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Journal Article 1974

Autor: Doll, Jerry D. Piedrahíta Castañeda, Wilson

Twenty-six herbicides were evaluated at 3 rates each in cassava (Manihot esculenta Crantz). For the 21 preemergence herbicides, planting was done before application in half the plot and then in the other half. After incorporating the 5 preplant-incorporated products, half the plot was ridged befo...

Enlace original: https://cgspace.cgiar.org/handle/10568/88362

Investigación en Agricultura
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Doll, Jerry D. ,  Piedrahíta Castañeda, Wilson ,  [Margen de selectividad de varios herbicidas en la yuca] ,  Margen de selectividad de varios herbicidas en la yuca
Conference Paper 2007

Autor: Ekeleme, F. Kamara, A.Y. Oikeh, S.O. Chikoye, D. Omoigui, L.O.

Rice production by smallholder farmers in the savannas of Nigeria is constrained by weed competition. A field study was conducted to assess the effect of weed competition on the performance of upland rice varieties in 2005 and 2006 in the northern Guinea and Sudan savannas of Nigeria. The experim...

Enlace original: https://cgspace.cgiar.org/handle/10568/90616

Investigación en Agricultura
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Ekeleme, F. ,  Kamara, A.Y. ,  Oikeh, S.O. ,  Chikoye, D. ,  Omoigui, L.O. ,  [Effect of weed competition on upland rice production in north-eastern Nigeria] ,  Effect of weed competition on upland rice production in north-eastern Nigeria
Journal Article 1975

Autor: Piedrahíta Castañeda, Wilson Mesia P., R. Doll, J.

Two studies were conducted to determine the best integrated weed control system for cassava (Manihot esculenta Crantz), in addition to the selectivity of preplant incorporated (PPI) herbicides and their interactions with the planting system. Three preemergence treatments followed by hand weeding ...

Enlace original: https://cgspace.cgiar.org/handle/10568/88369

Investigación en Agricultura
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Piedrahíta Castañeda, Wilson ,  Mesia P., R. ,  Doll, J. ,  [Control integrado de malezas y uso de herbicidas PSI en yuca (Manihot esculenta Crantz)] ,  Control integrado de malezas y uso de herbicidas PSI en yuca (Manihot esculenta Crantz)
Conference Paper 1974

Autor: Flinn, J.C.
Enlace original: https://cgspace.cgiar.org/handle/10568/98200

Investigación en Agricultura
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Flinn, J.C. ,  [Resources use, income and expenditure patterns of Yoruba smallholders] ,  Resources use, income and expenditure patterns of Yoruba smallholders
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
Book Chapter 1979

Autor: Leihner, D.E. Doll, Jerry D.

Some cultural control measures of weeds in cassava are discussed: quality of the material, planting system and density, density x plant type interaction and use of mulching. In order to study the interaction plant type x planting density, var. M Mex 59 (vigorous) and M Col 22 (nonvigorous) were p...

Se describen algunas medidas de control cultural de malezas en yuca: calidad del material; sistema y densidad de siembra; interaccion tipo de planta x densidad y uso de coberturas. Para estudiar la interaccion tipo de planta x densidad de siembra, se sembraron las var. M Mex 59 (Vigorosa) y M Col...

Enlace original: https://cgspace.cgiar.org/handle/10568/81706

Investigación en Agricultura
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Leihner, D.E. ,  Doll, Jerry D. ,  [Control cultural de las malezas en yuca] ,  Control cultural de las malezas en yuca
Book Chapter 1983

Autor: Leihner, D.E. Thung, M. Cock, James H. Lynam, John K.

A detailed review on cassava production in intercropping systems is given, based on the following aspects: selection of plant types for intercropping; realtive planting time, planting density and pattern (spatial arrangement); mineral nutrition and fertilization, competition for nutrients; pest, ...

Enlace original: https://cgspace.cgiar.org/handle/10568/81619

Investigación en Agricultura
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Leihner, D.E. ,  Thung, M. ,  Cock, James H. ,  Lynam, John K. ,  [Produccion de yuca en cultivos multiples] ,  Produccion de yuca en cultivos multiples

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