June 9, 2021 Issue, Page 4 of 8

Page Text

4 June 9, 2021 Agriculture Bagworms are Back Garden tips for June Normally we consider bagworms as a pest on ornamental trees, but many of our fruit crops and pecans can be susceptible to bag- General Landscape grasses can be a problem. HLA-6420) Flowers worms too. If control is needed on fruit or nut trees, Bt or Bacillus •Find someone to water plants in the •White grubs will soon be emerging as •Pinch back leggy annuals to encourage thuringiensis var. kurstaki, a bacterial insecticide should work fine. house and garden while on vacation. Har- adult June Beetles. Watch for high popula- new growth. Fertilize and water appropri- With just a few bagworms, mechanical removal will work fine too vesting vegetables and mowing the lawn are tions that can indicate potential damage ately. (pick them off and smash). If growers are seeing infestations this a must and imply that someone is home. from later life cycle stages as grubs in the •Feed established mums and other peren- year, they need to also prepare to treat next season. After mating •Mulch ornamentals, vegetables, and an- summer. nials. this fall, females will lay hundreds of eggs inside the old bag and nuals to reduce soil crusting, and to regulate •When picking fresh roses or remov- then drop to the ground to die. Then during the late May to early temperatures and moisture during hot sum- Fruit and Nut ing faded ones, cut back to a leaflet facing June timeframe, the larvae will emerge again to repeat the cycle. mer months. Mulching will reduce about 70 •Renovate overgrown strawberry beds the outside of the bush to encourage open This is a prime time to treat. percent of the summer yard maintenance. after the last harvest. Start by setting your growth and air circulation. Reports of bagworms on pecan and fruit trees have been seen •Remain alert for insect damage. Add spi- lawnmower on its highest setting and mow •Stake tall perennials before toppling where insecticides have not been used. The fruit tree demonstration der mite to the list. Foliage of most plants off the foliage. Next thin crowns 12-24 winds arise. block at the research station at Perkins has a few tiny bagworms on becomes pale and speckled; juniper foliage inches apart. Apply recommended fertilizer, pear and other trees. turns a pale yellowish color. Shake a branch preemergence herbicide if needed and keep CONTACT: Greg Hartman| Beckham County The picture below shows how small the bag is on a pear leaf. over white paper and watch for tiny specks watered. (HLA-6214) OSU Extension Center | that crawl. Watch for first generation fall (580) 928-2139 | [email protected] webworm. (EPP-7306) Trees and Shrubs Oklahoma State University, in compliance with •Vigorous, unwanted limbs should be re- Title VI and VII of the Civil Rights Act of 1964, Turfgrass moved or shortened on new trees. Watch Executive Order 11246 as amended, Title IX of •Fertilize warm-season grasses at 1 lb. N for forks in the main trunk and remove the per 1,000 square feet. Do not fertilize fescue least desirable trunk as soon as it is noticed. the Education Amendments of 1972, Americans and other cool-season grasses during the (HLA-6415) with Disabilities Act of 1990, and other federal summer. •Pine needle disease treatments are need- laws and regulations, does not discriminate on •Dollar spot disease of lawns can first be- ed again in mid-June. the basis of race, color, national origin, sex, age, come visible in mid-May. Make certain fer- •Remove tree wraps during the summer to religion, disability, or status as a veteran in any of tilizer applications have been adequate be- avoid potential disease and insect buildup. its policies, practices or procedures. This includes fore applying a fungicide. (EPP-7658) •Softwood cuttings from new growth of but is not limited to admissions, employment, fi- •Seeding of warm-season grasses should many shrubs will root if propagated in a nancial aid, and educational services. References CONTACT: Greg Hartman| Beckham County OSU Extension Center | be completed by the end of June (through moist shady spot. within this publication to any specific commercial (580) 928-2139 | [email protected] July for improved varieties such as Riviera •Protect trees from lawnmowers and weed product, process, or service by trade name, trade- Oklahoma State University, in compliance with Title VI and VII of the and Yukon to reduce winterkill losses. (HLA- eaters by mulching or using protective aer- mark, service mark, manufacturer, or otherwise Civil Rights Act of 1964, Executive Order 11246 as amended, Title IX of 6419) ated covers. does not constitute or imply endorsement by the Education Amendments of 1972, Americans with Disabilities Act of • Brown patch disease of cool-season Oklahoma Cooperative Extension Service. 