Substratos no desenvolvimento de gramado esportivo “Tifton 419"

Abstract

Bermuda grass are the most widely used today in high performance sports fields, the cultivar “Tifton 419” is widely indicated for installation in these areas, however, there is no official a recommendation in the literature of the best substrate for the implantation of this species, and research is needed to meet this demand. In this way, the objective of this study was to evaluate the influence of substrates in the development of the “Tifton 419” sporting lawn. The experiment was conducted in field with grass carpets implanted in black plastic containers (volume 8.46 L), in a completely randomized design with five substrates and 12 replicates, with treatments: soil (100%), medium sand (100%), soil (50%) + medium sand (50%), soil (33%) + medium sand (33%) + organic compost (33%) and medium sand (50%) + organic compost (50%). Macro and microporosity, total porosity, density, chlorophyll content (a + b) and fresh and dry leaf mass were evaluated. The results showed that there was influence of the substrate on the development of the turfgrass, with the medium sand (50%) + organic compost (50%) presenting greater increases of fresh and dry mass (1.09 and 0.44 kg m-2), which may lead to higher maintenance costs of the cut, and soil (33%) + medium sand (33%) + organic compost (33%) presented good results of the analyzes performed, being the one recommended for the development of the cultivar “Tifton 419” in sports fields.

Floriferous herbaceous and substrates for use on extensive green roofs

“…According to Santos and Castilho (2018) in general, the higher the total porosity of a substrate, the lower its density, and fact was observed in the present study (Table 1), however there was no difference between the results. The average height of extensive green roofs ranges from 6 to 20 cm for cultivation of herbaceous plants (DESGIN, 2014), and Kämpf (2005) recommends using substrates with a density of 0.25 to 0.40 g cm -3 for containers of up to 15 cm in height.…”

“…According to Kämpf and Fermino (2000) the ideal substrate is the one that offers greater porosity, because in addition to making better water filtration, it facilitates root growth, since it becomes the medium in which the roots develop, where for use in green roofs, should be a light and easily obtainable material (NOYA et al, 2017). Therefore, it is necessary to use mixtures of components, which must present physical and chemical properties necessary for the proper establishment and development of the species (SANTOS and CASTILHO, 2018).…”

Aesthetic and sensory quality of Emerald grass (Zoysia japonica) as a function of substrate cultivation and mineral fertilization

“…Still, this higher concentration of RCI is essential for the physiological processes of the plant, since chlorophyll is responsible for producing energy for the turfgrass (Taiz et al, 2017), as well as providing intense green coloring (Santos et al, 2019 ), as reported by Santos and Castilho (2018b) in bermuda grass, and Gazola et al (2016) in Emerald grass. And the DCGI results corroborate with the aforementioned, where the fertilizations performed (A1 and A2) managed to increase the color of the Emerald grass, when mainly grown in S5, thus having interaction between the factors The fertilization A2 in the substrate S5, was the only treatment to present a result within the recommended by Godoy et al (2012) for the species (0.50), thus inferring that the turfgrass is greener and aesthetically more acceptable.…”

Regrowth and ornamental traits of bermudagrass fertilized with sewage sludge

“…Also, the correlation between NO 3 and the DGCI is associated with an increase in chlorophyll content, reflecting the intense green in lawns, and higher NO 3 concentration more intense is grass color (Oliveira et al, 2018;Santos et al, 2019). Chlorophylls are magnesian porphyrins composed of a central Mg atom, linked to another four of N (Santos and Castilho, 2018;Taiz and Zeiger, 2017). The correlation between nitrogen and green color index was also evidenced in emerald grass in work by Santos and Castilho (2015) and in bermudagrass 'Tifway 419' (Santos et al, 2019).…”

“…The N is the main nutrient involved in the quality, growth and aesthetics of lawns (Lusk et al, 2018). Nitrogen is an important component of molecules involved in chlorophyll synthesis (Santos and Castilho, 2018;Wu et al, 2019), granting an intense green color in lawns, greater density (closed and flawless lawns), reducing the recovery time to mechanical injuries, mainly caused by trampling (Gazola et al, 2016;Santos et al, 2019). Thus, the use of sewage sludge as a source of N, can be a promising alternative to substitute mineral fertilizer (Mota et al, 2019) and to mitigate the impact of sewage sludge production.…”