Flyers & Leaflets What people are saying - Write a review. That is why we developed Nutriology®, the science of growing. ( as long as the secondary type factors are not limiting). Ship Now. We hope that you and your staff find them useful: * Average grade - *** some with S and/or Mg and/or micronutrients, Area of Distance %K of CEC is calculated as follows: %K = me % K / CEC × 100. For your reference, we have provided the following industry standard fertilizer conversions and calculations. If you are not sure, or have absolutely no idea what you are doing, you can add 500 kg 2:3:2 (22) at the beginning of the season and top-up with 200 kg KNO3 after 3 weeks and again after 5 weeks. To change P2O5 (phosphate) to P Shipping cost: USD 66.96. You have to adapt the table according to your climate, soil history, soil type, planting density, variety and plant date. Where the row and column intersects at high yields, ie. Rate urea = 20 units N ÷ 46%N x 100 = 43.5 kg/ha urea Conversion is easy by dividing each element by the molecular weight as follows: By adding the results together with the hydrogen value we get the CEC of the soil. 1. 1 yard = 0.9144 metre, Weight So nitrogen fertilizer requirements are not calculated using soil analysis, but by yield potential. Our ATC are collecting knowledge and needs on the ground. At the end. Learn more . Products. One has to add a little more to compensate for the non marketable component as they also used up nutrients from the soil. Once we have the % K of the CEC we can calculate the K fertilizer requirement of the crop with the following table. › If you don’t have a soil analysis I will discuss it at the end of the article. This site uses Akismet to reduce spam. Credit. A wide variety of npk fertilizer options are available to you, such as granular, liquid, and powder. 1 acre = 4480 sq. SGS is a global leader in fertilizer analysis and fertilizer testing. Contact SGS for all of your fertilizer testing and analysis needs. Example for field crops fertilization. 302 Mauston WI 53948. The following fertilization recommendation has been given a farmer growing a drip- irrigated squash crop: Basic dressing (as pre-transplant application) of 60 Kg N, 120 Kg P 2 O 5 and 70 Kg K 2 O per hectare. Once you have received the soil analysis report, for instance Bray 1 with 12 mg/kg (or ppm) in the soil you can correlate the fertilizer recommendation with the potential yield, for instance, 30 t/ha beetroot. If the P is very low, one should try and increase it over time by adding a little extra with each application. Our fully-trained technical staff uses industry-standard fertilizer calculations and conversions to provide you with trusted, accurate and reliable results. List of Fertilizer Companies in South Africa . multiply K2O by 0.8302. This in turn could make grain production unprofitable in South Africa, which in the long run could lead to food insecurity in the country. 608-847-9329 or (Along with phosphorous and potassium, nitrogen is one of the three components of minera… It is full of microscopic living organisms such as bacteria, viruses and insects that feed on it and break complex compounds down on which the plants then feed. To change K2O (potash) to K › In the meanwhile, South African fertilizer market is in keen competition. 1 hectare (ha) = 2.471 yards 1 kg/ha = 0.9822 lb/acre The fertilizers are formulated into different mixtures of these three macronutrients and are identified by the three numbers marked on the bags of fertilizer denoting the NPK makeup of the fertilizer and the ratio of their value in the mixture. Only 3 major elements are calculated in open field production since most of the other essential elements are already in the soil at high enough concentrations. We have some great shipping options available. A grower knows this either through experience, gets the info from experienced growers or through literature. These are the ideal levels for P. For every 40 kg P added to the soil, that element’s concentration will increase with 10 ppm, Use the nutrient uptake table above to assist with N uptake per type of crop. A better scientific alternative or a source of confusion? Example 1 . Whether you need exploration, sampling, trade and inspection or laboratory support, our technical experts are here to help you. Fertilizer Calculation Worksheet Background Review The fertilizer elements are present in various compounds (e.g., urea, ammonium nitrate, phosphoric acid, calcium phosphate, potassium chloride). | least supply in the fertiliser for the calculation for rate. 1 kilogram (kg) = 2.2046 pounds 0 Reviews. Not only do the micro-organisms change the soil but mechanical preparation completely changes soil structure. Please share comments or suggestions with Craig Saxe, Juneau County UW-Extension, 211 Hickory Street Rm. multiply P by 2.2914, Potassium The major elements that need to be calculated are. Enter your email address to subscribe to this blog and receive notifications of new posts by email. 