Effect of Silicon Sources on Sugarcane Orange Rust, Ring Spot and Red Rot in Brazil

Brazil is the world’s largest producer of sugarcane (Saccharum officinarum), but occurrence and severity diseases such as orange rust (Puccinia kuehnii), ring spot (Leptosphaeria sacchari), red rot (Colletotrichum falcatum) could be part several factors limiting its production reason for replacing cultivars. It important to use other forms disease control depending on time required obtain new resistant varieties. The silicon (Si) can provide more resistance plant making less vulnerable diseases. A study was conducted under greenhouse field conditions. had 13 treatments (control, fungicide, foliar solution I II, K silicate, silicic acid at 20, 40 60 mg ha-1, wollastonite, agrosilicio, wollastonite + silicate; agrosilicio fungicide; silicate) with four replications. nine 100 300 g ha-1 phosphite 0.5 1 L ha-1) three Both studies used a randomized block design. showed an increase in dry mass pre-sprouted seedling Si uptake treatments, especially acid. silicate lower than fungicide. On efficient reducing area progress curve (AUDPC) compared silicate. Fungicide also AUDPC well.