator
- non-phosphorus (P) treatment (control)e1
Zea maysNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Responses (P ≤ 0.01) from grain yield, total dry matter yield and harvest index to phosphate fertilizers and manure treatments were found.”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Total dry matter yield responded to phosphate fertilizer and manure treatments.
- Treatment
- phosphate fertilizers and manure treatmentse0
- Outcome
- total dry matter yielde0
- Comparator
- non-phosphorus (P) treatment (control)e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Responses (P ≤ 0.01) from grain yield, total dry matter yield and harvest index to phosphate fertilizers and manure treatments were found.”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Harvest index responded to phosphate fertilizer and manure treatments.
- Treatment
- phosphate fertilizers and manure treatmentse0
- Outcome
- harvest indexe0
- Comparator
- non-phosphorus (P) treatment (control)e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Responses (P ≤ 0.01) from grain yield, total dry matter yield and harvest index to phosphate fertilizers and manure treatments were found.”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Fertilizer and manure increased crop nutrient uptake and removal.
- Treatment
- fertilizers and manure applicatione0
- Outcome
- Nutrient uptake and removale0
- Direction
- increasede0
- Comparator
- non-phosphorus (P) treatment (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nutrient uptake and removal by the crop increased (P ≤ 0.01) due to fertilizers and manure application.”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Fertilizers and manure increased available soil phosphorus.
- Treatment
- Phosphate fertilizers and manure applicatione0
- Outcome
- available soil Pe0
- Direction
- increasede0
- Comparator
- non-phosphorus (P) treatment (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphate fertilizers and manure application increased (P ≤ 0.01)) available soil P, agronomic phosphorus use efficiency (APUE) and Physiological P use efficiency (PPUE).”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Fertilizers and manure increased agronomic phosphorus use efficiency.
- Treatment
- Phosphate fertilizers and manure applicatione0
- Outcome
- agronomic phosphorus use efficiency (APUE)e0
- Direction
- increasede0
- Comparator
- non-phosphorus (P) treatment (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphate fertilizers and manure application increased (P ≤ 0.01)) available soil P, agronomic phosphorus use efficiency (APUE) and Physiological P use efficiency (PPUE).”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Fertilizers and manure increased physiological phosphorus use efficiency.
- Treatment
- Phosphate fertilizers and manure applicatione0
- Outcome
- Physiological P use efficiency (PPUE)e0
- Direction
- increasede0
- Comparator
- non-phosphorus (P) treatment (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphate fertilizers and manure application increased (P ≤ 0.01)) available soil P, agronomic phosphorus use efficiency (APUE) and Physiological P use efficiency (PPUE).”
t0“The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya”
e1“a non-phosphorus (P) treatment (control) plus lime only.”
Claim · model-written summary
Authors recommend phosphate fertilizers and manure to improve maize yield and phosphorus efficiency.
- Outcome
- phosphate fertilizers and manure applicationse0
- Qualifier
- improve maize yield and nutrient P use efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicate that phosphate fertilizers and manure applications are essential to improve maize yield and nutrient P use efficiency.”
The same questions in other papers
phosphate · nutrient: efficiency · Zea mays (maize)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
fertilization · nutrient: efficiency · Zea mays (maize)Results differ
173 papers in the same direction as this paper · 12 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
- positive
185 papers more in this group
See all 189 papers →fertilization · nutrient: content · Zea mays (maize)Positive and negative results
1,025 papers in the same direction as this paper · 127 in the opposite direction · 11 reporting no difference from an alternative
- positive
- positive
- negative
1,160 papers more in this group
See all 1,164 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.