言語 |
英語
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著者 |
KAMIDOHZONO, Akira
Project Rice-based Agriculture Development in Afghanistan
NEZAM, Abdul Waris
Sheshambagh Agricultural Experiment Station
SADAT, Sayed Azmar
Sheshambagh Agricultural Experiment Station
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内容記述(抄録等) | Paddy soil properties in 20 villages in Nangarhar province, East Afghanistan were investigated. The soils, which were mostly classified as sandy loam or loam, were alkaline and contained carbonate ranging from 4.9 to 16.9 g C kg–1. The average total N and organic C, (0.36 N and 6.2 C g kg–1) was low compared to the average values in tropical Asian paddy soils. Calcium was the predominant exchangeable cation followed by Mg, K and Na in that order. The available P (Olsen-P) content was 20.7 mg P2O5 kg–1 on average and did not vary significantly throughout the study area, while the available Si content, (261 mg SiO2 kg–1) was comparable with the level in tropical Asia. The available micronutrients (DTPA-TEA extraction) Fe, Mn, Cu and Zn, were 35.9, 9.6, 4.75 and 0.33 mg kg–1 on average. The paddy soil properties were generally low in fertility compared to those in tropical Asia, while the available P and Zn contents were deficient for rice growth. Paddy fields in Nagarhar province could be divided into groups according to the location. The paddy soil properties varied in Kabul and Kunar watersheds and were influenced by spot distribution of different types of parent materials such as limestone, dolomite and lava.
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主題 | available Zn
micronutrients
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掲載誌名 |
Japan Agricultural Research Quarterly: JARQ
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巻 | 48
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号 | 3
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開始ページ | 299
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終了ページ | 306
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ISSN | 0021-3551
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ISSN(Online) | 2185-8896
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発行日 | 2014-07-01
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DOI | |
出版者 | JARQ編集委員会
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出版者ヨミ | JARQ ヘンシュウ イインカイ
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出版者別表記 | Japan International Research Center for Agricultural Sciences
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資料タイプ |
学術雑誌論文
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ファイル形式 |
PDF
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著者版/出版社版 |
出版社版
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業績ID | e26112
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部局 |
生物資源科学部
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