|Location||Scott, MS||Planting Date||5/30/19|
|Soil Type||Commerce Silt Loam||Harvest Date||10/22/19|
|Previous Crop||Corn||Potential Yield (bu/acre)||2000|
|Tillage Type||Conventional||Seeding Rate (seeds/acre)||30K, 40K, 50K|
Two Deltapine® cotton varieties, DP 1646 B2XF and DP 1845 B3XF, were planted in three different row configurations: solid planted 38-inch rows, 38-inch 2:1 skip row, and 38-inch 1:1 skip row (equivalent to 76-inch solid row spacing).
Average yield across both cotton varieties was considered on a per acre basis and on a per row acre basis. Per row acre does not include the land area of the skipped rows and was used to demonstrate the yield potential of the plants (Figure 3).
All treatments received 90 lb of liquid UAN (32% N).
Mepiquat chloride (4.2%) plant growth regulator (PGR) was applied as needed across all treatments. Growing conditions for the 2019 season did not require aggressive PGR applications for cotton at the Scott Learning Center. A total of 38 fl oz/acre were applied (10 fl oz/acre on July 14, 12 fl oz/acre on August 7, and 16 fl oz/acre on August 30).
All weed control, insect control, and irrigation inputs were applied per local standards on all treatments.
The trial was planted in 12-row strips, 250 feet long, and 6 rows were harvested for yield.
Turnouts from a separate yield trial at the Scott Learning Center were used to adjust final yield from seed cotton per acre to lint yield per acre.
1 Newman, M.A. 2011. Cotton disease and nematode control. The University of Tennessee Extension. E&PP INFO24. https://ag.tennessee.edu/EPP/Redbook/10cotton%20disease%20and%20nematode%20control%20MAYBE%20REPLACE.pdf.