This is the 9th edition of the 2008 OMAFRA Turf Management Update recorded on June 27.
Just a general note about the turf updates. There will sometimes be pesticide recommendations for controlling different turf pests. If you are in a municipality that currently has a pesticide by-law, it is important that you know all the restrictions on pesticide use in your particular municipality. On that note, the legislation to ban the cosmetic use of pesticides in Ontario (Bill 64) was passed last week. There will be more information forthcoming over the next few months on the details. The ban will take effect in spring, 2009.
Weather:
Last week was cooler and wetter than normal. The forecast for the next 7-14 days is more of the same. This time last year turf was already suffering from lack of water. This year is quite different so far.
Diseases:
The conditions will probably be fairly good for dollar spot over the next two weeks. It has been very late in starting (roughly two weeks later than normal). Some other diseases that will probably be active over the next week are anthracnose basal rot and take-all patch. The heavy rain is setting things up for summer patch, but we just haven’t had the consistent heat yet to have any symptoms develop yet. There has been some yellow patch persisting because of the cooler and wetter than normal conditions. If you have any unknown turf problems, please contact the GTI Turf Diagnostics. Information on this service is available at the link below. You can email them at diagnostics@guelphturfgrass.ca or telephone at (519) 824-4120 x 58873.
Insects:
Lots of excitement in the insect world. There have been heavy European chafer flights all week. We are heading into the peak adult flight window. The Japanese beetles are just a little bit behind. We were at a golf course this week that had adult European chafers under the turf ready to emerge and Japanese beetle grubs. We are now in the ideal window for Merit applications targeted for European chafer and Japanese beetle. On the subject of grubs, I am desparately seeking a trial site to do a European chafer grub trial later this summer. If anyone has an customer with an estate lot with lots of grubs, I would love to hear from you. I am looking for roughly a 20 x 20 meter area of grub infested turf. You can reach me by phone at (519) 824-4120 x 52597 or by email at ‘; document.write( ‘<a ‘=”” +=”” path=”” ‘\”=”” prefix=”” ‘:’=”” addy38728=”” ‘\’=”” style=”color: rgb(45, 78, 155);”>’ ); document.write( addy_text38728 ); document.write( ‘<\/a>’ ); //–>\n Annual bluegrass weevil damage seems to have come and gone now. Most superintendents are now seeing the adult stage.
<a ‘=”” +=”” path=”” ‘\”=”” prefix=”” ‘:’=”” addy38728=”” ‘\’=”” style=”color: rgb(45, 78, 155); font-family: Arial, Verdana, Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: center; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(29, 177, 43);”>
The plant that signals the peak egg laying of hairy chinch bug, bird’sfoot trefoil is blooming now. We should start to see some chinch bug nymphs developing in the next couple of weeks. Chinch bug damage however, is probably three weeks away.
There have been a few more reports of armyworms. It appears that they are also a problem in many of the US states surrounding us. The general consensus is that they will not do permanent damage unless the crowns that have been exposed are subjected to heat and drying winds. With the current temperatures that we are having there is little risk of the crowns dying out from exposure to heat and sunlight.
<a ‘=”” +=”” path=”” ‘\”=”” prefix=”” ‘:’=”” addy38728=”” ‘\’=”” style=”color: rgb(45, 78, 155);”>Weeds:
The crabgrass plants have developed quickly over the last week and many are in the multi-tiller stage. At this point it is best to switch to fenoxaprop-ethyl (Acclaim Super) for crabgrass control. The cool weather next week will extend the window for broadleaf herbicide treatment. Temperatures are cool enough that there still is active weed growth.
Ryegrass Seedheads:
Now that the Kentucky bluegrass plants have finished flowering, the perennial ryegrass plants have started. The stands of perennial ryegrass will appear to have a brownish tinge from the seedheads. Once the seedheads are mowed there is a yellow cast to the fields from the stemmy, tough yellow stems that are left behind.
Thanks for calling the Turf Updates. This message will be updated on Fri. July 4, 2008.
– See more at: https://lawnsavers.com/turf-hotline-2008/turfgrass-management-agriphone-for-june-26-2008.html#sthash.h2Wydqqe.dpuf
