Broccoli, scientifically known as Brassica oleracea var. italica, was first cultivated in the 17th century. Based on 2022 USDA Ag census, in the United States, broccoli is grown on 96,600 acreage. Broccoli is damaged by more than 25 insect pests. Some pests are region/place specific and some are common across the world like aphids, mites, etc., Pests like imported cabbage worms, cabbage loopers, and diamondback moths have a destructive effect on the crop in different growth stages of the crop. Organic pesticides to manage these pests have mixed results and account for increased labor and costs. Mesotunnels could serve as a viable pest management approach within organic production systems. “Meso” means “middle,” so mesotunnels are medium-size tunnels – taller than low tunnels and shorter than high tunnels. A breathable nylonmesh fabric (brand names include ProtekNet and ExcludeNet) that resembles window screen are placed over the mesotunnel. The fabric acts as a barrier for insect pests and prevents their entry and disease-carrying pathogens. These nylon nets are breathable, durable, and light permissible which can also protect from extreme weather conditions like hail damage. This study includes the following three treatments: 1) Mesotunnel with proteknet, 2) Organic insecticides, and 3) Control (no mesotunnel or organic insecticides). Mesotunnel treatment resulted in less pest damage (No.of holes/plant) with a mean 14 when compared to organic insecticides which had mean damage of 22. A significant difference was observed in pest damage between the treatments. Regarding marketable yield, the highest was observed in the Mesotunnel treatment. However, no significant difference was found between the treatments. This study aims to identify the most effective method of pest management in broccoli production while minimizing the environmental impact through reduced reliance on pesticides. Keywords: mesotunnels, proteknet, excludenet, organic pesticides
