View Full Document

14 views

Unformatted text preview:

Table 4 Pythium Blight 2003 Location West Shore Country Club Grosse Ile MI Rating Scale Percent area infected pretreatment rating Rating Scale Quality 1 10 7 acceptable Pretreatment Rating Percent Area Quality Aug 13 2003 Aug 18 2003 Aug 18 Interval Treatment and Rate 1000 sq ft Days Mean LSD Mean LSD Mean Protect 4 oz Alude 5 5 oz 14 0 38 a 0 00 a 7 7 Banol 3 fl oz 14 0 25 a 0 08 a 8 0 Alude 6 5 oz 14 1 63 a 0 17 a 7 7 Spectro 5 oz Alude 5 5 oz 14 1 44 a 0 17 a 7 0 Vital Sign 6 fl oz Junction 2 fl oz 14 0 69 a 0 25 a 6 3 Vital Sign 6 fl oz 14 0 31 a 1 67 ab 7 0 Heritage 0 2 oz 14 1 25 a 5 67 b 6 7 Control 0 38 a 12 33 c 6 0 Treatment means followed by the same letter are not significantly different LSD 5 Slight phytotoxicity observed Anthracnose Colletotrichum graminicola Curative Study A curative crown rot anthracnose study was set up on an annual bluegrass green at the Hancock Turfgrass Research Center in E Lansing MI It was mowed at 0 130 The design was a randomized complete block with 4 replicates of each treatment Plots were 6 x 6 Treatments were applied using a CO2 backpack sprayer with a double 8002E flat fan TeeJet nozzle boom at 100 GPA and 36 PSI Plots were fertilized at about 1 4 N 1000 ft2 month Treatments were applied beginning on 2 July with subsequent applications of the 14 day treatments on 17 July and 29 July Re application of the 21 day treatment was made on 23 July and reapplication of the 28 day treatment was made on 29 July Plots were rated for percent area with crown rot anthracnose Data are shown in Table 7 and represent the percent plot area with anthracnose Data were analyzed using ANOVA and means were separated with LSD p 0 05 As can be seen in Table 7 many treatments provided significant disease control compared to the untreated control plots including Banner Maxx Spectro Alude Heritage Banner Maxx Medallion Clearys 3336F Insignia Propiconazole Pro several Andersons prototypes Lesco T Storm and Clearys 3336 Alude No phytotoxicity was observed in this study this year 12 Table 7 Crown Rot Anthracnose Curative Study Location Hancock Turfgrass Research Center E Lansing MI Rating Date August 9 2003 Rating Scale Mean percent area infected with anthracnose Treatment and Rate 1000 sq ft Banner Maxx 2 fl oz Spectro 4 oz Alude 5 5 fl oz Insignia 20WG 0 5 oz Propiconazole Pro 1 3MC 1 fl oz Heritage 0 4 oz Banner Maxx 1 fl oz Medallion 0 25 oz AND3125 4 lb AND3127 4 lb Insignia 20WG 0 5 oz Subdue Maxx 0 5 fl oz Cl 3336 4 oz Dac Ultrex 3 2 oz Clearys 3336 4 oz Daconil Ultrex 1 8 oz Subdue Maxx 1 fl oz Medallion 0 25 oz Dac Ultrex 3 2 oz Clearys 3336 Flo 4 fl oz Spectro 4 oz Lesco T Storm 3 55 fl oz AND3126 4 lb Daconil Ultrex 3 2 oz Banner Maxx 1 fl oz AND3124 4 lb Heritage 0 2 oz Medallion 0 5 oz Endorse 6 oz Clearys 3336 4 oz Alude 5 5 fl oz Daconil Ultrex 3 25 oz alt EcoGuard 20 fl oz Endorse 4 oz CJB EXP 0214 2 fl oz Endorse 4 oz Alude 5 5 fl oz Medallion 0 25 oz Medallion 0 33 oz EcoGuard 20 fl oz EcoGuard 20 fl oz alt Daconil Ultrex 3 25 oz Daconil Ultrex 3 2 oz Control a b Interval Days 14 14 14 28 14 14 14 14 2 Jul 17 Jul 29 Jul 14 14 14 14 14 14 14 14 14 14 14 14 21 14 14 14 14 14 14 I 1 7 1 7 5 7 5 5 7 7 II 0 5 5 1 1 7 5 15 5 5 III 1 2 5 5 5 10 10 2 1 1 IV Mean 5 1 8 3 4 3 7 4 5 7 5 0 10 5 3 5 7 3 10 7 5 10 8 0 20 8 3 20 8 3 LSDa i hi hi g i g i g i e i e i e i e i 25 20 15 10 2 5 10 10 25 5 10 10 25 25 25 25 30 50 30 15 7 1 5 15 5 5 5 7 7 3 15 20 10 15 15 20 15 5 15 20 2 10 2 2 20 20 10 10 20 5 5 7 10 15 15 25 15 10 15 50 2 5 15 10 15 15 20 30 10 50 35 30 25 20 20 5 25 35 50 35 d i d i d i d i d i d i d i c i b h b h b h b h a g a f a f a f a d a c ab a 9 0 9 0 9 3 9 3 10 5 11 3 11 3 14 3 15 5 15 8 16 3 16 8 17 5 18 8 18 8 18 8 21 3 25 0 27 5 30 0 Means followed by the same letter do not significantly differ LSD p 0 05 Treatment applied on 21 July and 29 July only 13


Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Formula Sheet and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Formula Sheet and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?