In recent years, the control of tomato gray mold using chemical methods has become increasingly challenging due to the growing resistance of the pathogen to conventional pesticides like thiophanate-methyl and procymidone. To address this issue, researchers have turned to newer compounds such as pyridine azole, which shows promising results in both prevention and treatment. Unlike traditional fungicides, pyridine azole exhibits strong systemic activity and effectively inhibits mycelial growth, spore germination, and germ tube elongation of *Botrytis cinerea*. Importantly, it works through a different mechanism, reducing the risk of cross-resistance.
In 2009, the Agricultural Department of Wujiang City conducted a field trial using 25% pyridine emulsifiable concentrate (EC) to manage tomato gray mold. The experiment took place in a greenhouse, with three different concentrations of the product: 750, 1000, and 1500 times dilution. For comparison, 50% procymidone wettable powder and 70% thiophanate-methyl wettable powder were also tested at a 1000 times dilution. Each application used 60 kg of spray per acre, applied every seven days—three times in 2009 and four times in 2010.
The results were impressive. The 750 times dilution of 25% pyridine EC achieved the highest control rates, reaching 94.7% in 2009 and 94.4% in 2010. The 1000 times dilution followed closely, with 89.5% and 87.5% effectiveness over the two years. These results were significantly better than those of the conventional fungicides, which recorded 79.7%, 82.1%, and 69.5%, 70.2% respectively. Even the 1500 times dilution of pyridine EC showed good performance, with 83.3% and 78.5% control rates, comparable to 50% procymidone WP but still superior to thiophanate-methyl WP.
Based on these findings, pesticide manufacturers recommend using 25% pyridine EC at a concentration of 750–1000 times dilution (60–100 ml per acre). It is advised to apply the product early in the disease development stage, every seven days, for three to four consecutive treatments. To prevent the emergence of resistant strains, it is recommended to rotate or combine pyridine EC with other fungicides. This approach not only enhances efficacy but also prolongs the useful life of the active ingredient.
Shaft Collars
Shaft Collar
Shaft Collars are common pieces of hardware used for holding bearings and sprockets to shafts, situate components in motor and gearbox assemblies, and serve as mechanical stops. Shaft collars can be found in virtually any type of machinery and are frequently accessories to other components. Shaft collars provide three primary functions: 1) holding components in place, 2) locating or positioning components on a shaft, and 3) creating an attachment between shaft and another component. Despite their simple design, shaft collars play an important role in a wide range of industrial applications.
Yokelink Shaft Collars come in both inch and metric sizes and are available in either Carbon steel or 304 Stainless Steel. Yokelink shaft collars includes set-screw collars as well as one-piece (single-split) and two-piece (double-split) collars with zinc plated or black oxide finish. Our shaft collars are available for most common sizes ranging from 3/16″ to 4″ and 5mm to 100mm. When you need Shaft Collars, refer to our catalog, we offer them in a full selection of sizes, provide the diameter or part number to get a quote on these shaft collars, leave your message, or send us an email. You can also call us to get answers to your questions and place your order.
Shaft Collars,Zinc Plating Shaft Collars, set-screw collars, single-split Shaft Collar
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