DiseaseUpdate04

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DISEASE UPDATE 04 Paul E. Bertrand: 

DISEASE UPDATE 04 Paul E. Bertrand

SPOTTED WILT: 

SPOTTED WILT TILLAGE TRANSPLANTS ADMIRE ACTIGARD

TILLAGE : 

TILLAGE FIELD WEEDS

WHEAT (GRASSES) AS A TSWV SOURCE: 

WHEAT (GRASSES) AS A TSWV SOURCE

WHEAT (GRASSES) AS A TSWV SOURCE: 

WHEAT (GRASSES) AS A TSWV SOURCE 1. MOST THRIPS LEAVING WHEAT ARE CEREAL THRIPS WHICH DO NOT TRANSMIT TSWV.

WHEAT (GRASSES) AS A TSWV SOURCE: 

WHEAT (GRASSES) AS A TSWV SOURCE 1. MOST THRIPS LEAVING WHEAT ARE CEREAL THRIPS WHICH DO NOT TRANSMIT TSWV. 2. WHEAT IS NOT A TSWV HOST.

TSWV: 

TSWV ACQUIRED FOR TRANSMISSION ONLY BY JUVENILES and ---

TSWV: 

TSWV NECESSARY JUVENILE STAGE EXISTS ONLY 12 - 15 HRS. so ---

TSWV: 

TSWV TO TRANSMIT TSWV LATER THRIPS MUST HATCH ON OR NEAR INFECTED PLANTS

WHEAT (GRASSES) AS A TSWV SOURCE: 

WHEAT (GRASSES) AS A TSWV SOURCE 1. MOST THRIPS LEAVING WHEAT ARE CEREAL THRIPS WHICH DO NOT TRANSMIT TSWV. 2. WHEAT IS NOT A TSWV HOST. 3. TOBACCO THRIPS HATCHED ON WHEAT HAVE NO OPPORTUNITY TO ACQUIRE TSWV.

Slide11: 

IN FIELD WEED MANAGEMENT

IN FIELD WEED MANAGEMENT: 

IN FIELD WEED MANAGEMENT CLEAN ROWS WEEDY ROWS WHEAT ROWS

IN FIELD WEED MANAGEMENT: 

IN FIELD WEED MANAGEMENT 2 ROW 4 ROW 8 ROW TOBACCO

Slide16: 

2004 EARLY WEEDS SUMNER: 42/90 ELISA+ GRINER: 58/90 ELISA+

EFFECT OF COVER ON SPOTTED WILT : 

EFFECT OF COVER ON SPOTTED WILT NEXT TO COVER

EFFECT OF COVER ON SPOTTED WILT : 

EFFECT OF COVER ON SPOTTED WILT NEXT TO COVER

EFFECT OF COVER ON SPOTTED WILT : 

EFFECT OF COVER ON SPOTTED WILT NEXT TO COVER

Slide20: 

WHEAT SUMNER: 0/90 ELISA+ GRINER: 0/90 ELISA+

Slide21: 

REDISTRIBUTION OF ADULT THRIPS FROM WHEAT ?

SUMNER FARM: 

SUMNER FARM ROW FROM COVER % TSWV

GRINER FARM: 

GRINER FARM ROW FROM COVER % TSWV

WHEAT (GRASSES) AS A TSWV SOURCE: 

WHEAT (GRASSES) AS A TSWV SOURCE 1. NOT A SOURCE but 2. CAN PLAY A ROLE

TILLAGE : 

TILLAGE STRIP TILL

Slide27: 

2001 -2003

RESULTS : 

RESULTS % TSWV but---

Slide29: 

2004 LITTER LEFT STANDING

Slide31: 

LAY BY LITTER CUT OUT 5 WEEKS POST TP

2004 RESULTS : 

2004 RESULTS % TSWV

HOUSE PLANTS vs BED PLANTS: 

HOUSE PLANTS vs BED PLANTS

Slide34: 

ARE THE PLANTS THEMSELVES DIFFERENT ?

HOUSE vs BED PLANTS: 

HOUSE vs BED PLANTS 9 SOURCES OF PLANTS COLLECTED THE SAME DAY GROWN AT 2 LOCATIONS SET THE SAME DAY ADMIRE 2.0 oz /1,000 (TPW)

2003 PLANT TRIAL RESULTS: 

2003 PLANT TRIAL RESULTS

INFECTED TRANSPLANTS: 

INFECTED TRANSPLANTS HOUSE 0 - 1 % 2/5 LOTS HAD ONE ELISA+ PLANT

INFECTED TRANSPLANTS: 

INFECTED TRANSPLANTS HOUSE 0 - 1 % BED 0 % 2/5 LOTS HAD ONE ELISA+ PLANT

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % TSWV

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % TSWV

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % STAND

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % STAND

EXPECTED RESULTS: 

EXPECTED RESULTS BETTER RESPONSE TO TPW ADMIRE WITH HOUSE PLANTS SOME STAND LOSS WITH BED PLANTS & TPW ADMIRE

UNEXPECTED RESULTS: 

