Institution:University of Florida
Region:Southeast (GA, FL, AL)
Project Fiscal Year:2015
Report Received Date:
Project NPB Budget:$5,685
In 2015 an experiment was conducted to harvest peanut at 125, 132, and 141 days after planting representing very early, early and optimum harvest timing, corresponding to 2100, 2300 and 2500 growing degree days (GDD). Pods were collected for other experiments and testing, but we evaluated seed germination and vigor. The consideration being that immature seed may have the ability to germinate, they are not quite as well formed as mature seeds. These plants can then have limited growth and development in subsequent seasons. Testing of 2015 seed by maturity class, yellow to black, indicated that less mature seed did have lower germination and vigor under low temperatures. When subjected to cool temperatures there was a reduction in germination as GDD increased even at optimal digging times. These data indicate that pinpointing the optimum time to dig peanut for seed is very difficult when based solely on GDD.