In his research project entitled Open Pollinated Corn trials, Herb Reid has been searching for characteristics in heritage varieties that farmers may find valuable. Coincidentially, I’ve been reading Dan Barber’s The Third Plate: Field Notes on the Future of Food, and he begins his book with the arrival in the mail of a corn cob from a rare-seeds collector. Eight Row Flint Corn once was the dominate variety in New England, known for its distinctive, marvelous flavor, but it has long since been replaced by hybrid varieties. The seed collector asked if Dan would try growing the heritage grain. That next fall, he ground up a successful crop of Eight Row Flint and was delighted with the flavor and aroma of the polenta he served up. It became another unique offering for his popular restaurants.
Herb has been growing heritage breeds with colorful names –Hickory King, Reid’s Yellow Dent, Bloody Butcher, CheroWhite Eagle, and Kentucky Butcher. He asked those in attendance to look carefully and tell what is the difference between the heritage varieties and a modern hybrid variety planted nearby. We were slow to note the differences so he pointed out the different heights of the corn within the heritage varieties vs. the hybrid corn that was much more uniform in size. It was quite obvious once he pointed it out. His work will be important for farmers seeking heritage grains that are uniquely suited to this climate or produce grain that meets local market needs.
Bob Kratochvil, Extension Agronomist, began his presentation on his research project Corn Nitrogen Use Efficiency (NUE) & Cropping Sequence Effects by pulling out two soybean plants and asking attendees to describe what was the difference between the two. As most of us were scratching our heads, a young person spoke out that one of the plants had little “round things” (nodules) on its roots. Bob grinned and confirmed that was the difference. Soybeans usually fix nitrogen in the nodules in their roots. They had produced soybeans without nodules to help determine how much nitrogen residue was left after corn was grown on the fields the previous year.
State legislation does not allow fall fertilizer to be applied on wheat that is planted after corn is harvested unless a soils test indicates very low levels of nitrogen. One of Bob’s research projects will help to determine if there is enough nitrogen left for the wheat crop and the soybeans without nodules will help him do that.
Next, researchers have been conducting studies on the most effective use of cover crops to reduce weeds in vegetable crops. Their take home messages:
- Integrating cover crop residue with No Tillage provides the best weed control and requires the least amount of energy input and cost.
- Better weed control from Strip Tillage can be achieved if the initial weed flush is controlled in plant rows prior to planting.
- Increased crop Carbon:Nitrogen ratio may help reduce weed density no matter which tillage is used.
I wrap up this post with a wonderful project emerging from College Park. The University of Maryland students raised funds and awarded a grant of $124,000 toward the staffing of a Terp Farm at the Experimental Station. Produce will be used at the college cafeterias.
In front of a new high tunnel donated by RIMOL Greenhouse Systems, Guy Kilpatrick proudly presented the structure he assembled in the spring. He will be in charge of food production in this and future high tunnels and on another couple of field acres at the Station.
Guy said that earlier in the week he met with the University cafeteria chefs and they discussed what changes will need to be made to the kitchens to accommodate the locally produced food. These changes will make it easier for area farmers to sell to the University. The Terp Farm will also give University agronomy students the opportunity to work on the farm.
To conclude, I learned about old seeds, new approaches, and a new way for an old land-grant university to connect to its agrarian roots on the Twilight Crops Tour!