Abstract
This study aims to evaluate the production of biomass of different cattle manure, and biofertilizer concentrations. The experiment was conducted between April and June 2014 in a greenhouse at the seedling production nursery of the State University of Paraiba (UEPB), Catole do Rocha, Paraiba (PB) state. The experiment was completely randomized in a 5 x 2 factorial design corresponding to five levels of cattle manure (0, 20, 40, 60 and 80% of the substrate volume) in the absence, and the presence of a biofertilizer. The propagation material was giant yellow passion fruits with 95 to 100% of purity purchased in the local market. After 60 days, the following variables were evaluated: root dry matter (RDM), plant dry matter (PDM), root biomass (RB), shoot biomass (SB), plant biomass (PB), biomass percentage (BP), effective leaf area (ELA) and leaf area ratio (LAR). The interaction between cattle manure and fertilizer concentrations was significant for root dry matter, mass of total plant dry matter, root biomass, shoot biomass and total plant biomass. In turn, cattle manure affected significantly biomass percentage, effective leaf area and leaf area ratio. Cattle manure and biofertilizer make the production of yellow passion fruit seedlings feasible. Key words: Passiflora edulis Sims f. flavicarpa Degener., alternative sources, propagation, protected environment.
Highlights
The genus Passiflora contains the highest number of species in the Passifloraceae family, with approximately 400 species. 20 of them are restricted to Australia, China, India, Oceania Islands and neighboring regions, and Southeast Asia
This study aims to evaluate the production of biomass of different cattle manure, and biofertilizer concentrations
Mesquita et al (2012) reported divergent results when compared with the results of this research, which reported for castor bean plants a higher mass of root dry matter (RDM) at a concentration of 80% of cattle manure in a 2 dm3 container
Summary
The genus Passiflora contains the highest number of species in the Passifloraceae family, with approximately 400 species. 20 of them are restricted to Australia, China, India, Oceania Islands and neighboring regions, and Southeast Asia. The genus Passiflora contains the highest number of species in the Passifloraceae family, with approximately 400 species. In order to obtain a satisfactory production of yellow passion fruits, good quality seedlings are needed. They must be vigorous, present good physiological characteristics and a well-developed root system, and have an adequate size. According to Costa et al (2011), the use of appropriate techniques in seedling production is very important to promote healthy and vigorous plants for the formation of orchards, such as an improved production microclimate, volume of containers, substrates, irrigation and nutrition
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