Annual Ryegrass Seed Production: Fertility and Plant Growth Regulators - 2020
Objective/Rationale: To determine the optimal nitrogen fertilizer rate(s), in combination with a Plant Growth Regulator (PGR), for use in Annual ryegrass for seed production.
Methodology: This small plot research trial was conducted in a randomized complete block design with 4 replicates. Each plot was 2m by 7m with borders on each replicate end. There were 12 treatments based on two factors: plant growth regulator application (Manipulator, Parlay or no PGR) and nitrogen rate (0, 50, 100, and 125 kg of N/ha) (Table 1).