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Impact Of Improving Chemical Properties Of Newly Established Acid Sulphate Soils For Paddy Growth
Jelly Amalia Santri(a*), Azwar Maas(a), Sri Nuryani Hidayah Utami(a), Wahida Annisa Yusuf(b)

a)Department of Soil Science, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta, Indonesia
*jellyamaliasantri[at]gmail.com

b)Indonesian Swampland Agricultural Research Institute (ISARI), South Kalimantan, Indonesia


Abstract

This research aims to determine the effect of leaching on soil characteristics, water quality, and the benefit of inorganic fertilizer and local organic matter to support a new established filed of rice growth on actual sulfuric acid soil. The research began with composting in the Belandean experimental field, pot experiments in greenhouse and soil, water and plant analysis in laboratory of Balittra, Banjarbaru, Kalimantan Selatan from February to May 2019. Randomized complete design was set on experimental field with two factors and three replications. The first factor is leaching by system, there are (1) DO = unreturned leaching water and (2) D1 = returned leaching water. The second factor is fertilization, there are (1) P0 = no additional fertilizer, (2) P1 = 50% of recommended NPK fertilizers, (3) P2 = 50% of recommended NPK fertilizers + Compost, (4) P3 = 100% of recommended NPK fertilizers + amount of compost nutrient which is substituted by inorganic fertilizer, and (5) P4 = 100% recommended NPK fertilizers. The results showed that by unreturned leaching water had the value of Eh, EC and soil Fe and SO4 content lower than other treatments. However, the lowest Al-dd and H-dd values were found in the treatment of returning water from washing and fertilizing NPK 50% recommended dosage by adding compost to inorganic organic matter. This treatment also has the highest biomass production value when compared to other treatments.

Keywords: Acid sulphate soil, Ameliorant, Leaching water quality, Paddy growth

Topic: Soil and Water Management

Link: https://ifory.id/abstract/MDg2v7K9zAhW

Conference: The 4th International Conference on Green Agro-industry UPN Veteran Yogyakarta (ICGAI 2019)

Plain Format | Corresponding Author (Jelly Amalia Santri)

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