Design and Performance Evaluation of a Mechanical Screw-Press Manure Processor for Small-Scale Farming

Engr. Patrick Joseph L. Putiyon, Alan Pablo B. Aspiras, Cris F Barquilla III, Angeline Kate C. Batilo, Angjelhynne Jane P. Garma, Jessie Louis M. Geronimo, Pablo V. Ibay, John Vincent M. Racho, Ldrei Raphael J. Servito

Citation: Engr. Patrick Joseph L. Putiyon, Alan Pablo B. Aspiras, Cris F Barquilla III, Angeline Kate C. Batilo, Angjelhynne Jane P. Garma, Jessie Louis M. Geronimo, Pablo V. Ibay, John Vincent M. Racho, Ldrei Raphael J. Servito, "Design and Performance Evaluation of a Mechanical Screw-Press Manure Processor for Small-Scale Farming", Universal Library of Advances in Agriculture, Volume 02, Issue 01.

Copyright: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Livestock manure remains an underutilized agricultural resource in small-scale farming, often contributing to environmental pollution due to improper disposal and inefficient composting practices. This study presents the design and performance evaluation of a locally fabricated mechanical screw-press manure processor intended to improve manure management efficiency while producing nutrient-rich organic fertilizer. The system integrates mechanical compression, solid–liquid separation, and controlled aeration to reduce moisture content, enhance nutrient retention, and minimize processing time. Performance evaluation was conducted by analyzing operational parameters such as processing capacity, operating speed, and cycle time, as well as fertilizer quality indicators including nitrogen, phosphorus, and potassium (NPK) content. Agronomic effectiveness was assessed through plant growth trials using Brassica rapa (pechay). Results indicate that the developed manure processor significantly improved processing efficiency and produced organic fertilizer comparable to conventional composting methods in terms of nutrient content, with favorable effects on plant growth and soil fertility. The findings demonstrate that the proposed system offers a practical, energy-efficient, and locally adaptable solution for sustainable manure management in small-scale agricultural settings.


Keywords: Screw-Press Manure Processor, Organic Fertilizer, Small-Scale Farming, Sustainable Agriculture, Manure Management.

Download doi https://doi.org/10.70315/uloap.ulaag.2026.0201003