Add To Soil For Vegetable Garden. It should not be too heavy ie. CANNA is the Dutch expert in cultivating plants in cocoponics hydroponics potting mixes.
It will ruin your topsoil and the plants. There are a few things you can add to your soil to get the nitrogen levels back up. Adding sand to clay soil is very important and is known to improve water retention levels.
Just remember not to put too much of this particular fertilizer or youll have a difficult time growing vegetables.
Cover crops from the legume family such as clover and vetch also add nitrogen to the soil. It should not be too heavy ie. Another one of the best soil amendments for a vegetable garden is this one. The Peanut Butter Jar Soil Test for Sand Silt and ClayThis should take about 1 hour to set up and a full day to conclude.