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Please tell me how to fertilize one hectare for one year! We don't use acres here, and it is hard for me to understand your formula.

Author: Jim Kennard

I am happy to convert the fertilizer formula into one for feeding a hectare. The application in the garden will be ½ liter per 9 meter row weekly for 4 to 8 times, depending on the crop, and for field crops 1/3rd of the formula is applied three times. First you need the Pre-Plant mix, which is primarily Calcium from lime or gypsum. If you are in the garden, ½ kg (about one liter by volume) tilled into each 9 meter-long row will feed a crop. If broadcasting in the field, we recommend 1100 kg be applied each year. For the Weekly Feed, the goal is to have 125 kg of actual Nitrogen, 68.125 kg of actual Phosphorus, and 125 kg of actual Potassium to feed one hectare of crops for one growing season. This is the starting point, and to get this you have to take whatever compounds you can find where you live and add enough so that you end up with the above amounts of the N, P, and K. For example if you could get 34-0-0, you would need 368 kg (125 divided by .34) in order to end up with 125 kg of nitrogen. If the compound you have available has two (18-46-0, etc), you have to figure them out together. Again, those figures are for a hectare, and when you have the "big three", then you add the other nutrients. Remember, you will be using compounds because we do not find the pure elements occurring naturally. Several of the compounds are available as sulfates. However, if you can get chelated versions they are generally much better, although more costly. In most cases we use the sulfate compound because it is available, relatively inexpensive, and sufficiently water soluble to be available to the plants. For feeding one hectare for a year, you then add 130 kg of Magnesium sulfate, 8 kg of Boric Acid, 4.5 kg of Manganese sulfate, 9 kg of Zinc sulfate, 1.5 kg of chelated Iron, 1.5 kg of Copper sulfate, and .75 kg of Sodium Molybdate. The plants' needs for sulfur are supplied by the sulfate compounds that make up the other componentss. The thirteenth element plants need is chlorine, and that is also supplied as a part of the other compounds.

Last Modified: 2003-11-14         Number of views: 2214

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