Breeding companies are favouring the development of hybrids in order to pay for breeding services.
Hybrids provide growers with more vigorous seedlings, comparatively better plant establishment and generally higher yields, however growers have to purchase new seed of hybrid varieties every year in order to get these potential yield benefits.
Seed for hybrid canola is 25 times more expensive than the seed of open-pollinated canola.
Inevitably if growers are forced into hybrids they will wish to minimise seed costs by sowing at lower densities.
To investigate the plant density response to yield and oil content of Triazine Tolerant (TT) and Roundup Ready (RR) hybrid canola in comparison with open-pollinated canola.