Evaluation of the Development of Roselle (Hibiscus Sabdariffa L.) in Two Soil Types with Interaction of Bacterial Cells and Vermicompost

Abstract— In this study, we tested the growth of two varieties of Roselle (Hibiscus sabdariffa) cultivated in two types of soils and the effects of the inoculation of seeds with cells of bacterial strains and vermicompost. (H. sabdariffa) are a member of the Malvaceae family and an important plant because its calyxes are used to produce beverages, prepare food, in the textile industry, cosmetology, perfumery, medicine, etc.

This research was carried out at the Postgraduate College, Montecillo Campus, Mexico. The experimental design was completely randomized blocks with a factorial arrangement (4x3x2): four levels of organic matter factor, three levels of bacterial strains factor, and two levels of soil factor with three repetitions. The variables tested were: germination percentage (GP), plant height (PH), stem diameter (SD), the number of leaves (NL), foliar area (FA cm2), radical volume (RV cm3), dry aerial part biomass weight (DAPBW), dry root biomass weight (DRBW), dry calyx biomass weight (DCBW) and chlorophyll content (CC). The effects of soil and bacterial strains showed significant differences (p ≤ 0.05) on the agronomic characteristics of (H. sabdariffa) plants. The organic matter factor only presented significant differences (p ≤ 0.05) in the germination percentage and growth variables of the vegetative phase.

To increase crop production, the use of wastewater and microorganisms is proposed. Vermicompost exploded the percentage of germination, height, the number of leaves and stem diameter during the first weeks of growth, presenting important results in Creole variety (farmers’ local variety). By inoculating seeds with cells of bacterial strains, A9m and A7 helped significantly to stimulate plant growth, finding a better response in A9m strain. The effects of soil factor showed significant differences (p ≤ 0.05) in soil irrigated with residual water over agronomic characteristics satisfying the nutritional requirements of the crop.

Keywords— Germination percentage, Malvaceae, Soil microorganisms, Organic matter, Wastewater.

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Agriculture Journal: Evaluation of the Development of Roselle (Hibiscus Sabdariffa L.) in Two Soil Types with Interaction of Bacterial Cells and Vermicompost

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