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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Production Systems Research » Research » Publications at this Location » Publication #303822
Title: The physiology of potassium in crop production

Author
item OOSTERHUIS, DERRICK - University Of Arkansas
item LOKA, DIMITRA - University Of Arkansas
item KAWAKAMI, EDUARDO - University Of Arkansas
item Pettigrew, William

Submitted to: Advances in Agronomy
Publication Type: Book / Chapter
Publication Acceptance Date: 2/3/2014
Publication Date: 5/5/2014
Citation: Oosterhuis, D.M., Loka, D.A., Kawakami, E.M., Pettigrew, W.T. 2014. The physiology of potassium in crop production. In: Sparks, D.L. (Ed.), Advances in Agronomy, Academic Press, 126:203-234.

Interpretive Summary:

Technical Abstract: Potassium plays a major role in the basic functions of plant growth and development. In addition, K is also involved in numerous physiological functions related to plant health and tolerance to biotic and abiotic stress. However, deficiencies occur widely resulting in poor growth, lost yield and reduced fiber quality. This review describes the physiological functions of K and the role in stress relief and also provides some agronomic aspects of K requirements, diagnosis of soil and plant potassium status, and amelioration. The physiological processes described include enzymes and organic compound synthesis regulation, water relations and stomates, photosynthesis, transport, cell signaling, and plant response to drought stress, cold stress, salt stress, as well as biotic stresses.