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Thirty-four fungicides were applied to soil at the time the blast susceptible Fanny rice variety was planted in 1 m(2) plots, replicated twice. On the basis of blast incidence and spike development the most effective fungicides were Benlate, NF.44, Duter, Brestan and Desmosan
Electron microscopic examination of thin section from rice hoja blanca virus (RHBV)-infected barnyard [Echinocloa colonum (L.) Link] revealed the occurrence of large masses of flexuous, tubular particles, 8-10 nm wide, both in the cytoplasm and nucleus. These inclusions were absent in cells from ...
Sixty rice cultivars were planted in 20 m long plant beds 1.20 m wide at two locations: Meta Department where good temperature and humidity conditions exist for blast (Pyricularia oryzae) development, and Cauca Valley where temperature is near optimum but humidity is low. At the Cauca location th...
Seeds provide an efficient method for disseminating pathogenic organisms to different locations; more than 50 percent of the major bean diseases are seed borne. Mechanical damage, which may occur during harvesting, threshing and/or planting, can affect seed viability, germination and contaminatio...
La semilla constituye un metodo eficiente de diseminacion de organismos fitopatogenos entre distintas localidades; mas del 50 por ciento de las principales enfermedades del frijol son transmitidas por semilla. El dano mecanico que ocurre durante la cosecha, trilla y/o siembra tambien puede afecta...
Bean crops are attacked by several viruses transmitted by insects among which are: (1) beet curly top virus (Circulifer tenellus); the best control measure is the utilization of resistant var.; (2) the tobacco yellow dwarf virus (Orosius argentatus); (3) the tomato spotted wilt virus, which is tr...
El cultivo del frijol es atacado por varios virus transmitidos por insectos, entre los cuales estan: 1) el virus del apice rizado de la remolacha (Circulifer tenellus); la mejor medida de control es el uso de var. resistentes; 2) la muerte de verano del frijol (Orosius argentatus); 3) el virus de...
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