leek plantation covered with white spunbond fiber on a farm field. protection of the unharvested crop from night frosts and cold

agricultural agriculture agrofibre agroindustry areas bond cheap cold covered covering crops development effect efficiency efficient environmentally fabric farm farmer farming farmland fiber field friendly frosts greenhouse growing growth harmless harvest industry laid large leek material neutral night nonwoven plantation plants protection protective spun spunbond sunny temperature tractor unharvested unstable weather white