Successfully reported this slideshow.

Citrus Greening Disease

1,783 views

Published on

Published in: Education, Technology, Business
  • BOOK-MARKED IT!.... STARTUPS...Send your pitchdeck to over 5700 of VC's and Angel's with just 1 click. Visit: Angelvisioninvestors.com
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Hello dear Ladies & Gentlemen of THE HUFFINGTON POST. We noticed by pure chance your article regarding Greening disease appeared on 04/22/2015. Nature BioLab & Enzymax36 Labs are Tunisian Research Laboratories in Agronomy. We study biological solutions to fight against dangerous diseases in high risk that attack plants. With us also in Tunisia, our citrus fruits have almost the same diseases as in yours, only we have many possibilities to stop them in time (Prevention better than cure). As Greening's disease has greatly affected your citrus since more than nine years till today, we have decided to contact you to inform you that we have really a biological remedy that could be very useful to you, so we are categorically formal that we have very great chance to exterminate this disease definitely of all your fields. For more details, we will be delighted to get back to you ASAP! Kind regards. Dr. Haj M'Hamed. A
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here

Citrus Greening Disease

  1. 1. Citrus Greening Disease• Found in FL in August 2005• Huanglongbing (HLB) – yellow shoot disease
  2. 2. HLB Tree vs Healthy Tree3/23/2012 2
  3. 3. Huanglongbing (HLB) background• The disease has been around since the 19th century• 1927: Psyllids were first linked to HLB and are the known vector for the disease• 1998: Asian citrus psyllid was discovered in Florida• 2005: HLB was confirmed in Florida• 2010: HLB was confirmed in all citrus-producing counties in Florida• The level of HLB infection varies widely in the state 3
  4. 4. The Challenges of HLB• Among most significant challenges to citrus worldwide• Few solutions available from beyond Florida• Significant research questions unanswered• HLB impacts are immediate• Clearly beyond the scope of the industry’s basal facility to organize, prioritize and fund (2005)
  5. 5. Greening Effects on Citrus Production• Overall tree decline, eventual tree death
  6. 6. Greening Effects on Citrus Production• Bitter-tasting, lopsided fruit, small in size• May not color properly with portions remaining green
  7. 7. Production Costs for a 10+-Year-Old Southwest Florida Processed Orange Grove Source: R.P. Muraro, UF, IFAS 2002-03 2009-10 2009-10 Without HLB- Without HLB & With HLB & Greening Black Spot Black Spot $/Acre % $/Acre % $/Acre %Weed Control & Herbicide 183.13 23.3 185.72 17.2 185.72 11.3Spray-Pesticide 137.18 17.4 169.10 15.6 482.93 29.4Fertilizer & Lime-Calcium 152.56 19.4 303.04 28.0 303.04 18.5Pruning/Topping 28.03 3.6 32.08 3.0 32.088 2.0Tree Removal/Resets 102.44 13.0 136.72 12.6 276.08 16.8Irrigation & Ditch Maintenance 184.16 23.3 224.77 20.8 243.17 13.7HLB Scouting Management& Canker Decontamination 0.00 0.0 29.85 2.8 137.09 8.4Total Production Costs 787.50 1,081.28 1,641.72
  8. 8. Asian citrus psyllid – Diaphorina citriFirst found in Florida June 1998
  9. 9. ASIAN CITRUS PSYLLID Adults • 3-4 mm in length • may live 30-60+ days • prefer to feed on new leaf flush when present • can survive long periods feeding on undersides of mature leaves • adults infected with HLB bacteria spread pathogen to healthy trees Eggs Psyllid nymphs • 0.3 mm in length• 5 nymphal (immature) stages • laid within unfurled leaves• range in size from 0.3 – 1.6 mm in length • use hand lens to observe• develop exclusively on young tender flush • eggs hatch within 3-5 days• nymphs are easily observed when populations areincreasing during periods of abundant new flush
  10. 10. Citrus Greening: The PathogenCandidatus Liberibacter asiaticus • Phloem-limited bacterium • Transmitted by psyllids • Graft transmissible • Not currently cultured
