Claim · model-written summary
Insecticidal treatment also reduced cowpea haulm production.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- Insecticidal treatmente2
- Outcome
- Haulm productione1
- Direction
- reducede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crops of cowpea”
e1“Haulm production was also reduced”
e2“Insecticidal treatment reduced the incidence of all pests”
Title
Pests of cowpea and their control in Northern Nigeria
R. H. Booker Bulletin of Entomological Research 1965. doi:10.1017/s0007485300049762
Other claims from this paper (17)
- Observation Cowpea crops in Northern Nigeria are normally so heavily attacked by insects that potential yields are seldom realised.
- Observation The most important cowpea pests are Maruca testulalis (damaging flowers and pods), Piezotrachelus varium (attacking seeds) and four Coreid species that destroy pods.
- Observation In 1961, Maruca testulalis, P. varium and Coreids together destroyed 62 per cent of the potential cowpea seed crop from June sowings.
- Observation In 1961, Maruca testulalis, P. varium and Coreids together destroyed 92 per cent of the potential cowpea seed crop from July sowings.
- Observation In 1961, Maruca testulalis, P. varium and Coreids together destroyed 19 per cent of the potential cowpea seed crop from August sowings.
- Observation In 1962, the pests destroyed 55 per cent of the potential cowpea seed crop from June sowings.
- Observation In 1962, the pests destroyed 75 per cent of the potential cowpea seed crop from July sowings.
- Observation In 1962, the pests destroyed 29 per cent of the potential cowpea seed crop from August sowings.
- Intervention effect Spray insecticide treatments starting at the first appearance of the flowers gave large yield increases in cowpea field trials.
- Intervention effect The best treatment, 1 lb DDT with 0.1 lb BHC per acre applied six times weekly, gave an average cowpea yield of 1,623 lb dry seed per acre, a substantial increase over the estimated national average of 158 lb per acre.
- Intervention effect Three applications of DDT/BHC, and six or three applications of Sevin at 1 lb per acre, gave poorer results on the whole than the best treatment.
- Intervention effect Insecticidal treatment reduced the incidence of all cowpea pests.
- Intervention effect Insecticidal treatment led to a corresponding reduction in flower losses.
- Intervention effect Insecticidal treatment compressed the flowering period of cowpea.
- Intervention effect Insecticidal treatment induced earlier flowering and pod production in cowpea.
- Intervention effect Insecticidal treatment caused the bulk of the cowpea crop to mature at one time.
- Recommendation Cowpea crops grown for haulms rather than for seed should not be treated with insecticides.