Management of pests and diseases in minor export crops (Sri Lanka)

cardamome cardamomo champignon clavo clou de girofle cloves cocoa beans coffee control de enfermedades disease control fungi hongos insecte nuisible insectos que atacan las semillas nematoda pest control methods pest insects pests of plants piper nigrum plagas de plantas ravageur des plantes seed damaging insects semilla de cacao stem eating insects