1990, and other federal laws and regulations, does not discriminate on the basis of race, color, national origin, sex, age, religion, disability, or status as a veteran in any of its policies, practices or procedures. This includes but is not limited to admissions, employment, financial aid, and educational ser- vices. References within this publication to any specific commercial product, Agriculture news provided by process, or service by trade name, trademark, service mark, manufacturer, or otherwise does not constitute or imply endorsement by Oklahoma Coopera- OSU Extension office in Sayre tive Extension Service. Brown Patch Disease of Cool-Season Grasses Brown patch is a disease that favorable for disease develop- or by running the irrigation sys- national origin, sex, age, religion, financial aid, and educational ser- manufacturer, or otherwise does not commonly shows up on cool ment. tem for a short time. Good sur- disability, or status as a veteran vices. References within this pub- constitute or imply endorsement by season turfgrasses, especially When environmental condi- face and soil drainage must be in any of its policies, practices or lication to any specific commercial Tall Fescue, but can occasionally tions favor disease, avoid ap- present to reduce disease inci- procedures. This includes but is not product, process, or service by trade Oklahoma Cooperative Extension appear on hybrid bermudagrass plication of excessive rates of dence. Make sure mower blades limited to admissions, employment, name, trademark, service mark, Service. and zoysiagrass. Brown patch nitrogen. Fertilizer should be are sharp to reduce the amount disease appears as brown patch- applied judiciously, and ad- of wounded turfgrass in which es up to three feet in diameter. equate amounts of phosphorus the fungus can enter the plant. Leaves first take on a dark color, then wilt and turn brown. Brown patch usually occurs and potassium are essential to ensure the highest possible levels of plant resistance. In Collect and promptly dispose of clippings on infected areas or when conditions favor disease Protecting Trees in the Landscape in hot, humid weather when general, cool season turfgrasses development. Avoid mowing One of the leading causes of “mulch volcano” and can also (580) 928-2139 | greg.hart- night temperatures are above should not receive more than turfgrass when wet, and do not death to trees in the landscape have detrimental effects. Occa- 60°F and foliage remains wet one pound of actual nitrogen mow too low so that the turf- [email protected] is what we refer to as weed-eater sionally weeds and grasses that for prolonged periods. Poor soil per 1,000 square feet at any one grass will be better able to resist or lawnmower “blight.” This is creep into the mulched area may Oklahoma State University, in drainage, lack of air movement, time. Use very low rates or avoid the disease. usually a result of someone try- need to be sprayed with an her- compliance with Title VI and VII of cloudy weather, heavy dew, applying nitrogen in late spring Applications of effective fun- ing to get too close to the base of bicide. Herbicides with glypho- the Civil Rights Act of 1964, Execu- overwatering and watering in or summer to cool-season turf- gicides, when the first disease the tree when controlling grass- sate as the active ingredient es and weeds. Constant use of work quite well. Be sure to read tive Order 11246 as amended, Title late afternoon favor prolonged grasses. In a typical home lawn symptoms appear, will give good weed eaters around the base of and follow label directions. IX of the Education Amendments leaf wetness and increased dis- situation, the last application of control of brown patch on highly trees wears down the bark and Another option for small trees ease severity. The application fertilizer in the spring should be maintained turfgrass. A preven- of 1972, Americans with Disabili- eventually cuts into the cam- is to put trunk guards or protec- of high rates of nitrogen and applied no later than early May. tative fungicide program should bium layer girdling the tree and tive wraps made of flexible plas- ties Act of 1990, and other federal or deficiencies of phosphorus Ensure adequate amounts of be considered in areas where the cutting it off to water and nutri- tic. In some cases, tree stakes laws and regulations, does not dis- and potassium, especially when phosphorus and potassium by above conditions are difficult to ents. Lawn mowers often take act as a barrier from mechanical criminate on the basis of race, color, weather conditions are favor- applying these nutrients based control or change and when con- big chunks out of the trunk of injury. the tree with similar results. The For larger, more established national origin, sex, age, religion, able for brown patch, can in- on soil test results. ditions are favorable for disease crease disease severity. Exces- Reduce prolonged leaf wet- development. other problem is both wounds trees, a mulched area or even disability, or status as a veteran open the tree up for attack from a bare area near the trunk will in any of its policies, practices or sive thatch, mowing when wet ness by watering infrequently to CONTACT: Greg Hartman| insects and/or diseases. help keep lawnmowers and weed and leaf fraying by dull mower a depth of 6 to 8 inches and at Beckham County OSU Extension To avoid this problem a weed eaters away. Or consider plant- procedures. This includes but is not blades can also enhance the se- a time when the foliage is likely Center | and grass free area should be ing groundcovers or perennials limited to admissions, employment, verity of brown patch. to dry quickly. Avoid watering (580) 928-2139 | greg.hart- maintained around the base for a more aesthetical appeal. financial aid, and educational ser- Control starts with good man- in late afternoon and evening [email protected] of the tree. For young trees a In any event, avoid injury to agement practices. Though there and allow for better air move- Oklahoma State University, in 4- to 6-foot diameter circle will the trunks of your trees at all vices. References within this pub- are varieties of turf-type Tall ment by removing unwanted compliance with Title VI and VII of work. Mulch