Healthy soils are essential for raising healthy crops. In this Saturday, April 25 workshop at Powisset Farm, 39 Powisset Street in Dover, you will learn the basics of soil composition, microbial life and structure as they relate to the home garden, as well as the nitty gritty on soil testing, amendments and fertilizers needed to maintain crop health each season and build your garden’s soil over time. An annual soil test is invaluable for assessing the quality and nutrient status of your soil so in this hands-on workshop you will learn how to take a representative soil sample, test soil pH, and compaction. We’ll go over the types of soil tests available and how to interpret results for vegetable crops with a soil test in hand. Walk away with a free soil test from the UMass Soil Lab and the skills needed to take your own samples. Instructor Katie Campbell-Nelson leads this Mass Aggie Seminar Series workshop, and the fee is $50. Register online at https://extension.umass.edu/fruitadvisor/mass-aggie-seminars-2015#program%20details.