Pod Maturity Images From Lewiston-Woodville

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Below are images from pod blasting yesterday (September 5) at Lewiston-Woodville.

Sampling all planting dates again would be advised (May 4 and 16 late next week). Keep in mind that a week on the early side of maturity can decrease yields and grades significantly.

Data in the table below show yields 540 pounds/acre lower when dug early compared with the second digging date. Waiting a week past the second date helps. But the increase is only a 100 pounds/acre. However, ELK goes up about 4 more points with each delay (dig 1 to dig 2 to dig 3) and TSMK goes up 3 points with each delay.

Not considering grades, at $0.27/pound ($540/ton), 540 pounds are worth $145/acre. This is the economic value of at least 2 of the 3 pest management bills a farmer has (weeds, disease, insects). But I know patience can be hard to come by and folks with lots of acres have to get started so they can get finished. This is why adequate digging and harvesting equipment is essential.

Table 1. Heat unit accumulation (HUA, DD56), days from emergence (DAE), pod yield (pounds/acre), and percentages of extra large kernels (ELK) and total sound mature kernels (TSMK) for the cultivar Gregory as influenced by digging date.
122 2549 3300 39 62
128 2659 3840 44 65
138 2798 3940 50 68
144 2860 3830 52 69
153 2920 3350 54 71
Data are pooled over 17 experiments from 2003-2012.
pod maturity profile

Image 1. Planted May 4. Between 10 and 14 days from digging

pod maturity profile

Image 2. Planted May 16. Closer to 2 weeks from digging

pod maturity profile

Image 3. Planted May 28. Three weeks, but check in 2 weeks

Article first appeared as North Carolina Peanut Note (PNNC-2013-078)