number of downloads : ?
language
eng
Author
KAMIDOHZONO, Akira Project Rice-based Agriculture Development in Afghanistan
NEZAM, Abdul Waris Sheshambagh Agricultural Experiment Station
SADAT, Sayed Azmar Sheshambagh Agricultural Experiment Station
Description
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.
Subject
available Zn
micronutrients
Journal Title
Japan Agricultural Research Quarterly: JARQ
Volume
48
Issue
3
Start Page
299
End Page
306
ISSN
0021-3551
ISSN(Online)
2185-8896
Published Date
2014-07-01
DOI
Publisher
JARQ編集委員会
Publisher Transcription
JARQ ヘンシュウ イインカイ
Publisher Aalternative
Japan International Research Center for Agricultural Sciences
NII Type
Journal Article
Format
PDF
Text Version
出版社版
Gyoseki ID
e26112
OAI-PMH Set
Faculty of Life and Environmental Science