  11. 11. Hlb management guidelines• Guidelines are rigorous psyllid control & inoculum removal• What does it mean for the growers? – Routinely scouting for psyllids – Continuously scouting for symptoms of HLB – Pesticidal suppression of psyllids – Immediately removing trees confirmed to be infected 11
  12. 12. HLB Increasing Throughout the State October, 20052 counties
  13. 13. HLB Increasing Throughout the State April, 200612 counties
  14. 14. HLB Increasing Throughout the State January, 200714 counties
  15. 15. HLB Increasing Throughout the State June, 200724 counties
  16. 16. HLB Increasing Throughout the State February, 200830 counties
  17. 17. HLB Increasing Throughout the State August, 200832 counties
  18. 18. How Fast Does it Spread? Oct05-Mar06
  19. 19. How Fast Does it Spread? Apr06-Sep06
  20. 20. How Fast Does it Spread? Oct06-Mar07
  21. 21. How Fast Does it Spread? Apr07-Jul07
  22. 22. How Fast Does it Spread? Aug07-Oct07
  23. 23. SGC Groves – Disease Impact3/23/2012 23
  24. 24. SGC Groves – Disease Impact3/23/2012 24
  25. 25. SGC Groves – Disease Impact3/23/2012 25
  26. 26. SGC Groves – Disease Impact3/23/2012 26
  27. 27. Southern Gardens Citrus Groves - Disease Management3/23/2012 27
  28. 28. What We Know Today with HLB Management Growers must Maintain Low Incidence Rates • Inspection • Tree Removal • Psyllid Control • Clean Nursery Stock No Science to support any other practice3/23/2012 28
  29. 29. HLB Management Positive Trees • Positive HLB Trees Identified 2006 – 2011 = 598,000 • Positive HLB Trees Removed 2006-2011 = 429,000 • Southern Grove – 350,000 HLB Positive Trees Identified – 169,000 HLB Positive Trees Removed (Grove Sold to SFWMD) • Dunwody/Alcoma & Devil’s Garden Groves – 248,000 Positive HLB Trees Identified – 248,000 HLB Positive Trees Removed • Cumulative Infection Rate – All Groves = 24% – Dunwody/Alcoma & Devil’s Garden Groves = 23%3/23/2012 29
  30. 30. Why the urgency? Assumptions: Starting production 150M boxes/yr Starting trees 60 million Nursery capacity 3.5 M/yr Production loss 5%/year Starting infection 18% % of Nursery reached 55% Infection rate 1.25X per year3/23/2012 30
  31. 31. Why the urgency? Assumptions: Starting production 150M boxes/yr Starting trees 60 million Nursery capacity 3.5 M/yr Production loss 5%/year Starting infection 18% % of Nursery reached 55% Infection rate 1.25X per year3/23/2012 31
  32. 32. Aerial Applicator
  33. 33. Injection Applicator
  34. 34. Ground Airblast Sprayer
  35. 35. Low Volume Sprayer
  36. 36. Precision Spray Applicator
  37. 37. HLB Survey Crew
  38. 38. • Severely Infected Tree
  39. 39. • Solid Block Before HLB
  40. 40. • Same Block After Inoculum Removal
  41. 41. • Severely Infected Block
  42. 42. Aggressive Nutritional ProgramSerenade Max WP 2.25 lb/a $11.75/lb $26.44 Oxidate 2 qt/a $32.00/gal $16.00 14-7-8 w/Kphite 8 gal/a $8.05/gal $64.40Potassium Nitrate 8.5 lb/a $0.58/lb $4.93Manganese Sulfate 8.5 lb/a $0.91/lb $7.73Magnesium Sulfate 8.5 lb/a $0.29/lb $2.47 Zinc Sulfate 2.8 lb/a $0.92/lb $2.58Sodium Molybdate .85 oz/a $1.51/oz $1.28 Saver 1 qt/a $22.00/gal $5.50 $22.50 435 Oil 5 gal/a $4.50/gal Total Cost per Application $153.83 Total Annual Cost (4 x’s) $ 615.32
  43. 43. Increased Production Cost Due to HLBPSYLLID CONTROL Cost Per Acre Admire Injections 6 @ $15 $90.00 Additional Ground Sprays 2 @ $32 $64.00 Arial Sprays 5 @ $23 $115.00 Additional Insecticides 4 @ $10 $40.00TREE HEALTH Nutritionals $250 - $500 $375.00ROOT HEALTH Ridomil Applications 2 @ $45 $90.00HLB CONTROL Surveys 3 @ $25 $75.00 Tree Removal 3 @ $10 $30.00SUBTOTAL $879.00 Loss of Income Due to HLBTree Loss 5% $150.00Fruit Loss 2% $60.00SUBTOTAL $210.00Reduction of Income Per AcreDue to HLB $1,089.00
  44. 44. Questions / Discussion?

×