Intervention effectmodel-written summary

Cassava tuber yield was maximal at the narrowest cassava spacing and highest cowpea density in both seasons.

A claim from Studies on Cassava ( Manihot esculenta Crantz) Intercropped with Fodder Cowpea ( Vigna sinensis L.) in Sandy Soil · 2011

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cassava tuber yield was maximal at the narrowest cassava spacing and highest cowpea density in both seasons.

Treatment
lowest cassava spacing (1.0 m x 0.75 m)e0
Outcome
yield of cassava tuberse0
Direction
maximume0
Qualifier
highest cowpea plant density (42000 plants/fed) in both seasonse0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“maximum yield of cassava tubers was associated with lowest cassava spacing (1.0 m x 0.75 m) associated with highest cowpea plant density (42000 plants/fed) in both seasons.”

✓ located verbatim in the source · abstract, characters 563–735

Title

Studies on Cassava ( Manihot esculenta Crantz) Intercropped with Fodder Cowpea ( Vigna sinensis L.) in Sandy Soil

Sahar Sherif; Azza Kh; Salem; et al. Egyptian Journal of Agronomy 2011. doi:10.21608/agro.2011.152

Other claims from this paper (4)

Record rev-a2340cfb9e30ff46635e676f6fd87f9fda642f448bd730e2d3ee7444e4f43625 · schema claims-v0.9 · position 1 in the model’s answer

density · yield · Manihot esculenta (cassava)Positive and negative results

23 papers: 17 positive, 6 negative or no effect

16 papers in the same direction as this claim · 5 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    Cassava yield was unaffected by insecticide treatment or maize planting density.

    Effects of termite damage to maize of seed extracts of Azadirachta indica and Piper guineense in farmers' fields · 1999

    Opposite direction

  2. no effect
    Population had no effect on tuber and stalk yield.

    Effects of plant population on soil structure, soil moisture depletion and on yield of cassava (Manihot esculentd) on an Ultisol in Southeast Nigeria · 1987

    Opposite direction

  3. no effect
    Growth and production parameters did not differ significantly between the planting density treatments.

    LA PRODUCCIÓN DE SEMILLAS Y RAÍCES DEL CULTIVO DE YUCA SE MANTIENE BAJO DIFERENTES DENSIDADES DE SIEMBRA: UN ENFOQUE AGROECOLÓGICO · 2020

    Opposite direction

  4. negative
    Increasing maize density significantly reduced cassava tuber weight.

    EFFECTS OF INCREASING MAIZE PLANTING DENSITY IN A CASSAVA/MAIZE MIXTURE AND WEEDING FREQUENCY ON THE PERFORMANCE OF CASSAVA (Manihot esculenta Crantz) IN ADO – EKITI, SOUTHWESTERN NIGERIA · 2010 · compared with sole cropped cassava (control)

    Opposite direction

  5. no effect
    Root yield, tuberous root length and tuberous root diameter of cassava were not influenced by changes in interrow spacing.

    Reduction of interrow spacing in cassava (Manihot esculenta Crantz) production · 2022

    Opposite direction

  6. no effect
    Growth and production parameters did not differ significantly between density treatments.

    THE SEEDS AND ROOTS PRODUCTION OF SWEET CASSAVA CROP IS MAINTAINED UNDER DIFFERENT PLANTING DENSITIES: AN AGROECOLOGICAL APPROACH · 2020 · compared with between the planting density treatments

    No difference from an alternative

  7. positive
    Cassava tuber yield was highest at 80,000 cowpea plants/ha.

    Effect Of Cowpea Planting Density On Growth, Yield And Productivity Of Component Crops In Cowpea/Cassava Intercropping System · 2008

    Same direction

  8. positive
    Higher plant density increased tuber yield per hectare, with a greater mean increase in Aipin Valenca than the other two varieties.

    Growth rates of three cassava varieties (Manihot esculenta Crantz) under varying population densities · 1973

    Same direction

14 papers more in this group

See all 23 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.