Can you tell me about sprayer calibration?
1. For a broadcast boom - measure the distance between nozzles. Measure it, don't guess. For a band, either on a planter or on a cultivator, measure the width of the area sprayed (band).
2. Determine the length, in feet, of a 1/128 acre plot for the measured nozzle spacing or band width. This will be the distance to time the tractor.
3. To do this use the following formula: 43,560 (square feet per acre) / divided by nozzle spacing or band width in feet / divided by 128. * Example - 19 inch band on a cultivator 19 / 12 = 1.583333 feet (band width in feet) 43,560 (sq.ft./ac) / 1.583333 = 27511.584 27511.584 / 128 (ounces in a gallon) = 214.934 (215) feet to time the tractor.
4. Determine the time in seconds for the tractor to travel 215 feet. (Remember to determine the time to travel the distance under the condition of operation, i.e. with the cultivator down, etc.)
5. With the pressure set and the sprayer spraying, catch water from all tips spraying the band (or one tip on a broadcast boom) for the exact same time it took to travel the prescribed distance and measure it in ounces. * Lets say it took 25 seconds and you caught 10 ounces. You are putting out 10 gallons of volume per treated acre.
6. Determine the tank capacity and divide by the volume per treated acre. * Example: 300 gallon tank capacity and 10 gallons per treated acre = 30 acre per tank load. This tells you that the sprayer will treat 30 acres. Don't worry about how many acres the tractor will drive over - it will treat 30 acres.
7. Determine the broadcast rate of the product, or products in question and add enough to the tank to treat 30 acres on a broadcast basis. The tractor will treat 30 treated acres and don't worry how many planted acres it runs over.
STARKVILLE, Miss. -- Cotton leafroll dwarf virus is capable of causing significant yield loss and was reported for the first time in Mississippi earlier this year.
The implications of this disease will be a major focus of the 2019 Mississippi State University Row Crop Short Course Dec. 2-4 at the Cotton Mill Conference Center in Starkville. This course is hosted by the MSU Extension Service and Mississippi Agricultural and Forestry Experiment Station.
Parts of Mississippi’s landscape are turning white, but unlike some northern areas, this coloration is caused by cotton bolls opening for harvest, not snow accumulation.
All of Mississippi’s 2019 cotton crop has emerged, but it’s off to a slow start.
Of approximately 700,000 acres of cotton planted statewide this year, 57% is rated fair or worse by the U.S. Department of Agriculture as of July 8.
Although numbers on paper look about right for Mississippi row crops, the reality is actually quite grim in places.
HAMILTON, Miss. -- Determining the extent of tornado damage to farms in Monroe County will take weeks, but video shot from flying drones will speed up the process.
Mississippi State University Extension Service personnel have been assisting in relief efforts since the morning after an EF-2 tornado on April 13 damaged more than 140 homes in Hamilton, claiming one life and injuring 19 others.