Chemical Fertilisers canvas print by Martyn F. Chillmaid/science Photo Library. Bring your artwork to life with the texture and depth of a stretched canvas print. Your image gets printed onto one of our premium canvases and then stretched on a wooden frame of 1.5" x 1.5" stretcher bars (gallery wrap) or 5/8" x 5/8" stretcher bars (museum wrap). Your canvas print will be delivered to you "ready to hang" with pre-attached hanging wire, mounting hooks, and nails.
Chemical fertilizers. Samples of different chemical fertilizer mixtures. The main elements required by plant life are nitrogen (N), phosphorus (P)... more
Chemical fertilizers. Samples of different chemical fertilizer mixtures. The main elements required by plant life are nitrogen (N), phosphorus (P) and potassium (K). Supplements based on compounds that contain these elements are referred to as NPK fertilizers. Different ratios, and additional trace elements, are used depending on the crop and soil. Clockwise from far left, the N:P:K ratios are: 15:5:20, with 2 parts magnesium (Mg) and 3 parts sulphur (S); 15: 30:15, with trace elements (commercial Miracle- Gro mixture); 12:10:27 with added sulphur, iron (Fe) and maganese (Mn); 1:1:1; and 16:8:13 with 2 parts Mg (tomato fertilizer).
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