Petrus Langenhoven

Horticulture and Hydroponic Crop Specialist
Department of Horticulture and Landscape Architecture
Petrus Langenhoven's website

178 articles by this author

Article List

Nominations are now being accepted for farmers to serve on local U.S. Department of Agriculture (USDA) Farm Service Agency (FSA) county committees. These committees make important decisions about how federal farm programs are administered locally. All nomination forms for the 2024 election must be postmarked or received in the local FSA office by Aug. 1,…Read more about Indiana Farm Service Agency Seeking Nominations for Farmers to Serve on Local County Committees[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue is packed with invaluable information. Our featured article focuses on Food Safety Considerations for Vegetable Farms. This issue also includes our insect and weed spotlight articles. We also examine Marketing and Social Media for…Read more about From The Editor’s Desk[Read More]


The Produce Safety Alliance is offering an additional pilot of the Spanish Language Online Grower Training. This pilot course will be offered at no cost to the participants and is specifically for Spanish-speaking growers. If you know of any growers who would benefit from participating in an Online Grower Training, please contact Mariana Villarreal Silva…Read more about Seeking Spanish-Speaking Growers for Online PSA GT Course Pilot[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue features our insect and weed spotlight articles. We also examine June-bearing strawberries and the weather and get updates on auction prices from the Clearspring Produce Auction. The newsletter also includes updates regarding upcoming field…Read more about From The Editor’s Desk[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue features articles on potato insect pests and includes an insect spotlight article on Syrphid flies. We also examine the weather and get updates on auction prices from the Clearspring Produce Auction. Website Links Frequently,…Read more about From The Editor’s Desk[Read More]


We are happy to announce that Purdue Extension is presenting its annual Small Farm Education Field Day on July 25, 2024, at the Purdue Student Farm, West Lafayette, IN. Registration is now open! Register here: Purdue Small Farm Education Field Day The program is now available. Download HERE. SF2024_FIeldDay_Demo_Schedule SF2024_FIeldDay_Demo_Descriptions Contact Lori Jolly-Brown or Petrus…Read more about Purdue Small Farm Education Field Day on July 25, 2024 – Register Now![Read More]


We are happy to announce that Purdue Extension is presenting its annual Fruit and Vegetable Field Day on July 18, 2024, at the Throckmorton/Meigs Horticulture Farm, Lafayette, IN. Registration is now open! Register here: Purdue Fruit and Vegetable Field Day The program is now available. Download HERE. Fruit and Veg Field Day 2024_Agenda FINAL_page1 Fruit…Read more about Purdue Fruit and Vegetable Field Day on July 18, 2024 – Register Now![Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue features articles on planning for fall and winter production in high tunnels, spotlight articles on flea beetles and Palmer amaranth, a new SpartanĀ® label, and suggestions for vegetable disease management. We also examine the…Read more about From the Editor’s Desk[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue features articles on integrated insect management strategies, spotlight articles on cucumber beetles and dandelions, and research results from a sweet potato weed management study and a consumer study about salad mixes. We also take…Read more about From the Editor’s Desk[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue is packed with information. We are featuring several articles on weeds, including weed management in vegetable systems, how insects benefit from winter weeds, and a weed spotlight article on Common Chickweed. The insect spotlight…Read more about From The Editor’s Desk[Read More]