WCN Dec e

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Larvae can overwinter in mummies left on almond trees after harvest (photo by V. Boyd.) The lack of availability and increasing cost of polling crews have prompted many growers to rely solely on mechanical mummy removal (photo by V. Boyd.) Continued from Page 9 definitely pyrethroid resistance,” he said. Application timing is critical as the hulls split and the nuts become susceptible to NOW egg laying. Machado said growers should time hull split sprays based on the crop stage, not the moth flight. Where they may get into trouble is not noticing the nuts in the tree tops that typically split before those at eye level. “They need to be watching the tops of the trees, whether that’s with a pruning tower or long hook,” Machado said. “If you look where the nuts are in the canopy, they’re in the tops of the trees.” “Timely” Harvest While some talk about an early harvest to possibly avoid the third NOW flight, Machado prefers the term “timely harvest.” “What’s the goal?” he asked. Is the crop going for meats or for in-shell, since the two end uses prompt different harvest timing. Even then, it’s a balancing act. Ideally for the meat market, Extension recommends shaking when 100% of the nuts are one-half to two-thirds of the way split and the hull is still green, known as stage “d.” With some varieties, growers have found that harvesting at stage “c,” when the hull split is 0.25 to 0.5 inch, allows for a cleaner shake. Harvest significantly earlier, and resulting higher moisture levels will mean the nuts have to sit on the ground longer to dry. This makes them potentially susceptible to additional ant damage, Machado said. Going too early also may mean the brown kernel skin hasn’t set adequately, and you get more “peelers.” On the other hand, if you let the nuts dry for a prolonged period on the tree, you expose them to an increased egg laying potential from the third NOW flight. The hulls also cup and become tough, making them more difficult to remove. For the in-shell market, Machado said growers should wait until the hulls butterfly before they harvest. Leaving the nuts on the tree longer also exposes them potentially to more NOW egg laying. If the orchard was managed with high fertility, toxins from hull rot also could build up with later harvest, creating more stick-tights. To determine how well their NOW program worked during the season, Rijal said growers shouldn’t just rely on handlers’ grade sheets. In addition, they should collect field samples at harvest because up to half of damaged nuts are left in the orchard and aren’t reflected in the reports. “Take multiple samples of 500 to 1,000 nuts representing the orchard and crack the nuts out,” he said. “It helps to know what’s going on and also look at the history of the orchard.” Comments about this article? We want to hear from you. Feel free to email us at article@jcsmarketinginc.com 10 West Coast Nut <strong>Dec</strong>ember 2021
TOP QUALITY NUT TREES BEST CLONAL HYBRID ROOTSTOCKS ASK ABOUT FALL 2021 INVENTORY EXPERIENCED ONSITE FIELD SERVICE TO HELP YOU AT EVERY STEP ALMONDS WALNUTS PISTACHIOS CONTACT YOUR LOCAL FIELD REPRESENTATIVE PAUL SMITH Butte, Glenn, Tehama & Shasta (530) 517-9338 paul@sgtrees.com BOB FURMIDGE Yuba, Sutter, Colusa, Yolo, Solano, Sacramento & Placer (530) 755-7139 • bob@sgtrees.com RANDY FASANI San Joaquin, Stanislaus, Merced & Madera | (209) 988-7333 randy@sgtrees.com JOSH BERGMAN Fresno, Kings, Tulare & Kern (559) 260-6551 josh@sgtrees.com MATTHEW “BUBBA” HADDON Fresno, Kings, Tulare & Kern (661) 747-3967 • matthew@sgtrees.com Sierra Gold Nurseries • (530) 674-1145 • sgtrees.com
Page 1: WEST COAST NUT Your DECEMBER 2021 I
Page 4 and 5: ADVANCED HAWKEYE INFRARED SORTING T
Page 6 and 7: Navel Orangeworm Rejects on the Ris
Page 8 and 9: Continued from Page 6 Make timely h
Page 12 and 13: View from the Top ‘The Role of th
Page 14 and 15: Continued from Page 13 Q: What are
Page 16 and 17: Planning for Nitrogen Efficiency fo
Page 18 and 19: Continued from Page 17 The sheer to
Page 20 and 21: CARB Updating Regulations for Truck
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Page 24 and 25: WEIGHING IN ON ALMOND PROFITABILITY
Page 26 and 27: RBICIDE EC EC FOR ORGANIC FOR ORGAN
Page 28 and 29: RESTORING SOIL HEALTH AND ECOSYSTEM
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Page 32 and 33: Continued from Page 32 Further rese
Page 34 and 35: WINTER PREP IN WALNUTS Start Thinki
Page 36 and 37: Continued from Page 35 When samplin
Page 38 and 39: TIPS FOR FINANCIAL PLANNING THROUGH
Page 40 and 41: Jeff Bowman at Grimbleby Coleman CP
Page 42 and 43: Almond Pollination 2022: Economic O
Page 44: Average Colony Strength Requirement
Page 47 and 48: The grower agrees to… No pesticid
Page 49 and 50: Omar Navarro 559-470-4910 onavarro@
Page 51 and 52: Fit: Ideal for new plantings. A pre
Page 53 and 54: tors to their crops and our ecosyst
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In conjunction with REGISTER AT wcn
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after harvest. Stored at 35 degrees
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Continued from Page 64 some growers
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What It Could Mean for Californians
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Interested in organic articles? SUB
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Continued from Page 71 Fillmore sai
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A WORD FROM THE BOARD: THE CALIFORN
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JOSEPH JACKSON ON “DOING WHAT MAT
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California Legislative Recap for 20
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Continued from Page 78 and maintain
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APC’s newly-introduced quarterly
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GET AHEAD OF FIRE ANTS TREAT NOW WI
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There are two main ant pests in alm
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West Coast Nut is excited to collab
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DAY 2 CE TRACK WORKSHOPS 8:00 AM 8:
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WCN Dec e

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