We were inspired to try no-tilling vegetables into cover crops after attending the Groffs’ field day in 1996. No-tilling warm season vegetables has proved problematic at our site due to the mulch of cover crop residues keeping the soil too cool and attracting slugs. We thought that no-tilling garlic into this cover crop of oats and Canadian field peas might be the ticket as garlic seems to appreciate being mulched.
Over the last twenty plus years of intensive vegetable growing at Tobacco Road Farm in Lebanon, CT, we have constantly sought ways to improve the health and vitality of our crops and soils. Much of the land grows vegetable crops year round so the intensity of production demands very careful soil care. Over the last several years a system was developed on the farm which has proven to be quite successful. The various methods are still being fine tuned; but with a high level of success and it seems appropriate to share what has been done.
Cultivating Questions: No-till, No-herbicide Planting of Spring Vegetables Using Low Residue Winter-killed Cover Crops
from issue: 38-3
Ray Weil and Natalie Lounsbury’s pioneering work with forage radishes at the University of Maryland could provide a solution to the vegetable grower’s winter cover crop dilemma. When planted in August, forage radishes suppress winter weeds and scavenge left-over nitrogen keeping nutrients out of groundwater. Succulent radish tissue melts away quickly when the ground thaws leaving dark soil to absorb spring warmth and little residue to interfere with planting equipment. Quickly decomposing radishes might also release nitrogen when early vegetables need it.
Fearing that the topic of low-till weeds and mulch-loving slugs may not be of general interest, we have made an extra effort to select material on this esoteric subject which demonstrates the problem solving skills necessary for the success of any sustainable farm system. We begin this column by looking at our own problem solving efforts to reduce the population of cool season weeds and high moisture mollusks in the bioextensive market garden, and how we have integrated the resulting cultural practices into the new and improved version of our cover crop/tillage rotation.
Originally developed in the Midwest as an alternative to chemical no-till which aided soil warming and mechanical weed control, we adapted ridge-tillage to horsedrawn market garden production by attaching the rough equivalent of a ridge-till sweep to the middle of the riding cultivator. We initially used a cast-off roto-tiller middle buster found on the farm, then upgraded to a heavier duty customized 12” sweep, and finally settled on a 10” furrower purchased from Agri-Supply.