Adonis Moreira

SOYBEAN LEAF WRINKLE: DEVELOPMENT, PLANTS' NUTRITIONAL STATUS AND CHEMICAL FORMS OF MANGANESE(II) ADSORBED ON THE ROOTS

Description: Studies on the distribution of exchangeable, complexed and precipitated Mn(II) chemical forms adsorbed to the roots of soybean plants throughout the development cycle can help in the retroactive interpretation of possible periods of excess availability of the element in the soil-plant system. The objective of this study will be to evaluate the effects of Mn toxicity on the soybean genotypes DONMARIO 66i68 IPRO and BMX FÚRIA CE in nutrient solution in the Nutrient End Technique (NFT) system, with variable Mn availability throughout the plant development cycle. The change in Mn availability in solution will be performed as follows: from phenological stage V1 to V7 the amount of Mn in solution will be 2 M, from V7 to V10 (50 M), from V10 to V13 (100 M), from V13 to V16 (0 M) and from V16 to R7 (0 M). The determination of the chemical forms of exchangeable, c