METAL CHELATOR EFFECT OF GLYPHOSATE APPLICATION IN SOIL ON MICRONUTRIENTS AVAILABILITY

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Gina Scaeteanu
Roxana Maria MADJAR
Catalina Calin
Elena-Emilia SÎRBU
Nicoleta GRIGORIU

Abstract

This paper presents the effects of glyphosate treatments on vineyard soil from Tohani Dealu-Mare on soil reaction and concentration of mobile forms of metals (copper, iron and manganese) on two depths: 0-30 cm (D1) and 30-60 cm (D2). Treatments applied in five different concentrations, as it follows: 5.04 mmol∙L-1 (S1), 15.12 mmol∙L-1 (S2),
30.24 mmol∙L-1 (S3), 45.36 mmol∙L-1 (S4), 60.48 mmol∙L-1 (S5) provided in soil glyphosate levels of 0.021 mmol∙kg-1 (C1), 0.063 mmol∙kg-1 (C2), 0.126 mmol∙kg-1 (C3), 0.189 mmol∙kg-1 (C4), 0.252 mmol∙kg-1 (C5). Soil analyses were performed at three different moments: before application (T0), 7 days (T1) and 14 days (T2) after glyphosate treatments. The obtained results evidenced decrease of pH values due to glyphosate acidifying effect. It was found significant correlation between pH and glyphosate concentrations at T1, T2 moments and D1 depth, also at T2 at D2 depth. In addition, it was evidenced that glyphosate concentrations influence metals mobility. For instance, the mobile manganese concentrations found at two depths present a significant correlation at T1 and D1 (r =0.8340*) and at T2 and D2 (r = 0.8333*) with glyphosate treatments. Also, chelation effect of glyphosate on microelements is related with applied concentration.

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How to Cite
Scaeteanu, G., MADJAR, R. M., Calin, C., SÎRBU, E.-E., & GRIGORIU, N. (2024). METAL CHELATOR EFFECT OF GLYPHOSATE APPLICATION IN SOIL ON MICRONUTRIENTS AVAILABILITY. AgroLife Scientific Journal, 13(1), 132–138. https://doi.org/10.17930/AGL2024114
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