‘Barazur’ or DiscoveryTM (Cynodon dactylon) is a new variety of Bermuda grass that has slow vertical growth and a bluish-green colour, and the use of sewage sludge in implantation of this species may be an alternative for its sustainable cultivation, without need for chemical fertilizers. Thus, the objective was to evaluate the influence of sewage sludge compound on colour and development of Bermuda grass DiscoveryTM. The experiment was conducted in the field with sod implanted in black plastic containers (volume 8.46 L) filled with soil + sand (1:1) and added different dosages of sludge compost, being: 0 g L -1 (control), 30 g L-1, 60 g L-1 and 120 g L-1. Digital image analysis, fresh and dry leaf mass, Nitrogen leaf and Nitrogen leaf accumulation were evaluated. It was observed that the sewage sludge influenced on turfgrass colouring and development, where 30 g L-1 showed excellent results for colouring with less mass production and N accumulation than the highest dose, showing that this treatment is sufficient for lawn development, without the need of using higher concentrations of compound. It is concluded that the use of composted sewage sludge at a dose of 30 g L-1 is recommended for use in implantation of Bermuda grass DiscoveryTM.
Bahiagrass (Paspalum notatum) is a native species widely found on highways margins, however, cutting practices are necessary, which increase the maintenance cost, being an alternative, the use of growth regulators, such as Paclobutrazol. Thus, the objective of the present study was to evaluate the use of Paclobutrazol doses as growth regulator in Bahiagrass. The turf was implanted in black plastic containers (8.46 L), previously prepared with the mixture of soil + sand + organic compost (1:1:1). The experimental design was completely randomized, composed of 3 doses of Paclobutrazol [1.1 and 2.2 kg a.i. (active ingredient) ha-1 + control (0 kg a.i. ha-1)], in four applications of 2 L of syrup per container, thus forming a factorial 3x4 (doses x response time) with 3 repetitions. The fresh and dry mass, relative chlorophyll index, leaf N and the visual aspect of the green cover rate were evaluated on four different dates. It was observed that the product controlled the growth of the lawn, with less production of fresh and dry mass, and increase of the relative index of chlorophyll and concentration of leaf nitrogen; however, it decreased turfgrass density of green mass, which influenced the visual lawn aspect. Thus, Paclobutrazol controlled Bahiagrass growth at a dose of 2.2 Kg a.i. ha-1 in regular applications of 30 to 45 days, however it affected the density and consequently the aesthetics of the turfgrass.
Mowing is a fundamental management for turfgrass development. However, this operation has a higher cost, requiring alternatives to mechanical handling, such as growth regulators use. Thus, the objective was to evaluate the use of paclobutrazol and phenoxaprope-P-ethyl as growth regulators in Carpet grass Plus®. The experiment was performed in full sun, in the northwest region of São Paulo state, from January to March 2020. The grass used was planted in black plastic containers (50 x 17 cm, with a height of 15 cm, totalling 11 L of volume), previously prepared with a mixture of soil + sand (2:1). The experimental design was completely randomized, consisting of two doses of paclobutrazol (1.0 and 2.0 mL L-1) + control and two doses of phenoxaprope-P-ethyl (6.25 and 12.5 µL L-1) + control. Leaf chlorophyll index, digital image analysis and fresh leaf mass were evaluated. It was observed that for Carpet grass Plus®, there was paclobutrazol effect when used as a growth regulator, with the recommended dose of 2 ml L-1 due to its residual effect up to 35 days in reducing fresh mass, without changing the concentration of leaf chlorophyll and green colour. Phenoxaprope-P-ethyl, on the other hand, had an effect as a growth regulator for the studied species, when used in the dose of 6.25 µL L-1.
The Brazilian berry (Pliniacauliflora, sin: Myrciariacauliflora Berg), a native tree of the Brazilian Atlantic Forest, called by native people as “Jabuticaba” and cultivated throughout the national territory, is a species produced for consumption in natura, manufacturing liqueurs, ice cream, fermented drinks and juices, jellies, in addition to be used in the pharmaceutical industry for essential oil production. Despite being a tree species, it has been cultivated in pots by those who have little space. Thus, this study aimed to verify substrate compositions with soil in the development of Brazilian berry in full sun and potted. The experimental design was completely randomized, with 3 treatments and 9 replications, being: T1 – Soil + organic compost (1:1); T2 – Soil + sand (1:1); T3 – Soil + sand + organic compost (1:1:1). Chemical and physical properties of substrate mixtures, chlorophyll index and fresh and dry matter of leaves and analysis of leaf macro and micronutrients content were evaluated. Among the evaluated treatments, soil + sand + organic compost (1:1:1) showed favourable results for the evaluated characteristics, while soil + sand (1:1) showed unfavourable results, probably due to the presence of sand in its mixture.
A Impatiens balsamina (beijo de frade, maria sem vergonha) é uma florífera ornamental, usada em vaso e para formação de canteiros; possui flores de cores vermelha, creme, laranja, rósea, branca, roxa ou mesclada, caule suculento e ereto, de altura variando entre 30 a 90 cm, sendo tipicamente tropical. A pesquisa foi realizada com o intuito de avaliar a produção I. balsamina (Blue Line Flores / Balsamina Camélia Sortida) com uso de adubo de liberação lenta e convencional, em casa de vegetação tipo PAD&FAN na UNESP /Ilha Solteira - SP. Jardineiras de polipropileno preto (47,5 cm x 17,5cm boca; 41,5cm x 113 cm fundo e 15,5 cm altura: 8,5 litros), foram preenchidas com os tratamentos: T1- Condicionador Floreira + Forth Plantio (13 – 5 – 13) (5 g L-1), T2 - Condicionador Floreira + Osmocote® 3M 14-14-14 (6 g L-1) e T3 - Condicionador Floreira + Osmocote® 3M 19-06-10 mini prill (6 g L-1), e posteriormente transplantadas 2 mudas (mudas com 30 dias). Conclui-se que os melhores resultados foram obtidos com uso de adubo de liberação lenta, com ênfase no tratamento T3 – Substato + Osmocote® 3M 19-06-10 mini prill (6 g L-1).
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