Value of Timely Digging and Impact Numbers

— Written By

Here is something you might want to use for impacts relative to digging dates. I am using about 10% for one week early and you may want to move that down to 5% if you are helping someone decide to dig within a few days of optimum maturity. I think the following chart is reasonable. The data are probably not this clean but this is an estimate. Note that a week does make a lot of difference. Depending upon yield potential, this could cover the entire fungicide bill at $700 per ton. If these are extra peanuts above a contract the price could approach $1000 per ton.

Percent yield increase from timely digging Days between digging and optimum maturity projection Economic value ($/acre) gained by digging on time at a peanut price of $0.35/lb ($700/ton) 
    Peanut yield (lbs/acre)

3000 

3500 

4000 

4500 

5000 

2.5

2

26

31

35

39

44

5.0

4

53

61

70

79

88

7.5

6

79

92

105

118

131

10.0

8

105

123

140

158

175

12.5

10

131

153

175

197

219

15.0

12

158

184

210

236

263

This is an impact statement I sent to someone last year

Issue:

Timely digging of peanut pods is important in optimizing peanut yield and economic value. Digging peanut one week prior to or one week following optimum digging can decrease yield by 10%. Assisting peanut growers and their advisors in making this decision is an important research and extension activity at North Carolina State University.

What Has Been Done:

North Carolina State University, with support of the North Carolina Peanut Growers Association, Cooperative Extension field faculty, and peanut farmers, has developed information and visual tools to assist growers in determining when to dig peanut. Approximately 65% of peanut farmers utilize Cooperative Extension educational materials and/or direct contact with county field faculty during this process. Peanut were produced on approximately 85,000 acres in 2010. Through more timely digging of peanut on 55,000 acres saving growers $350 pounds/acre or $95/acre (3,500 pounds/acre average yield at $0.27/acre), approximately $5.2 million dollars were gained by peanut growers through these educational programs and research supporting these programs.

Impact:

Peanut growers in North Carolina increased annual income of peanut by $5.2 million through timelier digging as a result of participation by campus and county personnel associated with peanut at North Carolina State University with growers in making these decisions.

Contact:

Dr. David Jordan
Department of Crop science
North Carolina State University
phone: (919) 515-4068
email: david_jordan@ncsu.edu

Article first appeared as North Carolina Peanut Note (PNNC-2011-044)