Necessidades hídricas das gramas batatais (Paspalum notatum Flüggé) e esmeralda (Zoysia Japônica Steud) estimadas por sensoriamento remoto

Abstract

Grass production has gained importance over the years, noted for its large-scale use in the composition of green areas, gardens and sports fields. However, in the cerrado region, the use of irrigation during the dry season (April to September) is essential to ensure vigorous lawns throughout the year. However, with the restriction of water use, especially in cities, lawn care practices must change and a way to optimize water use for lawn irrigation is to identify which is the best species of grass in terms of water requirement (ETc). Thus, the objective of this study was to estimate the water requirement of the batatal and emerald grasses for the region of Trindade -GO (Santa Maria District), Brazil, using remote sensing (Images Sentinel 2 and Algorithm SAFER) from 10/01/2018 to 07/31/2019. The batal and emerald grasses showed Kc of 1.05 and 1.0, for the estimate made through the remote sensing method, respectively. Therefore, it was observed that, on average, the emerald grass presented 4.76% less water demand compared to batatal grass.