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| Author(s): |
Fernando de Souza Buzo
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Ilha Solteira. 2021-05-12. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Ilha Solteira |
| Defense date: | 2021-03-31 |
| Advisor: | Orivaldo Arf; Everlon Cid Rigobelo; Amaia Miren Nogales Garcia |
| Abstract | |
Plants need phosphorus to grow and achieve high yields, but the low availability of this nutrient in soils and the low efficiency of phosphate fertilization requires that high doses of P2O5 be applied. Arbuscular mycorrhizal fungi (AMF), in symbiosis with vegetables, promote greater crop growth, greater absorption of water and nutrients, especially phosphorus. Thus, the objective of the work was to evaluate the benefits of using an inoculant based on Rhizophagus intraradices for the development of plants and to increase the efficiency of phosphate fertilization in the corn crop. The work was conducted in pots to verify how inoculation with AMF and phosphate fertilization influence the initial development of corn plants and the accumulation of nutrients in the aerial part and in the field to analyze the effects of these two factors on the development of plants, components of production, productivity and nutritional characteristics of second crop corn irrigated by sprinkler. The treatments consisted of combining 5 doses of P2O5 at sowing (0; 25; 50; 75 and 100% of the recommended) with 4 doses of inoculant containing R. intraradices (0; 60; 120 and 180 g ha-1). The pot experiment was conducted at the Engineering Faculty of Ilha Solteira, in a randomized block design and 5 x 4 factorial scheme. The field experiment was conducted in an area of UNESP's Experimental Farm, located in Selvíria / MS in the 2019 harvests. and 2020, in a randomized block design and subdivided plots, with P2O5 doses in plots and inoculant doses in subplots. Among the main conclusions, it is noteworthy that the inoculation of R. intraradices benefited the development of corn plants and the accumulation of some nutrients in the aerial part, with the potential to provide better use of phosphate fertilization and increase crop productivity. However, in optimal environmental conditions and in agricultural systems that benefit the native AMF community, mycorrhizal inoculation results in less expressive benefits. In addition, phosphate fertilization is essential for the development, nutrition and productivity of corn, but the immediate effects may not be seen in soils with good fertility. (AU) | |
| FAPESP's process: | 19/04120-7 - Mycorrhizae in maize: growth promotion and greater efficiency of phosphate fertilizer |
| Grantee: | Fernando de Souza Buzo |
| Support Opportunities: | Scholarships in Brazil - Master |