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Hot Manure!
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<blockquote data-quote="Dave" data-source="post: 71926" data-attributes="member: 498"><p>Cow manure is generally not "hot enough" to burn plants. Fresh cow manure tilled into the soil will work just fine. Now you might want to wash off the carrots or other root crops real good if grown in fresh manure but that is a bacteria issue not nutrients. </p><p>The nitrogen in manure comes in three forms. Ammonium (and ammonia), nitrate, and organic nitrogen. The nitrate is the most plant available form but is in the lows concentrate being less than one percent of the total nitrogen in cow manure. Organic nitrogen needs to be broken down into nitrate or ammonia by bacteria before it is plant available. This is a slow process that takes time and proper conditions. The organic nitrogen is about 50% of the total nitrogen in cow manure. The ammonium makes up the rest of the nitrogen in cow manure and is the form which can burn plants. If it is tilled into the soil there is very little chance of it burning new plants. You would probably have to bury the plants in manure before there would be enough ammonium to burn them.</p><p>If you allow manure to rot, compost, etc you will lose most if not all of the ammonium and nitrate. This will cause you to lose half of the available nitrogen that you originally had. </p><p>Chicken manure on the other hand can burn plants. This is because it has three times the nitrogen of cow manure to start with and a much higher percentage of the nitrogen is in the form of ammunium. Just stand down wind of where chicken manure is being spread and inhale. There is a much stronger ammunium smell than cow manure. </p><p>I just cleaned off the slab at the heifer barn last weekend and put it all (18 loader scoops full) straight on my garden. It is about 3 inches thick now. I will till it into the soil in a week or two. I do this every year and I grow a great garden. </p><p>Dave</p></blockquote><p></p>
[QUOTE="Dave, post: 71926, member: 498"] Cow manure is generally not "hot enough" to burn plants. Fresh cow manure tilled into the soil will work just fine. Now you might want to wash off the carrots or other root crops real good if grown in fresh manure but that is a bacteria issue not nutrients. The nitrogen in manure comes in three forms. Ammonium (and ammonia), nitrate, and organic nitrogen. The nitrate is the most plant available form but is in the lows concentrate being less than one percent of the total nitrogen in cow manure. Organic nitrogen needs to be broken down into nitrate or ammonia by bacteria before it is plant available. This is a slow process that takes time and proper conditions. The organic nitrogen is about 50% of the total nitrogen in cow manure. The ammonium makes up the rest of the nitrogen in cow manure and is the form which can burn plants. If it is tilled into the soil there is very little chance of it burning new plants. You would probably have to bury the plants in manure before there would be enough ammonium to burn them. If you allow manure to rot, compost, etc you will lose most if not all of the ammonium and nitrate. This will cause you to lose half of the available nitrogen that you originally had. Chicken manure on the other hand can burn plants. This is because it has three times the nitrogen of cow manure to start with and a much higher percentage of the nitrogen is in the form of ammunium. Just stand down wind of where chicken manure is being spread and inhale. There is a much stronger ammunium smell than cow manure. I just cleaned off the slab at the heifer barn last weekend and put it all (18 loader scoops full) straight on my garden. It is about 3 inches thick now. I will till it into the soil in a week or two. I do this every year and I grow a great garden. Dave [/QUOTE]
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