Yes it is. Besides that you have to be using the right fertilizer for what you are planting. Some plants need more of one thing over the other. May I suggest speaking with Daniel, the lead biologist, at Wildlife Management Solutions (www.productsforwildlifemanagement.com), he will help you through the whole thing. You want to stay away from types of crops that are grown in your area. If you want to keep track of some food plots he's helping me with in Illinois, check out photos and step by step instructions from beginning to end at myarcheryhunt.com and click on the food plot progress link.