Abstract

MIRANDA BALBOA, Grover German  and  MIRANDA CASAS, Roberto. Characterization of physical chemical properties of sutrates based on turbine (Oxychloe andina). Apthapi [online]. 2021, vol.7, n.2, pp. 2164-2173. ISSN 0102-0304.

ABSTRACT:  The present research characterized the Physical Chemical properties of four substrate formulations based on the transition peat identified as Oxychloe andina Phill. The spinach vegetable (Espinaca oleracea L.) was used as an indicator of absorption, referring to the percentage of emergence in seed tray covers within a protected environment and for the phenological completion of root characteristics in larger containers, with the same base substrates inside a greenhouse. Once the raw materials were identified, the proportions of: 50:25:25 of peat, black earth and llama manure (Witness, T0) were evaluated; 50:25:25 of peat, black earth and rice husk ash (Mixture, T1); 50:25:25 of peat, land of place and black earth (Mixture, T2) and 50:25:25 of peat, land of place and vermicompost (Mixture, T3). The granulometry influenced in particular the peat to determine the influence on the characterization of the real density when compared with the evaluations in a solitary manner and in a manner of mixing the substrate formulation. Regarding the apparent density, the porosity and water retention at forty eight hours presented independent characteristics, both alone and as a mixture. The water used was of moderate restitution grade and of normal requirement. In addition, the distribution of cations and anions was acceptable. The following responses were obtained: in the mixtures T2 and T3, better absorption (CIC) was shown. Both mixtures presented better qualityof rooting. The T0 mixture showed a higher quantityof usefulseedlings dueto physical characteristics, the T2 mixture and the T3 mixture presented better quality in containers, the T1 mixture was the one that did not show good adaptability in both containers.

Keywords : Peat; absorption; seed tray cover; protected environment.