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  Section: Plant Nutrition » Micronutrients » Nickel
 
 
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Conclusion

 
     
 
Content
Introduction
Discovery of the Essentiality of Nickel
Physical and Chemical Properties of Nickel and Its Role in Animal and Bacterial Systems
  Nickel-Containing Enzymes and Proteins
  Essentiality and Function of Nickel in Plants
  Influence of Nickel on Crop Growth
Diagnosis of Nickel Status
  Symptoms of Deficiency and Toxicity
Concentration of Nickel in Plants
Uptake and Transport
Nickel in Soils
  Nickel Concentration in Soils
  Nickel Analysis in Soils
Nickel Fertilizers
Conclusion
References

Nickel is the latest element to be classified as essential for plant growth in both laboratory and field conditions and an absolute requirement for nickel fertilizer under field conditions in perennial species growing in the southeast of the United States has now been established. Nickel clearly has a significant effect on the productivity of field-grown, nitrogen-fixing plants, those in which ureides are a significant form of nitrogen and those utilizing urea as a primary nitrogen source. The symptoms of nickel deficiency in barley, wheat, and oats observed by Brown et al. (1) and Wood et al. (2) are consistent with the observations made in nickel-deficient animals and are indicative of a role of nickel in nitrogen metabolism that cannot be easily explained through an exclusive role of nickel in urease. This finding in combination with the diverse known functions of nickel in bacteria suggests that nickel may indeed play a role in many, yet undiscovered processes in plants.

 
     
 
 
     



     
 
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