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the stomata or directly through the cuticle. On the lesions, pycnidia are formed from which orange-red masses of two-celled conidia are exuded.…
conditions, the spots may merge with lesions on the petioles and stems and form long dark streaks. On fruits, first small black specks are seen on…
material. Infection also takes place via wounds. After infection, galls are formed which break open, releasing many bacteria. These are dispersed by…
scale insects, they belong to the division Sternorrhyncha. The whiteflies form the family Aleyrodidae. The most common species are the greenhouse…
cortex and vascular tissue. In the infected host tissues, new sclerotia are formed. Wilting, falling of leaves and collapse of the whole plant may…
for the plants Ensure there is adequate soil drainage Apply nitrogen in the form of nitrate instead of ammonium Prevent damage during harvest and…
thrips ( Frankliniella occidentalis ) is the most damaging species. Thrips form the order Thysanoptera, a name that literally means ‘fringed wings’,…
females (alata) are yellow and black with dark wing veins while the wingless forms (apterae) are yellow with black cornicles, antennae, legs, and…
two elements silver and copper has a synergistic effect to disinfects all forms of microbes. Colloidal particles cause cold injury to microbial cell…
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