Abstract
Nutrients have differences in their functions as metabolic and structural constituents in plant organs. The specific identification of the symptoms of excess or deficiency of nutrients is essential for the correct management to be carried out in order to avoid production losses. In this context, this research aimed to evaluate the symptoms of deficiency and excess of nutrients in soybean. The experiment was carried out on a bench, with 3-liter containers, in which uniformly germinated seedlings were selected for implantation. Initially, the seedlings were subjected to a complete nutrient solution to allow for a uniform and unrestricted initial development over a period of one week. Then, the plants were subjected to solutions with twice as much nutrient, absence of nutrients, complete solution and nutrient restriction, individual omissions resulted in morphological changes, which translated into visual symptoms characteristic of the nutritional deficiency of the respective nutrient. The solution with twice the nutrient concentration of the complete solution showed an increase in the absorption of N, Mg, K and Fe, for Cu it was twice the absorption and for Zn five times more. There was a decrease in the absorption of Ca and Mn and, with that, it is concluded that the availability of twice as many nutrients did not result in double their absorption.
Highlights
After the introduction of soybean in Brazil, it was restricted to Rio Grande doSul until the 1960s, as it exhibited marginal importance in the context of agribusiness (Dall'agnol, Roessing, Lazzarotto, Hirakuri, & Oliveira, 2007)
The plants were subjected to solutions with twice as much nutrient, absence of nutrients, complete solution and nutrient restriction, individual omissions resulted in morphological changes, which translated into visual symptoms characteristic of the nutritional deficiency of the respective nutrient
There was a decrease in the absorption of Ca and Mn and, with that, it is concluded that the availability of twice as many nutrients did not result in double their absorption
Summary
After the introduction of soybean in Brazil, it was restricted to Rio Grande doSul until the 1960s, as it exhibited marginal importance in the context of agribusiness (Dall'agnol, Roessing, Lazzarotto, Hirakuri, & Oliveira, 2007). According to Dall'agnol et al (2007), the crop received this appreciation due to its wide use, in human and animal food and according to Loro et al (2021), because this culture is a source of proteins and a diversity of macro and micronutrients. It triggered an increase in production areas, in which, according to Companhia Nacional de Abastecimento (CONAB) (2020), the world planted area in the 2019/20 season was 122 million hectares and a production of 337 million tons of grain. Rio Grande do Sul had a production of 11 million tons of grain in an area of 5 million hectares (CONAB, 2020)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
