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All Journal AGROEKOTEKNOLOGI PERTANIAN TROPIK
Purba Marpaung
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry

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Journal : PERTANIAN TROPIK

 1 
DETERMINATION TYPE OF ALLOPHANE ON ANDISOL IN DOLAT RAKYAT VILLAGE TIGA PANAH DISTRICT, REGENCY OF KARO Jupri Simamora; Purba Marpaung; Alida Lubis
Jurnal Pertanian Tropik Vol. 2 No. 3 (2015): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.742 KB) | DOI: 10.32734/jpt.v2i3.2916

Abstract

The aim of the research was to determinate the type of Allophane minerals by means of Thermogram and to know the type of Allophane minerals with Allophane–Organic Matter relations. The research was done in Dolat Rakyat villages, District of Tiga Panah Karo Regency, In Soil Fertility Laboratory University of North Sumatera, and College of Chemical Industry (PTKI), Medan in June - October 2014. Soil type is Andisol. The result of the research in Dolat Rakyat Village Tiga Panah District, Regency of Karo Thermogram interpretation showed that type of Allophane minerals Andisol that is Allophane B. Allophane-Organic Matter relations showed that type of Allophane minerals is Allophane B with positive relations between Allophane-Humic Acid; negative relations between Allophane-Fulvic Acid, and Allophane-Humic Acid+Fulvic Acid.
The Mapping of Irrigated Paddy Fields which were Polluted by Detergent Waste in Kolam Village, Percut Sei Tuan Sub-district, Deli Serdang District Mulkan Syahputra; supriadi; Marpaung, Purba
Jurnal Online Pertanian Tropik Vol. 8 No. 2 (2021): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.026 KB) | DOI: 10.32734/jopt.v8i2.8078

Abstract

Rice is the staple food of the Indonesian people and in some places polluted by waste. This research aim was to provide a survey and map on the effects of detergent waste (phosphate available), electrical conductivity and soil pH in Kolam Village, Percut Sei Tuan Subdistrict of Deli Serdang District and analysis of sample points to P available, electrical conductivity and soil pH. This research started in September 2017 until January 2018. The method used was Grid Free and P available analysis used Bray II method, analysis of Electrical Conductivity with conductivity meter and analysis of soil pH with a pH meter. The results showed that the P available distribution consisted of very low (18%), low (52%) and moderate (30%). The distribution of soil electrical conductivity was low and the pH of the soil was acidic. Based on the analysis of sample points on P available, Electrical Conductivity and soil pH showed that the farther the distances from the irrigation pollutant channel, the availability of P decreased (0.088 ppm / meter) but did not affect the pH and electrical conductivity.
Co-Authors Abdul Rauf Alida Lubis Alida Lubis Andrian Andrian Bintang Sitorus candra setiadi Cecep Kusmana Christian Natanael Tarigan Daniel Siregar Elva Rizkya Masni Fauzi Fauzi Gilbert Fernando Cibro Hamidah Hanum jamila Jamila Jeni Swanda jonson armando simamora Jupri Simamora Jupri Simamora Kemala Sari Lubis Mhd Arian Torang Mulkan Syahputra Nikson Sitinjak Posma Marbun Razali Rika Tamika Rima Rahmadani Munthe Samuel Evans Ketaren Sri Wahyuni Tambunan Supriadi Supriadi Supriadi Thasniema Putri