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Seed Priming Does Not Improve Corn Yield in a Humid Temperate Environment

Eastern Cereal and Oilseed Res. Cent. (ECORC), Cent. Exp. Farm, Res. Branch, Agric. and Agri-Food Canada, 960 Carling Ave., Ottawa, ON, Canada, K1A 0C6

View larger version (29K): [in a new window]   Fig. 1. Total precipitation (mm) and mean air temperatures (°C) at the experimental site in Ottawa in 10-d intervals during the growing season of 2002 and 2003.

View larger version (18K): [in a new window]   Fig. 2. Effect of N treatment on the grain yield of six corn hybrids in 2002 averaged over two seed-priming treatments. The vertical bars are LSD0.05.

View larger version (19K): [in a new window]   Fig. 3. Effect of seed priming with different treatments for 16 h on the grain yield of corn grown with 150 kg N ha–1, averaged over two corn hybrids. The bars following with the same letter are not significant at p 0.05. IAA, indol acetic acid; GA3, gibberallic acid.

View larger version (23K): [in a new window]   Fig. 4. Effect of N treatments on the grain yield of corn in 2002 and 2003 averaged over corn hybrids and seed treatments. The vertical bars are LSD0.05.

View larger version (16K): [in a new window]   Fig. 5. Leaf chlorophyll content measured at different stages with SPAD in the corn grown with or without 150 kg N ha–1 in 2003. The error bars are the LSD0.05.