Utilization of some selected wastes as fertilizers for upland crop planted in Kamphaeng Saen soil
1990
Supamard Panichsakpatana | Kulvadee Kantavivorn | Suthep Thongpae (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Soil Science)
Five kinds of organic waste material (OWM) namely filter cake (FC) from sugar refinery factory, activated sludge cake (AS) from beer brewery factory, castor meal (CM) from castor oil factory, humus (HM) from monosodium glutamate factory and pig manure (PM) were tested as fertilizer for rice planted under upland condition in Kamphaeng Saen. The efficient use of the OWMs as nitrogen fertilizer was tested in a pot experiment with low and high rates (200 and 400 ppm N) of the OWMs application. The control with no-N and the standard with 400 ppm N were also included in the treatments. Three sucessive crops of upland rice (RD 23 variety) were planted with which the same treatment was continuously applied to the same pot in every crop. The results can be concluded that the efficiency of the OWMs as nitrogen ferilizer could be ranked in decreasing order as: CM = PM, IF AS= HM, FCcontrol. More growth and yield and nitrogen content of upland rice could be observed from the OWMs application. Nitrogen content in the rices straw at harvesting time of the OWMs treated pots was higher than that of the chemical fertilizer treated one whereas there was no difference of nitrogen content in grain between these two groups. Soil fertility was found to be increased with long-termed application of the OWMs. General speaking, plant nutrient contents, both macro-and micro-elements, in the soil treated with the OWMs were found to be higher in the OWMs treated soils than that in non-treated one.
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