Monday, 7 November 2005 - 8:45 AM
47-4

Growing Location and Genotype Effects on White Lupin Performance in Virginia.

Harbans Bhardwaj1, David Starner2, Steven Noffsinger3, and Edzard Van Santen3. (1) VIrginia State University, Agri. Res. Stn., Box 9061, Petersburg, VA 23806, (2) Virginia Polytechnic Institute and State University, Virginia Tech / N Piedmont AREC, PO Box 448, Orange, VA 22960, (3) Auburn University, Agronomy & Soils Dept., Auburn, AL 36849-5412

White lupin (Lupinus albus L.) has the potential to provide high protein grains to meet the food needs of increasing world population. However, detailed information about performance of lupin, as a grain crop in the mid-Atlantic region, is not available. We conducted replicated RCBD experiments at three locations (Orange, Petersburg, and Suffolk) with 20 lupin lines, from Auburn University, in Virginia during 2003-04 season. Each plot consisted of four 3.6 m long rows spaced 37.5 cm apart. Two rows from each plot were hand-harvested at maturity and data on various agronomic traits were recorded. Genotypes and locations exhibited significant effects on all traits except for entry effects on 100-seed weight and plant height. Location x entry interaction was significant only for 100-seed weight. The seed yield varied from 127 to 3008 kg/ha, harvest index varied from 9 to 49 percent, seeds per pod varied from 2.6 to 4.4, 100-seed weight varied from 18.7 to 21.6 g, and plant height varied from 58.9 to 71.7 cm. The mean seed yields at Orange, Petersburg, and Suffolk locations were 2488, 1975, and 1928 kg/ha, respectively. Seed yield exhibited a significant positive correlation with plant height, pods/seed, and harvest index. The results indicated that lupin can be a potential alternative grain crop in Virginia and the mid-Atlantic region. Extent of variation for harvest index and seed yield and existence of a significant correlation between these two traits indicate that further increases in seed yield may be possible. Further details of these results would be provided and discussed.

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