Pengaruh Trass dan SP36 pada Produksi Padi Sawah serta Perubahan Sifat Kimia Latosol Gunung Sindur yang Disawahkan

Abstract

The increase of food requirements was followed by the use of weathered soil for agricultural land. Latosol is one of wheatered and poor acid soils, including silicon and phosphorus, which is likely to be used as paddy fields. Paddy as Si accumulator plants require huge silicon, whereas phosphorus plays an important role in energy transfer of plant metabolic processes. This study aims to determine the effect of Trass and SP36 on yield, nutrient uptake of paddy, also chemical changes on paddy soil of Latosol Gunung Sindur. Completely randomized design was used in greenhouse experiment. Trass as a source of Si was applied in four dosages, ie without Trass, 105 g/pot, 210 g/pot, and 315 g/pot. SP36 as a source of P was applied in three dosages, ie without SP36, 4.5 g/pot and 9 g/pot. First, Trass and SP36 at appropriate dosage was applied in trial pot and being incubated for a month. At the end of the incubation period every pot was planted with four rice seedlings. Harvesting was done when the plant age about 13 weeks, after that experimented plant tissue and soil was been analysed. The trials showed SP36 significantly increased plant height, number of tillers, straw weight, uptake of Si, K, P, and N of paddy. Trass significantly increased plant height, soil pH, and soil available P. Trass and SP36 together significantly increased available of Si and Si content in plant tissue. The increase of available P and Si in soil increased the uptake of P and Si of paddy, thus improved the growth.