Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Artichoke physiological disorders By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Islamabad

631 views

Published on

Artichoke physiological disorders By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Islamabad

Published in: Education
  • Be the first to comment

Artichoke physiological disorders By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Islamabad

  1. 1. Artichoke Physiological Disorders ToT to FFS Staff By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL
  2. 2. Introduction  Globe artichoke (Cynara scolymus L.) is an herbaceous perennial that is grown for its tender, edible, immature flower buds. The globe artichoke should not be confused with Jerusalem artichoke, another member of the composite family native to North America, which is grown for its fleshy tubers. Globe artichoke plants can become large: four to five feet tall and wide, with long, heavily serrated silvery green leaves
  3. 3. History  Globe artichokes are native to the Mediterranean region, but have been grown in this country since colonial times. Thomas Jefferson grew artichokes in his extensive food gardens at his central Virginia Monticello plantation as early as 1767, successfully overwintering the plants using protective coverings. In 2013, over 7,000 acres of artichokes were grown commercially in California’s central coast area. The mild West Coast climate allows year-round perennial culture and quality
  4. 4. Freezing Injury.  Freezing injury will be initiated at -1.2°C (29.9°F). Symptoms of light freezing injury are blistering of the cuticle and a bronzing of the outer bracts. This may occur in the field with winter harvested buds and is used in marketing as an index of high quality. More severe freeze injury results in watersoaked bracts and the heart becoming brown to black and gelatinous in appearance over time.
  5. 5. Bruising and Compression Injury.  Very common when attention to careful harvest and handling practices are not followed.
  6. 6. Responses to Controlled Atmospheres  Controlled or modified atmospheres offer moderate to little benefit to sustaining artichoke quality. Conditions of 2-3% O2 and 3-5% CO2 delay discoloration of bracts and the onset of decay by a few days at temperatures around 5°C (41°F). Atmospheres below 2% O2 may result in internal blackening of artichokes.

×