Metodologia de projeto de um sistema de iluminação suplementar em conjunto com pivô de irrigação para o cultivo da soja

Abstract

This work presents a proposed methodology for designing lighting systems for horticulture, providing a historical context of plant physiology, and examining the influence of solar irradiation on cultivars in the southern region of Brazil, such as soybeans. With limited studies on the use of light-emitting diodes (LEDs) in agricultural systems, it is necessary to investigate the use of these systems and present the potential opportunities for their utilization. The necessary concepts for building the knowledge base regarding irrigation pivot agriculture systems are presented, highlighting the main types, advantages, and challenges of these systems. This review is essential for understanding the problem and sizing lighting systems suitable for horticulture. Addressing radiometric variables, LEDs are researched. With the aim of developing sustainable agricultural practices, studies and implementations of techniques that enhance the productivity of nutrient-rich crops are encouraged. The overview of soybean cultivation, with the presentation of agricultural productivity metrics, underscores a multidisciplinary study on the use of LEDs in horticulture systems. The concepts and key characteristics of these devices that justify their use in agricultural systems are also presented. The use of high-efficiency photosynthetic photon flux density LEDs, along with the development of a design methodology, enables the use of high-power LED modules as supplemental lighting for horticulture. The implementation of two experiments is carried out, with the first serving as a proof of concept, demonstrating the effects of artificial lighting on soybean crops during the vegetative stage. Finally, the second experiment is conducted using the presented design methodology during the soybean harvest in 2021, in a rural area provided by the Federal University of Santa Maria, in partnership with the Field Crops group.