Physicochemical, mineral, and enzymatic characterization of humus produced from cattle manure and Eichhornia crassipes as a potential organic soil amendment

Authors

DOI:

https://doi.org/10.25127/agrops.20261.1194

Keywords:

vermicompost, cattle manure, Eichhornia crassipes, humus, heavy metals, enzymatic activity

Abstract

This study characterized the proximate composition, mineral content, presence of Cd and Pb, organic matter, and enzymatic activity of composts and humus produced from cattle manure and water hyacinth (Eichhornia crassipes) as potential organic soil amendments. The research was conducted on a farm located in the La Pastora sector, Tosagua, Manabí, Ecuador. Three mixtures of cattle manure and water hyacinth (1:1, 2:1, and 3:1) were evaluated for the production of organic fertilizer and subsequent vermicomposting with Eisenia foetida. Additionally, mixtures of humus and embankment soil were characterized in five proportions. Protein, fat, ash, fiber, carbohydrates, organic matter, N, P, K, Ca, Mg, S, Cu, B, Fe, Zn, Mn, Cd, Pb, catalase, and urease were analyzed. Cattle manure had higher ash, fiber, and macronutrient content, while lechuguín stood out for its carbohydrate and organic matter content. The 100% humus mixture showed the most favorable profile for N, P, and K in the mixtures with embankment soil. Urease activity increased the pH from 7.00 to 9.50, and catalase activity ranged from 12 to 22 mL O₂ min⁻¹. A critical finding was that Cd in cattle manure was 0.56 mg kg⁻¹, thus requiring control measures before recommending its agricultural use. The results provide an initial basis for selecting organic materials with potential as soil amendments, although studies on stability, safety, and agronomic validation are required.

Downloads

Published

2026-05-18

Issue

Section

Manuscritos

How to Cite

Physicochemical, mineral, and enzymatic characterization of humus produced from cattle manure and Eichhornia crassipes as a potential organic soil amendment. (2026). Revista De Investigación De Agroproducción Sustentable, 8(1). https://doi.org/10.25127/agrops.20261.1194

Similar Articles

1-10 of 57

You may also start an advanced similarity search for this article.