CO0001455 - Laserfiche WebLink

Home Browse Search

San Joaquin County, California 51 capacity is low. The effective rooting depth is 60 inches slopes of 2 to 5 percent. Included areas make up about or more. Runoff is slow, and the hazard of water 15 percent of the total acreage. erosion is slight. The rate of water intake in irrigated Permeability is rapid in the Delhi soil. Available water areas is 3.0 inches per hour. The hazard of soil blowing capacity is low. The effective rooting depth is 60 inches is very severe. or more. Runoff is slow, and the hazard of water Most areas of this unit are used for irrigated crops, erosion is slight. The rate of water intake in irrigated orchards, or vineyards. A few areas are used for areas is 3.0 inches per hour. The hazard of soil blowing homesite development. is severe. This unit is suited to irrigated row, field, orchard, and Most areas of this unit are used for irrigated crops, vineyard crops. The main limitation is the low available orchards, or vineyards. A few areas are used for water capacity. General management considerations homesite development. include the very severe hazard of soil blowing. The high This unit is suited to irrigated row, field, orchard, and percentage of sand in the soil reduces the amount of vineyard crops. The main limitation is the low available moisture available for plant growth. Because the soil is water capacity. General management considerations droughty, applications of irrigation water should be light include the severe hazard of soil blowing. The high and frequent. The water should be applied in amounts percentage of sand in the soil reduces the amount of sufficient to wet the root zone but small enough to moisture available for plant growth. Because the soil is minimize the leaching of plant nutrients. Sprinkler and droughty, applications of irrigation water should be light drip irrigation systems are suitable. They permit an and frequent. The water should be applied in amounts even, controlled application of water, help to prevent sufficient to wet the root zone but small enough to excessive runoff, and minimize the risk of erosion. A minimize the leaching of plant nutrients. Sprinkler and tillage pan forms easily if the soil is tilled when wet. drip irrigation systems are suitable. They permit an Chiseling or subsoiling breaks up the pan. When the even, controlled application of water, help to prevent wind velocity is high in spring, the hazard of soil excessive runoff, and minimize the risk of erosion. A blowing can be reduced by properly managing all crop tillage pan forms easily if the soil is tilled when wet. residue and by minimizing tillage. Chiseling or subsoiling breaks up the pan. When the If this unit is used for homesite development, the wind velocity is high in spring, the hazard of soil main limitation is the rapid permeability in the blowing can be reduced by properly managing all crop substratum. Community sewage systems may be residue and by minimizing tillage. needed because seepage from onsite sewage disposal If this unit is used for homesite development, the systems can result in the contamination of water main limitation is the rapid permeability in the supplies. substratum. Community sewage systems may be This map unit is in capability units Ills-4 (MLRA-17), needed because seepage from onsite sewage disposal irrigated, and IVe-4 (MLRA-17), nonirrigated. It is in systems can result in the contamination of water vegetative soil group B. supplies. This map unit is in capability units Ills-4 (MLRA-17), 142—Delhi loamy sand, 0 to 2 percent slopes. This irrigated, and IVe-4 (MLRA-17), nonirrigated. It is in very deep, somewhat excessively drained, nearly level vegetative soil group B. soil is on dunes. It formed in wind-modified alluvium derived from granitic rock sources. Elevation is 25 to 143—Delhi-Urban land complex, 0 to 2 percent 135 feet. The average annual precipitation is about 11 slopes. This nearly level map unit is on dunes. inches, the average annual air temperature is about 60 Elevation is 25 to 135 feet. The average annual degrees F, and the average frost-free period is about precipitation is about 11 inches, the average annual air 270 days. temperature is about 60 degrees F, and the average Typically, the surface layer is grayish brown and light frost-free period is about 270 days. brownish gray loamy sand about 16 inches thick. The This unit is 50 percent Delhi loamy sand and 35 upper 10 inches of the underlying material is grayish percent Urban land. The components of this unit occur brown loamy sand. The lower part to a depth of 60 as areas so intricately intermingled that it was not inches is pale brown sand. In some areas the surface practical to map them separately at the scale used. layer is loamy fine sand or fine sand. Included in this unit are small areas of Honcut, Included in this unit are small areas of Honcut, Tinnin, and Veritas soils in the slightly lower landscape Tinnin, and Veritas soils in the slightly lower landscape positions. Also included are small areas of soils that Positions. Also included, on the slightly higher parts of have been altered by construction activities. Included the landscape, are small areas of Delhi soils that have areas make up about 15 percent of the total acreage.