Wenjing Guan
Vegetable Crops Hotline Editor & Clinical Engagement Associate Professor
Department of Horticulture and Landscape Architecture
Area(s) of Interest: Commercial Vegetable and Melon Production
Wenjing Guan's website
Department of Horticulture and Landscape Architecture
Area(s) of Interest: Commercial Vegetable and Melon Production
Wenjing Guan's website
An average-yielding watermelon crop in an acre accumulates approximately 150 pounds of both nitrogen and potassium in the vegetative tissue and fruit. These nutrients are supplied by the soil’s existing nutrient pool and through supplemental fertilizer applications. Soil testing is a valuable tool for assessing what nutrients are present in soils and the amount of[Read More…]
Crop Status Plug plants set on black plastic mulch in late summer and early fall are approaching full bloom. Some early blooms may have been damaged by recent low temperatures. Moving forward, growers should remain vigilant in protecting these crops from potential frost injury (Figure 3). Bare-root plants that were planted on white plastic during[Read More…]
Many growers have heard about or tried tomato grafting at some point. Some have found that grafted plants make a noticeable difference in plant vigor and yield, and have adopted the practice. Others may not have seen the same benefits and felt the extra effort wasn’t worthwhile. But regardless of initial experiences, grafting is a[Read More…]
Join us for an exciting new endeavor, the Tri-State High Tunnel School, focused on high tunnel production with information to benefit commercial growers, beginning farmers, and educators, among others. It is hosted by Extension Specialists and Educators with Michigan State University, Purdue University, and The Ohio State University. Indiana host locations and contacts: Goshen, IN[Read More…]
Selecting tomato cultivars can be both exciting and challenging, simply because there are so many options to choose from. Some growers settle on a few favorite cultivars and focus on fine-tuning their production practices to suit them. Others prefer to explore new cultivars every year, selecting those that best fit their evolving production systems. Regardless[Read More…]
Passive solar greenhouses are widely used in northern China to grow crops year-round without supplemental heating. My former mentor introduced me to a project by the University of Missouri Extension, where they built a passive solar greenhouse. This past winter, I had the chance to meet Tim Reinbott at a conference and learned that his[Read More…]
This week, we experienced another round of very cold days, with minimum temperatures dropping into the single digits. Under these conditions, row covers are essential for helping plants survive and preventing cold damage even inside high tunnels. The difference in the minimum temperatures inside and outside of high tunnels may not always be significant, as[Read More…]