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Requirements for Good Fertilizer
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<blockquote data-quote="Brisel" data-source="post: 3648084" data-attributes="member: 166"><p>What is your angle on this? If it's just engineering then talking about soil biology probably isn't going to interest you.</p><ol> <li data-xf-list-type="ol">Nutrients. nitrogen, phosphorous, potassium, sulphur, magnesium, calcium etc. How many of these are needed at the same time?<br /> </li> <li data-xf-list-type="ol">When will it be applied? Before sowing - could be bulk commodities of chicken manure ash, compost, farmyard manure, sewage cake, lime. I'd want low ground pressure vehicles that won't damage the soil structure. After sowing - tramline/rowcrop work. I need a granular or prilled form that I can either broadcast to 30 metres from a disc spreader or a liquid to go through the sprayer.<br /> </li> <li data-xf-list-type="ol">Crop height which will determine the machine applying it. <br /> </li> <li data-xf-list-type="ol">Scale determines what size of machine is necessary. I run 2500 acres so have a wide boom sprayer for most of my fertiliser as liquid. P, K, Mg I apply as separate passes usually before planting crops. Top dressing directly onto the growing crop in spring is ususally a blend of N and S. A small grassland farmer will probably use manures topped up with lower grades of bagged fertiliser at much narrower widths. They are more likely to use a blend that provides a greater number of nutirents in one pass.</li> <li data-xf-list-type="ol">Adding fertiliser to irrigation water is less common. Our temparate maritime climate means only high value crops like vegetables are irrigated plus we have very strict laws on contaminating rivers etc with fertiliser, manures, pesticides etc.<br /> </li> <li data-xf-list-type="ol">Europe uses a lot of ammonium nitrate as well as the more common urea. Ammonia/anhydrous is very rare here. Incorporating/injecting fertiliser into the soil is less common here too.</li> </ol></blockquote><p></p>
[QUOTE="Brisel, post: 3648084, member: 166"] What is your angle on this? If it's just engineering then talking about soil biology probably isn't going to interest you. [LIST=1] [*]Nutrients. nitrogen, phosphorous, potassium, sulphur, magnesium, calcium etc. How many of these are needed at the same time? [*]When will it be applied? Before sowing - could be bulk commodities of chicken manure ash, compost, farmyard manure, sewage cake, lime. I'd want low ground pressure vehicles that won't damage the soil structure. After sowing - tramline/rowcrop work. I need a granular or prilled form that I can either broadcast to 30 metres from a disc spreader or a liquid to go through the sprayer. [*]Crop height which will determine the machine applying it. [*]Scale determines what size of machine is necessary. I run 2500 acres so have a wide boom sprayer for most of my fertiliser as liquid. P, K, Mg I apply as separate passes usually before planting crops. Top dressing directly onto the growing crop in spring is ususally a blend of N and S. A small grassland farmer will probably use manures topped up with lower grades of bagged fertiliser at much narrower widths. They are more likely to use a blend that provides a greater number of nutirents in one pass. [*]Adding fertiliser to irrigation water is less common. Our temparate maritime climate means only high value crops like vegetables are irrigated plus we have very strict laws on contaminating rivers etc with fertiliser, manures, pesticides etc. [*]Europe uses a lot of ammonium nitrate as well as the more common urea. Ammonia/anhydrous is very rare here. Incorporating/injecting fertiliser into the soil is less common here too. [/LIST] [/QUOTE]
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