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ARS Home » Midwest Area » Madison, Wisconsin » U.S. Dairy Forage Research Center » Environmentally Integrated Dairy Management Research » Research » Publications at this Location » Publication #395478
Research Project: Improving Sustainability of Dairy and Forage Production Systems for the Upper Midwest

Location: Environmentally Integrated Dairy Management Research

Title: Seeding rate affects the performance of oat and black oat

Author
item SANTOS, ERICK - University Of Alberta
item DUBEUX, JOSE - University Of Florida
item QUEIROZ, LUANA - University Of Florida
item Jaramillo, David
item GARCIA, LIZA - University Of Florida
item VAN CLEEF, FLAVIA - Universidade De Sao Paulo
item ABREU, DACIELE - Federal Rural University Of Pernambuco
item RUIZ-MORENO, MARTIN - University Of Florida

Submitted to: Crop, Forage & Turfgrass Management
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/14/2022
Publication Date: 11/5/2022
Citation: Santos, E., Dubeux, J., Queiroz, L., Jaramillo, D.M., Garcia, L., van Cleef, F., de Abreu, D., Ruiz-Moreno, M. 2022. Seeding rate affects the performance of oat and black oat. Crop, Forage & Turfgrass Management. 8(2). https://doi.org/10.1002/cft2.20192.
DOI: https://doi.org/10.1002/cft2.20192

Interpretive Summary: Basic management practices, including ideal seeding rates, are still lacking for utilization of black oat. This study evaluated the performance of five seeding rates (15, 30, 60, 120, and 240 lbs/ac) on ‘Legend 567’ oat and ‘UF-10’ black oat when harvested three times per year. Seeding rates of 60, 120, and 240 lbs/ac tended to increase total herbage accumulation compared to 15 lbs/ac. Tiller density was greater for black oat than oat. Seeding rate was positively associated with tiller density and it explained from 84 to 98% and 96 to 98% of the variation for black oat and oat, respectively. Tiller mass was greater for oat than black oat, and greater for middle, compared to early and late season. Increasing seeding rate had a negative effect on leaf length in the early and middle seasons, and decreased leaf width from 0.56 to 0.39 in. in oat, and from 0.32 to 0.29 in. in black oat when changing from 15 to 240 lbs/ac. To maximize herbage accumulation at lower seeding cost, we recommend a seeding rate of 60 lbs/ac for both, oat, and black oat for multiple harvests.

Technical Abstract: Basic management practices, including ideal seeding rates, are still lacking for utilization of black oat (Avena strigosa Schreb.) in southeastern USA. This study evaluated the performance of five seeding rates (15, 30, 60, 120, and 240 lb. ac-1) on ‘Legend 567’ oat (Avena sativa L.) and ‘UF-10’ black oat when harvested three times (early, middle, and late season) per year. Seeding rates of 60, 120, and 240 lb. ac-1 tended (P = 0.07) to increase total herbage accumulation (4760 lb. DM ac-1) compared to 15 lb. ac-1 (3945 kg DM ac-1). Tiller density was usually greater for black oat than oat. Seeding rate was positively associated with tiller density and it explained from 84 to 98% and 96 to 98% of the variation for black oat and oat, respectively. Tiller mass was greater for oat (0.045 oz. tiller-1) than black oat (0.034 oz. tiller-1), and greater for middle (0.043 oz. tiller-1), compared to early and late season (0.037 oz. tiller-1, on average). There was a negative effect (R2 = 0.97; P = 0.02) of seeding rate on tiller mass. Increasing seeding rate had a negative effect on leaf length in the early and middle seasons (P < 0.05), and decreased leaf width from 0.56 to 0.39 in. in oat, and from 0.32 to 0.29 in. in black oat when changing from 15 to 240 lb. ac-1. To maximize HA at lower seeding cost, we recommend a seeding rate of 60 lb. ac-1 for both, oat, and black oat for multiple harvests.