Response of Peanut Cultivars to Seeding Density and Row Patterns
- B. L. Tillman *,
- D. W. Gorbeta,
- A. K. Culbreath and
- J. W. Toddb
Spotted wilt, caused by Tomato spotted wilt virus (genus Tospovirus; family Bunyaviridae) is a major disease of peanut (Arachis hypogaea L.) in the southeastern United States. Research has shown that several management factors such as increased plant stands (seeding density) and twin-row planting pattern can help minimize losses from spotted wilt; however, the single most important factor is cultivar resistance. New cultivars with excellent spotted wilt resistance have been developed, and studies were conducted in Marianna, FL during 2001-2004 to evaluate their response to seeding density and twin-row vs. single-row planting patterns. Pod yields were greater and spotted wilt severity was lower in twin-row compared to single-row planting patterns, but there was no cultivar × row-pattern interaction. All cultivars, regardless of their level of resistance to spotted wilt benefit from being planted in twin-rows. No differences in yield or spotted wilt severity were noted among seeding density treatments of 5, 6, and 7 seed per linear foot in 2001-2004. However, in 2004, yield was reduced and spotted wilt increased at 4 compared to 5, 6, or 7 seeds per linear foot. These results indicate that twin-row planting patterns and seeding densities of 5 to 7 seeds per linear foot benefit peanut cultivars with at least intermediate resistance to spotted wilt.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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