Monday, November 13, 2006

Canola Production Research in Virginia.

David Starner, Virginia Tech/N Piedmont AREC, Po Box 448, Orange, VA 22960 and Harbans Bhardwaj, Virginia State Univ, Agricultural Research Station, Petersburg, VA 23806.

We are interested in developing canola as an alternate cash crop in Virginia to diversify Virginia’s agriculture and to enhance the agricultural economy.  Recent replicated experiments have indicated that seeding rates of 4.5, 9.0, 13.5, and 18.0 kg/ha did not effect seed yields (1989, 2384, 2728, and 2977 kg/ha, respectively) at Petersburg.  A comparison of 0.5, 1.0, and 1.5 kg/ha seed rates at Orange resulted in similar seed yields of 3286, 2759, and 3178 kg/ha, respectively.  The planting date experiments at Petersburg have indicated that seed yields following planting done on October 3, 2004 were superior than those done at October 17 or November 4, 2004.  The planting date experiment at Orange during 2004-05 indicated that all plots from the October 26 planting and most plots from October 14 plantings had unsatisfactory stand.  Previous research in Virginia has indicated that middle of September to early October in the Northern Piedmont region, October in the Southern Piedmont region, and middle of October to early November in the Coastal Plain region of Virginia are optimal canola planting dates.  It has been observed that 112 kg/ha each of N, P, and K (on soils testing medium in P and high in K), along with 34 kg/ha S results in optimal seed yields in Virginia.  Research at Orange during 2004-05 indicated seed yields following two rates of boron (0 and 9 kg/ha) and two rates of S (0 and 34 kg/ha) were not different (3836 and 3964 kg/ha for boron and 3855 and 3945 kg/ha for S.  Seed yields following four P rates (0, 34, 68, and 102 kg/ha) at Orange were 33, 1969, 3463, and 4292 kg/ha indicating superiority of 68 and 102 kg/ha of P for canola production.  Further details of these experiments will be presented and discussed.