losses from equally high aphid populations decline substantially as harvest approaches, unless aphid densities are reducing leaf area enough to permit sunburn. Wilting, yellowing and some Use resistant strains where available Bacterial wilt Inorganic bacteriocides such as stunting of the plants, which Organic amendments to soil have direct impacts on plant health and calcium cyanamide (CC) (fertilizer), (Ralstonia solanacearum/) finally die. In tubers, crop productivity. They are advantageous because they improve the ammonia water (AW), and a Pseudomonas areas are seen on the physical, chemical, and biological properties of soil, which can have mixture of ammonium bicarbonate outside, especially near the point positive effects on plant growth solanacearum) with lime (A+L) of attachment of the stolon. Cut Bacterial wilt is difficult to control (or eradicate) because of the tubers may show pockets of soil-borne nature of its causal organism. white to brown pus or browning Adopt rotations with pastures, cereals and non-solanaceous crops of the vascular tissue which, if left for periods exceeding five years. standing, may exude dirty white Use of certified seed from reliable sources. globules of bacteria. As the Planting in areas where bacterial wilt has not occurred previously. disease progresses bubbly Control self-sown potatoes. Control weed hosts globules of bacteria may exude Avoid deep ploughing – the organisms survive in the deep, cool through the eyes; soil will often layers of soil. adhere to the exuded bacteria, Irrigation water should never be allowed to run freely over or hence the name 'sore eyes' or below the soil surface. 'jammy eyes'. Regular crop inspection for disease symptoms and remove and destroy diseased plants, tubers and immediate neighbours. Use stock to clean up chats, discarded tubers and crop debris, but do not allow the stock back onto clean paddocks. Do not return potato waste, e.g. oversized, misshapen and diseased tubers to paddocks. Minimize the spread through proper sanitation practices.
losses from equally high aphid populations decline substantially as harvest approaches, unless aphid densities are reducing leaf area enough to permit sunburn. Bacterial wilt (Ralstonia solanacearum/) Pseudomonas solanacearum) Wilting, yellowing and some stunting of the plants, which finally die. In tubers, areas are seen on the outside, especially near the point of attachment of the stolon. Cut tubers may show pockets of white to brown pus or browning of the vascular tissue which, if left standing, may exude dirty white globules of bacteria. As the disease progresses bubbly globules of bacteria may exude through the eyes; soil will often adhere to the exuded bacteria, hence the name 'sore eyes' or 'jammy eyes'. Use resistant strains where available Organic amendments to soil have direct impacts on plant health and crop productivity. They are advantageous because they improve the physical, chemical, and biological properties of soil, which can have positive effects on plant growth Bacterial wilt is difficult to control (or eradicate) because of the soil-borne nature of its causal organism. Adopt rotations with pastures, cereals and non-solanaceous crops for periods exceeding five years. Use of certified seed from reliable sources. Planting in areas where bacterial wilt has not occurred previously. Control self-sown potatoes. Control weed hosts Avoid deep ploughing – the organisms survive in the deep, cool layers of soil. Irrigation water should never be allowed to run freely over or below the soil surface. Regular crop inspection for disease symptoms and remove and destroy diseased plants, tubers and immediate neighbours. Use stock to clean up chats, discarded tubers and crop debris, but do not allow the stock back onto clean paddocks. Do not return potato waste, e.g. oversized, misshapen and diseased tubers to paddocks. Minimize the spread through proper sanitation practices. Inorganic bacteriocides such as calcium cyanamide (CC) (fertilizer), ammonia water (AW), and a mixture of ammonium bicarbonate with lime (A+L)
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