MH Free Tobacco

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MH Free Tobacco
Trials were conducted in Jessamine County to
study the mechanical application of sucker
control chemicals that do not contain Maleic
Hydrazide. Although initial results were
encouraging, none of the treatments provide
acceptable control in the end. Control has been
well documented with methods that run Butralin,
Flupro or Prime down the stalk. However, such
methods are slower and labor intensive and not
likely to be adopted by larger growers.
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Spraying with Coarse Nozzles
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MH Free Tobacco Trial
Location Day Treatment Boom Nozzle Drought Sucker Control Comments
Home 16 Prime Straight TG-3 Low Fair-Poor Two - Three 4-7" suckers in 1/2 of plants in top
Dodd 16 Butralin Straight TG-3 Moderate Good Occasional 4-7" sucker
Dodd 16 Prime Straight TG-3 Moderate Good Occasional 4-7" sucker
Dodd 16 Butralin 3 nozzle TG-35 Low-Mod Excellent Few suckers
Dodd 16 Prime Straight TG-3 Moderate Good Occasional 4-7" sucker
Creek 9 Prime Straight TG-5 Mod-High Good Occasional 4-7" sucker
By-Pass 15 FA Flupro Straight TG-5 0-Low Poor Two 5-9" in tops of most plants
By-Pass 15 Prime Straight TG-5 0-Low Poor Three or more suckers in tops of most plants
Shop 14 Prime Straight TG-5 0-Low Fair Two - Three 5-9" suckers in 1/3 of plants in top
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2005 Burley Tobacco Sucker Control Trial UKREC,
Princeton, KY

• Andy Bailey
• Extension Tobacco Specialist
• Univ. of KY / Univ. of TN

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Sucker Control Trial for Burley TobaccoUKREC,
Princeton, KY - 2005

• Treatments
• Untreated check (TNS)
• Royal MH-30 (2 gal/A)
• Royal MH-30 (1.5 gal/A)
• Royal MH-30 (1.5 gal) Butralin (0.5 gal)
• Royal MH-30 (1.5 gal) Flupro (0.5 gal)
• Royal MH-30 (1 gal) Butralin (0.5 gal) Royal
  Tac M (2 gal)
• Royal MH-30 (1 gal) Flupro (0.5 gal) Royal
  Tac M (2 gal)
• Butralin (0.5 gal)
• Flupro (0.5 gal)

• TN 90 burley
• Set May 25, 2005
• 40 x 32 plant spacing
• 4900 plants/A
• 1st topping July 26
• Uneven, so Royal Tac M applied at 2 gal/A down
  the stalk to topped plants in all plots
• 2nd and final topping July 31
• All treatments applied Aug. 5
• Over-the-top straight boom coarse spray with TG-5
  nozzles, 20 spacing, 50 GPA

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Sucker Control Trial for Burley TobaccoUKREC,
Princeton, KY - 2005

• RCBD design with 4 replications
• Plots 4-rows, 40 ft. long (60 plants/plot)
• All data collected from center 2 rows
• 30 plants/plot
• Data collected
• Sucker control 4.5 wks after topping (just
  prior to harvest)
• Visual sucker control
• Green sucker weight
• 30 plants per plot on trts 2-9
• 6 plants per plot on trt 1 (TNS), extrapolated
  for 30 plants
• Cured leaf yield (4 stalk positions)
• Grade Index and Revenue (based on 2004 grade and
  price support)

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Sucker Control 4.5 wks after toppingUKREC,
Princeton, KY - 2005
Treatment Rate/A Visual Control Sucker wt./ 30 pl
(gal/A) ------------ Lbs/30 plants
TNS 0 0 d 220 a
Royal MH-30 2 gal 72 a 22 c
Royal MH-30 1.5 gal 60 b 29 c
Royal MHButralin 1.5 0.5 66 ab 30 c
Royal MH Flupro 1.5 0.5 64 ab 21 c
Royal MHButralin Royal Tac M 1.0 0.5 2 62 b 41 ab
Royal MHFlupro Royal Tac M 1.0 0.5 2 58 b 34 bc
Butralin 0.5 44 c 59 b
Flupro 0.5 40 c 59 b
LSD(0.05) 8 28
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Burley Tobacco YieldUKREC, Princeton, KY - 2005
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Burley Grade Index and RevenueUKREC, Princeton,
KY 2005Grade Index and Revenue based on 2004
federal grade and support price for Type 31
burley tobacco.