Publication Date
1993
Description
Scarifying pasture legume seed to reduce hard seed content can improve pasture establishment. A heated, rotating cylinder suitable for treating large quantities of seed was used to test the effect of a range of heat doses (measured in cumulative degree-seconds of treatment above 90°C and expressed as degsecs>90°C) on seed of fine-stem stylo (Stylosanthes gulianensis var. lmermedla), Heat doses ranged from O to 1500 degsecs>90°C, A heat dose of 450 degsecs>90°C, achieved by heating seed at 120°C for 15 seconds in the cylinder, gave the highest germination without increasing the proportion of dead seed. This treatment temperature and time was then used to treat 2,5 t of fine-stem stylo seed for various commercial sowings over the next 2 years. Germination tests from subsamples of these seed-lots showed germination increased from an average of 2191, In untreated seed to 5591, after heat treatment, while dead seed content increased from 32 to only 3591,.
Citation
Paton, Colin J., "Increasing the Germination of Seed of Fine-Stem Stylo (Stylosanthes guianesis var. Intermedia) using a Heated, Rotating Cylinder" (2025). IGC Proceedings (1989-2023). 29.
https://uknowledge.uky.edu/igc/1993/session59/29
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Increasing the Germination of Seed of Fine-Stem Stylo (Stylosanthes guianesis var. Intermedia) using a Heated, Rotating Cylinder
Scarifying pasture legume seed to reduce hard seed content can improve pasture establishment. A heated, rotating cylinder suitable for treating large quantities of seed was used to test the effect of a range of heat doses (measured in cumulative degree-seconds of treatment above 90°C and expressed as degsecs>90°C) on seed of fine-stem stylo (Stylosanthes gulianensis var. lmermedla), Heat doses ranged from O to 1500 degsecs>90°C, A heat dose of 450 degsecs>90°C, achieved by heating seed at 120°C for 15 seconds in the cylinder, gave the highest germination without increasing the proportion of dead seed. This treatment temperature and time was then used to treat 2,5 t of fine-stem stylo seed for various commercial sowings over the next 2 years. Germination tests from subsamples of these seed-lots showed germination increased from an average of 2191, In untreated seed to 5591, after heat treatment, while dead seed content increased from 32 to only 3591,.
