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Lime grows grass
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<blockquote data-quote="Global ovine" data-source="post: 7397064" data-attributes="member: 493"><p>When urea is applied to dry ground over 60% of the N can go as ammonia. Better to burn the money as it costs less as no labour and diesel involved. The chemical reaction with lime can be greater if in contact when moist.</p><p>Apply urea when immediate weather forecast says rain.</p><p></p><p>Regarding the discussion about lime quality: Beware of crushed limestone if the rock is hard limestone. Marble (the hardest form of calcium carbonate) may have the highest reading of the active ingredient to neutralise acidic soils, but is not soluble in soil moisture. Michelangelo's chips from carving "David" probably haven't dissolved yet, but some lower calcium carbonate lime stone can be very reactive because it readily dissolves. </p><p>A quick test is to put a tea spoon of the lime product in a glass of water. Stir for a minute and leave overnight. If most is in suspension the next day it's a goodun, if mainly all still sitting on the bottom it is better used on driveways. </p><p>Harder limestone needs to be very finely ground......like icing sugar. In the old days these were roasted in a kiln to form burnt lime (highly reactive).</p></blockquote><p></p>
[QUOTE="Global ovine, post: 7397064, member: 493"] When urea is applied to dry ground over 60% of the N can go as ammonia. Better to burn the money as it costs less as no labour and diesel involved. The chemical reaction with lime can be greater if in contact when moist. Apply urea when immediate weather forecast says rain. Regarding the discussion about lime quality: Beware of crushed limestone if the rock is hard limestone. Marble (the hardest form of calcium carbonate) may have the highest reading of the active ingredient to neutralise acidic soils, but is not soluble in soil moisture. Michelangelo's chips from carving "David" probably haven't dissolved yet, but some lower calcium carbonate lime stone can be very reactive because it readily dissolves. A quick test is to put a tea spoon of the lime product in a glass of water. Stir for a minute and leave overnight. If most is in suspension the next day it's a goodun, if mainly all still sitting on the bottom it is better used on driveways. Harder limestone needs to be very finely ground......like icing sugar. In the old days these were roasted in a kiln to form burnt lime (highly reactive). [/QUOTE]
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