Community structure and regulatory mechanism of pest populations in rice paddies cultivated under intensive, traditionally organic and lower input organic farming in Japan

araneae arroz cero-labranza depredadores enemigos naturales ennemi naturel farming systems insecte nuisible japan japon mulch mulches natural enemies nilaparvata nilaparvata lugens oryza sativa pathogens pest insects pests of plants plagas de plantas predators ravageur des plantes rice riz sogatella sogatella furcifera zero tillage