![]() However, there is relatively little concrete commercial development of ‘concentrate mining’. Application of the same extraction processes to desalination concentrate, rather than to unconcentrated seawater, will necessarily be more energetically favorable, so the expansion of seawater desalination in recent decades brings this dream closer to reality. ![]() The ocean has often been announced as a sustainable source of important materials for civilization. Finally, a case will be made for integrated nutrient supply that combines chemical fertilizers with biological and organic sources. Hence, this chapter tends to discuss the problems of soil fertility and productivity, nutrients and mining and imbalance, and inadequate plant nutrients supply in Nigeria’s agriculture, as well as the problems affecting the use of chemical fertilizers, the types, and role of organic sources of plant nutrients. Those management practices applied to one set of soil, plant, or climatic conditions are not applicable to all ranges of conditions. It is also not possible to advance quickly from a moderate soil fertility/plant nutrition status to one that results in high yield or quality product achievement. For most cropping situations, the maximum biological yield potential based on the combination of soil and plant parameters is unknown. Management requirements for achieving a moderate yield and average product quality, require fewer inputs and skill requirements than those required for achieving maximum yield and highest product quality, the latter not allowing for errors in procedural practices. ![]() However, there are basic principles that do apply, requiring moderate modification to suit the specifications of soil type, crop species, and climatic/weather characteristics. It is obvious that none of the soil fertility management systems will meet all these requirements. IG International Limited receives services from other members of the IG Group including IG Markets Limited.Soil fertility management has two requirements: establishing and maintaining the soil pH and essential plant nutrient elemental content within their desired ranges for that soil type and crop or cropping sequence, with its associated cultural management practices. IG International Limited is part of the IG Group and its ultimate parent company is IG Group Holdings Plc. The information on this site is not directed at residents of the United States and is not intended for distribution to, or use by, any person in any country or jurisdiction where such distribution or use would be contrary to local law or regulation. IG accepts no responsibility for any use that may be made of these comments and for any consequences that result. The information in this site does not contain (and should not be construed as containing) investment advice or an investment recommendation, or an offer of or solicitation for transaction in any financial instrument. ![]() IG International Limited is licensed to conduct investment business and digital asset business by the Bermuda Monetary Authority. You should consider whether you understand how this product works, and whether you can afford to take the high risk of losing your money.ĬFD Accounts provided by IG International Limited. CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 75% of retail client accounts lose money when trading CFDs, with this investment provider. The risks of loss from investing in CFDs can be substantial and the value of your investments may fluctuate.
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