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Distribution and dynamics of boron in Tunisia

by Ahlem Tlili , Imene Dridi , Naceur Jedidi
Save 12% Save 12%
Current price ₹7,707.00
Original price ₹8,794.00
Original price ₹8,794.00
Original price ₹8,794.00
(-12%)
₹7,707.00
Current price ₹7,707.00

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Book cover type: Paperback
  • ISBN13: 9786209305900
  • Binding: Paperback
  • Subject: N/A
  • Publisher: Our Knowledge Publishing
  • Publisher Imprint: Our Knowledge Publishing
  • Publication Date:
  • Pages: 140
  • Original Price: GBP 69.51
  • Language: English
  • Edition: N/A
  • Item Weight: 195 grams
  • BISAC Subject(s): Life Sciences / Horticulture

Boron is a soil microelement with a narrow margin between deficiency and toxicity. The results show a decrease in available boron with depth for calcareous soils (Luvisol-1, Vertisol, Fluvisol and Cambisol), while they increase in non-calcareous soils (Luvisol-2 and Luvisol-3). Calcareous soils contain more total boron than non-calcareous ones. Chemical fractionation shows that readily soluble boron represents less than 1.7% of the total, while the residual fraction exceeds 97.5%. Granulometric fractionation reveals that the majority of available boron is associated with the silty fraction (51%), followed by the sandy (34%) and clayey (15%) fractions. In terms of humic substances, humic acids account for 70.69% of total boron, compared with 27.88% for fulvic acids and 1.43% for humin. Adsorption and desorption follow the Freundlich isotherm, with high boron retention during the desorption process. In hydroponics, the optimum boron dose for lettuce (Lactuca sativa L.) is 0.5-5 mg/kg to avoid toxicity. However, for soil-grown lettuce, this concentration may exceed 5 mg/kg.

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