International Journal of Agriculture and Agricultural Sciences (IJAAS), ISSN: 1712-3496, Vol. 6(1), pp. 164-175, March, 2021. © Advanced Scholars Journals
Full length Research paper
Soil-root interface (RLD), porosity and density of earthworms in crop profile, under young agroforestry fallow-grassland (Green Mat), in Kisangani (DR Congo)
Pyame MLD1 *, Utshudi DJB2, Haesaert G3 and Baert G3
*1Faculté de Gestion de Ressources Renouvelables, Université de Kisangani, BP 2012, Kisangani, RD Congo.
2Instut Supérieur d’Etudes Agronomiques de Yatolema, RD Congo ;
3University of Gand, Belgium.
Accepted 9th Febuary , 2021
An experiment was carried out in Kisangani (DR Congo) to examine, faced to the Slash-and-burn system, to what extent and what degree the cropping system in "Plates under Green Mat" would favorably affect the soil-root interface (RLD), porosity and soil macro-invertebrates including earthworms. A device plan with 5 completely randomized blocks, divided into 2 plots each, was chosen to test the factor "production system (single-factor ANOVA x Duncan's test)". It emerges from this study the following performance points:
ü An improvement in root density and soil-root interface (13.4 versus 5.2 g/100 cm3 of soil and 22.2 versus 8.9 cm/cm3 at 0-5cm), the effects ranging up to a depth of 20cm ;
ü A dense and more compact rooting board, suitable for mineral recycling and for the complete redistribution of edaphic bioagents for fertility improvement, both microbial and faunal ;
ü An improvement in structure and organicmatter rate of the upper soil strench (8 against 3.5% at 0-5cm and 4.5 against 1% at 5-20cm);
ü An improvement in earthworm density of 200% (1693 against 581 /m2).
Cropping in Plates under Green Mat thus displays the essential features of Conservation Agriculture, being both ecological and sustainable.
Key words : Green Mat, Slash and Burn, rootingboards, morpho-edaphic charts, Soil-root Interface, Lombrics