Claim · model-written summary
Including cowpea in the rotation raised maize grain yield by 78 over the 0 kg N fallow.
- Treatment
- cowpeae1
- Outcome
- grain yielde1
- Direction
- increasee1
- Value
- 78e1
- Comparator
- fallow system with 0 kg N ha −1e1
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The mean increase in grain yield as a result of including cowpea [ Vigna unguiculata (L.) Walp.], pigeonpea [ Cajanus cajan (L.) Millsp.], sunn hemp ( Crotalaria juncea L.), double‐cropped soybean, and double‐cropped grain sorghum [ Sorghum bicolor (L.) Moench] in the rotation over the fallow system with 0 kg N ha −1 was 78, 91, 66, 72, and 12%, respectively”
t0“Response of Maize”
Title
Response of Maize to Cover Crops, Fertilizer Nitrogen Rates, and Economic Return
George Y. Mahama; P. V. Vara Prasad; Kraig L. Roozeboom; et al. Agronomy Journal 2015. doi:10.2134/agronj15.0136
Other claims from this paper (11)
- Intervention effect Maize grain yield in all cover crop systems and double-cropped soybean was similar to maize in fallow with 45 kg N/ha.
- Intervention effect Including pigeonpea in the rotation raised maize grain yield by 91 over the 0 kg N fallow.
- Intervention effect Including sunn hemp in the rotation raised maize grain yield by 66 over the 0 kg N fallow.
- Intervention effect Including double‐cropped soybean in the rotation raised maize grain yield by 72 over the 0 kg N fallow.
- Intervention effect Including double‐cropped grain sorghum in the rotation raised maize grain yield by 12% over the 0 kg N fallow.
- Observation Fertilizer N replacement value of cowpea for maize was 53.
- Observation Fertilizer N replacement value of pigeonpea for maize was 64.
- Observation Fertilizer N replacement value of sunn hemp for maize was 43.
- Observation Fertilizer N replacement value of double‐cropped soybean for maize was 47.
- Observation Fertilizer N replacement value of double‐cropped grain sorghum for maize was –5 kg N ha −1.
- Recommendation Summer leguminous cover crops can reduce or supplement N requirements and increase grain yield of subsequent maize.