Q: There are weeds in the paddy rice field. The grass is large and the amount is large. How to use it to prevent it? I used to control 70.5% of the 2% oxazolone per acre. The effect is not good. The rice is not yet jointed.
A: This is the water sedge. The water sedge is a perennial sedge weed with underground tubers. The shoot is easy to be killed and the underground is difficult to control.
Suzhou Fumeishi Plant Protecting Agent Co., Ltd. Harry 70.5% 2 methyl oxazolone (66.5% 2 sodium tetrachloride + 4% oxalofenone) water dispersible granules, registered for rice transplanting field stem and leaf spray control For broadleaf weeds and sedges, the recommended dosage per hp is 528.75~634.5g, equivalent to 50~60g per acre. This medicine has good control effect on perennial sedge such as water sedge.
Using 30% of Harry's 70% oxazolone water dispersing granules per acre, the amount is less, which is the main reason for the poor control effect on the water sedge. From the picture, the water sedge has blossomed, and the drug resistance is enhanced. However, considering that there are more water sedges in the field, and the rice has not been jointed, it can be appropriately selected from 2 oxazolone, 2 a · oxacillin, A spray of chlorofluoropyrazine or the like is removed. 2 Azoxazone, 2 A · bentazone in the high temperature period is easy to cause phytotoxicity to rice, should strictly control the amount of medication, and pay attention to avoid the high temperature period of noon medication, so as not to cause phytotoxicity to rice.
(Source: Jiangsu Agricultural Science and Technology News)
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