20210715-APHIS-LSC-0583
SWEEP NET COLLECTION OF GRASSHOPPERS
U.S. Department of Agriculture (USDA) Animal and Plant Health and Inspection Service (APHIS) Plant Protection and Quarantine (PPQ) Program Technician Hannah Lewis conducts a rangeland grasshopper suppression survey, to evaluate the adult grasshopper density, in Stillwater County, North of Columbus, Montana, on July 15, 2021. The information will be used for treatment options. This is a one-square-mile section of state-owned land. The type of ownership determines the amount of cost-share responsibility. For example, federal and trust property is fully funded, State-owned property receives funding for half the cost, private rangeland property 2/3rds of the cost is paid by the landowner, and for private eligible cropland 100% of the costs are paid by the landowner.
Nymphal or early season surveys can be applied to treatment plans that same year, and adult grasshopper surveys would produce predictive data for the following year.
To conduct a survey, a count card to help evaluate 18 different 1-square-foot sections. The grasshoppers in each of those sections are counted. That total is divided by two for a nine-square-foot section, which is then used to express the grasshopper count per square yard.
The data is entered into the APHIS Arc Geographic Information Systems (ArcGIS) Collector Application. The smart tablets use the ArcGIS application to compile and share standardized data from multiple users and locations into maps for various uses such as predictive modeling and treatment effectiveness. If the number of grasshoppers or density is high enough, it may warrant a sample to be captured and brought back to the field office for further use. SEEN HERE, She would then use a sweep net to collect adult grasshoppers.
USDA Media Photo by Lance Cheung.
20210715-APHIS-LSC-0583
SWEEP NET COLLECTION OF GRASSHOPPERS
U.S. Department of Agriculture (USDA) Animal and Plant Health and Inspection Service (APHIS) Plant Protection and Quarantine (PPQ) Program Technician Hannah Lewis conducts a rangeland grasshopper suppression survey, to evaluate the adult grasshopper density, in Stillwater County, North of Columbus, Montana, on July 15, 2021. The information will be used for treatment options. This is a one-square-mile section of state-owned land. The type of ownership determines the amount of cost-share responsibility. For example, federal and trust property is fully funded, State-owned property receives funding for half the cost, private rangeland property 2/3rds of the cost is paid by the landowner, and for private eligible cropland 100% of the costs are paid by the landowner.
Nymphal or early season surveys can be applied to treatment plans that same year, and adult grasshopper surveys would produce predictive data for the following year.
To conduct a survey, a count card to help evaluate 18 different 1-square-foot sections. The grasshoppers in each of those sections are counted. That total is divided by two for a nine-square-foot section, which is then used to express the grasshopper count per square yard.
The data is entered into the APHIS Arc Geographic Information Systems (ArcGIS) Collector Application. The smart tablets use the ArcGIS application to compile and share standardized data from multiple users and locations into maps for various uses such as predictive modeling and treatment effectiveness. If the number of grasshoppers or density is high enough, it may warrant a sample to be captured and brought back to the field office for further use. SEEN HERE, She would then use a sweep net to collect adult grasshoppers.
USDA Media Photo by Lance Cheung.