Posted on

Different Oat Varieties, Plant Growth Regulators (PGRs), Seeding Rates and their Interactions on Lodging and Shattering

Previous oat-based research has indicated that increased seeding rates are associated with better weed competition and increased yields. However, there is an oats optimum seeding rate after which there are no benefits. For new oat varieties, it is unknown whether the current standard seeding rate is optimum. Oat yields and quality are affected by lodging and shattering, both of which pose a challenge for producers. Using PGRs to address lodging was proven effective. However, how PGRs interact with seeding rates and their effects on shattering is unknown.

The overall objective of this three-year project is to assess the interaction between PGRs, increased seeding rates and shattering in tall and short oats varieties. Both PGRs (listed below) have been registered for cereals but recent research (on barley) has demonstrated that only Moddus® is effective in barley. Therefore, it is important to assess the effect of both PGRs on oats.

The specific objectives are:

  1. To identify the PGR-oat variety pairs that lead to significant plant height reduction and subsequent lodging under different environments.
  2. To assess the effects of two PGRs (Moddus® and Manipulator®) on other agronomic parameters in different oat varieties.
  3. To assess the effects of increased seeding rate on agronomic parameters in different oat varieties.
  4. To evaluate the interaction of PGRs with seeding rates on agronomic parameters and shattering in different oat varieties
  5. To evaluate the effects of PGRs on oat agronomic parameters under drought conditions.
  6. To carry out a morphological (form and structure) assessment of palea and lemma (parts of the oat hull anatomy) in different oat varieties and relate these structures to shattering under normal and drought conditions.

Oat varieties that will be evaluated are: AC Morgan and CDC Arborg (tall varieties); and, CS Camden and Summit (short varieties). POGA will update producers on the progress of this research as annual status and final reports are received.

Project Details

  • Listing ID: 6207
  • Project Status In Progress
  • Principal Investigators Dr. Linda Gorim, University of Alberta
  • Projects With Results Projects with Results
  • Project Dates 2024-2027
  • Abstract/Summary The overall objective of this three-year project is to assess the interaction between PGRs, increased seeding rates and shattering in tall and short oats varieties. Both PGRs (listed below) have been registered for cereals but recent research (on barley) has demonstrated that only Moddus® is effective in barley. Therefore, it is important to assess the effect of both PGRs on oats. Oat varieties that will be evaluated are: AC Morgan and CDC Arborg (tall varieties); and, CS Camden and Summit (short varieties). POGA will update producers on the progress of this research as annual status and final reports are received.