Wenjing Guan

Wenjing
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

463 articles by this author

Article List

I often receive questions on how much water should apply to high tunnel tomatoes. Even the most experienced tomato growers could sometimes lose yield because of overlooking irrigation management. In this article, I describe a case study of how we use soil moisture sensors for irrigation management in a high tunnel tomato production system. This…Read more about A Case Study: Irrigation Management in High Tunnel Tomato Production[Read More]


Strawberries are traditionally grown with a matted-row system in Indiana. Plasticulture is relatively new. It brings market opportunities and potentially high profit. However, growing strawberries in plasticulture is much more expensive than the matted-row system. Farmers need a good understanding of the system to avoid significant economic loss. In the Strawberry Chat Podcast episodes, you…Read more about Farmers Shared Experiences in Plasticulture Strawberry Production[Read More]


The harvest season may not have ended yet; it is time to plan for the new planting. This article summarizes options for planting materials and considerations for plasticulture-grown strawberries in the region. Purchasing plug plants Plug plants are like vegetable transplants with actively growing root systems. Plug plants are much easier to establish than bare-root…Read more about Plug? Bare-root? What Other Options for Plasticulture Strawberry Planting? [Read More]


High Tunnel and Urban Farming Research and Demonstration will be highlighted at the field day. Researchers will discuss: High tunnel tomato and cucumber diseases (Dan Egel, Purdue) High tunnel cucumber two-spotted spider mites and management (Leslie Aviles and Laura Ingwell, Purdue) High tunnel tomato production and benefits of using companion plants (Samantha Willden, Laura Ingwell…Read more about Southwest Purdue Agricultural Center Field Day Registration Open[Read More]


Tomatoes need a consistent water supply when they start to bloom and set fruit. As plants grow more foliage and have more fruits set, their water needs increase. As a result, the irrigation amount must steadily increase to maintain the consistent soil water content and the water supply to the plants. What would happen if…Read more about Tomatoes Need a Consistent Water Supply[Read More]


Plasticulture strawberry harvest has kicked off in southern Indiana. These plants went through a winter of temperature ups and downs and survived the unexpected frosts in April. Finally, it is harvest time! This article’s title is a question from a grower. The straightforward explanation is that plants received more sunlight and warmed up faster on…Read more about Why do the East Side of My Strawberry Rows Have Way More Ripe Ones than the West Side?[Read More]


Most of us know a temperature lower than 32°F would kill tender vegetables like tomatoes, peppers, melons, and cucumbers. Home gardeners would wait to plant those crops after the last frost passed, but commercial farmers may take the risk of planting earlier to capture early-season premium prices. Farmers use various strategies, i.e., high tunnels, low…Read more about Check Soil Temperatures Before Planting Cold Sensitive Crops[Read More]


Frost/freeze damage is one of the major risks of growing strawberries in Indiana. During the morning of April 24, a widespread freeze event caused damage to several crops, including strawberries. Strawberries in southern Indiana, particularly on plasticulture, have entered full bloom. Without protection, freeze damage was extensive in some fields. A case study was described…Read more about Strawberry Crop Update[Read More]


We are excited to announce that the Southwest Purdue Agricultural Center Field Day is scheduled for June 28, 2023, at the Southwest Purdue Agricultural Center (SWPAC), 4669 N. Purdue Rd. Vincennes, IN. Purdue researchers and NRCS representatives will present their current research and demonstration projects in fruit and vegetable production conducted at SWPAC. The topics…Read more about Southwest Purdue Agricultural Center Field Day _Registration Now Open![Read More]


The most recent two podcast episodes of the Strawberry Chat focus on spring weed and disease management. Spring Weed Management Podcast Kevin Schooley and Stephen Meyers joined the discussion to talk about weeds and weed management in matted-row and plasticulture strawberry production. Steve spoke about weeds commonly seen in strawberry fields and gave us a…Read more about Strawberry Podcasts on Spring Weed and Disease Management[Read More]