Preparation of compost using layer droppings with different materials

Abstract

The experiment was carried out by anaerobic composting with layer droppings (T₁), layer droppings with straw (T₂), layer droppings with fodder residues (T₃) and layer droppings with saw dust (T₄) under soil surface to study the suitable method with layer droppings and their nutrient composition. The sample from composted materials was collected at 0, 10, 20 and 30 d for proximate analysis. In 30 d of composting dry matter and organic matter were gradually decreased in every method and which were also differed among the treatments (p<0.01). Crude protein (CP) gradually increased in every method and was higher in T₃ (19.43%) and then T₁ (18.93%), T₄ (15.99%) and T₂ (14.61%) (p<0.01) at 20 d of composting. The crude fiber content gradually decreased in every method and was higher in T₂ followed by T_4, T₁ and T₃ (p<0.01) considerably with the composting period. Ash content was increased in all treatments with the advancing of composting period (p<0.01). The C/N ratio was higher in T₄ (22.4) followed by T₂ (22.2), T₁ (22.0) and T₃ (21.9) (p<0.01) considerably with the composting period. The P^H value in all treatments decreased up to first ten days then gradually increased with the increase of composting period. The p^H value was higher in T₁ (8.54) followed by T₂ (8.15), T₃ (8.10) and T₄ (8.00) (p<0.01) at 30 d of composting period. The proximate compositions of all treatments were in acceptable range up to the end of composting period. Therefore, the  results suggest that composting layer droppings with fodder residues improve the nutritional  value of compost at 20d of composting time.

DOI: http://dx.doi.org/10.3329/bjas.v41i2.14131

Bang. J. Anim. Sci. 2012. 41 (2): 120-123