FRESENIUS ENVIRONMENTAL BULLETIN, vol.29, no.9, pp.7294-7301, 2020 (SCI-Expanded)
This research was carried out in order to determine the most suitable
method for chemical extraction of available for plant boron content in Tekirdağ
and Çanakkale provinces soils. According to the results, dry matter yield,
boron content and total boron uptake of canola were increased with the
increasing amount of boron applied to the soil. The methods used for predicting
plant available boron content of the soils exposed a high degree of correlation
with the biological indexes. Sixteen chemical extraction methods were ranked
as: DTPA- NH4OAc > 2 mM DTPA > 1 N NH4OAc
(pH: 7) > 1 N NH4OAc (pH: 4.8) > 0.01 M Tartaric acid > Hot
0.01 M CaCl2 > 0.05 M Mannitol (pH: 7.5) > 0.05 M Ammonium Oxalate
> Hot water > 0.05 M KH2PO4 > Total Boron >
0.02 M HNO3 + 30 % H2O2 > 0.05 M Mannitol/ 0.01 M CaCl2
> Cold 0.01 M CaCl2 > 0.01 M Mannitol/ 0.01 M CaCl2
> 5 % Glycerol/ 0.01 M CaCl2. The one of the first six chemical
extraction method in this arrange could be proposed as the best method to
determine the plant available boron content of the soils.