Tilth

Authors: Sarah Hirsh

Soil health is the status of soil in terms of its ability to function and sustain life. It involves physical, chemical, and biological factors that are all interrelated. Soil organisms are critical for building good soil structure, ensuring air and water movements through the soil, decomposing organic materials, and cycling nutrients. A soil with good physical structure and with sufficient nutrient cycling will encourage increased numbers and diversity of soil organisms. When we manage soil with practices that minimize disturbance, maximize soil cover, maximize biodiversity, and maximize the presence of living roots, we can increase soil health, increasing the sustainability and profitability of agriculture. Author: Sarah Hirsh; Title: Soil Health (FS-2025-0754).

Authors: Natalie Lounsbury - Ray Weil

A late August seeding of forage radish (Raphanus sativus L.) can eliminate the need for tillage before many early spring vegetable crops like spinach, beets, peas, onions, and even carrots under certain soil conditions in Maryland. In addition to reducing soil disturbance, not having to till prior to spring planting reduces labor requirements at a critical point in the season and may allow earlier planting. Forage radish, which winterkills when temperatures drop to 17-20°F, suppresses early spring weeds, allows soil to dry out and warm up, and provides an increased supply of N, S, P and other nutrients to crops in early spring. Because of the minimal amount of residue after forage radish, conventional planting equipment can effectively seed directly into the winterkilled cover crop without tillage. For early transplanted crops like onions, rows of radish can create holes into which transplants can be dropped. Experiment station results in Maryland and farmer trials throughout the mid-Atlantic and northeast have shown that this system requires a closed cover crop canopy in fall and may be ineffective in poorly structured, heavy soils. Authors: Natalie Lounsbury and Ray Weil; Title: No-Till Spring Vegetables After Forage Radish Cover Crop (FS-1134).