![]() The elemental form of S must be oxidized to the sulphate form before it is available to the crop. Ammonium sulphate supplies a readily available form of sulphate. Plants take up S in the sulphate form (SO4=). ![]() When soil testing information is not available and the soil is thought to be marginally deficient in S, N and S should be added in a ratio of 7:1 for canola and 10:1 for wheat. The ratio in the soil should always be lower than that required by the plant to ensure adequate N:S ratios in the plant.Ī soil and plant tissue analysis will help identify the need for additional S and the rate required. To obtain the optimal plant N:S ratios, soil N:S ratios should be between 5:1 and 10:1, depending upon the crop grown. N:S balanceĭepending on the crop and its growth stage, optimal nitrogen (N) to sulphur (N:S) ratios range between 7:1 and 15:1. Deficiencies are also noted on soils with a relatively long history of canola or alfalfa production in the rotation. Generally, S deficiencies occur on soils that are coarse textured (sandy), well drained and/or low in organic matter. In canola, the leaves may cup inwards and develop a reddish or pink colouration on the underside of the leaf. Typically, S deficient crops are spindly, later maturing and the younger leaves are pale green to yellow in colour. Critical to growth, S plays a major role in the formation of proteins, enzymes, chlorophyll and effective nodulation. It is often forgotten in the fertility program, yet most crops utilize as much S as phosphorus. Sulphur (S) is considered to be the fourth major nutrient required by plants. NH3 can be a 4R fertilizer for your farm: the Right fertilizer applied at the Right Rate and Right Time – and the Right depth. The soil clay and organic matter will very quickly trap and retain applied NH3, but you still need good soil conditions and closure behind each bander. Common sense must prevail when selecting a depth to set an NH3 applicator. For most soils, an application depth of 8-10 cm is enough to prevent loss. We don’t need to apply NH3 very deep, which is sometimes assumed. This study and others determined that nearly all NH3 is contained within a 5 cm radius from the centre of the application band.įurther work with soil cores by Les Henry and Dale Tomasiewicz confirmed that NH3 bands are contained in soil in a narrow radius in both wet and dry soils. There have been numerous studies to measure depth and movement of NH3 in Western Canada, including the research of Les Henry and Terry Hogg which measured NH3 movement behind farm applicators at rates of 35 to 150 lb N per acre. In the spring, we should be thinking about the Right placement of NH3 in the soil.Ĭonsider that NH3 must be placed in a band beneath the soil – that’s the Right place for any nitrogen fertilizer to avoid loss as a gas or leaching and to protect the nitrogen from ‘immobilization’ by bacteria as last year’s crop residue decays. For NH3 to be a good choice of crop nutrition for a farm, it needs to fit within the parameters of 4R Nutrient Stewardship agronomy – the Right fertilizer applied at the Right rate, at the Right time and at the Right place in the soil. Nutrien Ag Solutions supplies growers with NH3 from many of our locations, primarily in the northern Prairies. ![]() "Branding and colours is not what's important to the grower, and not what's important to our farmer customers around the country," he said.Many farms in Western Canada rely on anhydrous ammonia (NH3) fertilizer as the main source of nitrogen for their crops. Mr Clayton said although his staff would no longer be wearing their well-known green shirts in the nation's saleyards, he was confident the new brand would be well received. Subscribe for the national headlines of the day. There will also be sub-brands created for Nutrien's livestock, wool, equine, and water businesses. The company has confirmed around 400 of its corporate-owned and joint-venture rural stores will be rebranded across Australia over the next 12 months, with a further 300 independent stores to remain under the CRT brand. "I want people to know that we have tentacles right across the world looking for the best solutions for our growers, and giving opportunities for our employees." A new era for rural retail "Fifty-one per cent of millennials said they would like to have an option to work for a global business, and this is a global business and I want to make sure that we don't hide that fact. "Agriculture is a global business, and we wanted to make sure that we have a strong connection to the global business going forward," he said.
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