Arid
DOI10.1016/j.eja.2016.07.003
Field evaluation of mixed-seedlings with rice to alleviate flood stress for semi-arid cereals
Awala, Simon K.1,3; Yamane, Koji1; Izumi, Yasuhiro2; Fujioka, Yuichiro4; Watanabe, Yoshinori1; Wada, Kaede C.1; Kawato, Yoshimasa1; Mwandemele, Osmund D.3,5; Iijima, Morio1,5
通讯作者Iijima, Morio
来源期刊EUROPEAN JOURNAL OF AGRONOMY
ISSN1161-0301
EISSN1873-7331
出版年2016
卷号80页码:105-112
英文摘要

Flash floods, erratically striking semi-arid regions, often cause field flooding and soil anoxia, resulting in crop losses on food staples, typically pearl millet (Pennisetum glaucum L.) and sorghum (Sorghum bicolor (L) Moench). Recent glasshouse studies have indicated that rice (Oryza spp.) can enhance flood stress tolerance of co-growing dryland cereals by modifying their rhizosphere microenvironments via the oxygen released from its roots into the aqueous rhizosphere. We tested whether this phenomenon would be expressed under field flood conditions. The effects of mix-planting of pearl millet and sorghum with rice on their survival, growth and grain yields were evaluated under controlled field flooding in semi-arid Namibia during 2014/2015-2015/2016. Single-stand and mixed plant treatments were subjected to 11-22 day flood stress at the vegetative growth stage. Mixed planting increased plant survival rates in both pearl millet and sorghum. Grain yields of pearl millet and sorghum were reduced by flooding, in both the single-stand and mixed plant treatments, relative to the non-flooded upland yields, but the reduction was lower in the mixed plant treatments. In contrast, flooding increased rice yields. Both pearl millet rice and sorghum rice mixtures demonstrated higher land equivalent ratios, indicating a mixed planting advantage under flood conditions. These results indicate that mix-planting pearl millet and sorghum with rice could alleviate flood stress on dryland cereals. The results also suggest that with this cropping technique, rice could compensate for the dryland cereal yield losses due to field flooding. (C) 2016 The Authors. Published by Elsevier B.V.


英文关键词Intercropping Pearl millet Radial oxygen loss Rice Soil flooding Sorghum
类型Article
语种英语
国家Japan ; Namibia
收录类别SCI-E
WOS记录号WOS:000383942400010
WOS关键词WATER-USE EFFICIENCY ; RADIAL OXYGEN LOSS ; BICOLOR L. MOENCH ; PEARL-MILLET ; INTERNAL AERATION ; SORGHUM ; GROWTH ; AFRICA ; TOLERANCE ; NAMIBIA
WOS类目Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/192875
作者单位1.Kindai Univ, Grad Sch Agr Sci, Nara 6318505, Japan;
2.Univ Shiga Prefecture, Sch Environm Sci, Hikone 5228533, Japan;
3.Univ Namibia, Fac Agr & Nat Resources, Private Bag 13301, Windhoek, Namibia;
4.Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Sendai, Miyagi 9808578, Japan;
5.JST JICA, SATREPS, Tokyo, Japan
推荐引用方式
GB/T 7714
Awala, Simon K.,Yamane, Koji,Izumi, Yasuhiro,et al. Field evaluation of mixed-seedlings with rice to alleviate flood stress for semi-arid cereals[J],2016,80:105-112.
APA Awala, Simon K..,Yamane, Koji.,Izumi, Yasuhiro.,Fujioka, Yuichiro.,Watanabe, Yoshinori.,...&Iijima, Morio.(2016).Field evaluation of mixed-seedlings with rice to alleviate flood stress for semi-arid cereals.EUROPEAN JOURNAL OF AGRONOMY,80,105-112.
MLA Awala, Simon K.,et al."Field evaluation of mixed-seedlings with rice to alleviate flood stress for semi-arid cereals".EUROPEAN JOURNAL OF AGRONOMY 80(2016):105-112.
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