Petrus Langenhoven

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

194 articles by this author

Article List

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 Spartan® 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]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This issue features two Spotlight articles: the Weed Spotlight on Deadnettle and the Insect Spotlight on the Two-Spotted Lady Beetle. It also includes a featured article that discusses soil fertility management in high tunnels, ethylene damage…Read more about From The Editor’s Desk[Read More]


NCR-SARE Welcomes Liz Brownlee This article was published by SARE in their news release dated March 21, 2024. NCR-SARE is pleased to announce Liz Brownlee’s appointment as the new Coordinator for the Farmer Rancher Grant Program. Brownlee, who was born and raised in Indiana, brings a wealth of knowledge and expertise to this role. Brownlee…Read more about Sustainable Agriculture Research and Education (NCR-SARE) News[Read More]


Are you looking to enhance your knowledge of soil fertility management in high tunnel farming? Look no further! Let’s explore the crucial aspects of High Tunnel Soil Fertility Management that can help you grow abundant and healthy crops. Spring has arrived, and with it comes the excitement of planting cool and warm-season crops. If you…Read more about High Tunnel Soil Fertility Management: What You Need to Know[Read More]