Abstract
Improving crop productivity requires integrated management of soil fertility. This study aimed to assess the effects of tillage and the cropping system with soil amendment on the productivity of sorghum and cowpea. The experimental design was a completely randomized block with the treatments arranged in a split plot and three repetitions. Four tillage methods were allocated to the main plots and four cropping systems combined with four types of soil amendment were allocated to the sub plots. The results showed that ploughing and tied-ridging generated higher grain yields of sorghum than minimum tillage and manual zaï. The two cropping systems 1) 2 rows of sorghum alternated with 2 rows of semi-erect habit cowpea and 2) 1 or 2 row(s) of sorghum alternated with 1 or 2 row(s) of creeping habit cowpea in interaction with soil amendments generated higher grain yields for sorghum ranging from 895 to 1097 kg ha-1 and stover yields ranging from 1913 to 2370 kg ha-1 in the third year of study. Minimum tillage and ploughing proved to be more efficient in improving cowpea grain yields in the cropping system of 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendment. These results show that tillage and crop association with soil amendments are likely to optimize agricultural productivity.
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Claims 6
Claim · model-written summary
Ploughing gave higher sorghum grain yield than minimum tillage and manual zaï.
- Treatment
- ploughinge0
- Outcome
- grain yieldse0
- Direction
- highere0
- Comparator
- minimum tillage and manual zaïe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“ploughing and tied-ridging generated higher grain yields of sorghum than minimum tillage and manual zaï”
e1“ploughing and tied-ridging generated higher grain yields of sorghum than minimum tillage and manual zaï”
Claim · model-written summary
Tied-ridging gave higher sorghum grain yield than minimum tillage and manual zaï.
- Treatment
- tied-ridginge0
- Outcome
- grain yieldse0
- Direction
- highere0
- Comparator
- minimum tillage and manual zaïe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“ploughing and tied-ridging generated higher grain yields of sorghum than minimum tillage and manual zaï”
e1“ploughing and tied-ridging generated higher grain yields of sorghum than minimum tillage and manual zaï”
Claim · model-written summary
Alternating two sorghum rows with two semi-erect cowpea rows with amendments gave higher sorghum grain yield of 895 to 1097 kg ha-1.
- Treatment
- 2 rows of sorghum alternated with 2 rows of semi-erect habit cowpeae0
- Outcome
- grain yieldse0
- Direction
- highere0
- Value
- 895 to 1097 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“2 rows of sorghum alternated with 2 rows of semi-erect habit cowpea and 2) 1 or 2 row(s) of sorghum alternated with 1 or 2 row(s) of creeping habit cowpea in interaction with soil amendments generated higher grain yields for sorghum ranging from 895 to 1097 kg ha-1”
e1“2 rows of sorghum alternated with 2 rows of semi-erect habit cowpea and 2) 1 or 2 row(s) of sorghum alternated with 1 or 2 row(s) of creeping habit cowpea in interaction with soil amendments generated higher grain yields for sorghum ranging from 895 to 1097 kg ha-1”
Claim · model-written summary
The tested intercropping systems with amendments gave sorghum stover yields of 1913 to 2370 kg ha-1 in year three.
- Treatment
- cropping system with soil amendmentt0
- Outcome
- stover yieldse0
- Value
- 1913 to 2370 kg ha-1e0
- Qualifier
- third year of studye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“stover yields ranging from 1913 to 2370 kg ha-1 in the third year of study”
e1“stover yields ranging from 1913 to 2370 kg ha-1 in the third year of study”
t0“Sorghum and cowpea productivity as influenced by tillage, cropping system with soil amendment”
Claim · model-written summary
Minimum tillage improved cowpea grain yield in the specified sorghum-cowpea system with amendment.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- Minimum tillagee0
- Outcome
- grain yieldse0
- Direction
- improvinge0
- Qualifier
- 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Minimum tillage and ploughing proved to be more efficient in improving cowpea grain yields in the cropping system of 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendment”
e1“Minimum tillage and ploughing proved to be more efficient in improving cowpea grain yields in the cropping system of 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendment”
Claim · model-written summary
Ploughing improved cowpea grain yield in the specified sorghum-cowpea system with amendment.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- ploughinge0
- Outcome
- grain yieldse0
- Direction
- improvinge0
- Qualifier
- 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Minimum tillage and ploughing proved to be more efficient in improving cowpea grain yields in the cropping system of 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendment”
e1“Minimum tillage and ploughing proved to be more efficient in improving cowpea grain yields in the cropping system of 1 row of sorghum alternated with 1 row of creeping cowpea with soil amendment”
The same questions in other papers
Vigna unguiculata · yield · SorghumPositive and negative results
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- negative
- negative
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See all 49 papers →tillage · yield · Vigna unguiculata (cowpea)Results differ
26 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
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See all 35 papers →tillage · yield · SorghumResults differ
101 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative
- negative
- negative
- negative
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See all 123 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.