Abstract
Grain sorghum [ Sorghum bicolor (L.) Moench] is an important food crop of semiarid sub‐Saharan Africa. Crop yields are generally low, partly due to low soil fertility. Research was conducted with farmers to evaluate, soil fertility management practices in sorghum‐based cropping systems including: mucuna [ Mucuna pruriens (L.) DC.] fallow; cowpea [ Vigna unguiculata (L.) Walp.] rotation with sorghum; animal manure application; N and P fertilizer application; and reduced tillage. Four studies, comprised of 142 on‐farm trials, were conducted at three locations over 3 yr in drought‐prone parts of eastern Uganda. Mucuna on average produced 7 Mg ha −1 of aboveground dry matter containing 160 kg N ha −1 across the three locations. Application of 2.5 Mg ha −1 of manure and of 30 kg N plus 10 kg P ha −1 increased grain yield by 1.05 and 1.30 Mg ha −1 , respectively. A combination of 2.5 Mg ha −1 manure with 30 kg N ha −1 increased grain yield by 1.50 Mg ha −1 above the control (1.1 Mg ha −1 ). The increase in sorghum grain yield in response to 30 kg N ha −1 alone, to a mucuna fallow, and to a rotation with cowpea was 1.15, 1.55, and 0.82 Mg ha −1 , respectively. These soil fertility management practices, as well as reduced tillage, were found to be cost effective in increasing sorghum yield in the predominantly smallholder agriculture where inorganic fertilizer was not used much. On‐farm profitability and food security for sorghum production systems can be improved by use of inorganic fertilizers, manure, mucuna fallow, sorghum–cowpea rotation, and reduced tillage.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Mucuna produced 7 Mg ha −1 aboveground dry matter containing 160 kg N ha −1.
MucunaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mucuna on average produced 7 Mg ha −1 of aboveground dry matter containing 160 kg N ha −1 across the three locations.”
Claim · model-written summary
Manure application increased sorghum grain yield by 1.05 Mg ha −1.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2.5 Mg ha −1 of manure and of 30 kg N plus 10 kg P ha −1 increased grain yield by 1.05 and 1.30 Mg ha −1 , respectively.”
t0“Grain sorghum [ Sorghum bicolor (L.) Moench]”
Claim · model-written summary
Nitrogen and phosphorus fertilizer increased sorghum grain yield by 1.30 Mg ha −1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2.5 Mg ha −1 of manure and of 30 kg N plus 10 kg P ha −1 increased grain yield by 1.05 and 1.30 Mg ha −1 , respectively.”
t0“Grain sorghum [ Sorghum bicolor (L.) Moench]”
Claim · model-written summary
Combined manure and nitrogen increased sorghum grain yield by 1.50 Mg ha −1 above control.
- Treatment
- 2.5 Mg ha −1 manure with 30 kg N ha −1e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 1.50 Mg ha −1e0
- Qualifier
- 1.1 Mg ha −1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A combination of 2.5 Mg ha −1 manure with 30 kg N ha −1 increased grain yield by 1.50 Mg ha −1 above the control (1.1 Mg ha −1 ).”
t0“Grain sorghum [ Sorghum bicolor (L.) Moench]”
Claim · model-written summary
Nitrogen alone increased sorghum grain yield by 1.15 Mg ha −1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in sorghum grain yield in response to 30 kg N ha −1 alone, to a mucuna fallow, and to a rotation with cowpea was 1.15, 1.55, and 0.82 Mg ha −1 , respectively.”
Claim · model-written summary
Mucuna fallow increased sorghum grain yield by 1.55 Mg ha −1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in sorghum grain yield in response to 30 kg N ha −1 alone, to a mucuna fallow, and to a rotation with cowpea was 1.15, 1.55, and 0.82 Mg ha −1 , respectively.”
Claim · model-written summary
Cowpea rotation increased sorghum grain yield by 0.82 Mg ha −1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in sorghum grain yield in response to 30 kg N ha −1 alone, to a mucuna fallow, and to a rotation with cowpea was 1.15, 1.55, and 0.82 Mg ha −1 , respectively.”
Claim · model-written summary
The tested fertility practices and reduced tillage were cost effective for increasing sorghum yield.
- Outcome
- cost effective in increasing sorghum yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These soil fertility management practices, as well as reduced tillage, were found to be cost effective in increasing sorghum yield”
Claim · model-written summary
The authors recommend inorganic fertilizer, manure, mucuna fallow, cowpea rotation and reduced tillage to improve profitability and food security.
- Treatment
- inorganic fertilizers, manure, mucuna fallow, sorghum–cowpea rotation, and reduced tillagee0
- Outcome
- On‐farm profitability and food securitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On‐farm profitability and food security for sorghum production systems can be improved by use of inorganic fertilizers, manure, mucuna fallow, sorghum–cowpea rotation, and reduced tillage.”
The same questions in other papers
Vigna unguiculata · yield · SorghumPositive and negative results
39 papers in the same direction as this paper · 7 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
45 papers more in this group
See all 49 papers →rotation · yield · SorghumPositive and negative results
35 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- no effect
- negative
43 papers more in this group
See all 47 papers →nitrogen · yield · SorghumPositive and negative results
263 papers in the same direction as this paper · 22 in the opposite direction · 4 reporting no difference from an alternative
- positive
- negative
- negative
286 papers more in this group
See all 290 papers →fertilization · yield · SorghumPositive and negative results
417 papers in the same direction as this paper · 21 in the opposite direction · 7 reporting no difference from an alternative
- no effect
- no effect
- no effect
442 papers more in this group
See all 446 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.