A black box with a tall orange flag sits in a field.
Vole bait box in a tall fescue field.
Photo credit: Sprout Mahoney

Happy summer, blog readers! This is Sprout Mahoney, a soil science student entering their final year at OSU. I am so grateful I had the opportunity to intern with the OSU Extension office in Linn County. Working with Christy Tanner, the south valley Extension field crops agent, has educated me about how science fits into agriculture and how Extension helps to bring research with the community.

One project I got to participate in is Mint Pest Alert, a publication that goes out to mint growers around Oregon. Every week I visited mint fields to collect insect samples to identify pests and do population surveys. This information is vital for targeting pests at the right time in their lifecycle. Using precision treatments at the proper time helps to prevent broadscale pesticide use that can harm beneficial insects.

I was able to witness another research project happening in a local clover field where treatments for the clover seed weevil were being studied. It was fascinating to see researchers work together during the harvest and weighing of clover seed. Measuring the seed weights of the different plots can determine which treatments led to best yields, and conclusions can be drawn to which treatments were most effective against the weevil.

Aerial images of a field.
Aerial image of a vole bait box (left center) surrounded by healthy and damaged tall fescue plants. NDVI image of the same area (right), with green showing healthy growing vegetation and yellows/reds showing damaged vegetation and bare soil.
Photo credits: Christy Tanner and Sprout Mahoney

Another project was related to gray-tailed moles and their damage to grass seed fields. Vole damage in the Willamette Valley can be extensive and there are limited ways for growers to tackle the vole challenge. The study being conducted is to research the effectiveness of different vole baits and if these baits can be applied in above-ground boxes rather than directly into burrows. The tamper-resistant bait boxes are more cost-effective and also more directed, targeting the voles and limiting the risk of rodenticides to other vertebrate wildlife. I was able to join in multiple visits to tall fescue fields where these boxes were placed with different baits. We measured not only the amount of bait consumed at each plot but also took aerial photographs of the fields by drone. Analyzing this drone footage is another tool being used to measure stand growth and identify areas of greater or lesser damage.

The summer is a busy time for grass seed farmers in the Willamette Valley as they cut, dry, collect and process their crop. While doing field visits, I got to watch the different steps of this process and then research it further as I wrote an article about grass seed harvest for Extension’s “Growing” publication. My article informs the public know what is going on once the combines leave the fields.

I have greatly enjoyed my summer internship and all the activities I have been able to be a part of. The skills I have learned, the information I have gained, and the people who have inspired me will help to shape my future in agriculture. I look forward to continuing my academic and professional journey knowing that the OSU Extension Service is there to help the community in so many ways.

Wide shot of a large mint field with farm in the background under a cloud streaked bright blue sky
Oregon peppermint field
Photo credit: Sprout Mahoney

Hi there! I am Sprout Mahoney, one of this summer’s crop of OSU Extension Service interns. While I have my senior year of Crop and Soil Science coming up, I will be working with Christy Tanner, the Linn County field crops specialist, for the next few months.

I got an early start this spring and have already helped with some research projects. Linn County is known for its grass seed and one of these projects has been based out of a local tall fescue field. Experimenting with different vole baits, observing signs of vole damage, and assessing drone imagery of the field via GIS software have been a few ways my learning has gotten out of the classroom and into some outdoor experience. I’ve assisted with different aspects of the research, from measuring samples to analyzing raw data for meaningful conclusions.

Closeup of a mint plant in a field
Mint plant
Photo credit: Sprout Mahoney

Another research project I worked on got me outdoors into some wonderful smelling mint fields! The peppermint grown in fields often becomes oil, a product that netted Oregon $34 million dollars in 2020. While mint in your garden may not have many pests thanks to its strong taste, the plants out in the field can be troubled by insects like loopers and cutworms. Monitoring these pests means using sticky traps baited with pheromone lures out in different fields and finding trends in their populations. This knowledge can help inform growers about the best times to treat pests and which species to focus on.

I am excited to be interning with Extension and working with local farmers. Agriculture always faces issues and I am interested in understanding people’s struggles and help bring solutions. I am especially looking forward to learning more about GIS applications in agriculture. I always want to know more about our soils!