logo
  • Home
  • About
  • Crops
  • Resources
  • Services
  • Media and Communication
    • Blog and News
    • Videos
  • Contact
  • En
    • En
    • ਪੰ
Register
logo
logo
  • +1 (559) 412-2307
  • info@paggusa.com

Post-harvest and Dormant Season IPM Activities for Almonds and Pistachios By Gurreet Brar, Ph.D

  • Paggusa
  • No Comments
  • January 5, 2021

Integrated Pest Management for Almonds

  • Monitoring-based program to reduce pesticides and water quality issues
  • Involvement in orchard by the grower is a must
  • 5 different periods of growth:
    – Dormant Season
    – Bloom to Post-bloom
    – Fruit Development
    – Harvest
    – Postharvest

Integrated Pest Management for Almonds

  • Post-harvest: Harvest to onset of dormancy
  • Dormancy- Period of time from leaf fall until leaf out in the spring
    – December 1st until buds begin to grow, around February 1st, or so.
  • Delayed Dormancy – Period of time of resumption of growth, indicated by bud swell until green tip.

Post Harvest & Dormant season IPM

  • Disease management
  • Insect pest management
  • Vertebrate pests
  • Weed management

Fall monitoring: Almond Rust

  • Rust appears as small, yellow spots on the upper surface of leaves.
  • On the lower surface, spots are rusty red
  • Rust-colored spores erupt through the surface.

 

 

 

 

Rust Management in Fall

As per UCIPM: Apply zinc sulfate (20-40lb/acre) in late October to early November to hasten leaf fall. Otherwise, the inoculum may build up, overwinter on the trees, and infect leaves the following spring.

Fall monitoring: Shot Hole

  • Monitor orchards in fall for shot hole lesions and fruiting structures.
  • Appear after rain, seen with hand lens.
  • If fruiting structures are present, Apply zinc sulfate (20-40lb/acre) in late October to early November to hasten leaf fall.

 

 

 

 

 

Fall monitoring: Armillaria Root Rot
(Oak Root Fungus)

  • Mushrooms at the base of trunk after rain events in fall
  • White mycelial mats at or below ground
  • Fumigation?
  • Cultural Management

 

 

 

 

 

 

 

Dormant Spur Sampling of Almonds
Sampling is used to determine the need for a dormant treatment

  • Sampling is done once between mid- November and January
  • Extensive and time consuming
  • May reduce operating cost
  • Removes dormant application of Organophosphates

 

 

 

 

 

 

 

Dormant Spur Sampling of Almonds

  • Insect Pest
    – Mite Eggs (Brown, European Red)
    – San Jose Scale
    – European Fruit Lecanium
  • Insect Predators
    – Parasitized scale
    – Parasitized EFL

 

 

 

How to sample

  • 35 to 50 trees from each orchard
  • Selecting major scaffolds randomly, clip 2 to 3 spurs or twigs from inside the canopy (~total 100)
  • Clip the spur off at the base, making sure to include some old spur wood along with last year’s growth
  • Using a hand lens, examine 20 of the spurs for scales, mite eggs, and scab lesions, at a time.

Dormant Spur Sampling of Almonds

Pest Threshold Treatment
San Jose Scale Below 20%

20%–60%

Over 60%

No Spray

Oil at 6–8 gals/acre Oil with insect growth regulator

European Fruit Lecanium Below 20%

20% and above

No spray Oil only
Overwintering Mite Eggs (European red or brown mite) Below 20%

20% and above

No spray Oil only
Scab Below 10%

10% and above

No spray Copper/oil or chlorothalonil/oil

Dormant Spur Sampling of Almonds

Almond Scab
Scab lesions on twigs serve as overwintering sites for the fungus

Mummy nut removal

  • Mummy monitoring and nut removal
    • Examine 20 trees per block.
    • If an average of 2 or more mummies per tree are found before February 1, remove mummies by shaking or hand poling the entire block.
    • Destroy mummies on the ground by either disking or mowing by March 15.

