Corn Stand Establishment
Planting corn early to maximize yield potential often means that germinating and emerging seedlings are exposed to significant stress. Soil temperatures at planting are typically well below the optimal temperature for corn emergence, which is around 85 F. High-residue environments can be particularly stressful; soils are cooler and wetter under corn residue, which slows emergence and increases the vulnerability of seeds and seedlings to diseases and insects. Seed treatments are an important tool to help protect seedlings and promote stand establishment and early vigor for increased yields.
Pioneer Premium Seed Treatment (PPST) 250 is standard on all Pioneer® brand corn hybrids. PPST 250 seed treatment includes fungicide, insecticide and biological components. The exclusive biological seed treatment product in PPST 250 contains selected living microorganisms, their exudates and other bioactive compounds. Seed corn treated with the biological seed treatment has shown enhanced performance in early growth and yield.
Results from 52 on-farm strip trials showed that PPST 250 had an average yield advantage of 2.9 bu/acre over seeds treated with only the fungicide (FST) and insecticide (IST) components (Figure 1).
Figure 1. Average PPST 250 (FST+IST 250+Biological) yield advantage vs. FST+IST 250 across 52 on-farm locations.
Figure 2. Side-by-side comparison of PPST 250 (left) vs. PPST 250 plus DuPont™ Lumivia™ insecticide (right) in a 2014 research trial near Leland, Miss.
PPST 250 plus DuPont™ Lumivia™ insecticide is a combination of the standard PPST 250 corn seed treatment (4 fungicide active ingredients & Cruiser® 250 insecticide) with the addition of the new insecticide seed treatment DuPont Lumivia (0.25 mg ai/seed), a chloranthraniliprole active ingredient.
PPST 250 plus Lumivia insecticide provides enhanced activity against a broad spectrum of early-season insect pests in corn including wireworm, black cutworm, fall armyworm, white grub and seedcorn maggot.
DuPont Pioneer conducted a study evaluating the performance of PPST 250 plus Lumivia insecticide in 75 on-farm trials in 2013. Across all locations, PPST 250 plus Lumivia insecticide showed an average yield advantage of 2.9 bu/ acre over PPST 250 alone (Figure 3).
Figure 3. Yield advantage of corn treated with PPST 250 plus Lumivia insecticide compared to PPST 250 across 75 on-farm trials in 2013.