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Rahmat Saleh
Universitas Surabaya
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Journal : Journal of Tropical Soils

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Carbon Storage and Carbon Dioxide Emission as Influenced by Long-term Conservation Tillage and Nitrogen Fertilization in Corn-Soybean Rotation Utomo, Muhajir; Buchari, Henrie; Banuwa, Irwan Sukri; Fernando, Lanang Koko; Saleh, Rahmat
JOURNAL OF TROPICAL SOILS Vol. 17 No. 1: Januari 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i1.75-84

Abstract

Although agriculture is a victim of environmental risk due to global warming, but ironically it also contributes to global greenhouse gas (GHG) emission. The objective of this experiment was to determine the influence of long-term conservation tillage and N fertilization on soil carbon storage and CO2 emission in corn-soybean rotation system. A factorial experiment was arranged in a randomized completely block design with four replications. The first factor was tillage systems namely intensive tillage (IT), minimum tillage (MT) and no-tillage (NT). While the second factor was N fertilization with rate of 0, 100 and 200 kg N ha-1 applied for corn, and 0, 25, and 50 kg N ha-1 for soybean production. Samples of soil organic carbon (SOC) after 23 year of cropping were taken at depths of 0-5 cm, 5-10 cm and 10-20 cm, while CO2 emission measurements were taken in corn season (2009) and soybean season (2010). Analysis of variance and means test (HSD 0.05) were analyzed using the Statistical Analysis System package. At 0-5 cm depth, SOC under NT combined with 200 kg N ha-1 fertilization was 46.1% higher than that of NT with no N fertilization, while at depth of 5-10 cm SOC under MT was 26.2% higher than NT and 13.9% higher than IT.  Throughout the corn and soybean seasons, CO2-C emissions from IT were higher than those of MT and NT, while CO2-C emissions from 200 kg N ha-1 rate were higher than those of 0 kg N ha-1 and 100 kg N ha-1 rates.  With any N rate treatments, MT and NT could reduce CO2-C emission to 65.2 %-67.6% and to 75.4%-87.6% as much of IT, respectively. While in soybean season, MT and NT could reduce CO2-C emission to 17.6%-46.7% and 42.0%-74.3% as much of IT, respectively.  Prior to generative soybean growth,   N fertilization with rate of 50 kg N ha-1 could reduce CO2-C emission to 32.2%-37.2% as much of 0 and 25 kg N ha-1 rates.
Co-Authors Abdul Kohar Ade Latifa, Ade Adi Kurniawan, Eka Afriva Khaidir Akhyar, M. Nur Alqarni, Wais Andi Faisal Bakti & Venny Eka Meidasari Andi Mariani Z., Andi Anggraini, Titi Anita Munawwaroh, Anita Asmara, Galuh Jati Asty Khairi Inayah Syahwani Baswindro Costa, Tiago Dadang Iwan Riswandi Daniel Happy Putra Deni Yanuar, M. Ikom Deny Setiawan Dini Yuniarti Ditaellyana Artha Dwiyana, Asnurbaety Fatoni, Zainal Fernando, Lanang Koko Gea Dwi Asmara Ginoga, Lesia Fatma Hadikusumo, Reina A. Hayatun Nufus Henrie Buchari, Henrie Hizir, Hizir Husna, Mawaddatul Iban, Angela Ibnu, Fitranita Iman Firmansyah Iman Firmansyah Irwan Irwan Ismail Ismail Iza, Nikmatul Jalil.M, Abd. Khalisni Khoirun Nisa Lesia Fatma Ginoga Lestari, Mathilda Sri Lisdayanti, Lisdayanti Lutfi Nurcholis Mashur Razak Meita Sondang Rizki, Meita Sondang Merdekawati, Eka Moh. Basri Muchsin Muchsin Nashiruddin, Rafie Neni Murniati Ningrum, Vanda Norman Luther Aruan, Norman Luther Nurdin, Andi Asmiati Oktafiani, Irin Pratama, Dhipo Rahmat Saleh Rahmatul Ahya Ramadhan, Masri Ramadhani, Suci Qadriana Ratih Pratiwi Resti Jayeng Ramadhanti Riyanto Riyanto Riyanto Roni Ekha Putera Rosyanti, Novi Ruslan, Arief Sabri Sabri Safar Nasir, Muhammad Salfiadis, Salfiadis Sianipar, Henry Siti Zubaidah Sitohang, Marya Yenita Soehartono SRI RAHAYU Suharni M.Pd Sujatmiko Sujatmiko Sunuyeko , Nurcholis Susriyati Mahanal Syahidin Syahidin, Syahidin Syahwani, Asty Khairi Inayah Syamsudin, Muhammad Hasan TUNJUNG SULAKSONO Ummah, Roisatul Ummi Chasanah, Ummi Utami, Dian Wahyu Utomo, Muhajir Varita, Nirma Wasilah Wasilah Wibowo, Wahyu Adi Setyo Yamaly, Fadhil Yusnaini Yusnaini Zakia Asrifah Ramly Zetra, Aidinil