Pistachios Orchard sanitation

  • Sanitation also reduces inoculum for
    • Botryosphaeria panicle & shoot blight
    • Botrytis blossom & shoot blight
    • Overwintering leaffooted bug

  • Botryosphaeria panicle & shoot blight
  • Severe winter pruning
  • Burn the prunings outside the orchard
  • Infected wood spreads disease via rain splashes

 

 

 

 

 

 

Symptoms Of Spring

Killing buds for next year’s crop

Monitoring for diseases

  • BUDMON test
    • Dormant Bud Sampling
    • February to Mid-March
    • Specially if pressure was high last year
    • Infected parts can spread infection for 6 years

 

 

 

 

Botrytis blossom & shoot blight

  • More severe in male
  • Beige/buff colored powdery spores at the base of shoots
  • Starts from infected buds and bud scales
  • Prune the blighted shoots

 

 

 

 

 

 

Sampling for nematodes

  • Now is a good time to sample soil for nematode analysis
  • Soil should have optimum moisture
  • Make a composite sample from at least 5 locations in the block.
  • Discard top one foot of soil and sample from the second foot depth, within the root zone
  • Make sure you collect roots along with the soil

Vertebrate pests

Pocket gophers

  • Mound building activity peaks in fall & spring
  • Crescent shaped mounds at burrow opening

 

 

 

 

Vole Damage:

  • Physical damage to tree and roots at or slightly above/below soil line
  • They like grass/vegetation

 

  • Tags:

  • Share:

About

Transform farming to meet challenges of the present time by empowering farmers with knowledge of services & resources from governments, educational institutions.

Menu

  • About Us
  • Crops
  • Resources
  • Services
  • Blogs

Useful Links

  • Contact Us
  • Register
  • Privacy Policy
  • Cookie Policy
  • Term & Conditions

Contact

  • +1 (559) 412-2307

  • info@paggusa.com

  • Fresno, California, United States

Copyright © 2024 Punjabi American Growers Group, All rights reserved

  • Powered by Impeccable Technology Solutions Inc.

ਸਾਡੇ ਬਾਰੇ

ਸਰਕਾਰਾਂ, ਵਿਦਿਅਕ ਸੰਸਥਾਵਾਂ ਤੋਂ ਸੇਵਾਵਾਂ ਅਤੇ ਸਰੋਤਾਂ ਦੇ ਗਿਆਨ ਨਾਲ ਕਿਸਾਨਾਂ ਨੂੰ ਸ਼ਕਤੀ ਪ੍ਰਦਾਨ ਕਰਕੇ ਮੌਜੂਦਾ ਸਮੇਂ ਦੀਆਂ ਚੁਣੌਤੀਆਂ ਦਾ ਸਾਹਮਣਾ ਕਰਨ ਲਈ ਖੇਤੀ ਨੂੰ ਬਦਲੋ।

  • ਸਾਡੇ ਬਾਰੇ
  • ਫਸਲਾਂ
  • ਸਰੋਤ
  • ਸੇਵਾਵਾਂ
  • ਖਬਰ ਅਤੇ ਲੇਖ

  • ਸੰਪਰਕ ਕਰੋ
  • ਰਜਿਸਟਰ
  • ਪਰਾਈਵੇਟ ਨੀਤੀ
  • ਕੂਕੀ ਨੀਤੀ
  • ਨਿਯਮ ਅਤੇ ਸ਼ਰਤਾਂ

ਸੰਪਰਕ ਕਰੋ

  • +1 (559) 412-2307

  • info@paggusa.com

  • ਫਰੈਜ਼ਨੋ, ਕੈਲੇਫੌਰਨੀਆ, ਸੰਯੁਕਤ ਰਾਜ

ਕਾਪੀਰਾਈਟ © 2024 ਪੰਜਾਬੀ ਅਮਰੀਕਨ ਗ੍ਰੋਅਰਜ਼ ਗਰੁੱਪ, ਸਾਰੇ ਅਧਿਕਾਰ ਰਾਖਵੇਂ ਹਨ

  • ਇਮਪੇਕੇਬਲ ਟੈਕਨਾਲੋਜੀ ਸੋਲਿਊਸ਼ਨਜ਼ ਇੰਕ ਦੁਆਰਾ ਸੰਚਾਲਿਤ