Results From Planting and Digging Date Trials at Lewiston With Bailey

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This is a brief summary of results from the planting date trial at Lewiston-Woodville with Bailey (May 4, 16 and 28) with combinations of Thimet and Orthene and two planting dates (Trial 1) and the planting date trial with Thimet-treated peanut in combination with fungicide seed treatment (with or without fungicide applied directly to the seed) (Trial 2). I will talk about those at our in-service training session in February. The value of both Thimet and Orthene become apparent as well as seed treatment with fungicide. None of these results are earth shattering but they remind of us of the value of some key production and pest management practices. Although I could have left the peanuts in the field longer before digging the first planting date, in general yields were higher when planted in mid-May or late- May, although you really needed to be patient on digging to achieve these yields. Apogee did not affect yield regardless of planting or digging dates (Trial 3). Results with digging dates suggest that the early planting date in Trials 1 and 2 were not dug too early, I think. Some of these data will be added to the 2014 Peanut Information series.

Trial 1. Interactions of Insecticide Treatment, Planting Date and Digging Date.

Table 1. Interactions of Thimet and Orthene spray programs. Lewiston-Woodville, 2013
In-furrow Postemergence Thrips damage Pod yield Increase over non-treated
(Scale 0-5) (lbs/acre) lbs/acre)
No Thimet No Orthene 3.3 5,472
No Thimet Orthene 1.1 5,856 384
Thimet No Orthene 1.8 5,750 278
Thimet Orthene 0.5 6,117 645
Data are pooled over planting and digging dates.
Table 2. Interactions of Planting and Digging Date. Lewiston-Woodville, 2013
Pod yield (lbs/acre)
Digging Dates
Planting Date Thrips damage (scale 0-5) First Second
May 4 1.8 4,926 (Sep 20) 4,915 (Sep 27)
May 16 1.5 6,043 (Sep 27) 6,203 (Oct 7)
May 28 1.7 5,832 (Oct 7) 6,871 (Oct 21)
Data for thrips damage are pooled over Thimet, Orthene, and digging date treatments. Data for pod yield are pooled over Thimet and Orthene treatments. Two digging dates were included within each planting date and differed for each planting date based on peanut maturity.

Trial 2. Interactions of Insecticide Treatment and Seed Treatment and Planting Date

Table 3. Influence of Planting Date and Fungicide Seed Treatment on Peanut Stand and Pod Yield. Lewiston-Woodville, 2013
Peanut Stand (Plants/20 ft of row) Pod yield (lbs/acre)
Fungicide Seed Treatment Fungicide Seed Treatment
Planting Date No Yes No Yes
May 4 56 80 2,597 4,544
May 16 55 72 4,736 5,420
May 28 71 85 5,273 6,001
Data are pooled over Thimet treatments.
Table 4. Influence of Planting Date and Thimet on Thrips Damage and Pod Yield. Lewiston- Woodville, 2013
Thrips damage (scale 0-5) Pod yield (lbs/acre)
Thimet Thimet
Planting Date No Yes No Yes
May 4 4.0 2.1 3,303 3,838
May 16 3.1 0.6 4,893 5,262
May 28 1.8 0.4 5,573 5,701
Data are pooled over fungicide seed treatments.
Table 5. Influence of Thimet and Fungicide Seed Treatment on Thrips Damage, Peanut Stand and Peanut Pod Yield. Lewiston-Woodville, 2013
Thrips Damage Stand Pod yield
Thimet Fungicide Seed (Scale 0-5) (Plants/20 ft of row) (lbs/acre)
No No 3.2 47 3,980
No Yes 2.7 78 5,199
Yes No 1.1 73 4,424
Yes Yes 0.95 81 5,443
Data are pooled over planting dates.

When pooled over seed treatments and planting dates, Thimet increased yield from 4202 lbs/acre to 5321 pounds/acre.
Trial 3. Interactions of Apogee treatment and planting and digging date.

Table 6. Peanut Yield (lbs/acre) as Influenced by Planting Date and Digging Date for the Variety Bailey at Lewiston-Woodville during 2013. Data are pooled over Apogee treatments.
Planting date Digging date Yield
May 3 September 10 4,135
May 3 September 24 4,696
May 3 October 11 5,041
May 3 October 23 4,528
May 16 September 10 4,596
May 16 September 24 4,837
May 16 October 11 5,957
May 16 October 23 6,110
May 28 September 10 3,722
May 28 September 24 4,598
May 28 October 11 5,560
May 28 October 23 6,214

Article first appeared as North Carolina Peanut Note (PNNC-2013-095)