Microgreens are forms of production and consumption of plant foods in their early growth phase that add maximum efficiency to the production process. The use of this crop has been used in large urban centers, in places with low luminosity, being the main problem was the choice of an adequate source of lighting for the production of microgreen in vertical urban farms. The objective of this work was to evaluate the use of different sources of artificial lighting with LED in the indoor production of arugula (Euruca sativa) microgreen. Six treatments were evaluated, namely: 1. Three 50w cold white Led boards (3BF), 2. Three 50w warm white Led boards (3BQ), 3. Three 50w full spectrum Led boards (3FS), 4 Two 50w full spectrum Led boards, and one 50w cold white Led board (2FS + 1BF), 5. One 50w full spectrum Led boards, one 50w cold white Led board and one 50w warm white Led board (FS + BF + BQ), 6. For ambient lighting (Control), the parameters analyzed were Fresh weight of shoot (FWS in g) and Dry weight of shoot (DWS in g). The use of different artificial lighting sources with LEDs increased the mass production of indoor cultivation of arugula microgreens, which demonstrates greater efficiency for plant growth, with the sources (3BQ), (3BF), and (1FS + 1BF + 1BQ), showing the best result in the development of arugula microgreens, thus generating greater aerial part mass in plants.

The aim of this study was to carry out a superficial characterization on part of the watershed of Muricizal river, in Tocantins, from estimates based on given climatic and morphometric parameters. The river basin studied here comprises an area from the monitoring station of River Muricizal, at Muricilândia pluviometric station in Tocantins state code ANA 28150000 (- 7°08’43’’ and – 48°36’37’’, altitude 193m). The pluviometric stations were: code 748002, municipality of Nova Olinda - TO, 748003 municipality of Muricilândia – TO, and code 749000 municipality of Arapoema - TO. The basin under study covers the municipalities of Muricilândia - TO (11.0%), Santa Fe do Araguaia - TO (6.0%), Araguaína - TO (70.3%) and Nova Olinda - TO (12.7%). The watershed is divided into two sub - basins, comprising the total sub - basin area of River Rio Preto (69,978.73 hectares) and part of the sub basin of Muricizal river (86.847.32 hectares), comprising a total drainage area of 1,568.26 km2. The analysis of the physiographic data is necessary, since it allows morphometric understanding about the area, such as land cover, land use, rainfall data, which is important to minimize impacts that can be caused.

O potencial produtivo do feijão-caupi é determinado pelos fatores edafoclimáticos, principalmente por fatores de solo e adubação. É considerado uma planta exigente em nutrientes, em função do pequeno e pouco profundo sistema radicular e do ciclo curto. A análise geoestatística da variabilidade do solo pode indicar alternativas de manejo. Com isso esse trabalho teve por objetivo analisar características morfofisiológicas da cultura do feijoeiro através de semivariogramas, a fim de qualificar as melhores regiões produtivas do talhão. Foram realizadas as seguintes avaliações: a altura da planta, diâmetro do caule, clorofila A, B e total. A dependência espacial foi analisada por meio de ajustes de semivariogramas. Os valores das clorofilas A, B e total apresentam-se autocorrelacionados no espaço. O diâmetro de caule apresenta um moderado grau de dependência espacial que correspondeu a 31 %, para os dados analisados. A altura de planta apresenta uma fraca grau de dependência espacial que equivale apenas 9%. e efeito pepita ocorreu para os dados analisados

The expansion of agriculture has been taking place in marginal soils with low productive potential, such as Plinthosols. The liming can increase the economic and environmental sustainability of agriculture. However, there are no studies on the dissolution or recommendation of limestone for Plinthosols. The objective was to evaluate the effect of limestone doses on the chemical attributes of three soils with different gravel contents (ironstone concretions). The soils were collected (0-20 cm layer) in native areas of the central region of the Brazilian Savanna. They were classified as Red-Yellow Latosol (RYO) and two Concretionary Pétric Plinthosol (with 29% [CPP-29] and 72.8% [CPP-72] of soil volume with gravel). A factorial scheme (3x6) with the three soils (RYO, CPP-29, and CPP-72), six limestone doses, and four replications. The evolution of pH was verified at 10, 20, 30, and 40 days after the beginning of incubation (DAI), and determined the chemical attributes (Al, H+Al, Ca, Mg, BS, V%, P, and K) at 40 DAI. The doses to reach pH 6 were 1.4 t ha-1 for RYO, 3.9 t ha-1 for CPP-29, and 2.7 t ha-1 for CPP-72. Al3+ neutralization was 100% with doses above 3.5, 2.5 and 0.5 t ha-1 for CPP-29, CPP-72, RYO. There was a significant increase in Ca and Mg contents in all soils. However, the Soil CPP-72 did not reach a critical level for Ca (>2.41 cmolc dm-3) and Mg (>0.91 cmolc dm-3) for Plinthosols with higher plinthite content. Thus, we recommend using agricultural practices that increase the capacity of the soil to retain and recycle nutrients.

O monitoramento dos recursos naturais tem sido discutido em projetos de integração e análise de dados de natureza diversa, sendo identificados diferentes usos e ocupações do solo. Neste sentido as técnicas de geoprocessamento têm ganhado destaque como ferramenta de análise do uso e ocupação do solo, potencializando o planejamento das atividades a serem desenvolvidas em bacias hidrográficas, considerando a aptidão dos recursos disponíveis e as adequações por meio de gerenciamento agroambiental. O objetivo deste trabalho foi avaliar as características da rede de drenagem do alto curso do Rio Lontra, município de Araguaína (TO), mostrando os seus diferentes usos e ocupações do solo. Para o desenvolvimento dos mapas, foram utilizadas cartas imagens de satélite Landsat 8, sensor OLI, composição RGB das bandas 764, bem como ferramentas de geoprocessamento, manuseadas em plataformas do SIG e datum SIRGAS2000. Assim, foi constatado que a área de estudo possui uma rede de drenagem característica de cursos perenes, com perfil longitudinal e classificada como de 3ª ordem. Além disso, as APP’s dos corpos hídricos, até 2015, sofreram uma supressão de vegetação 8,7 ha e a atividade de uso do solo mais predominante na área é a silvicultura de eucalipto.