SU0002694 SSNL - Laserfiche WebLink

Home Browse Search

S Soil Chemical Analy The capability of soil to receive agricultural waste is classified in three categories:slight,moderate and severe. Each labeling the soils' capability limitations to the applications of agricultural waste. The following categories represent specific areas that are commonly used to evaluate soil. • Available water capacity: Site conditions of>6.0"are considered to have slight limitations Site conditions of 3.0"to 6.0"are considered to have moderate limitations Site conditions of<3.0"are considered to have severe limitations Soils 220,236,237 and 241 are considered to have severe limitations to applications of agricultural waste. It is recommended to reduce application rates and use split applications for contaminants can flow deep into the soil profile due to low retention from the soil. Applications of agricultural wastes improve available water capacity. Soils 102,193 and 219 are considered to have moderate limitations to applications of agricultural waste. It is recommended to reduce application rates for contaminants can flow deep into the soil profile due to low retention from the soil.Applications of agricultural wastes improve available water capacity • Dense layer(Bulk density),grams/cc: All the soils are considered to be<1.7 grams/cc which classifies them as having a slight limitations to applications of agricultural wastes. It is recommended that applications of solids are when soil moisture content is such that the field is in tillable condition.Applications reduce bulk density and minimizes y compaction. • Cation exchange,meq/100g of soil: Site conditions of>15 are considered to have slight limitations Site conditions of 5 to 15 are considered to have moderate limitations Site conditions of<5 are considered to have severe limitations Soils 237,241 and 102 having test results ranging from 7.7 to 13.8 are considered to have moderate limitations to applications of agricultural wastes. It is recommended that this is a relatively low adsorption and exchange of cations and heavy metals.Soil monitoring of element concentrations through the soil profile is recommended to evaluate farming practices and application rates of manure solids and nutrient laden water. Soil#: Cation exchange Limitations capacity,meq/1008 102 7.7 Moderate 237 9.8- 13.8 Moderate 236 24.5 Slight Soils off site to be used for manure solids and nutrient laden liquids: Soil#: Cation exchange Limitations capacity,meq/100g 220 25.7 Slight 219 28.6 Slight 193 28.0 Slight 241 7.8 Moderate m Western Design/David Avila 1999 I I I i 10