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Boron requirements for Eucalyptus globulus seedlings
Journal article   Peer reviewed

Boron requirements for Eucalyptus globulus seedlings

A.T. Sakya, B. Dell and L. Huang
Plant and Soil, Vol.246(1), pp.87-95
2002
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Abstract

Although boron (B) deficiency limits the productivity of eucalypts in plantations in many parts of the world, the concentrations of foliar B used in the diagnosis of B deficiency vary greatly among studies. There has been a lack of reliable diagnosis standards for B deficiency in Eucalyptus species. Therefore, the present study investigated the relationship between internal and external B concentrations and growth of Eucalyptus globulus, the main commercial temperate eucalypt species. Seedlings were grown in a B-buffered solution culture (Amberlite IRA 743) from 0.03 to 8.35 μM B. Boron deficiency symptoms appeared at day 5 in the nutrient solution containing less than 0.27 μM B. The external critical B concentrations, estimated for the growth of shoots and roots, were 1.08 and 0.99 μM B, respectively. The internal critical B concentration range in the youngest fully expanded leaf (YFEL) for shoot growth was 12-16 mg B kg-1 dry weight. The internal critical B concentrations estimated in the present study have been successfully used in the diagnosis of B deficiency in E. globulus trees up to three years of age in south-east Asia.

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
3 Agriculture, Environment & Ecology
3.4 Crop Science
3.4.1474 Micronutrient Interactions
Web Of Science research areas
Agronomy
Plant Sciences
Soil Science
ESI research areas
Agricultural Sciences
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