Comparison of the quality of two organic fertilizers on yield of Hom Pathum rice and soil properties

Abstract

The testing quality of two organic fertilizer types on yield of Hom Pathum rice and soil properties after harvesting consisted of two experiments. The first experiment was to compare the quality of vermicompost (VC) and water hyacinth compost (WHC). The results showed that VC was higher organic matter, total nitrogen and total phosphorus (503, 21.6 and 5.33 g/kg) than WHC after 60 days of composting. On the other hand, WHC gave the total potassium content (14.4 g/kg) higher than VC. The second experiment was investigated the effects of two organic fertilizers on yield of Hom Pathum rice and soil properties after harvesting found that the fertilizer application 0.5SSF+0.5VC given the highest grain yield and dry straw weight (55.4 and 29.7 g/pot) which was not statistically different from the fertilizer method CFF (53.7 and 28.9 g/pot) and 0.05SSF+0.5WHC method (54.8 and 26.4 g/pot). Furthermore, soil properties after harvesting was found that the methods of two organic fertilizers gave higher organic matter (56.0-57.9 g/kg) than those without organic fertilizers (51.4-52.9 g/kg). In addition, it also results in exchangeable potassium being increased (236-256 mg/kg). Therefore, it may be concluded that the use of fertilizers for rice production in the area should reduce the amount of chemical fertilizer by using the combination of chemical fertilizer and organic fertilizer will tend to help maintain soil fertility and maintain rice yields to a satisfactory level.