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Journal Article 1977

Autor: Doll, J. Pinstrup-Andersen, Per Díaz, R.O.

A survey of weeds and weeding practices was carried out by a team of agricultural economists and agronomists on 283 farms in 5 cassava-growing regions of Colombia at 3 times during a cropping season. From 71-78 percent of the weed species present were broad- leaved species. As cassava grew older,...

Enlace original: https://cgspace.cgiar.org/handle/10568/88321

Investigación en Agricultura
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Doll, J. ,  Pinstrup-Andersen, Per ,  Díaz, R.O. ,  [An agro-economic survey of the weeds and weeding practices in cassava (Manihot esculenta Crantz) in Colombia] ,  An agro-economic survey of the weeds and weeding practices in cassava (Manihot esculenta Crantz) in Colombia
Journal Article 1977

Autor: Díaz, R.O. Pinstrup-Andersen, Per Doll, J.

A survey was made of weed species, weed densities and common weeding practices on 3 visits during the growing season to some 300 farms in 5 cassava-growing regions of Colombia. Broadleaf weeds were the commonest in all regions (62-65 percent of the species); there was a shift to slightly more gra...

Enlace original: https://cgspace.cgiar.org/handle/10568/88413

Investigación en Agricultura
Enlace permanente
Díaz, R.O. ,  Pinstrup-Andersen, Per ,  Doll, J. ,  [Las malezas y su control en el cultivo de la yuca en Colombia] ,  Las malezas y su control en el cultivo de la yuca en Colombia
Journal Article 1978

Autor: Díaz, R.O. Bellotti, Anthony C. Schoonhoven, Aart van

Approx 20 insects and mites were found attacking cassava in several regions of Colombia at different growth stagcs and seasons. Thrips (Frankliniella williamsi), gall midges (Cecidomyiidae) and whiteflies (Bemisia sp. and Trialeurodes sp.) were present in greater than 50 percent of the plantation...

Enlace original: https://cgspace.cgiar.org/handle/10568/88440

Investigación en Agricultura
Enlace permanente
Díaz, R.O. ,  Bellotti, Anthony C. ,  Schoonhoven, Aart van ,  [Insectos y acaros que atacan el cultivo de la yuca en Colombia] ,  Insectos y acaros que atacan el cultivo de la yuca en Colombia

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