THE POTASSIUM STATUS OF SOME PACIFIC ISLAND SOILS

Authors
GANGAIYA P MORRISON RJ
Citation
P. Gangaiya et Rj. Morrison, THE POTASSIUM STATUS OF SOME PACIFIC ISLAND SOILS, Communications in soil science and plant analysis, 29(1-2), 1998, pp. 179-192
Citations number
27
Categorie Soggetti
Agriculture Soil Science","Plant Sciences",Agriculture,"Chemistry Analytical
Journal title
Communications in soil science and plant analysis → ACNP
ISSN journal
00103624
Volume
29
Issue
1-2
Year of publication
1998
Pages
179 - 192
Database
ISI
SICI code
0010-3624(1998)29:1-2<179:TPSOSP>2.0.ZU;2-W
Abstract
The potassium (K) status of 22 soil samples from 12 pedons originating in 6 Pacific Island countries has been investigated by several techni ques. The total K contents of the soils studied were found to be low t o very low. Use of various methods available for measuring exchangeabl e cations in soils showed exchangeable K to be dependent on factors su ch as ionic strength and displacement cation of the extracting solutio n. The proportions of nonexchangeable K that are plant available were found to be very low for most soils. Data obtained from quantity/inten sity measurements suggest that the soils would be responsive to added K.