Germination of direct harvested peanut seed

Steele, J.L. (1983) Germination of direct harvested peanut seed. Transactions of the ASAE (American Society of Agricultural Engineers), 26 (4). pp. 1239-1244.

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The germination of seed from samples of peanuts dried in the laboratory with controlled (constant and cyclic) air temperature, humidity and airflow was determined. The peanuts were direct harvested to eliminate the uncertainties of windrow exposure and its effect on peanut seed germination. A range of entering air conditions (specified in terms of wet bulb (WB) temperature and depression) and airflow rates were studied during several harvest seasons. The study involved 97 harvest dates, 2 cultivars and 914 germination analyses. A sub-set of data (123 samples from near the point of air entry) was selected to establish relationships between seed germination and drying conditions (WB temperature, airflow and WB depression). The 3 relationships were presented graphically in terms of geometric germination means. The results indicated an optimum drying air WB temperature of 21 °C with a 10% germination reduction from the optimum when WB temperatures of 16.2 and 29.4 °C were used. A gradual reduction in average germination occurred with increased airflow and increased drying air potential (WB depression). The temperature relationship was extended to lower WB temperatures with other data collected over 2 yr. The results provide a basis for germination loss estimates for direct harvested peanuts when dried with different entering air conditions and airflow rates

Item Type: Article
Additional Information: SNNigam collections
Author Affiliation: USDA-ARS, Suffolk, VA, USA
Subjects: Agricultural Engineering
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 08 Sep 2013 12:28
Last Modified: 08 Sep 2013 12:28

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