can be placed 1 to 2 costs. While many trees can re- lication to any specific commercial Fescue that are considered re- vegetation and selectively prun- the Civil Rights Act of 1964, Execu- inches thick in this area to help cover from an occasional, small product, process, or service by trade keep weeds and grass out and wound, repeated damage weak- sistant to brown patch, even re- ing trees and shrubs. Removal of tive Order 11246 as amended, Title at the same time moderate soil ens the tree sending it into a name, trademark, service mark, sistant varieties succumb when morning dew reduces prolonged IX of the Education Amendments temperatures and soil moisture. declining spiral and eventually manufacturer, or otherwise does not growing conditions are less than leaf wetness and exudates that of 1972, Americans with Disabili- Be sure to keep the mulch a few death. constitute or imply endorsement by ideal for growth of strong plants favor disease development. This ties Act of 1990, and other federal inches away from the trunk. Pil- CONTACT: Greg Hartman| (as described above) and envi- can be accomplished by drag- laws and regulations, does not dis- ing mulch several inches up the Beckham County OSU Extension Oklahoma Cooperative Extension ronmental conditions are highly ging a hose across the turfgrass criminate on the basis of race, color, trunk is often referred to as a Center | Service. Beckham County OSU Extension Weed Control in Vegetable Gardens Center | (580) 928-2139 | greg.hart- [email protected] Weeds rob vegetables of valu- ample space for gardening. If plant will emerge rapidly, shade such as sudangrass, sorghum or a small area, some may be seri- Oklahoma State University, in able water, light, and nutrients. this is the case, be sure to leave the soil, and prevent weed seed buckwheat. Establishing a cover ously damaged by any herbicide compliance with Title VI and VII of Weeds often harbor insects, dis- enough space between rows germination. crop regimen early can help with that you might select. However, the Civil Rights Act of 1964, Execu- tive Order 11246 as amended, Title eases, and nematodes that can to allow room for cultivating • Close spacing of vegetable the success of shading out com- there are a few formulations IX of the Education Amendments damage vegetables and greatly equipment. crops can inhibit weed growth petitive weeds. Winter cover available which make them safer of 1972, Americans with Disabili- reduce yields. Cultivation and hoeing when the leaves overlap at ma- crops can prevent soil erosion, and easier to use. For example, ties Act of 1990, and other federal Mulching, hoeing, and hand- should be done when weeds are turity. In a raised bed, keep this runoff and cool season weed es- glyphosate foam is easier to laws and regulations, does not dis- weeding are methods that can small because weeds compete in mind for spacing plants. tablishment, while adding valu- use and poses less risk to desir- criminate on the basis of race, color, be used to control most of the with the crops for light, water, • Mulches of either organic able organic matter. able plants. Some preemergence national origin, sex, age, religion, weeds in the garden and to elim- and nutrients. Also, when weeds (clean straw/hay, paper) or syn- Weeds may also be controlled herbicides can also be used suc- disability, or status as a veteran inate the problems of applying are large, they are much more thetic (plastic) will shade the with herbicides. However, cessfully in the garden when in any of its policies, practices or an herbicide and the possibility difficult to remove without dam- soil surface, controlling most chemical weed control in the transplants are used or after procedures. This includes but is not of herbicide injury to the garden aging the crops. Cultivation and annual weed species. home garden is difficult because seeds sown have emerged and limited to admissions, employment, crop. Good soil preparation, ad- hoeing should be done shallowly • Sanitation of the garden at of the diversity of the crops matured. Visit your local garden financial aid, and educational ser- equate control of weeds before so that injury to the root system the end of the season is critical. grown in the garden. It is hard center or county extension of- vices. References within this pub- planting, and planting crops of the crop plants will not occur. Remove and destroy remaining to find an herbicide that is selec- fice for information on current lication to any specific commercial when the soil is warm enough to Hand-weeding in the crop row is weeds and their seed heads. tive enough to remove a specific preemergence herbicide prod- product, process, or service by trade get them up rapidly are all good usually necessary. • Cover crops are ideal to weed without the potential or ucts. name, trademark, service mark, practices that will help maintain Other cultural methods for shade out weeds, even bermu- probability that it will also kill or The best weed control in the manufacturer, or otherwise does not a minimum amount of labor for weed control include: dagrass. Bermudagrass can be damage some of the crops in the home garden is a sharp hoe and constitute or imply endorsement by weed control. Many Oklahoma • Crop selection – pick a crop shaded and discouraged by the garden. With several types of good mulch. Oklahoma Cooperative Extension gardeners in rural areas have and growing season where the dense canopy of a cover crop plants located close together in CONTACT: Greg Hartman| Service.