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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).

Hooded Sprayer2. 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.)

Highboy5. 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.

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News

Filed Under: About Extension, Cotton April 14, 2020

The Mississippi State University Extension Service has a new cotton specialist.

Brian Pieralisi was appointed to that role on April 1. He replaced Darrin Dodds, who took the helm of the university’s Department of Plant and Soil Sciences.

Graphic showing 2020 planting intentions
Filed Under: Agriculture, Corn, Cotton, Peanuts, Rice, Soybeans, Forages, Coronavirus March 31, 2020

STARKVILLE, Miss. -- Weather always plays a role in the spring planting decisions of Mississippi row-crop producers, but the market impact of the ongoing COVID-19 pandemic is another variable they will have to consider in 2020.

A tall, green weed in the foreground with a cloudy sky and cotton field in the background.
Filed Under: Crops, Cotton March 2, 2020

STONEVILLE, Miss. -- Pathologists with Mississippi State University will be monitoring a relatively new plant disease in state cotton fields once the growing season is in full swing.

Cotton leafroll dwarf virus, or CLRDV, was first reported in Alabama in 2017. It is closely related to a cotton virus known to occur in South America. Historically, that virus has caused up to 80 percent yield losses in Brazilian cotton fields.

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Filed Under: Extension Administration, Agriculture, Cotton, Fruit, Beef, Dairy, Goats and Sheep February 24, 2020

2020 marked Bill Fitts’ 27th consecutive appearance at the annual North Mississippi Producer Advisory Council meeting.

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Filed Under: Agriculture, Corn, Cotton, Rice, Soybeans, Poultry, Timber Prices December 18, 2019

In 2019, Mississippi’s agricultural industry faced the prospect of dipping below $7 billion for the first time in eight years, but federal payments pushed its value up enough to post a slight gain over 2018.

The estimated value of Mississippi agriculture in 2019 is $7.39 billion, a 0.2% gain from last year’s $7.37 billion. Included in the total is an estimated $628 million in government payments, the largest amount of federal assistance Mississippi producers have seen since 2006

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