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Pecan Management Update 2012 Lenny Wells UGA Horticulture.

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Presentation on theme: "Pecan Management Update 2012 Lenny Wells UGA Horticulture."— Presentation transcript:

1 Pecan Management Update 2012 Lenny Wells UGA Horticulture

2 Foliar Sulfur Trial Leaf NitrogenLeaf Sulfur Chlorophyll Index 7-11-11 N:S Ratio Sulfur 1 qt/100 g2.72a0.20a43.6a13.6a Urea 4 lbs/100g2.58b0.18b42.0b14.1a Sulfur+Urea2.70ab0.19ab42.3ab14.0a Untreated2.73a0.20a41.4b13.7a

3 Foliar Sulfur Trial Percent Kernel Nut WeightCountN:S Ratio Sulfur 1 qt/100 g50.7a9.7a47.0b13.6a Urea 4 lbs/100g50.2a9.2b49.2a14.1a Sulfur+Urea50.2a9.5ab47.6b14.0a Untreated50.6a9.2b49.2a13.7a

4 Potential Added Value of Sulfur Sulfur has some level of disease suppression on many fungal plant pathogens SIR-Sulfur fertilization increased resistance against various fungal pathogens in many crops Sulfur effectively suppresses mite populations

5 Alion Herbicide (indaziflam)Pre-emergent herbicide Activated by rainfall/need good soil contact Affects actively growing root meristems Excellent residual weed control---6 months? – Grasses and broadleaves Two applications---Spring/Fall Trees must be 3 yrs old 5 oz/Acre – Max 10 oz/acre Resistance Management Tank Mix with burn-down herbicide and liquid N

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7 What happened to pecan quality in 2011? From Aug-1To Oct-31Total Precipitation [in] Number of Rainy Days 2011 12.3422 2010 6.1222 2009 12.7335 2008 18.8930 1961199010.00N/A 1971200010.12N/A Tifton From Aug-1To Oct-31Total Precipitation [in] Number of Rainy Days 2011 5.6521 2010 11.2322 2009 20.6941 2008 9.9524 1961199010.02N/A 1971200010.41N/A Jeffersonville

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9 Soil Depth & Water 9000 gallons 800 gallons 7 ft topsoil 45 day supply 7 in. topsoil 4 day supply TOPSOIL SUBSOIL

10 Pecan Irrigation Schedule MonthDrip (%cycle) (hrs/day) Sprinkler (inches/A/wk) April60 7.20.5 May70 8.4.75 June80 9.61 July90 10.81.25 August100 121.5 September100 121.5 October90 10.81 November60 7.20.5

11 Pecan Irrigation Schedule MonthDrip (%cycle) (hrs/day) Sprinkler (inches/A/wk) April60 7.20.5 May70 8.4.75 June80 9.61 July90 10.81.25 August100 121.5 September100 121.5 October90 10.81 November60 7.20.5

12 UGA Recommended Pecan Cultivars Low InputMedium InputHigh InputConditionalTrial AmlingCaddoDesirableCape FearByrd McMillan*Forkert*PawneeCreekZinner* Excel*OconeeKiowa*Lakota* Sumner*Mandan Elliott*Zinner Kanza* *Type II Morrill=44 nuts/lb; 65%; Oct. 3 Cunard=41 nuts/lb; 63%; Sept 24 Eclipse=

13 Pecan Info UGA pecan website: Google “UGA Pecan” Beginners Pecan Course: March 13, 2012 GPGA Conference: March 28, 2012

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