Paper · 2023 · Journal of Agricultural Science

Effects of Intercropping on Maize and Soybean Yield Performance, Land Equivalent Ratio, and Maize Leaf Area in Conservation Agriculture

Otim Godfrey Anyoni; Tumwebaze Susan; Ekwangu Joseph; et al.

9
claims
17
verbatim quotes
7
citations
1
research areas
✓
Open access · cc-by

Abstract

Maize-soybean intercropping systems as a conservation farming practice are receiving increased focus from the scientific community. This is because of the advantages of intercropping, especially nutrient benefits through cereal-legume interactions, alternative sustainable methods to manage biotic stress (pests, diseases, weeds), and crop failure risk management due to erratic weather. In addition, smallholders in developing countries commonly use intercropping to produce crops. In Uganda, 40% of smallholder farmers are practicing intercropping yet no adequate location-specific information is available to inform their practice. Farmers who adopted conservation farming practices did not mulch their maize due to drudgery associated with collecting mulch. This study evaluated the effect of two tillage methods (T1 = Conventional tillage using ox drawn mould board plough, T2 = Minimum tillage using ox drawn ripper) and five soil cover practices (SC1 = Mulched Maize, SC2 = Control no mulch, SC3 = Two rows of soybean in between one row of maize, SC4 = One row of soybean in between one row of maize, SC5 = Sole soybean) on maize and soybean yield performance. The trials were established for 4 rainy seasons on a sandy loam ferrosol at National Agricultural Research Organization Institute in Lira, Uganda. Soil cover practice had a significant effect on maize and soybean crop Yield. Mulching significantly increased maize yield and LAI. The LER for both intercropping partterns were above 1.2. Tillage methods were not significantly different in determining crop performance. The practice of minimum tillage should also be adopted because it enhances the positive effects of soil cover (intercropping). We recommend farmers to adopt the intercropping pattern of one row of soybean in between maize row spaced at 75 × 30 cm for better LER, and crop performance. This intercropping pattern maximizes on available resources to deliver better output in conservation farming. Maize crop generally performed better during first season as compared to second season. We recommend farmers to utilize the first rains as the main maize production season.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 9

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil cover significantly affected maize yield.

Taxon
MaizeZea mayst0
Treatment
Soil cover practicee0
Outcome
crop Yielde0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Soil cover practice had a significant effect on maize and soybean crop Yield.”

✓ located verbatim in the source · abstract, characters 1315–1392 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil cover significantly affected soybean yield.

Taxon
soybeanGlycine maxe0
Treatment
Soil cover practicee0
Outcome
soybean crop Yielde0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Soil cover practice had a significant effect on maize and soybean crop Yield.”

✓ located verbatim in the source · abstract, characters 1315–1392 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Mulching significantly increased maize yield and LAI.

Taxon
MaizeZea mayst0
Treatment
Mulchinge0
Outcome
maize yield and LAIe0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Mulching significantly increased maize yield and LAI.”

✓ located verbatim in the source · abstract, characters 1393–1446 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Both intercropping patterns had land equivalent ratio above 1.2.

Taxon
MaizeZea mayst0
Outcome
LERe0
Direction
abovee0
Value
1.2e0
Qualifier
both intercropping partternse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The LER for both intercropping partterns were above 1.2.”

✓ located verbatim in the source · abstract, characters 1447–1503 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tillage methods did not significantly differ for crop performance.

Taxon
MaizeZea mayst0
Treatment
Tillage methodse0
Outcome
crop performancee0
Direction
not significantly differente0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Tillage methods were not significantly different in determining crop performance.”

✓ located verbatim in the source · abstract, characters 1504–1585 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Minimum tillage should be adopted because it enhances soil-cover effects.

Taxon
MaizeZea mayst0
Outcome
minimum tillage should also be adoptede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The practice of minimum tillage should also be adopted because it enhances the positive effects of soil cover (intercropping).”

✓ located verbatim in the source · abstract, characters 1586–1712 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Farmers are recommended to intercrop one soybean row between maize rows at 75 × 30 cm.

Taxon
MaizeZea mayst0
Outcome
intercropping pattern of one row of soybean in between maize row spaced at 75 × 30 cme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We recommend farmers to adopt the intercropping pattern of one row of soybean in between maize row spaced at 75 × 30 cm for better LER, and crop performance.”

✓ located verbatim in the source · abstract, characters 1713–1870 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize performed better in the first season.

Taxon
MaizeZea mayst0
Outcome
performed bettere0
Direction
bettere0
Qualifier
first seasone0
Comparator
second seasone0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Maize crop generally performed better during first season as compared to second season.”

✓ located verbatim in the source · abstract, characters 1981–2068 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Farmers are recommended to use first rains as the main maize production season.

Taxon
MaizeZea mayst0
Outcome
utilize the first rains as the main maize production seasone0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We recommend farmers to utilize the first rains as the main maize production season.”

✓ located verbatim in the source · abstract, characters 2069–2153 · show in text ↑
t0

“Maize and Soybean Yield Performance”

✓ located verbatim in the source · title, characters 28–63 · show in text ↑

mulching · yield · Zea mays (maize)Positive and negative results

364 papers: 330 positive, 34 negative or no effect

329 papers in the same direction as this paper · 31 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative
    Without nitrogen in the wet year, mulched plots yielded much less.

    Effect of a Killed Sod Mulch on Nitrate Movement and Corn Yield1 · 1973 · compared with conventionally‐tilled no nitrogen treatment

    Opposite direction

360 papers more in this group

See all 364 papers →

tillage · yield · Zea mays (maize)Positive and negative results

1,099 papers: 812 positive, 287 negative or no effect

286 papers in the same direction as this paper · 812 in the opposite direction

  1. positive
  2. positive
  3. positive

1,095 papers more in this group

See all 1,099 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.