P U B L I S H ED IN F E B R U A R Y, M A R C H, A P R I L, A U G U ST A ND S E P T E M B ER BY O. M. S C O TT & S O NS C O ., M A R Y S V I L L E, O H IO June 1929 S E C O ND Y E AR Number 5 WATCH FOR WEB WORMS SOD web worms do a great amount of damage to lawns and putting greens every year. These small grayish worms, the caterpillars of white and yellowish brown moths, eat ofi grass just at the crown. Brown dead spots then appear in the turf. No one can prophesy how severe will be the trouble in any one year. This depends upon weather conditions and upon the prevalence of parasites which ordinarily keep web worms in check. Our suggestion is to watch your lawn carefully during June, July and August for the appearance of small brown dead spots. If these are observed, surround- ing areas should be scrutinized closely to determine if any of the worms are present. It is difficult to find the worms as they move swiftly and they are hard to see because of their dirty-grayish color. from Life Cycle Web worms originate little white and yellowish brown moths. They lay their eggs in early June on blades of grass and these are hatched in from six to ten days. The young worms move down into the soil where they form a loose silken web while feeding on the grass roots, and, during the lat ter half of July form cocoons in which they pass the pupal stage and from which the moths emerge a little later. These moths continue the cycle and the new larvae become partly grown before winter, to become fully grown the fol- lowing May. They then pupate and the moths hatched in June proceed to re- peat the cycle. Distinguishing Characteristics The web worm in many instances has become confused with the army worm. The latter is usually about two long, having a dark gray or inches dingy black color with three narrow yellowish stripes on its back besides a slightly darker and broader stripe on each side. In contrast web worms have no stripes but are covered with small tubercles each bearing a tuft of small hairs. They are from one-half to three- fourths of an inch long. Arsenate rotating Control Measures of Lead. Dust this chemi- cal on infested turf at rate of 6 or 7 pounds per 1,000 square feet. A hand dusting machine or a fan duster is best although arsenate can be put on by placing it in a coarse burlap sack and shaking the sack up and down with a quick jerky motion. It can also be mixed with soil or fertilizer and then broadcast by hand or through a me- chanical seeder like the Lawn Master. distributed it should be worked down into the ground by sweeping the lawn with a floor brush or broom. Following this it should be washed ofi the grass blades. A mechanical sprinkler is not satisfac- tory, but a stream of water should be applied direct from a nozzle. this has been After Kerosene Emulsion. The cheapest treatment is to make a kerosene emul- COPYRIGHT, 1929, BY O. M. SCOTT, & SONS CO, sion but there is considerable danger incident to using it. There is a fire haz- ard in making improperly it, and made it may injure turf. if The Bureau of Entomology of the United States Department of Agricul- ture recommends the following proced- ure in making a kerosene emulsion: "Dissolve 1 pound of laundry soap in 1 gallon of boiling water; remove from fire, add J4 gallon of kerosene, stir rap- idly until a creamy emulsion is ob- tained. This stirring may be accom- plished by pumping the mixture into through a spray pump or by itself churning it in an inexpensive house- hold butter churn. Small quantities have been prepared with an egg beater. For use as a spray, 1 part of this stock emulsion should be mixed with 50 parts of water and this mixture applied to the infested turf at the rate of about 1 gallon to a square yard (112 gallons to 1,000 square feet). Apply with a sprinkling can." The material cost is about one-sixth of a cent per square yard. Dichloro-ethyl-ether Emulsion. Some- one has suggested that the name of this chemical alone is enough to scare sod web worms out of the country. It is widely used on the west coast and is reported highly effective. it for approximately It may be obtained from the larger in chemicals and companies dealing insecticides forty cents per pound in 10 pound quantities. Since is an oily substance which doesn't easily mix with water, the emul- sion form should be obtained to sim- plify mixing. Place 2 ยก4 pounds in about 100 gallons of water and apply this on 1000 square feet of infested turf by means of a compressed air spray or sprinkling can. Summer Feeding locations. Where Many lawns need summer feeding, especially those on rather poor soils or in shaded the turf has turned brown from lack of plant food in the soil, there is a noticeable thinning out of the grass and it gives evidence of being starved. Grass may be fed with a complete food such as Scotts Turf Builder every sixty days if it is thin and unhealthy. Where a three times per year feeding program suggest April, June and September. The sum- mer applications demand a little greater care as to method and amount. Method of Application is carried out we To insure uniform distribution we suggest mixing 10 pounds of Turf Builder with a bushel basket full of screened soil or sand and applying it to each 1000 square feet. Do this when the grass is dry, and if the topdressing is done by hand it is a good plan to use the back of a rake or a broom to spread the material evenly. Otherwise streaks will show in the lawn and those spots receiving the heaviest dose. Mixing the Turf Builder with sand or soil simplifies the task considerably and the topdressing material itself is quite beneficial to the grass. Among other things it tends to cover up the exposed roots and protect them from the glar- ing sun. Water Important Apply Turf Builder late in the after- noon rather than during the heat of the day. Just before a rain is ideal. If such a fortunate time cannot be selected, give the lawn a good, thorough soaking after the task is completed. O. M. SCOTT & SONS CO. MAR YS V! LLE OHIO EVERY PACKAGE OF SCOTTS LAWN SEED BEARS THIS TRADE-MARK AND IS SEALED FOR YOUR PROTECTION 2 5a