Biostimulation des sols cultives par apport de bois rameal fragmente (BRF) et de fumier.

Abstract

A biostimulation study of cultivated soils was conducted for 4 years (2014 to 2017) to determine the agricultural value of green waste Rameal Fragmented Wood (BRF), Manure and land application of anecic earthworms (Octodrilus complanatus). The results show that, the soil chosen belongs to the sandy loam class, the soil temperature varies from one environment to another, from one season to another and from one year to the next. Soil moisture changes from one environment to another, and varies from season to season and from year to year. The pH varies according to the medium, between seasons and years, at the beginning of the experiment, the pH is on average alkaline [7.63 ± 0.06], then at the end of the experiment it becomes on average little alkaline [7, 43 ± 0.03]. The electrical conductivity (μS / cm) changes from one medium to another, from one year to the next. However, the intake of BRF and manure did not affect the EC class (μS / cm) of the soil; it remained in Class I (unsalted). The soil studied is rich in limestone, the BRF intake of Nectarine and cattle manure did not affect the% CaCO3 and the soil analyzed remained in the highly calcareous class. It should be noted that the porosity (%) of the soil studied goes from the very poor class (34.0%) to the middle class (43.1%) at the end of the study. The average soil% C at the end of the process (1.96% C) is slightly higher compared to the beginning of the experiment (1.84% C). There was an enrichment of organic carbon and M.O. after addition of BRF of nectarine and cattle manure. For, the% Nt at the end of the experiment increased significantly by 12% compared to the beginning of the test. For the biotic compartment, we noted an increase in the density of microscopic fungi, microarthropods (collembolans and mites) in the amended plots compared to the control. In addition, the index of soil biological quality (QBS) is multiplied by 2 compared to the control in the different plots studied. In addition, the addition of BRF Nectarine and cattle manure, promotes the growth and development of O. complanatus. Also, the BRF of nectarine (Prunus persica var nucipersica) and cattle manure significantly boosts the productivity (g / m²) of durum wheat (Tritucum durum) of the Hedba 3 variety. (g / m²) increased by 282% and 275%, respectively, compared with the control. However, the presence of earthworms with BRF and manure (BRFFV) favors more the production of fresh aerial biomass (pFa (g / m²), This study on the contribution of Fragmented Ramial Wood (BRF) is very interesting futuristic for the in fact, it has shown that the BRF is an energy input for the species Octodrilus complanatus.