Effect of Leaching and Manure on Production of Wet Field Rice
The research objective was to get the appropriate technological packet of lowland rice cultivation on tsunami-affected land to increase land productivity. The research was conducted in Bireuen District of Aceh Province. Result of salinity measurement using Electro Magnetic (EM-38) tool on tsunami-affected land showed that soil salinity has decreased (ECa = 0,5 dS/m ~ Ece = 0,52 dS/m) but it was still higher than that of unaffected land. Soil analyses showed that organic content was very low
... nt was very low (0.97 %) and potassium was also low (0.52). In contrast, there were very high contents of Mg (8.58 cmol/kg) and Ca (7.00 cmol/kg). In dry season of cropping year 2005 (April-September), farmers harvested rice as much as 30-50 % of normal productivity (2.5-4 tons/ha). Effort in increasing land productivity needs introduction of technological packet such as manure combined with potassium application. In this research, manure used was from processed chicken waste in dosage of 0 and 2 tons/hectare combined with KCl fertilizer as source of potassium in dosage of 50 tons/ha and 75 tons/ha. Basic fertilizer used were 200 kgs/ha urea and 100 kgs/ha SP36. The research applied factorial Randomized Block Design, consisted of 8 application combinations and 3 replications. The result showed that application of 2 tons/ha manure combined with 75 kgs/ha KCl, 200 kgs/ha urea and 100 kgs/ha SP36 and two times of leaching gave the highest rice yield (11,54 tons/ha). The lowest yield of 8.30 tons/ha (30 % higher than average farmer yield before tsunami) was found on farmer's application (without leaching, no manure, 200 kgs/ha urea, 100 kgs/ha Sp36 and 50 kgs/ha KCl).