- About ESA
- Join / Renew
- Pay Invoices
- Member Log-In
Rose bushes were obtained from a commercial nursery and transported to the Michigan State University campus during the last week of Apr 2002. They were maintained in a nursery holding area on black plastic. The plants were in individual 8-inch plastic pots and were hand-watered three times per wk. The plants were 15-18 inch tall and were fully leafed-out at the beginning of the test. Flowers and flower buds were picked off the plants prior to infesting them with mites. They were removed on a weekly basis throughout the test.
$Voyager Orange$ marigolds, raised from seed in flats by a commercial greenhouse, were replanted as seedlings in 6-inch diameter clay pots on 16 May. They were 6-8 inch tall and were beginning to flower at the time of the test. The plants were watered daily by a drip irrigation system and fertilized manually on a weekly basis. The marigolds were held in a greenhouse at the Center for Integrated Plant Systems, Michigan State University, East Lansing, MI.
The test was conducted at the Texas A&M University Agricultural Research and Extension Center at Weslaco, TX. The treatments include two applications of pyriproxyfen (Knack 0.86 EC) at 0.067 lb AI/acre, two applications of pyriproxyfen at 0.067 lb AI/acre followed by three applications of lambda-cyhalothrin (Warrior) at 0.03 lb AI/acre, spinosad (SpinTor 2SC) at 0.125 lb AI/acre, milbemectin (Milbemectin 1EC) at 0.03 lb AI/acre, milbemectin at 0.03 lb AI/acre + SunSpray Ultra Fine oil at 2% (v/v), and lambda-cyhalothrin at 0.03 lb AI/acre. Untreated plants were used as controls.
Efficacy data for additional acaricides were deemed necessary for raspberry. This test was applied on an existing commercial block of $Heritage$ raspberry in Judsonia, AR. On 26 Jun and on 11 Jul 2002, the foliage of three rows of raspberry plants was sprayed with Sevin Concentrate 22% (Garden Tech, LLC) at a rate of 12 oz formulation/4 gal using a Solo backpack diaphragm pump sprayer at 40 psi (one cone nozzle). This treatment caused an outbreak of Two spotted spider mite (TSSM) and European red mite (ERM) in Jul.
This trial was conducted at the Northwest Michigan Horticulture Research Station in Traverse City, MI in cooperation with MSU-Extension District IPM agent Gary Thornton. Three-tree plots were arranged in a RCB design with four replications. The test materials were applied at threshold on 16 Aug to mature Montmorency tart cherry trees with an FMC 1229 airblast sprayer calibrated to deliver 60 gpa. A maintenance application of Asana XL was made on 2 Aug for control of cherry fruit fly.
A trial was conducted on mature $Bing$ cherry trees in a commercial orchard near Linden, CA. Five experimental insecticides and an untreated control were replicated six times in a RCB design. Each replicate consisted of an individual tree with buffer trees in each direction. Treatments were applied between 8:00 a.m. and 10:00 a.m. on 26 Aug with a hand-held orchard sprayer operating at 250 psi and delivering 400 gpa of finished spray (3.67 gal/tree).
Miticides were applied to 15-yr-old $Delicious$ apple trees at the Trevor Nichols Research Complex in Fennville, MI (Brown Block) with an FMC 1029 airblast sprayer calibrated to deliver 100 gpa at 2.5 mph. Two-tree plots were arranged in a RCB design and replicated four times. Tree spacing was 18 x 20 ft, with one buffer tree and one buffer row separating all plots. Regular maintenance applications of Sovran, COCS, Dithane, Polyram, Ambush, Vangard, Ziram, and Guthion were made separately to all treatments.