Over the years, I have neglected to amend the soil in my vegetable garden and solely relied on tilling in the old crop. It got to the point that over the last few years, my garden failed to grow, often failing to either germinate or and/or grow plants. I took a soil sample and tested it with a home soil test kit and it told me that there was no nitrogen, very little potassium and other nutrients that are required to be present in the soil for growth. I am now at the point that I need to add something to the soil to get it back on track. For the past few years, I have relied on the local nursery for information to no avail. They have pushed me to continue to compost and pushed me to use one of their expensive organic fertilizers and use calcium sulfate each fall to allow the release of nitrogen in the soil. Well, none of this worked for me. I have asked them repeatedly about adding amend or steer manure to the soil but all they tell me is to use their organic fertilizers and calcium. The soil in our area is clay and at one time, our garden was booming with big hearty plants that produced bounty's of big vegetable plants. I am considering buying some bags of steer manure and adding them to the soil. My garden in about 16x14 so I will need about 37 bags to give me about 3 inches of depth in the soil. Am I on the right track or am I missing something that I dont know about? Our sowing and planting season here in North Eastern California is generally after father's day since the threat of frost will be over by then. Yes, we have a short season and the threat of frost usually returns after the first week of September. I would like to hear some advice regarding what to do. Thanks in advance.