Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES   2004 , Volume 18 , Number 1; Page(s) 0 To 0.
 
Paper: 

THE CORRELATION OF K QUANTITY-INTENSITY PARAMETERS WITH K EXTRACTED BY CHEMICAL METHODS AND GARLIC INDICIES IN SOME SOILS OF HAMADAN

 
 
Author(s):  HOSSEINPUR A.R., BIABANAKI F.
 
* 
 
Abstract: 
Quantity-intensity (Q/I) curves and their parameters are among the methods of determining soil K status. The objectives of this work were to study the correlation of Q/I parameters with K extracted by chemical methods and garlic (Allium aestivum) indicies in 8 soils from Hamadan Province. Soil samples were equilibrated with solution containing different potassium activity ratios. Changes in K concentration in the equilibrium solution were plotted against activity ratio of K, and Q/I parameters were determined. Available K was determined by 13 chemical extractants. The results showed variations in soils with respect to Q/I parameters. Activity ratio at equilibrium (ARk) was significantly correlated with K extracted by 0.1 M BaCl2, 0.05 and 0.1 M HCl, 1 M sodium acetate, 0.025 M H2 SO4, and distilled water. Labile K (ΔK) was significantly correlated with K extracted by 0.1 M BaCl2, citric acid + stroncium chloride, Mehlich 1, 0.05 and 0.1 M HCl, 1 M sodium acetate, 0.025 H2SO4 and distilled water. Labile K was significantly correlated with ARk . Slowly exchangeable K was significantly correlated with K extracted by DTPA and NH4OAC. Potassium buffering capacity was significantly correlated with CEC. The results of pot experiment showed that KΔ was significantly correlated with K concentration, relative yield and response and ARk were significantly correlated with K concentration, K uptake, relative yield and plant response. Other Q/I parameters were not significantly correlated with plant indicies. Labile K and ARk critical levels for 90 percent relative yield of garlic were 65 mg kg-1 and 10 (mmol L-1)0.5, respectively.
 
Keyword(s): POTASSIUM, QUANTITY-INTENSITY, EXTRACTANT, GARLIC
 
References: 
  • ندارد
 
  Yearly Visit 73
 
Latest on Blog
Enter SID Blog