Chemical weed control in irrigated okra in the Nigerian Sudan savanna zone

Autor: S.T.O. Lagoke, S. K. Karikari, M. K. Ahmed, K. O. Adejonwo
Rok vydání: 1991
Předmět:
Zdroj: Tropical Pest Management. 37:91-95
ISSN: 0143-6147
DOI: 10.1080/09670879109371544
Popis: Field experiments were conducted at the Irrigation Research Station, Kadawa in the Sudan savanna zone of Nigeria during the 1984 and 1985 dry seasons to identify selective pre‐emergence herbicide mixtures for weed control in two varieties of okra (Abelmoschus esculentus L. Moench). The variety of okra only had a significant effect on crop vigour score at 6 weeks after sowing in 1985 when var. V35 was more vigorous than TAE‐38. In 1984, despite supplementary hoe‐weeding at 6 weeks after sowing, all the herbicide treatments resulted in significantly lower fruit yield than the hoe‐weeded control. Among the herbicide treatments, metolachlor plus prometryne at 2.0 + 1.0 kg a.i./ha followed by supplementary hoe‐weeding resulted in significant weed reduction and the highest okra fruit yield. Metolachlor plus terbutryne and pendimethalin plus prometryne, each at 2.0 + 1.0 kg a.i./ha. followed by supplementary hoe‐weeding also reduced weed infestation significantly and resulted in fruit yield comparable t...
Databáze: OpenAIRE