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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730
EISSN: 2072-6589
Vol. 3, No. 4, 1995, pp. 495-504
Bioline Code: cs95068
Full paper language: English
Document type: Research Article
Document available free of charge

African Crop Science Journal, Vol. 3, No. 4, 1995, pp. 495-504

 en Control of Digitaria abyssinica check for this species in other resources (A.Rich) Stapf. with Glyphosate
Baguma, S.D.; Webb, M. & Osiru, D.S.O.

Abstract

Investigated were conducted in Uganda on the effect of glyphosate dose rate, timing of application, and the combination of glyphosate with cultural methods for the control of Digitaria abyssinica check for this species in other resources (A.Rich) Stapf. Results showed a dose rate of 1.5 kg a.e.ha-1 to be optimum. Application with pre-plant tillage did not increase D. abyssinica control, but increased populations of other weeds and costs. Glyphosate efficacy was increased when preceded by slashing, burning or digging. At least one month was required between the cultural pre-treatments and spraying to allow new shoots to emerge. Glyphosate was most effective when applied to D. abyssinica shoots up to eight weeks after emergence. The optimum timing for spraying was between one and two month after cultural pre-treatment. Glyphosate applications considerably reduced labour requirement for preparation of D. abyssinica infested land.

Keywords
Glyphosate efficacy, Uganda, weed control

 
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