LRES M.S. Thesis Defense: Syd Atencio
- Wednesday, May 5, 2021 at 10:00am
Building a Better Lentil
Syd Atencio, M.S. Land Resources and Environmental Sciences
Advisors: Dr. Perry Miller, Dr. Mary Burrows & Dr. Clain Jones
“Building a Better Lentil,” is comprised of two agronomic studies to understand the role of crop fertility and seed treatments for the management of Fusarium root rot of lentil. Field trials were conducted at Bozeman, Havre, Moccasin and Sidney, MT, 2019-2020
Rhizobial Inoculant Formulations and Nutrient Provisions for Lentil. The objective of this experiment was to evaluate the effect of rhizobial inoculant formulations (granular vs. seed-coat/peat-powder) and nutrient additions (potassium, sulfur, and a micronutrient foliar fertilizer), on lentil establishment, growth, seed protein and yield. In six of eight site-years, there was no yield difference between inoculant type. Application of S fertilizer increased yield of three of eight site years by an average of 303 kg ha-1 (16.8%) compared to treatments without S. Application of K fertilizer had no measurable effect on seed yield. Results from this study further suggest the importance of S fertilization for lentils.
Efficacy of Seed Treatments for the Management of Lentil Root Rot Caused by Fusarium spp. Growing evidence suggests that the Fusarium spp. of pulses has a wide host range, which limit the use of crop rotations. This called for action on the assessment of a new management strategy. The objective of this experiment was to evaluate the efficacy of seed treatments for management of root rot caused by Fusarium spp. on lentil establishment, growth, disease severity and yield. Disease severity differed among seed treatments in three of eight site-years. In 2019 at Bozeman the control had a higher disease severity (DSI) than treatments with CruiserMaxx Vibrance Pulse, Obvius and Rizolex+Valent 1 by 7.2%. In 2020 at the control had a higher DSI than treatments CruiserMaxx Vibrance Pulse, Trilex 2000, Essential oils + Apron XL, Rizolex + Apron XL and Rancona Summit by an average of 16%. In 2020 at Havre, the control had the highest DSI than Obvius, CruiserMaxx Vibrance Pulse and EverGol Energy by 6%. The treatment response varied across site-year due to poor disease pressure ranging from 5-28%. However, this study still provided insight on the complexity of Fusarium spp. affecting lentils in the northern Great Plains.
- Department of Land Resources and Environmental Sciences