Causes and manifestations Improper application, excessive concentration or uneven spray, or excessive use, or the use of expired drugs, often appear yellow-white or brown focal spots, and even whole leaves and whole plants withered yellow, and die. The use of rice foot green to control sheath blight, often appear green and green, the ears are not real. Deformed leaves and the like may occur using high concentrations of 2,4-D and metformin chemical herbicides.
Precautions Before using pesticides, it is necessary to know in detail the variety, nature, use, use methods and precautions of the pesticides. Do not misuse the pesticides. Do not use too much and the concentration is too high. It should be properly configured according to the regulations and applied evenly. Properly master the time of medication, such as the use of metformin herbicide, generally safest in the tillering period, before the seedling stage 5 or after the jointing, it is prone to phytotoxicity.
Remedial measures If phytotoxicity has occurred, immediately drain and fill with new water, and increase the application of quick-acting fertilizer to promote the growth of rice seedlings. When early detection of herbicide phytotoxicity in the bud stage and seedling stage, the application of plant ash or sprayed dilute alkali water as soon as possible can reduce the phytotoxicity.
【Comment】 【Print this article】 【Close this page】 【Large, medium and small】

Stainless Steel Screw

Stainless Steel Screws are available in both 18-8 and 316 stainless steel. Please check out the categories listed below for additional information and sizes.

Sheet Metal Screws and Machine Screws are available in several alloys. These alloys include 18-8 Stainless Steel, 304 Stainless Steel and 316 Stainless Steel. Not all sizes and diameters are available in a specific alloy. Contact our sales department if you don't see the size your looking for.

Stainless Steel Screw,Stainless Steel Eye Screws,Stainless Steel Lag Screws,Stainless Lag Bolts

Taizhou Shuwen Stainless steel Co., Ltd , https://www.shuwengroup.com

Posted on