Good Fruit Grower

May 15

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Page 44 of 55 GOOD FRUIT GROWER MAY 15, 2014 45 "For now, growers, when purchasing plant material from any nursery, should ask what viruses the stock has been tested for," Rayapati said. "You need to ask if the planting stock has been tested for red blotch because it may not have been." Most importantly, if you find red leaves in your vine- yard, test for a full panel of diseases, not just leafroll. "It's like learning whether you have the flu or bronchitis," he said. "Both are bad, with similar symptoms, but have different treatments. You need to know what virus you have so you can better manage it." Red blotch has more impact on yield and fruit sugars compared to leafroll, so reducing cropping levels may be a tool that helps in managing the virus. "The new virus didn't just fall out of the sky last year," he said, noting that it was probably here for some time, but its slow movement helped the disease stay under the radar. • 1WT¿GNFU CTGRNCPVGF YKVJVJG OQUVRQRWNCT UGOKFYCTH CPFFYCTH XCTKGVKGU LIKE OUR ROOTSTOCK, our service will grow on you. ALL FRUIT TREE ROOTSTOCK IS OREGON CERTIFIED VIRUS FREE. M.7/M.26/M.9 EML A BUD 9 NIC ® 29 PAJAM 2 ® M.9 NAKB T-337 GENEVA ® 202/30/16/11 c a n b y , o r e g o n 5 0 3 - 2 6 3 - 6 4 0 5 T o l l F r e e 1 - 8 0 0 - 8 5 2 - 2 0 1 8 We also grow a great selection of rootstock varieties for apple, cherry, peach, pear and plum including: APPLE MALUS ANTONOVKA MALUS DOLGO MALUS DOMESTICA CHERRY PRUNUS AVIUM PRUNUS MAHALEB PRUNUS EML A COLT PEACH PRUNUS BESSEYI PRUNUS PERSICA 'LOVELL' PEAR OH X F 87/97/333/513 PYRUS CALLERYANA PYRUS COMMUNIS PYRUS USSURIENSIS PLUM PRUNUS CERASIFERA PRUNUS MARIANA PRUNUS MYROBAL AN PROVENCE QUINCE See our newly updated website, with all of our offerings & availabilities at w w w. w i l l a m e t t e n u r s e r i e s . c o m Inventories are low on many varieties. It's not too early to start thinking about next season. Let us know your needs so we can try to meet them for 2015. DOUBLE WEED BOOM VICTAIR TRAIL TANK PAC MULE 3-POINT WEED SPRAYERS • Wheel follows contour– sprays even width • Boom telescopes–hydraulic cylinder available • Single side model–spray complete row • Boom accommodates various nozzles for special jobs • Chemical mow • 50, 100, 150, 200 gallon stainless steel tank • Full-length mechanical agitation • Line strainer • Deluxe agitator packing gland • Stainless steel lid and strainer • Tractor-mounted pressure regulator and control valves • Tank mounted on rubber saddles • Choice of diaphragm pumps • Suction shut-off valve • Liquid level sight gauge • 200, 300, 400, 500 gallon stainless steel tank • Line strainer • Full-length mechanical agitation • Suction shut-off valve • Deluxe packing gland bearings • Choice of diaphragm pumps • Tractor-mounted pressure regular and control valves • Tank secured on rubber- mounted saddles • Tires available from narrow to wide widths Heavyweight Performance! Lightweight Price! Mistifier Phone: 509-248-0318 • FAX: 509-248-0914 • • A Cabernet Franc vine showing leafroll-like symptoms (green veins and interveinal reddening), but samples from this vine tested positive for grapevine red blotch-associated virus, though not leafroll virus. This is a typical example where symptom-based diagnosis can be misleading (due to overlap between leafroll and red blotch), and virus testing is needed to provide a reliable answer. PHOTO COURTEY OF WASHINGTON STATE UNIVERSITY

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