Sorghum planting: how to control sorghum drill beetle?
How to control sorghum drill beetle? Please guide the method to control sorghum drill, which is the main pest of sorghum and corn. Sorghum drill overwinters as mature larvae in sorghum and corn stalks, and a few overwintering in corn ear axis. The adults have phototaxis and lay eggs at the heart-leaf stage in spring and at the heading stage of corn in summer. The newly hatched larvae crawled rapidly, the sorghum and corn seedlings were small, and the affected plants showed withered heart. In the injured stem, several or more than a dozen larvae often eat the stem tissue, and most of them feed on the ring, so the plant is easily broken by the wind. You can refer to the following methods for control: first, deal with overwintering hosts to reduce the number of insect sources. Before pupation, the straw of corn and sorghum was retted at high temperature or used as biogas raw material to eliminate the overwintering insect source. Second, chemical prevention and control. 1. Spray 50 kg of water with 25% Guangzhi EC per mu in the heart and leaf stage. two。 Phoxim poisonous soil with 0.2% active ingredient was applied to the heart leaf of sorghum in the heart leaf stage, which had a good control effect. 3. The drug use of sorghum should pay attention to safety. Dichlorvos and trichlorfon are sensitive to sorghum and can not be used. Click to get more sorghum planting technology click to get more grain planting technology
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Sorghum planting: what is sorghum bacterial red streak?
What is sorghum bacterial red streak? Please introduce the main damage to leaves caused by bacterial red streak of red sorghum. At first, the leaf spot showed a small, narrow, watery spot, and after expansion, it became light reddish brown. Some plaques turn brown in the center and red on the edges, and wide long oval spots appear intermittently on the stripes. Sometimes the plaque can be covered.
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Sorghum planting: how to control sorghum anthracnose?
How to control anthracnose by planting sorghum? Please introduce the method of sorghum anthracnose is a common disease of sorghum, after the plant is susceptible, the leaves appear disease spots, the function is reduced, affecting fruiting and filling. Production is generally reduced by 10%, and in severe cases, it can be reduced by more than 25%. Sorghum anthracnose can be controlled by referring to the following methods: ①.
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