Abstract
SUMMARY Field studies were conducted during the 2014 and 2015 wet seasons at Zaria in the northern Guinea savanna and at Iburu in the southern Guinea savanna of Nigeria to determine the productivity of maize–soybean intercropping system. There were four treatment combinations in the experiment: sole maize; sole soybean; maize spaced at 50 cm and intercropped with soybean; and maize spaced at 65 cm and intercropped with soybean. The experiment was laid out in a randomized complete block design with three replications. The results showed that sole cropped maize and soybean generally outperformed the intercropped component crops. Land Equivalent Ratio (LER) was greater than 1 for all the intercrop treatments, indicating that it is advantageous to grow maize and soybean in association than in pure stands. Except for 2014 in Zaria, LER for intercropped maize spaced at 50 cm was higher than that for maize spaced at 65 cm. Gross Monetary Value (GMV) was generally higher for intercrops than sole crops except in Iburu in 2015 where GMV for intercropped maize spaced at 65 cm was similar to those of sole maize and soybean. Monetary Advantage Index (MAI) was positive for all intercrop treatments in both locations and years, which shows definite yield and economic advantages compared to the sole cropping systems. This suggests that farmers can intercrop soybean and maize with maize spaced at 50 cm and 65 cm.
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Claims 8
Claim · model-written summary
Sole maize generally outperformed intercropped maize.
- Treatment
- sole cropped maizee0
- Outcome
- outperformede0
- Direction
- outperformede0
- Comparator
- intercropped component cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sole cropped maize and soybean generally outperformed the intercropped component crops”
t0“MAIZE”
Claim · model-written summary
Sole soybean generally outperformed intercropped soybean.
- Taxon
- SOYBEAN
Glycine maxt0 - Treatment
- sole cropped maize and soybeane0
- Outcome
- outperformede0
- Direction
- outperformede0
- Comparator
- intercropped component cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sole cropped maize and soybean generally outperformed the intercropped component crops”
t0“SOYBEAN”
Claim · model-written summary
All maize–soybean intercrop treatments had land equivalent ratios above 1.
- Taxon
- MAIZE–SOYBEANGlycine max
Zea mayst0 - Treatment
- intercrop treatmentse0
- Outcome
- Land Equivalent Ratio (LER)e0
- Direction
- greater thane0
- Value
- 1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Land Equivalent Ratio (LER) was greater than 1 for all the intercrop treatments”
t0“MAIZE–SOYBEAN INTERCROPPING”
Claim · model-written summary
Except in Zaria in 2014, the land equivalent ratio was higher at 50 cm maize spacing than at 65 cm.
- Taxon
- MAIZE–SOYBEANGlycine maxZea mayst0
- Treatment
- intercropped maize spaced at 50 cme0
- Outcome
- LERe0
- Direction
- highere0
- Qualifier
- Except for 2014 in Zariae0
- Comparator
- maize spaced at 65 cme0
- Setting
- Zariae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except for 2014 in Zaria, LER for intercropped maize spaced at 50 cm was higher than that for maize spaced at 65 cm”
t0“MAIZE–SOYBEAN”
Claim · model-written summary
Gross monetary value was generally higher for intercrops than sole crops.
- Taxon
- MAIZE–SOYBEANGlycine maxZea mayst0
- Treatment
- intercropse0
- Outcome
- Gross Monetary Value (GMV)e0
- Direction
- highere0
- Qualifier
- except in Iburu in 2015e0
- Comparator
- sole cropse0
- Setting
- Iburue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gross Monetary Value (GMV) was generally higher for intercrops than sole crops except in Iburu in 2015 where GMV for intercropped maize spaced at 65 cm was similar to those of sole maize and soybean”
t0“MAIZE–SOYBEAN”
Claim · model-written summary
In Iburu in 2015, gross monetary value at 65 cm intercrop spacing was similar to sole maize and soybean.
- Taxon
- MAIZE–SOYBEANGlycine maxZea mayst0
- Treatment
- intercropped maize spaced at 65 cme0
- Outcome
- GMVe0
- Direction
- similare0
- Comparator
- sole maize and soybeane0
- Setting
- Iburue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Iburu in 2015 where GMV for intercropped maize spaced at 65 cm was similar to those of sole maize and soybean”
t0“MAIZE–SOYBEAN”
Claim · model-written summary
The monetary advantage index was positive for every intercrop treatment in both sites and years.
- Taxon
- MAIZE–SOYBEANGlycine maxZea mayst0
- Treatment
- intercrop treatmentse0
- Outcome
- Monetary Advantage Index (MAI)e0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monetary Advantage Index (MAI) was positive for all intercrop treatments in both locations and years”
t0“MAIZE–SOYBEAN”
Claim · model-written summary
The authors suggest intercropping soybean and maize at maize spacings of 50 cm and 65 cm.
- Taxon
- soybean and maizeGlycine maxZea mayse0
- Outcome
- intercrop soybean and maize with maize spaced at 50 cm and 65 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“farmers can intercrop soybean and maize with maize spaced at 50 cm and 65 cm”
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