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- Title
RELACIÓN ENTRE LAS PROPIEDADES FÍSICAS DE MEZCLAS DE LOMBRICOMPOST CON TEZONTLE, PIEDRA PÓMEZ Y CASCARILLA DE ARROZ.
- Authors
Cruz-Crespo, Elia; Can-Chulim, Álvaro; Pineda-Pineda, Joel; Moreno-Velázquez, Delia; Aguilar-Benítez, Gisela; García-Paredes, Juan D.
- Abstract
There is little information about the choice of proportions used in the mixture of lombricompost with other substrates, and even less about the physical properties and relationship between them. The objective of this study was to estimate the total pore space (EPT), aeration capacity (CA), water holding capacity (CRA), apparent density (Da), and fractions of water obtained from the water release curve of lombricompost (L), rice husk (Oriza sativa) (C), pumice volcanic rock (P), tuff volcanic rock (T), and L/C, L/P, and L/T mixtures in 80:20, 65:35, and 20:80 v/v proportions; additionally, they were compared and their relationship was analyzed. The hypothesis was that a lower apparent density of a substrate increases the values of the physical properties and different fractions of water-such as easily available water (AFD), reserve water (AR), and hardly available water (ADD). The experimental design was completely random with six replicates, and the data were analyzed using ANOVA and the Tukey test (p⩽0.05) in order to compare the means. The proportion of rice husk, pumice, or tuff mixed with lombricompost resulted in a substrate with a higher Da and CA. Greater quantities of AFD were quantified in the pumice, lombricompost, L/C 65:35, and L/C 20:80. Da had a negative correlation with EPT, CRA, AR, and ADD. The L/T mixture showed less EPT and CRA, and more CA and Da, although the Da of its substrates was similar. In the case of the L/P or L/C mixture -whose substrate Da was different- the result was completely the opposite. Both Da and the EPT were connected with the CA, CRA, AR, and ADD. The substrates with the most balanced physical properties were the L/C 20:80 and L/T 80:20 mixtures.
- Publication
Agrociencia, 2019, Vol 53, Issue 1, p1
- ISSN
1405-3195
- Publication type
Article