Canola (Brassica napus L.) is one of the most important crops for industry worldwide including in Western Australia (WA). Research on optimization of canola growth and yield are extremely important for WA agricultural economics. An environmental friendly approach to control soil-borne disease such as Sclerotinia sclerotiorum is a valuable research. The use of fungal and bacterial biological control agents (BCAs) is increasingly important because of the cost of chemical fungicides and concern for the sustainable environment. This book covers understanding of the canola, its pathogens and exploring possible controlling strategies.