Pyrimethanil belongs to the class of anilinopyrimidine fungicides and has a good control effect against gray mold. After application, it can quickly reach the parts of the plant where flowers and young fruits cannot reach the spray to kill the bacteria. The efficacy is not sensitive to temperature and is applied at relatively low temperatures, and the effect of controlling gray mold is still very good. The phytotoxicity of pyrimethanil on beans (canola, cowpea, cowpea, etc.) is mainly caused by severe yellowing, dryness, brown spots, and even leaf loss, and the same flower and fruit will also fall off. Hebei Yuanbai Technology Co., Ltd. , https://www.yuanbaikeji.com
However, if the pyrimethanil is used improperly, it is easy to cause phytotoxicity on the eggplant, and many dark brown spots appear on the leaves, and the shape is irregular or the leaves are yellow and fall off. When there are spots of phytotoxicity, many vegetable farmers also think that eggplants have "spotted deciduous disease", and as a result, they are again used to aggravate the phytotoxicity. Therefore, it is necessary to distinguish the damage of pyridoxamine plague spots and invasive disease spots. symptom.
Pesticide network for everyone to introduce pyrimethanil phytotoxicity and rescue measures
The sensitivity of beans and eggplant to pyrimethanil is not to say that this medicine cannot be used, but rather to use it or to strictly control the concentration. Here, I give a reasonable use concentration of beans and eggplant: the amount of active ingredient of pyrimethanil should not exceed 6 ga.i. / mu. For example, 40% of pyrimethanil • iprodione suspension (which contains 15% of pyrimethanil) can only use up to 40g per acre on beans and eggplant.
The Pesticide Information Network reminds everyone that if pyrimethanil is present, it can be sprayed with 2-3g (0.136% 赤·å²ä¹™Â·èŠ¸è‹”WP) + foliar zinc fertilizer against a pot of water, gibberellin can be effectively supplemented The gibberellin content in the phytotoxic crops, high-specific zinc can promote the synthesis of auxin, which is helpful for photosynthesis. Both can effectively alleviate the phytotoxicity and at the same time enhance the plant's resistance to stress.