Petrus Langenhoven

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

189 articles by this author

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Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. In this issue, we are highlighting soil moisture deficit issues, irrigation resources, Colorado Potato Beetle damage, herbicide injury identification, and disease issues. Included is lots of information about educational opportunities and news from the Indiana Office…Read more about From the Editor’s Desk[Read More]


Irrigation is now becoming more critical. Temperatures are high, and many areas are experiencing lower-than-normal rainfall. However, I do have some good news for you if you are looking for a source that has a lot of information about irrigation. Lyndon Kelley is an Irrigation Educator for Purdue Extension and MSU Extension, and he maintains…Read more about In Some Areas Irrigation is Now More Critical[Read More]


This article is a news release that was published by the U.S. Department of Agriculture (USDA) on May 18, 2023. The U.S. Department of Agriculture (USDA) will cover up to 75% of the costs associated with organic certification, up to $750 per category, through the Organic Certification Cost Share Program (OCCSP). Indiana Farm Service Agency…Read more about USDA Accepting Applications to Help Cover Costs of Organic Producers[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. Once again, we have a bumper issue. It seems that by Memorial weekend, we can look forward to even warmer days. If you have not done it yet, now is the time to get those heat-loving…Read more about From the Editor’s Desk[Read More]


The Purdue Small Farm Education Field Day is presented on July 27, 2023, at the Purdue Student Farm in West Lafayette, IN. You can still register for the field day. To reserve your spot, visit https://cvent.me/ewWN3b. Registration closes on July 21, 2023. Students register for free! Please contact Lori Jolly-Brown to receive the discount code…Read more about Small Farm Education Field Day – Register Now![Read More]


We are happy to announce that Purdue Extension is presenting its annual Fruit and Vegetable Field Day on July 20, 2023, at the Throckmorton/Meigs Horticulture Farm, Lafayette, IN. Registration is now open. To register your spot, visit  https://cvent.me/5zevYD A complete schedule of demonstrations is now available on the Vegetable Crops Hotline webpage. Look under the…Read more about Purdue Fruit and Vegetable Field Day – Register Now![Read More]


This is an extract from a news release by The Ohio State University. The goal of this online course is to provide hydroponic growers with the knowledge and tools needed to implement best management practices specific to controlled environments (greenhouses, indoor farms, high tunnels, etc.) to reduce microbial food safety hazards in hydroponic vegetable and…Read more about Hydroponic GAPs – Good Agricultural Practices for Food Safety of Hydroponic Crops[Read More]


Extract from a news release by SARE (5/15/2023). Sustainable farming emphasizes the need to consider the environmental, economic and social impacts of agriculture. For decades, sustainable agriculture research has focused more on environmental stewardship and profitability than on personal and social issues. SARE’s newest bulletin, Resilient Farmers, Ranchers and Communities: Social Sustainability in Agriculture, describes how…Read more about Sustainable Agriculture Research and Education (SARE) News[Read More]


The USDA published this news release in Indiana on May 3, 2023. Indiana NRCS Announces First Sign-up Period for Organic Transition Initiative USDA’s Natural Resources Conservation Service’s (NRCS) Acting State Conservationist, David Doctorian, announced today that Indiana is accepting applications for the first round of Organic Transition Initiative (OTI) funding through June 15. The initiative…Read more about Natural Resources and Conservation Service (NRCS) News[Read More]


Welcome to the Vegetable Crops Hotline (VCH), Purdue Extension’s exclusive newsletter for people in the business of growing vegetables. This is, again, a bumper issue. It seems we can look forward to warmer days. Farm activity will increase in the coming weeks as conditions become more favorable for the planting of tender vegetable crops. Remember,…Read more about From the Editor’s Desk[Read More]