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Title of Journal: Plant Soil

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Abbravation: Plant and Soil

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Springer International Publishing

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DOI

10.1007/bf02495635

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ISSN

1573-5036

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A humic substances product extracted from biochar

Authors: E R Graber L Tsechansky E MayzlishGati R Shema H Koltai
Publish Date: 2015/05/29
Volume: 395, Issue: 1-2, Pages: 21-30
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Abstract

Biochar additions may have positive impacts on phosphorus P availability to plants and cause downregulation of genes associated with P starvation Various alkalineextracted humic substances products HSP also induce partial relief in plants from P starvation and moreover cause an increase in total cell phosphate ATP and glucose6phosphate levels As many biochars contain substances similar in structure and functioning to HSP our goal was to examine if such products extracted from biochar BHSP could affect plant responses to initial P concentration Pi under Pi sufficient and starvation conditionsRoot hair length was significantly lower in BHSP amended Pisufficient growing media and root hair density was significantly lower in both BHSP amended Pi sufficient and starvation regimes as compared with nonamended treatments The differences did not result from either primary P source or secondary increased P availability nutritional effects

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