TechNotes Sept. 23 – Fall Fertilization, Rust, Yellow Jackets, Soil Temps

Technotes are provided by Syngenta Professional Products.

SEPTEMBER FERTILIZATION. To enhance recovery of cool season lawns that have suffered heat and drought injury, fertilize lawns now to promote growth. Fall fertilization is important to promote turf growth and recovery now that temperatures are a cooler. On most cool season turfgrasses a September fertilization followed by a late season application will help promote a healthy lawn going into winter. A general rule for a September fertilization is to apply between 0.5 to 1.0 pounds of nitrogen per 1000 square feet depending on the situation (amount of damage, level of fertility for the year, etc).

Mowing, even damaged turf will help promote tillering and thus thicken the lawn. If the lawn has been reseeded, mowing will help promote tillering of the new seedlings.

RED SHOES, RUSTY LAWNS.To enhance recovery of cool season lawns that have suffered heat and drought injury, fertilize lawns now to promote growth. Fall fertilization is important to promote turf growth and recovery now that temperatures are a cooler. On most cool season turfgrasses a September fertilization followed by a late season application will help promote a healthy lawn going into winter. A general rule for a September fertilization is to apply between 0.5 to 1.0 pounds of nitrogen per 1000 square feet depending on the situation (amount of damage, level of fertility for the year, etc).

Mowing, even damaged turf will help promote tillering and thus thicken the lawn. If the lawn has been reseeded, mowing will help promote tillering of the new seedlings.

YELLOW JACKETS. Those pesky yellow jackets flying around trash cans, decks and picnic areas at the moment are not in a good mood. Yellow jackets are meat-eaters usually feast on caterpillars and flies early in the year. During late summer, their appetites switch from the high protein diet of insects to a carbohydrate diet. Thus, the appearance of yellow jackets at this time of the year around trash bins, picnic baskets, and open soda cans. Yellow jackets attack with little provocation. They appear to be attracted to people wearing dark cloths or intense floral patterns, musked-based perfumes, and bad breath (I guess it pays to brush your teeth.) Fortunately, yellow jackets do not overwinter as adults, so as cooler temperatures arrive this insect will become more lethargic. If a nest is near a home and control is desired, apply a labeled insecticide at night. Yellow jackets do not come out at night and control is best done at this time.

Fla 
Visit www.greencastonline.com for soil temperature maps and other information on pest pressures and weather specific to your area of the country. These temperatures are valid for Sept. 23, 2005. Map: www.greencastonline.com.

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