[Field crop diseases and pests]

agricultural warning services avertissement agricole bacteria beta biological control brassica campo cereal crops champ champignon control de enfermedades control de plagas crops cultivos cultivos de cereales danemark denmark dinamarca disease control enfermedades de las plantas environmental protection extension extension activities feed grasses fields fungi grain legumes hongos insecta leguminosas de grano lutte antiravageur lutte biologique maladie des plantes mycoplasma nematoda pest control pesticide pesticides pests of plants plagas de plantas plaguicidas plant diseases plant protection plant viruses plante de culture protection de l'environnement protection des plantes ravageur des plantes solanum virus de las plantas vulgarisation zea mays