The main objectives of this expt. were to study the optimum dosage of the preemergence herbicide, oxyfluorfen, on different soil types by evaluating the chemical injury on cassava leaves; investigate the relationship between the diameter of the cutting and the initial growth; analyze aspects of m...
Kano, Y
,
Leihner, D.E.
,
[Optimum dosage of a new preemergence herbicide oxifluorfen (Commercial name GOAL) on the cassava planted in different soil types]
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Optimum dosage of a new preemergence herbicide oxifluorfen (Commercial name GOAL) on the cassava planted in different soil types
Observations and recommendations on the use of the herbicide oxyfluorfen are included on the basis of research conducted at the Centro Internacional de Agricultura Tropical (CIAT) on its efficiency in selective weed control in cassava, effect on yield, rates of application, and possible combinati...
Leihner, D.E.
,
Domínguez, J.
,
Kano, Y
,
López, J.
,
[Recomendaciones para el uso del nuevo herbicida pre-emergente "GOAL" en yuca]
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Recomendaciones para el uso del nuevo herbicida pre-emergente "GOAL" en yuca
Two trials were conducted to evaluate the efficiency of a commercial cassava harvester (A) and a harvesting implement (B): (1) the var. Chiroza (difficult, to harvest) was planted using 3 systems (beds, ridges and on the flat) at different densities and (2) three cassava var. (M Col 22, CMC 84 an...
Con el fin de evaluar la eficiencia de una cosechadora comercial de yuca (A) y un implemento (B), se establecieron 2 ensayos: 1) se sembro la var. Chiroza (dificil de cosechar) en 3 sistemas de siembra (camas, camellones y en plano) con diferentes densidades. 2) Se sembraron 3 var. de yuca (M Col...
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...
Sieverding, E
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Leihner, D.E.
,
[Influence of crop rotation and intercropping of cassava with legumes on VA mycorrhizal symbiosis of cassava]
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Influence of crop rotation and intercropping of cassava with legumes on VA mycorrhizal symbiosis of cassava
The type and magnitude of losses in cassava caused by Cyperus rotundus were determined. Two field expt. were conducted at Instituto Colombiano Agropecuario-Caribia exptl. station, Magdalena (Colombia) at 35 m.a.s.l. The location has an annual mean temp. of 280 degrees Celsius, mean annual precipi...
Leihner, D.E.
,
López M., J.
,
[Perdidas en el rendimiento y la calidad de la yuca (Manihot esculenta Crantz) causadas por coquito (Cyperus rotundus L.)]
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Perdidas en el rendimiento y la calidad de la yuca (Manihot esculenta Crantz) causadas por coquito (Cyperus rotundus L.)
In view of the lack of information on the use of herbicides in polycultures including non-commercial crop species, 2 expt. were designed to identify herbicides and doses suitable for crop associations including cassava. A total of 6 products were tested single or in mixtures having been chosen fo...
López M., J.
,
Leihner, D.E.
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[Control quimico de malezas en policultivos con yuca (Manihot esculenta Crantz)]
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Control quimico de malezas en policultivos con yuca (Manihot esculenta Crantz)