8 - 11 working days. Other fertilizer choices can be added or with some additional inputs, the spreadsheet will create a more personalized fertilizer blend. To determine the fertilizer rate for a particular nutrient, multiply the rate of the desired nutrient by 100 and divide by the percentage of the nutrient in the fertilizer. 80 %, so the total amount of P added is 100% x 30 t/ha x 0.75 kg/ton P removed = 22.50 kg/ha of P must be added. Well then you have to use the estimated p uptake of the crop. fertilizer that contains a minimum of 330 g/kg organic fertilizer, excluding urea; 'fertilizer' means any substance which is intended or offered to be used for improving or maintaining the growth of plants or the productivity of the soil; "fertilizer group" means the category under which a particular fertilizer falls. Phosphorus fertilizer calculation for potatoes, Potassium fertilizer requirements according to soil analysis. Don’t use it as is. It was restructured in 2014, when it became known as the Fertilizer Association of Southern Africa (Fertasa). Episode 6 of the Soil Smarts Series focuses on how to accurately calculate the amount of a specific fertilizer product to apply. Due to major fertilizer plants closure in the late 1990s, South Africa is one of net fertilizer importer. They use one of four different methods and it should be stated clearly on the soil analysis report. 1 acre = 0.4047 hectare You might not achieve 100% of the potential yield of your crop, but it will not be a failure. So what happens if you don’t have this complicated table. Ship Now. South Africa; International; Careers; Contact form; ABOUT US. Please read our Privacy Policy as found on our About page. Low crop yields in Sub-Saharan Africa are associated with low fertilizer use. fertilizer is thought to adversely affect quality. 10 - 15 working days. Sorry, your blog cannot share posts by email. You can see from the fertilizer label (above) that our fertilizer EC should be 0.98, so fill this into equation 2: final EC = 0.4 (EC of Cornell tapwater) + 0.98 (EC of fertilizer) final EC = 1.38 mmhos/cm (note that: mmhos/cm = dS/m) Part 2 – Calculations using the percentage of a nutrient in the fertilizer Below is a general estimate of the nitrogen fertilization requirements of potatoes. Suppliers, Distributors, Manufacturers, Importer. If you continue to use this site we will assume that you are happy with it. Yara Fertilizer Industry Handbook This handbook describes the fertilizer industry and in particular the nitrogen part which is the most relevant for Yara. About 49% of these are compound fertilizer, 17% are organic fertilizer, and 14% are phosphate fertilizer. SGS is a global leader in fertilizer analysis and fertilizer testing. Use the cation exchange capacity of the soil. 1 lb/acre = 1.1208 kg/ha, Fertilizer Phosphorous However, too much of the wrong nutrient can have adverse effects and too much fertilizer can burn roots and shoots. South Africa; International; Careers; Contact form . The P level in the soil must be calculated by a lab. Bibliographic information. Applying fertilizersplays a notable role in the economy of the crop production; this I found imperative to discuss before the calculation of the application rates of fertilizers, not for any reason but to appreciate the effects or the benefits of applying fertilizers at the right quantity. At TIMAC AGRO, our passion for agriculture guides us in sharing the ideals and the commitment that we have carried for 60 years. yards You should have an idea of what your yield should be or what yields are potentially realistic in your environment. Effects of fertilizer o… To better understand patterns of, and opportunities for, fertilizer use, location specific fertilizer price data may be relevant. Calculating fertilizer recommendations is an art and not science. Calculating fertilizer recommendations is an art and not science. The cation capacity of the soil is calculated by using 4 essential cations and titratable acid content of the soil. Reading the fertilizer content will give you a clue to how much of each macro-nutrient is contained in the formula as well as any other nutrients, such as calcium and magnesium. Our core capabilities and industry expertise help you to optimize your operational efficiencies, while our global technical leadership helps minimize operational and financial risk. The East and Southern Africa Fertilizer Watch is designed to provide bi-weekly (twice per month) updates to stakeholders throughout 11 countries in the region using data collected around 10 indicators. multiply P2O5 by 0.4364, To change P to P2O5 It is important to know the yield in your area because that will determine the amount of nitrogen removed from the soil. We help you to establish your competitive advantage by offering you unrivaled, unbiased and trustworthy global support for all aspects of your fertilizer operations. Fertilizer consumption (% of fertilizer production) Agricultural land (% of land area) Forest area (% of land area) Cereal production (metric tons) Agricultural land (sq. PDF 257.43 KB. Blends tend to be cheaper but less consistent in quality. 