Influence of different factors on chemical and mechanical weed control in potato fields

agricultural soils augmentation de rendement aumento del rendimiento azote biomasa biomass biomasse chemical control contenido de agua en el suelo escarda field experimentation herbicidas herbicide herbicides hortalizas (plantas) humus lutte chimique malezas mauvaise herbe metribuzin metribuzina nitrogen pesticidal properties propiedades plaguicidas soil types soil water content sol agricole solanum tuberosum suecia sweden teneur en eau du sol tipos de suelos type de sol variedades varieties vegetable crops weed control weeding weeds yield increases