Basic Aspects of High Tunnel Soil Fertility Management – (Petrus Langenhoven, plangenh@purdue.edu, 765-496-7955) – Spring has arrived! Every high tunnel grower is now thinking of planting summer vegetable crops in high tunnels or has already planted. Whichever scenario applies to you, I hope that you have submitted soil samples or are in the process of[Read More…]
Two types of injury on young warm-season vegetable plants are caused by low temperatures: frost/freezing injury and chilling injury. Frost/freezing injury occurs when temperatures drop below 32°F. Ice formation in plant tissues cut cell membranes. When the tissue thaws, the damage results in fluids leaking from the cell, causing water soaked damage. Frost/freezing injury is[Read More…]
This disease was recently observed in a tomato greenhouse. This article will review tomato spotted wilt virus symptoms, biology and management. Tomato spotted wilt virus (TSWV) and the closely related Impatiens necrotic spot virus (INSV) are usually observed in greenhouse or high tunnel situations. Both TSWV and INSV affect many hosts, including vegetables and flowering[Read More…]
Chilling injury occurs when temperatures are above 32°F and below 55°F. The plant tissue becomes weakened that leads to cellular dysfunction. The most noticeable visual symptom of chilling injury is leaf and hypocotyl wilt (Figure 1). This is caused by the rapid decline in the ability of roots to absorb and transport water. It also[Read More…]
Bacterial wilt is a serious pest of cucumbers and melons. This disease is caused by the bacterium, Erwinia tracheiphila. However, it is spread by the striped or spotted cucumber beetle. Most management schemes have concentrated on controlling the cucumber beetle in order to lessen the severity of bacterial wilt. Currently, management of bacterial wilt often[Read More…]
Dual Magnum® has had a special local needs (24C) label in Indiana for use on transplanted bell peppers and other vegetables for a number of years. Last week the label was amended to include additional small fruit and vegetable crops, including asparagus. The new 24C label is available on the National Pesticide Information Retrieval System[Read More…]
Inspections of produce farms for compliance with the Food Safety Modernization Act Produce Safety Rule (PSR) are set to begin in July 2019. Passage of SB 331 in the Indiana General Assembly in 2018 gave the Indiana State Department of Health (ISDH) PSR enforcement authority in Indiana, making them the lead agency for inspections. SB[Read More…]
March has been welcoming Indiana like a lion with below-normal temperatures and a combination of above and below normal precipitation (see figure). Snowfall accumulated across the state ranging from less than 1” in the southwest and northwest to as much as 3-4” in the southeast part of Indiana. This precipitation has caused drought to be[Read More…]
Midwest Vegetable Production Guide for Commercial Growers 2019 update-The on-line version of this guide has been updated. See below and update your hard copy. Page Comment 1 Add “Anthony Hanson, IPM program” under contributors, University of Minnesota 117 Under powdery mildew, last sentence in disease notes-“Protect pumpkin vines until approximately 21 days from last harvest.”[Read More…]
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