Plant growth regulator and soil fertilizer improve production and growing stage of Brachiaria decumbens

Abstract

It is necessary to increase the rates of initial growth of pastures for use during the better planting period. Thus, two experiments were used to evaluate the effect of plant growth regulator (PGR; auxins, gibberellins and cytokinins) in seeds types (coated with polymer coating fungicide and conventional method) and nitrogen fertilization methods in Brachiaria decumbens cv. Basilisk on the germination, growth, development and physiological composition. From the regression estimates, lower levels of PGR (10.3; 12.8; 8.85 and 9.57 ml/kg for germination percentage, germination speed index, leaf and pseudostem, respectively) were recommended in coated seeds when compared to conventional method (untreated seeds, with polymer coating and fungicide). Leaf and pseudostem mass production had a significant interaction effect between seed type and the use of growth regulator. Coated seeds (with fungicide and polymers after scarification) had greater performance with absence or at lower levels (8.85 and 9.57 ml/kg seed) of growth regulators. This was not observed for conventional seeds, the higher doses (15.5 and 18.1 ml/kg) presented higher development for the same characteristics. In second experiment, rates of photoassimilate were increased by soil fertilization and use of PGRs. No influence of foliar fertilization was observed when used exclusively, but N‐fertilization multiple and soil promotes an increase in chlorophyll content and mass yield, respectively. The use of exogenous hormonal compounds acts on the organogenesis of plant tissues and increases the formation of plant tissues and acts in the promotion of germination and development of structures, making it a key tool in pasture establishment.

Incidence of the shading, bioregulators and biostimulant on the growth and yield of Mombaza grass (Panicum maximum Jacq.)

“…Bioregulators and biostimulant did not influence DM performance, which coincides with that published by Guilcapi et al (2019), who pointed out that gibberellins, cytokinins and ethylene did not influence the DM yield of A. elatius. However, the results obtained differed from the work carried out by Rocha et al (2019) in B. decumbens, in which the bioregulators notably improved DM performance when using high levels of Stimulate® (kinetin, gibberellic acid and indolebutyric acid) (16 to 24 mg kg -1 ). On the contrary, in the forage plant triticale cv.…”

“…Abril-Junio. Rocha et al (2019) en B. decumbens, en el cual los biorreguladores mejoraron notablemente el rendimiento de MS cuando utilizaron niveles altos de Stimulate® (kinetina, ácido giberélico y ácido indolbutírico) (16 a 24 mg.kg -1 ). Por el contrario, en la planta forrajera triticale cv.…”

“…Se han reportado los beneficios de dichos productos en cuanto al establecimiento del cultivo, características morfoestructurales (Rocha et al, 2019), producción y calidad del pasto (Oliveira et al, 2019;Aguilar et al, 2020) y las concentraciones de N, P y K, y de bioproductos (biofertilizantes y hongos micorrízicos arbusculares) en la biomasa aérea del forraje (Plana et al, 2016). Sin embargo, en Mombaza se requieren estudios sobre este tipo de técnicas.…”

“…The benefits of these products have been reported in terms of crop establishment, morphostructural characteristics (Rocha et al, 2019), production and quality of the pasture (Oliveira et al, 2019;Aguilar et al, 2020) and concentrations of N, P and K, and of bioproducts (biofertilizers and arbuscular mycorrhizal fungi) in the aerial biomass of the forage (Plana et al, 2016). However, Mombaza requires studies on this type of technique.…”

Vegetation Characteristics and Response to the Soil Properties of Three Medicinal Plant Communities in Altay Prefecture, China

“…Nutrient elements in the soil play vital roles in terms of improving the production and growing stage of plants [42]. The black soil had the highest vegetation coverage, the thickest humus layer, and the largest accumulation of TN, which was mainly distributed in the surface layer (0-10 cm).…”