Solid bio-compost as a nutrient source for family farming

This study aimed to demonstrate the importance of goat manure, sawdust, and green waste (lettuce, potatoes, carrots, and cabbage) as nutrient sources for soil and crops in family farming. Macro and micronutrient concentrations were determined. Two bio-composts were formed, one with a mixture of goat manure, sawdust and agricultural waste and the other without manure only sawdust and agricultural waste. The physicochemical properties of the soil, residues, and bio-compost were measured. Sawdust had high total organic carbon (TOC) and low total nitrogen (TN), P, K, Ca, and Mg levels, whereas goat manure had high TOC, TN, K, Ca, Mg, and P levels. The soil treated with the solid bio-composts (with and without goat manure) had significant effects, with the pH value reaching 7.0, suggesting that the bio-composts were safe for agricultural use. The manure biocompost was rich in TOC, TN, P, Ca, and K macronutrients but poor in Mg. The manure-free bio-compost had high TOC and TN levels. However, both bio-composts had low C:N ratios. Finally, the experiments revealed high Fe and Mn and low Cu and Zn concentrations. These results clearly revealed that growth of maximum plant height (71 cm) were significantly influenced by bio-compost and suggest that the levels of TOC, TN, P, K, Ca, Mg, Fe, Mn, Cu, and Zn were reliable and thus do not present restrictions for agricultural use.