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Copyright of Engenharia na Agricultura is the property of Engenharia na Agricultura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Monitoring the nutritional status of the soybean crop, based on nutrient levels in the third trefoil with petiole, can help improve fertilization. The objective of this work was to determine the reference values of macro and micronutrient contents, to evaluate the nutritional status of soybean crops, regarding the degree of balance and to obtain the potential response to fertilization for nutrients. The work was carried out based on a database of foliar nutrient contents and grain yield of soybean crops in Mato Grosso, Campo Novo dos Parecis region, covering different agricultural years, cultivars, soil textures and times of use of the area. with the soybean crop. They were obtained from useful reference values for the evaluation of the nutritional status of soybean crops, regarding the degree of balance, plus limits of nutrient content in the normal range, according to the balance by the Kenworthy method. In low-yield soybean crops in the region studied, on average, for macronutrients, 69.7% of crops are in the normal class, while for micronutrients this percentage is lower, 60.9%. N is the nutrient most found in crops (83.2%), while Cu (49.8%) is the least found in the normal class. Of the low productivity soybean crops studied in this work, 78.3% have adequate nutritional balance. Mg, P and Ca and Cu, Mn and Zn are those for which there are greater expectations of crop productivity gains, in response to fertilization. [ABSTRACT FROM AUTHOR]

Copyright of Engenharia na Agricultura is the property of Engenharia na Agricultura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engenharia na Agricultura is the property of Engenharia na Agricultura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)