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The Cost of Producing Pecans---Can We Grow Them for Less?. Lenny Wells, University of Georgia Department of Horticulture, Tifton, GA. Variable Costs Per Acre: Full Production, 2008. Unit Quant. Price/Unit Total/A Lime 1 ton/A $30 $30 N 150 lbs $1.00 $150
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The Cost of Producing Pecans---Can We Grow Them for Less? Lenny Wells, University of Georgia Department of Horticulture, Tifton, GA
Variable Costs Per Acre: Full Production, 2008 Unit Quant. Price/Unit Total/A Lime 1 ton/A $30 $30 N 150 lbs $1.00 $150 P 40 lbs $0.73 $29.20 K 60 lbs $0.83 $49.98 Zn Sulfate 50 lbs $0.8 $40 Foliar Zn 3 Appl. $2.00 $6.00 Foliar B 3 Appl. $1.30 $3.90 Fungicides 8 Appl.* $9.89 $79.12 Herbicides 4 Appl $29.25 $117 Insecticides 10 $14.41 $144.16 Fuel Gal 33 Gal $4.33 $142.89 Irrigation Operation $50 Irrigation Repairs $20 Equipment Repairs & Maint. $30.91 Labor 25 8 $200 Interest 1093.16 8% $87.45 Harvest $354.2 2008 Total Variable Costs $1534.81
Pecan Returns *average price from 2005-2007
How Can We Reduce the Cost of Production? • Increase N use efficiency • Reduce number of trips over the orchard
Why Do you have a herbicide strip? • 40 X 40 • 12 foot wide herbicide strip: • 12/40 = 30% • Can reduce area that you apply • fertilizer to by 70% with • band application • At a rate of 75 lbs per acre: • 100 acres X 75 = 7500 lbs N • 7500 X 30% = 2250 lbs N
Effect of N Application Method on ‘Stuart’ Pecan----Year 1 N rate for all treatments = 70 lbs/acre Return per acre based on $2.71 per point (Yield/acre x 2.71) X % kernel = $/acre $/acre-total n cost = return 28-0-0-5 Liquid Fertilizer) used for Injection and Herbicide Sprayer Applications; Cost = $500/ton Ammonium Nitrate used for broadcast band and broadcast applications; Cost = $495/ton
Effect of Poultry Litter and Clover on ‘Desirable’ Pecan---Year 1 Return per acre based on $3.02 per point (Yield/acre x 3.02) X % kernel = $/acre $/acre-total n cost = return Litter Analysis = 75 lbs N; 30 lbs K; 16 lbs P; 0.44 lbs Zn
Foliar Urea • Feed Grade Urea = 4 lbs/100 gallons • Liquid Urea (23%) = 1 gallon/100 gallons • DO NOT USE BIURET UREA • Urea moves out of the leaf quickly to storage tissues • Unless leaf N is deficient, you probably won’t see an increase in leaf N
Increasing N-use Efficiency • Reduce area of N application • Use poultry litter if available • Plant clover • Apply foliar Urea
Chem Mowing Costs Monte Nesbitt, Auburn University Labor = $7.50/hr Diesel $4.00/gal Spray application cost = $3.34 Glyphosate cost = $38.00/gal Mowing cost per acre = $13.92/acre