UNEXPECTED RESULTS MORE INFECTED HOUSE PLANTS MORE TSWV WITH HOUSE PLANTS

2004 PLANT TRIAL RESULTS: 

2004 PLANT TRIAL RESULTS

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % TSWV

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % TSWV

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % STAND

EFFECT OF PLANT SOURCE: 

EFFECT OF PLANT SOURCE % STAND

2004 RESULTS SIMILAR TO 2003: 

2004 RESULTS SIMILAR TO 2003 MORE TSWV WITH HOUSE PLANTS BETTER RESPONSE TO TPW ADMIRE WITH HOUSE PLANTS SOME STAND LOSS WITH BED PLANTS & TPW ADMIRE

INFECTED TRANSPLANTS: 

INFECTED TRANSPLANTS HOUSE 1 - 4 96

INFECTED TRANSPLANTS: 

INFECTED TRANSPLANTS HOUSE 1 - 4 BED 0 - 6 96 96

2004 RESULTS: 

2004 RESULTS SIMILAR TSWV INFECTION IN BED AND HOUSE PLANTS NO CORRELATION BETWEEN ELISA+ TRANSPLANTS AND: STAND LOSS EARLY TSWV FINAL TSWV

ADMIRE: 

ADMIRE

Slide55: 

FLOAT HOUSES ~ 65 % OF PLANTS ADMIRE DRENCH TRT. ~ 90 % SUCCESS

Slide56: 

PLANT BEDS ~ 30 % OF PLANTS ADMIRE TPW TRT. ~ 55 % SUCCESS

ADMIRE: 

ADMIRE BOTH METHODS CONTROL LATER APHIDS

2004 APPLICATION OF PROVADO TO PLANT BEDS: 

2004 APPLICATION OF PROVADO TO PLANT BEDS

2004 TRIALS (4): 

2004 TRIALS (4)

Slide60: 

T-RAIL HOUSES ~ 5 % OF PLANTS ADMIRE DRENCH TRT. ~ 35 % SUCCESS

T-RAIL HOUSES: 

T-RAIL HOUSES IS IRRIGATION WASHING ADMIRE OUT OF TRAYS ?

2004 TRIALS (6): 

2004 TRIALS (6) NOT MUCH TREATMENT DIFFERENCE

ACTIGARD: : 

ACTIGARD: TRANSPLANT TREATMENT

ACTIGARD + ADMIRE: 

ACTIGARD + ADMIRE

ACTIGARD TREATMENT (HOUSE PLANTS): 

ACTIGARD TREATMENT (HOUSE PLANTS) 1.0 oz. / 100,000 PLANTS SPRAY ON 7 - 14 DAYS PRE TP SET IN PRE WETTED BEDS

ACTIGARD: : 

ACTIGARD: FIELD SPRAYS

2002 TRIALS (9): 

2002 TRIALS (9)

2002 RESULTS: 

2002 RESULTS FINAL % TSWV

2004 TRIALS (8): 

2004 TRIALS (8)

2004 TRIALS (8): 

2004 TRIALS (8)

2004 RESULTS: 

2004 RESULTS FINAL % TSWV

ACTIGARD FIELD SPRAYS: 

ACTIGARD FIELD SPRAYS NOT CONSISTANT (FARM TO FARM) 1 SPRAY INCREASED TSWV 5 SPRAYS WORK BEST: 0,7,14,21,28 DAYS POST T P $125 / Ac LAST 2 SPRAYS (21&28 DAYS) ?

Slide73: 

BLACK SHANK

BLACK SHANK : 

BLACK SHANK RACE 1 SITUATION

Slide75: 

BLACK SHANK RACE 1 DISASTER

NEW RACE 0 RESISTANCE IS BASED ON A SINGLE GENE : 

NEW RACE 0 RESISTANCE IS BASED ON A SINGLE GENE and ---

ALL HIGH RESISTANCE VARIETIES HAVE THIS GENE: 

ALL HIGH RESISTANCE VARIETIES HAVE THIS GENE NC-71 Sp G168 NC-72 Sp GH20 NC-297 etc.

CONTINUOUS PLANTING THESE VARIETIES WILL SELECT RACE 1: 

CONTINUOUS PLANTING THESE VARIETIES WILL SELECT RACE 1

BLACK SHANK RACE 1 : 

BLACK SHANK RACE 1 MAINTAIN OR INCREASE ROTATION TIME and --- ALTERNATE HIGH RES. WITH K-346

BLACK SHANK RACE 1 : 

BLACK SHANK RACE 1 MAINTAIN OR INCREASE ROTATION TIME and --- ALTERNATE HIGH RES. WITH K-346 and ---

USE RIDOMIL: 

USE RIDOMIL

2001 BROOKS CO. BLACK SHANK TRIAL : 

2001 BROOKS CO. BLACK SHANK TRIAL % BLACK SHANK

2001 BROOKS CO. BLACK SHANK TRIAL : 

2001 BROOKS CO. BLACK SHANK TRIAL % BLACK SHANK