WCN February 2020 Web

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How to Maximize Almond Yields By CECILIA PARSONS | Editor Almond Yields Maximizing almond yield potential in both the long and short term requires understanding pomological concepts. Research updates presented at The Almond Conference provided growers with those concepts—keys for a successful relationship with their trees with Robert Weaver Scott Lecrone 559-977-2563 559-470-7328 www.bioagservicescorp.com the goal of achieving high sustainable yields. Intercepting the maximum amount of light by the maximum number of trees per acre will determine yield potential, said Roger Duncan, University of California (UC) Agriculture and Natural Resources (ANR) advisor in San Joaquin County. The reality of production, he pointed out, is that many Independent Consultants since 1975 We Are Wholesale Distributors of Fish Protein, Both Liquid and Dry Certified Products Fish Protein 10.5-0-0 Fish Protein XL Liquid 6-1-1 Ocean Organics Concentrated Kelp 0-0-6 Soil Food Organic 1.5-1.5-2.5 Microbe Food Large Volume Available Prices well below competitors orchards have a range of soil variability, missing trees and other factors that can affect their yield potential. Light Interception Bruce Lampinen, UC Davis, who is known for his work in determining light interception in orchards, correlates almond production with light interception or photosynthetically active radiation (PAR). His studies show that in well managed orchards production increases by 50 kernel pounds for every percent light interception after about five years of age. At 50 percent light interception the orchard has the potential to produce 2500 kernel pounds per acre. At 80 percent the potential for 4,000 kernel pounds is reached. Lampinen said above 80 percent is not recommended due to food safety concerns Pruning and within tree row spacing also influences yield potential, Duncan said. High Density Plantings A pruning and spacing trial he conducted in Stanislaus County showed that the closer the in-row tree spacing, the higher light interception. Light interception tended to peak at year 11 at all in-row tree spacings. Duncan also looked at super high density plantings on dwarf rootstock, which is one of the considerations for off-ground harvest. Duncan compared spacing at 18 by 21 feet with five by 11 feet spacing and determined the tighter planted trees PAR at mid day was 44 percent compared to 83 percent for the 18 x 21 planting. Yield potential for the higher density block was 2200 with an actual yield of 1,324 kernel pounds per acre. Continued on Page 32 30 West Coast Nut February 2020
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Page 4 and 5: Clearing the Water on the Biologica
Page 6 and 7: Blossoms - Almond blossoms bring th
Page 8 and 9: The Future of Off-Ground Harvest By
Page 10 and 11: Continued from Page 8 for an increa
Page 12 and 13: Choosing, Planting and Pruning Haze
Page 14 and 15: Continued from Page 13 is measured
Page 16 and 17: Farm Advisor Spotlight: Luke Millir
Page 18 and 19: Farm Advisor Spotlight: Franz Niede
Page 20 and 21: What It Wants, When It Wants It: On
Page 22 and 23: Continued from Page 20 After gradua
Page 24 and 25: (Untreated): Merritt’s almond tri
Page 26 and 27: Organic Walnuts By CECILIA PARSONS
Page 28 and 29: Continued from Page 26 substances u
Page 32 and 33: Continued from Page 30 The 18 x 21
Page 34 and 35: Hull Rot and Ganoderma Root Rot in
Page 36 and 37: Continued from Page 34 protection a
Page 38 and 39: Whole Orchard Recycling Cover Crops
Page 40 and 41: Continued from Page 38 crop and the
Page 42 and 43: What's New in Pollination By CECILI
Page 44 and 45: Enforcement of Safety Programs By R
Page 46 and 47: Continued from Page 44 business, on
Page 48 and 49: Safety During the Winter Months By
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Page 52 and 53: FOLIAR NUTRITION By RICH KREPS | CC
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Page 56 and 57: Trunk and Scaffold Canker Diseases
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Page 60 and 61: BeeWhere By GLENN FANKHAUSER | Kern
Page 62 and 63: A WORD FROM THE BOARD: THE ALMOND B
Page 64 and 65: Continued from Page 62 Facing Down
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Page 68 and 69: Pecan Harvest By JULIE R. JOHNSON |
Page 70 and 71: Continued from Page 69 can sit on t
Page 72 and 73: The Evolution of the California Wal
Page 74 and 75: Continued from Page 72 established.
Page 76: PHEROCON ® NOW PPO-HR L 2 + ® MO

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