Dear Vegetable Crops Hotline readers, Firstly, I want to let you know the status of a few Purdue Extension Events related to fruit and vegetable growers. That PSA Grower Training in LaGrange County that was planned on March 20 was canceled due to concerns about the spread of coronavirus (COVID-19). A Strawberry Workshop that planned[Read More…]
One concern for every vegetable grower is finding solutions to pest management problems quickly. An example would be anthracnose of watermelon. You recognize the disease or you have had it officially diagnosed. Or perhaps you anticipate this disease every year and want to start applications of a fungicide early in the season. Where do you[Read More…]
As you prepare to fill your high tunnels and greenhouses or even field plots, take a close peek at the weeds in your area. There can be some sneaky pests that have overwintered on the plant material in and around your farm. In high tunnels in particular, I have recently found overwintering populations of two[Read More…]
While not a new technology, I thought it timely to talk about the use of yellow sticky cards as a monitoring tool. These cards will not manage insect pests in your crops, but can be a very valuable monitoring tool in high tunnels and greenhouses. Many of the insect pests that migrate into our crops[Read More…]
We know from published research that the health and quality of a vegetable transplant affects how it will establish, grow, and yield in the field. Our recent work comparing tomato and cucurbit seedling growth in different organic growing media and with and without added fertilizer has provided some good examples of this. See Vegetable Crop[Read More…]
When houseplants and garden seedlings are kept too wet, roots can rot and the fungus that grows in the soil can feed fungus gnats. For houseplants, fungus gnats are usually just a nuisance. When growing seedlings or in a greenhouse adults can spread fungal diseases to flowers. Larvae can spread fungal diseases when they feed[Read More…]
While many growers use high tunnels to extend the growing period for warm-season crops such as tomatoes or cucumbers, it is also possible to grow cool-season crops such as spinach well into winter. The winter over much of Indiana has been rather mild; spinach and other cool-season crops should be doing well. However, disease and[Read More…]
In the October 2019 issue of the Vegetable Crops Hotline, I referenced the new regulatory changes to herbicides containing the active ingredient paraquat. One of the new requirements is for closed system packaging. To quote the Environmental Protection Agency (EPA): “New closed-system packaging (is) designed to prevent transfer or removal of the pesticide except directly[Read More…]
Dear Watermelon Growers, At our past winter technical meeting, several growers suggested fertilizer recommendations need to be reevaluated for watermelon production in our area. This suggestion is timely and critical. We plan to initiate a project for the 2020 watermelon production season to reevaluate the fertility and irrigation practices used in Indiana. We will identify[Read More…]
Meteorological winter (December-February) is finally over and we can start looking forward to spring. Across Indiana, winter brought above average precipitation (Figure 1), though below average snowfall. The temperatures were slightly above normal (2°F-6°F; Figure 2) with no record-breaking cold periods. Since there were so few colder-than-normal periods, the overwintering of pests and therefore increased[Read More…]
It is the policy of the Purdue University that all persons have equal opportunity and access to its educational programs, services, activities, and facilities without regard to race, religion, color, sex, age, national origin or ancestry, marital status, parental status, sexual orientation, disability or status as a veteran. Purdue is an Affirmative Action Institution. This material may be available in alternative formats. 1-888-EXT-INFO Disclaimer: Reference to products in this publication is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in this publication assumes full responsibility for their use in accordance with current directions of the manufacturer.