By Food and Agriculture Organization of the United Nations
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Extra resources for Fertilizers and their Use
Maize Hybrid varieties in Indonesia: 120 to 180 kg/ha N, 45 to 60 kg/ ha P2O5 and 30 to 60 kg/ha K2O. Local varieties: 45 to 90 kg/ha N, 30 to 45 kg/ha P2O5 and up to 30 kg/ha K2O. N in two or three split applications, all the P2O5 and K2O with the first N application at sowing. Most of the data given here are adapted from the ‘IFA World Fertilizer Use Manual’, IFA, Paris 1992. 7 24 Sorghum and Millets Under wet, medium yield conditions: 20 to 60 kg/ha N, 20 to 40 kg/ha P2O5 and 20 to 50 kg/ha K2O.
Most governments have established strict regulations through the Ministry of Agriculture or other authorities, on the type of fertilizer bags (or containers) in which mineral fertilizers are delivered to the farmer and how they have to be labeled. The information on the label comprises the nutrient (primary and/or secondary and/or micronutrients), the contents of the fertilizer (in most cases also the nutrient forms) and indicating the analysis or grade. The primary nutrients are commonly expressed as percent N-P2O5-K2O (sometimes with the addition of Mg-S-trace elements).
20 days after transplanting 75 kg/ha N, 70 kg/ha P2O5 and 180 kg/ha K2O are applied; and about 35 days after transplanting another 75 kg/ha of N. Sugar cane Recommendations given for the subtropical region in India: 100 to 250 kg/ha N (three split applications per year after planting), 60 kg/ha P2O5 (as per requirement) and 80 kg/ha K2O. Banana For good average yields in Côte d’Ivoire (acid soils) the recommendations, in addition to liming, are 300 to 500 kg/ha N, 30 to 100 kg/ha P2O5 and 600 to 1200 kg/ha K2O.