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The effect of microwaves on the eradication of fungal and bacterial pathogens in cassava sexual seed was investigated. Healthy mature fruits were collected and dried under ambient conditions. Seeds were selected according to specific wt. by placing them in a glass of water and discarding those th...


Lozano, J.C.Laberry, R.Bermudez, A.[Erradicacion de patogenos de semilla sexual de yuca (Manihot esculenta Crantz) mediante el tratamiento con microondas]Erradicacion de patogenos de semilla sexual de yuca (Manihot esculenta Crantz) mediante el tratamiento con microondas

The critical period of rice-weed competition was studied for the rice varieties Oryzica 1 and CICA 8, in 1989 and 1990. Weed species were: Eleusine indica, Echinochloa crus-galli, Echinochloa colonum, Cyperus difformis, Cyperus esculentus, Cyperus iria, Leptochloa filiformis, and Eclipta alba. Co...


Fischer, Albert J.Lozano, J.C.Ramírez Suárez, A.Sanint, Luis Roberto[Yield loss prediction for integrated weed management in direct-seeded rice]Yield loss prediction for integrated weed management in direct-seeded rice

Lozano, J.C.Bellotti, Anthony C.Reyes, J.A.Howeler, Reinhardt H.Leihner, D.E.Doll, Jerry D.[Problemas no cultivo da mandioca]Problemas no cultivo da mandioca

Lozano, J.C.Bellotti, Anthony C.Schoonhoven, Aart vanHoweler, Reinhardt H.Doll, Jerry D.Howell, DBates, T.[Field problems in cassava]Field problems in cassava

Information on some diseases and pests that attack cassava, as well as the symptoms induced by nutritional deficiencies and toxicities and damage resulting from the misuse of herbicides are given in this manual. Specific and general recommendations regarding the control of the described problems ...

En este manual se presenta informacion sobre algunas de las enfermedades y plagas que atacan a la yuca, como tambien los sintomas inducidos por deficiencias y toxicidades nutricionales y danos debidos al uso incorrecto de los herbicidas. Se incluyen recomendaciones generales y especificas para el...


Lozano, J.C.Bellotti, Anthony C.Reyes, J.A.Howeler, Reinhardt H.Leihner, D.E.Doll, J.[Problemas en el cultivo de la yuca]Problemas en el cultivo de la yuca

The reasons an integrated pest and disease control in cassava is justified are analyzed. Some cultural practices are listed that would lessen the problems caused by negative production factors within an ecosystem and would give high stable yields. Recommendations are given to maintain and enrich ...


Lozano, J.C.Bellotti, Anthony C.[Integrated control of diseases and pest of cassava (Manihot esculenta Crantz)]Integrated control of diseases and pest of cassava (Manihot esculenta Crantz)

Lozano, J.C.[Algunos sistemas para el posible control de enfermedades radicales de la yuca]Algunos sistemas para el posible control de enfermedades radicales de la yuca

Lozano, J.C.Zeigler, Robert S.[Methods to screen for resistance against foliar bacterial pathogens]Methods to screen for resistance against foliar bacterial pathogens

A new disease of cassava has been found inducing epidemics in several cassava-growing areas of Colombia during the rainy season. The disease can be recognized by a characteristic exaggerated elongation of the internodes of young stems of infected plants and by the distortion and deformation of th...


Lozano, J.C.Booth, RH[The superelongation disease of cassava]The superelongation disease of cassava

Lozano, J.C.Toro, Julio C.Castro Merino, A.Bellotti, Anthony C.[Producción de material de siembra de yuca]Producción de material de siembra de yuca

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