Peningkatan Hasil Padi di Tanah Sulfat Masam melalui Kombinasi Perlakuan Lindi dan Olah Tanah

Abstract

<p>ABSTRACT<br /> <br />Tidal swamp lands containing acid sulphate is easily become idle land, which can be fixed by reducing oxidation process of pyrite (FeS2). The pyrite oxidation causes disturbance on the growth and yield of rice plant. An experiment was conducted by means soil leaching in order to reduce accumulation of pyrites. The research had been conducted in Simpang Jaya village, Barito Kuala District in 2012 using a split plot design with three replications. As the main plot was leaching, and no leaching treatment, while as the subplot was soil tillage, i.e., 1) control, 2) weeds cleared without tillage, 3) soil tillage at a depth of 15 cm, and 4) soil tillage at a depth of 30 cm. The results showed that the leaching treatment combined with tillage at a depth of 15 cm or 30 cm increased the number of rice tillers, shoot dry weight, and number of panicles per hill, and number of seeds per hill, thus the leaching treatment was able to increase rice production.</p><p>Keywords: acid sulphate, leaching, pyrite, tidal swamp land</p>

The Effect of Biochar, Lime, and Compost on The Properties of Acid Sulphate Soil

“…The soils develop due to drainage of pyrite (FeS 2 ) parent material (Muhrizal Sarwani, 2013;Masulili, 2015). Soils with such condition can be improved by leachate treatment, to reduce the concentration of toxic compounds such as Fe 2+ , SO 4 2-, H + , and soil acidity (M. Alwi et al, 2010;Ar-riza et al, 2015). Acid Correspondence: Juhrian; Graduate School of Lambung Mangkurat University, Banjarbaru (70714), Indonesia.…”

“…Cultivation plants in this soil often experience Fe 2+ poisoning, organic acids, and H 2 S (Shamshuddin et al, 2013). Ferro compounds are known as Fe-poisons which can cause a decrease in rice yield of 30-100%, depending on the level of poisoning and soil fertility (Majerus et al, 2007); (Ar-riza et al, 2015).…”

“…Uninterrupted underground water, acid sulphate is benign (Michael, 2015). The beginning of land damage due to oxidation of FeS 2 , oxidation causes an increases in the concentration of toxic Fe 2+ and S compounds that result in acidification of the soil (Alwi et al, 2010;Ar-riza et al, 2015). Iron toxicity is one of the most common problems in the lowland rice farming system, many swamps and lowlands (rainfed and irrigated lowlands or even mangrove swamps) (Chérif et al, 2009;Nugraha & Rumanti, 2017).…”

“…Oxidation that occurs in a long time will increase the acidity of the land. This condition can cause mineral lattice unsteady, thereby dissolving heavy metals like Al, Zn, and Cu (Suriadikarta, 2005;Ar-riza et al, 2015). The decline in soil quality is not only due to drought, excavation, exposure to the air due to drought, but also caused by human factors when they do not conduct land management system properly and sustainably (Asir et al, 2005;Abdurachman et al, 2005;Las et al, 2006;Dariah et al, 2015).…”

Uji Adaptasi Sorgum Manis Sebagai Tanaman Sela Di Antara Tanaman Karet Belum Menghasilkan

“…Hasil penelitian Wibawa & Rosyid (1995) menunjukkan bahwa perbaikan struktur tanah ultisol melalui pengolahan tanah dapat meningkatkan serapan unsur hara N dan P sehingga sistem perakaran menjadi lebih baik. Selanjutnya menurut Ar-riza et al (2001), tujuan utama dari pengolahan tanah adalah membentuk agregat yang s t a b i l s e h i n g g a p e n a n a m a n , perkecambahan, perkembangan akar, pergerakan air, dan udara akan lebih mudah dan bebas.…”