Abstract
Soil acidity and low phosphorus status are the key factors underlying low crop production in Uasin Gishu District. An on farm experiment was conducted during the 2007 and 2008 cropping season to test the effects of agricultural lime (20.8% CaO) and Triple superphosphate (TSP) (12-14% CaO) on some soil properties and two French bean varieties namely: Samantha and Amy. The bean varieties grown in acid soils (pH 5.0) at Kuinet, Uasin Gishu District received 0 and 2 t ha-1 lime and 0, 20 and 40 kg P ha-1 (TSP) and their combinations. Lime significantly increased soil pH from 5.5 to 6.3 and 5.4 to 6.0 for the first and second seasons, respectively at the end of the study period. P alone had no significant effect on soil pH, but increased soil available P between 8.7 and 14.7g/kg-1-. Positive responses of the two crop varieties were observed. This gave GM of Kshs 84,200 and 44,200 respectively. The effects of lime and TSP (With Cao component) were attributed to a favorable positive change in soil pH which increased the availability of soil nutrients through organic matter decomposition or direct release from TSP and availability to the crop and subsequent uptake of the nutrients by the crop. Economic analysis of the crop yields reflected higher returns from both lime and P, particularly in the pods harvested seven weeks after planting. The study demonstrated the superiority of Samantha French bean variety over Amy despite being the most popular within the region. The need for complementary lime and phosphorus application is recommended for acid soil fertility improvement and high crop yields.
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Claims 9
Claim · model-written summary
Lime significantly raised soil pH in both seasons.
Verbatim
t0“FRENCH BEANS”
e0“Lime significantly increased soil pH from 5.5 to 6.3 and 5.4 to 6.0 for the first and second seasons, respectively”
Claim · model-written summary
Phosphorus alone had no significant effect on soil pH.
Not reportedComparator
Verbatim
t0“FRENCH BEANS”
e0“P alone had no significant effect on soil pH”
Claim · model-written summary
Phosphorus alone increased soil available P.
- Taxon
- FRENCH BEANSt0
- Treatment
- P alonee0
- Outcome
- soil available Pe0
- Direction
- increasede0
- Value
- between 8.7 and 14.7g/kg-1-e0
Not reportedComparator
Verbatim
t0“FRENCH BEANS”
e0“P alone had no significant effect on soil pH, but increased soil available P between 8.7 and 14.7g/kg-1-”
Claim · model-written summary
Both French bean varieties responded positively to the treatments.
- Taxon
- French bean
Phaseolus vulgarise0 - Material
- Samantha and Amye0
- Outcome
- responses of the two crop varietiese1
- Direction
- Positivee1
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two French bean varieties namely: Samantha and Amy”
e1“Positive responses of the two crop varieties were observed”
Claim · model-written summary
The treatments yielded gross margins of Kshs 84,200 and 44,200 for the two varieties, respectively.
- Taxon
- French beanPhaseolus vulgarise0
- Material
- Samantha and Amye0
- Outcome
- GMe1
- Value
- Kshs 84,200 and 44,200e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two French bean varieties namely: Samantha and Amy”
e1“This gave GM of Kshs 84,200 and 44,200 respectively”
Claim · model-written summary
The authors attributed lime and TSP effects to raised pH and greater soil nutrient availability and crop uptake.
Verbatim
t0“FRENCH BEANS”
e0“The effects of lime and TSP (With Cao component) were attributed to a favorable positive change in soil pH which increased the availability of soil nutrients through organic matter decomposition or direct release from TSP and availability to the crop and subsequent uptake of the nutrients by the crop”
Claim · model-written summary
Lime and phosphorus produced higher economic returns, particularly for pods picked seven weeks after planting.
- Taxon
- FRENCH BEANSt0
- Organ / stage
- podse0
- Treatment
- both lime and Pe0
- Outcome
- returnse0
- Direction
- highere0
- Qualifier
- seven weeks after plantinge0
Not reportedComparator
Verbatim
t0“FRENCH BEANS”
e0“Economic analysis of the crop yields reflected higher returns from both lime and P, particularly in the pods harvested seven weeks after planting”
Claim · model-written summary
Samantha outperformed Amy.
- Taxon
- French beanPhaseolus vulgarise0
- Material
- Samanthae0
- Outcome
- superioritye0
- Direction
- superioritye0
- Comparator
- Amye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study demonstrated the superiority of Samantha French bean variety over Amy”
Claim · model-written summary
The authors recommended complementary lime and phosphorus for acid soil fertility and high crop yields.
Verbatim
t0“FRENCH BEANS”
e0“The need for complementary lime and phosphorus application is recommended for acid soil fertility improvement and high crop yields”
The same questions in other papers
lime · soil: chemistry · Phaseolus vulgaris (common bean)Results differ
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- no effect
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See all 9 papers →lime · yield · Phaseolus vulgaris (common bean)Results agree
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- positive
- positive
- positive
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See all 39 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.