| Filter cake is by - product of cane sugar manufacture. It consists of plant nutrient which is useful for soil fertility improvement. According to low fertility of most paddy soils, an experiment had been conducted with combination of chemical fertilizer application and filter cake incorporation for soil fertility and yield improvement in two different soil types in wet season during 1992-2002. This experiment was 4x3 factorial in randomized complete block design, 3 replications, 2 factors with 4 filter cake rates at 0, 500, 1,000 and 1,500 kg/rai and 3 nitrogen rates at 0, 3 and 6 kg N/rai for photo sensitive rice cultivar (Khao Dawk Mali 105) planted in Koksamrong Soil Series (sandy loam, mixed isohyperthermic, typic tropaqualfs) at Lop Buri Rice Research... |