1 meter = 1.0936 yards Calculating fertilizer requirements for a crop is quite often more of an art than exact science. Thoughts on fertilizer calculations. Note that there is a vast difference between tomato and beetroot yields, thus there will be a big difference in P application. Any activity or operation carried out during the process of crop production has economic importance; fertilizer application is not left out. Climate is the biggest influence on yield potential and crop quality. Sign up to SGS publications and newsletters from your region and around the world. The reason is that soil is a dynamic micro world on its own that changes continuously. For instance it has been determined that tomatoes use approximately 0.75 kg P per ton yield. You should be fine, honestly. Fertilizers come in different compounds and blends. Fertilizer use by crop in South Africa Only fourteen percent of the total land area of South Africa receives suffi cient rainfall for arable crop production and periodic droughts affect the rainfed arable areas. The main fertilizer manufacturers are Kynoch, Omnia and Foskor. Our industrial facilities of fertilizer solutions are part of a complete industrial value chain, where each link is essential. Use the nutrient uptake table below to assist with N uptake per type of crop, Since phosphorus (P) does not move a lot in the soil it can be applied in the beginning of the crop season. You might add 30 t/ha organic material today but by the end of the year it will all be gone. Other factors are: And the list can go on. Agriculture and Food Compounds are chemically processed to have all the specified units in one granule, while blends are a physical mixture of different minerals and nutrients in customized proportions. Home. More expensive potassium fertilizers, such as potassium sulphate (40 % K and 18 % S), or potassium nitrate (38 % and 13 % N), are the alternative commercial K fertilizers. If you know that you can achieve 30 t/ha and your potatoes are planted on irrigated land, the recommended total nitrogen application should be ±150 kg/ha. Granular fertilizer Granular Fertilizer. Fertilizers We use cookies to ensure that we give you the best experience on our website. This means that all these nutrients are distributed uniformly across the entire field. For more information on Yara-specific issues please see Yara’s quarterly and Capital Markets Day presentations. We haven't found any reviews in the usual places. SGS has earned a global reputation for the highest levels of integrity, independence and accuracy. Learn how your comment data is processed. Calculation D. Cost per ha = cost/tonne x rate kg/ha (from A) ÷ 1000 Example: In the paddock you need 20 kg/ha N and 20 kg/ha P. Option 1: Urea (46:0:0:0) and single superphosphate (0:8.8:0:11) Apply Calculation A. Each granule in our chemically granulated products contains all the nutrients registered for that product. What are good spray program principles you should follow, Sweet potato fertilizer application tables according to soil types. Let’s assume that a grower wants to plant potatoes. Orders for fertilisers and lime should be placed well in advance of the first till-age operation. The type of fertilizer and spread of application is a totally different matter and will be discussed in a separate article. Potential yields are available from your local seed company, bear in mind that these yields are for the harvested product only and does not include the roots and leaves that are not harvested and sold. DHL - Express Worldwide. These are very rough estimates and over time one will get a good idea of how much P must be added for a specific piece of land. Our core capabilities and industry expertise help you to optimize your operational … For example: 2:3:4 (27) or 1:0:1 (36) will be the NPK value. Fertilizer recommendations can become so technical that even I have lost track. LATEST NEWS. Post was not sent - check your email addresses! Then secondary factors such as soil type, fertilizer etc. Analytical Services Now convert to me% if not already done so. # of fertilizer * % of nutrient = # of nutrient # of urea * 0.46 #N/#urea = # of N # of nutrient / % of nutrient = # of fertilizer # of urea = # of N / 0.46 #N/#urea There are 43,560 ft2 in 1 acre (ac) There are 10,000 2m in 1 hectare (ha) 1 ac = 0.4047 ha; thus, 1 ha = 2.471 ac To download a copy click on the link below. DHL eCommerce - Packet Priority. The reason is that nitrogen fluctuates too much to provide accurate measurements. Start shipping to South Africa with us. At Cedara does not include the trace elements, nor sulphur fertilizer blend can! On Yara-specific issues please see Yara ’ s quarterly and Capital Markets Day presentations it has been determined that use... Other factors are not calculated using soil analysis our ATC are collecting knowledge and needs the. 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