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, Wilson
,
Doll, Jerry D.
,
[Aspectos recientes en el control del coquito (Cyperus rotundus L.)]
,
Aspectos recientes en el control del coquito (Cyperus rotundus L.)
Cutting sedge (Scleria pterota Presl.) is a common weed in pastures. It grows vigorously and forms patches in poorly drained soils and appears uniformly dispursed in pastures on rolling land. It is unpalatable to cattle and is extremely competitive with pasture species. It was found that both diu...
Argel M., Pedro J.
,
Doll, Jerry D.
,
[Control de cortadera (Scleria pterota Presl.) y establecimiento de pasto]
,
Control de cortadera (Scleria pterota Presl.) y establecimiento de pasto
Camacho, A.J.
,
Argel M., Pedro J.
,
Doll, J.
,
[Control de gramalote (Paspalum fasciculatum Willd.) con dalapon y glifosato y establecimiento de pasto Para (Brachiaria mutica)]
,
Control de gramalote (Paspalum fasciculatum Willd.) con dalapon y glifosato y establecimiento de pasto Para (Brachiaria mutica)
Red rice (Oryza satlva L ) has been a serious problem in rice fields for hundreds of years and even now no effective control measure exist. In this study, new approaches were evaluated. Flooding for two weeks prior to seeding IR-22 eliminated 99 percent of the tall variety Bluebonnet 50, which ha...
Cheaney, Robert L.
,
López, Rodrigo L.
,
Doll, Jerry D.
,
[Algunos métodos promisorios para el control de arroz rojo y arroz espontáneo de variedades indeseables]
,
Algunos métodos promisorios para el control de arroz rojo y arroz espontáneo de variedades indeseables
Resistance to herbicides in weeds associated with rice The factors determining the evolution of resistance to herbicides in weeds are analyzed as well as the criteria used to detect this evolution and the mechanisms of resistance to herbicides in weeds. Several concepts on the prevention of the a...
Se analizan los factores que determinan la evolución de la resistencia de las malezas a los herbicidas, los criterios para detectar esa evolución y los mecanismos de resistencia de las malezas a los herbicidas; se estudian también algunos conceptos sobre la prevención de la aparición de las malez...
Fischer, Albert
,
Valverde, Bernal E.
,
[Resistencia a herbicidas en malezas asociadas con arroz]
,
Resistencia a herbicidas en malezas asociadas con arroz
Action mode and mechanism of herbicides in rice fields The action mode and mechanism of herbicides in rice crops are described, specifically inhibitors of acetyl-CoA carboxylase (ACC); acetolactate synthase (ALS); photosystem II; photosystem I electron acceptor (paraquat); protoporphyrinogen oxid...
Se describen el modo y el wwmecanismo de acción de los herbicidas en el cultivo del arroz: inhibidores de la acetil-CoA carboxilasa (ACC-asa); de la acetolactato sintasa (ALS); del fotosistema II; captador de electrones del fotosistema I (paraquat); inhibidores de la protoporfirinógeno oxidasa (P...
Strategies adopted by weed researchers center on two aspects; cultural methods and chemical use. Cultural methods are intended to reduce weed competition through multiple and intercropping and high plant populations while herbicides reduce weed competition through the direct elimination of weeds....
Las estrategias que han adoptado los investigadores en malezas se centran en 2 aspectos: metodos culturales y uso de productos quimicos. Los metodos culturales pretenden reducir la competencia de malezas mediante cultivos multiples y asociados y altas poblaciones de plantas, mientras que los herb...
An expt. was established in Esparza (Costa Rica), on the integrated management of web blight (Thanatephorus cucumeris) in common beans under the min. tillage system. Var. Porrillo 70 (intermediate resistance) and ICA Pijao (susceptible) were used. Herbicides gliphosate and paraquat (1.0 kg/ha) of...
Sánchez, H.M.
,
Alfaro M., R.
,
Morales G., A.
,
MORA B., B.
,
Gálvez E., Guillermo E.
,
[Manejo integrado de mustia hilachosa causada por Thanatephorus cucumeris (Frank) Donk en frijol comun]
,
Manejo integrado de mustia hilachosa causada por Thanatephorus cucumeris (Frank) Donk en frijol comun