Pengujian Rekomendasi Pemupukan Spesifik Lokasi dan Sistem Tanam terhadap Hasil Padi Sawah di Desa Temega, Kecamatan Abang, Karangasem

Abstract

Evaluation of Specific Location Fertilizer Recommendations and Plant System on Rice Yield Temega Village, Abang District, Karangasem. This study aims to determine the response of specific location fertilizer recommendations and planting system on rice yields in Temega Village, Abang District, Karangasem Regency. The method was used Factorial Randomized Block Design (RBD). The treatment tried consisted of two factors. The first factor was fertilization recommendations (R): R1 = location specific recommendation (250 kg Urea/ha, 100 SP36/ha and 50 kg KCl/ha); R2 = Location specific recommendation + Compost (230 kg Urea/ha, 100 SP36/ha, 50 kg KCl/ha + 5 t compost/ha), R3 = Farmer method (300 kg Urea/ha, 125 SP36/ha and 75 kg KCl/ha). The second factor was planting system (TL) : T = Tegel (20 cm x 20 cm) and L = Jajar Legowo 2 : 1. Combination of treatments into 6 treatments and each treatment was replicated 4 times so that there were 24 plots of research. The results showed that location specific fertilizer recommendations resulted in oven dry grain weight m-2 of 0.84 kg compare to that of farmers (0.85 kg). The application of location specific fertilizer recommendations can save as much as 50 kg Urea/ha, 25 kg SP36/ha and 25 kg KCl/ha. Jajar Legowo planting system can produce grain contain m-2 of 1.14 kg or an increase of 78.13% compared to tegel planting system (0.64 kg).

Land suitability evaluation for elephant grass plant (Pannisetum purpureum) in Suka Maju Village, Malind District, Merauke Regency

“…Land S3-nr2, na3 Cs = Class, SiCL = silty clay loam, CEC = cation exchange capability, S1 = highly suitable, S2 = moderately suitable, S3 = marginally suitable, nr2 = Base saturation, na3 = K2O Base saturation in field and grassland soils is classified as very low. Base saturation and pH are interconnected, where if the pH is low then the base saturation will be low and vice versa [12] [13] [14]. The research area has a pH ranging from 4.9 -5.1 which is classified as acid.…”

“…When these acids get to the mineral parts of the soil, they do not provide H but displace the bases and increase the acidity of the soil [15]. Low pH conditions will affect the availability of phosphorus and potassium nutrients [12]. Soils with low base saturation and low pH can be toxic to plants [16].…”