wwastelandwater conductivitywater contentwater drop penetration timewater mass contentwater release curvewater repellent soilwater retention curvewater soluble phosphatewater stable aggregatewater tablewater table perchedwater tensionwater use efficiencywaterloggedweakweatheringweedingwetlandwetting frontwheel track plantingwilting coefficientwilting pointwind erosion equationwindbreakwindrow compostingwindthrow mound