Top 10 Agricultural Power Sprayer The top 10 best-selling power sprayers in the agriculture area are shown below. As you know, power sprayers are a helpful tool for spraying pesticides, herbicides, and fungicides onto crops that need protection and prevention of these pests. These powerful sprayers cover large areas quickly and effectively for higher crop yields. To find the best power sprayer for your needs, you should first determine what type of material is likely to be on your field or work site before doing your research. This will help ensure that it has the features most desired by landscapers, farmers, commercial growers or other agricultural professionals.