Biotechnology Effect of rice husk and chicken manure on highly acidic soils on spinach (Spinacia Oleracea L.)

Abstract

An experiment was carried out in the greenhouse during the 2014 spring season. A complete randomization design was used with three replications. The study aimed to assess the possibility of increasing the growth of spinach grown in highly acidic soil by adding rice husks and chicken waste. Four levels of rice husks and four levels of chicken waste were used. The following results were obtained: Addition of RH15 (g/kg) led to a significant increase in stem diameter, dry and soft weight of spinach leaves, and dry weight of roots. However, when poultry waste was increased to 30, there was a significant increase in plant length, stem diameter, dry and wet weight of leaves, dry and wet weight of roots, while zinc concentration increased significantly when adding 40 rice husk. The interaction between rice husks and poultry waste (0 and 5) led to a significant increase in zinc concentration.