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Doll, Jerry D.Piedrahíta Castañeda, Wilson[Control químico de malezas en arroz de riego con semilla directa y semilla pregerminada]Control químico de malezas en arroz de riego con semilla directa y semilla pregerminada

A four-season trial was conducted using continuous maize (Zea mays L.) and soybeans (Glicine max (L.) Merr.) with the continuous use, rotation or combination of various herbicides to determine weed species shifts. No weed species increased in maize treated for four seasons with atrazine (2-chloro...


Doll, Jerry D.Piedrahíta Castañeda, Wilson[Herbicide and crop rotation effects on the weed complex]Herbicide and crop rotation effects on the weed complex

Doll, Jerry D.Piedrahíta Castañeda, Wilson[Methods of weed control in cassava]Methods of weed control in cassava

In this study a new formulation of EPTC, the new products glyphosate and napropamide and high rates of butilate, vernolate and EPTC were tested in purple nutsedge (Cyperus rotundus L.). The slow release formulation of EPTC was more persistant than the regular EPTC. High rates (16 kgia/ha) of the ...


Piedrahíta Castañeda, WilsonDoll, Jerry D.[Aspectos recientes en el control del coquito (Cyperus rotundus L.)]Aspectos recientes en el control del coquito (Cyperus rotundus L.)

The herbicides dalapon, glyphosate, paraquat, MSMA, and diuron were evaluated for their postemergence selectivity in cassava (Manihot esculenta Crantz). Four methods of application were also tested: with a shield, directed without a shield, and hitting the lower 25 or 50 percent of the plant. In ...


Piedrahíta Castañeda, WilsonDoll, J.[Herbicidas postemergentes en yuca (Manihot esculenta Crantz) selectividad, metodos de aplicacion e interaccion con edad]Herbicidas postemergentes en yuca (Manihot esculenta Crantz) selectividad, metodos de aplicacion e interaccion con edad

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...


Doll, Jerry D.Piedrahíta Castañeda, Wilson[Margen de selectividad de varios herbicidas en la yuca]Margen de selectividad de varios herbicidas en la yuca

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 ...


Piedrahíta Castañeda, WilsonMesia 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)
Doll, Jerry D.Piedrahíta Castañeda, Wilson[Effect of glyphosate on the sprouting of Cyperus rotundus L. tubers]Effect of glyphosate on the sprouting of Cyperus rotundus L. tubers

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