Evaluation of seed treatment products for increasing cotton stand and yield of cotton in central Alabama, 2018

摘要

In this study, seed treatments are evaluated for their ability to increase yield by protecting the seedlings in the early stages of growth. The study was conducted at Auburn University's Prattville Agricultural Research Unit, Prattville, AL. Treatments were arranged in a randomized complete block design with four replications. The plots were planted on 13 Apr. using Stoneville 4949 GLT variety cotton. Test plots consisted of 2 rows, 7.6 meters long with a 1-meter row spacing and a 1.8-meter alley between replications. All chemicals in this test were applied as seed treatments. Treatment of Aeris was included as a negative control this treatment had no fungicide treatments. A base treatment was included as a positive control, these seeds were treatedwith Spera, Vortex, allegiance, and Evergol Prime fungicides. All plots were maintained throughout the season with standard insecticide, herbicide, and fertilizer practices as recommended by the Alabama Cooperative Extension System and watered as neededwith an overhead irrigation system. Monthly average maximum temperatures from planting in April through harvest in October were 23, 31, 33, 33, 32, 33, and 28°C with average minimum temperatures of 9, 17, 21, 22, 22, 22, and 17°C, respectively. Rainfall accumulations for each month of the growing season were 8.41, 18.92, 8.56, 14.27, 11.76, 14.91, and 1.32 cm respectively for a total of 78.15 cm. Plant stand counts were taken 15 May which corresponded to 31 DAP. Seed cotton yield was collected on 10October. Data were analyzed with SAS 9.4 using PROC GLIMMIX and LS-means were compared using the Tukey-Kramer method (P < 0.1).