Off-season precipitation is more useful to the crop because it recharges the soil profile. Precipitation that occurs during peak water use by the crop is the most beneficial. Seasonal distribution does not impact the effectiveness of the amount of precipitation. Parent material Vegetation Weather Topography 56 . Sulfur Nitrogen Calcium Phosphorus 63 .
Plants grow well in water saturated soils.
True False 64 . Insect infestations Precipitation levels Fungal infection Weed competition 67 . Smother crops All of the above. None of the above. When the economic damage to the crop is less than the cost of the control measure, the use of a control method is justified.