Arid
Variable Rate Application Technology for Optimizing Alfalfa Production in Arid Climate
Al-Gaadi, Khalid A.1,2; Patil, Virupakshagouda C.2; Tola, ElKamil H. M.2; Madugundu, Rangaswamy2; Marey, Samy A.2; Al-Omran, A. M.3; Al-Dosari, Ali4
通讯作者Patil, Virupakshagouda C.
来源期刊INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY
ISSN1560-8530
EISSN1814-9596
出版年2015
卷号17期号:1页码:71-79
英文摘要

This study was to investigate the benefits of variable rate application technology for optimum production of alfalfa in arid climate. The study area was divided into two management zones by employing Fuzzy c-means cluster analysis. A field experiment was conducted in Split plot design. Irrigation treatments allocated to the main plots in January 2012 included: Irrigation at evapotranspiration (ETc) of 100% (I1 approximate to 3130.54 mm/ha/annum), 90% (I2 approximate to 2817.49 mm/ha/annum), 80% (I3 approximate to 2504.41 mm/ha/annum), and 70% (I4 approximate to 2191.38 mm/ha/annum). The fertilizer levels (N:P2O5:K2O kg/ha/year) allocated to sub plots included: F1 - low (126:92:300), F2 - medium (234:138:400) and F3 - high (342:184:500). After retrofitting of variable rate irrigation (VRI) system on to the center pivot in May 2012, fertilizer levels formed main treatments and irrigation levels formed sub-treatments. The highest yield in both the harvests was obtained by irrigation at 80% ETc. Across the two management zones and two harvests made in September and October 2012, medium fertilizer level (@ 234:138:400 kg/ha/year of N:P2O5:K2O) resulted in higher alfalfa yield than the other two fertilizer levels. VRI showed benefits only in September 2012 harvest. In this harvest, adoption of VRI at 70% ETc in MZ1 and 80% ETc in MZ2 resulted in water saving of 30 and 20%, respectively. The following conclusions can be drawn from this study: 1. Variable rate application of irrigation water for the two management zones resulted in water saving of up to 30% in one out of two harvests. 2. Variable rate application of fertilizers was not effective and uniform rate application of fertilizers @ 234:138:400 kg/ha/year of N:P2O5:K2O resulted in higher alfalfa yield in both the management zones. (C) 2015 Friends Science Publishers


英文关键词Fertilizer levels Irrigation regimes Management zones Yield mapping Saudi Arabia
类型Article
语种英语
国家Saudi Arabia
收录类别SCI-E
WOS记录号WOS:000346665900009
WOS关键词SITE-SPECIFIC MANAGEMENT ; LEAF-AREA INDEX ; CROP YIELD ; SATELLITE DATA ; SAUDI-ARABIA ; WATER-USE ; IRRIGATION ; DELINEATION ; ZONES ; CLASSIFICATION
WOS类目Agriculture, Multidisciplinary ; Biology
WOS研究方向Agriculture ; Life Sciences & Biomedicine - Other Topics
来源机构King Saud University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/187918
作者单位1.King Saud Univ, Coll Food & Agr Sci, Dept Agr Engn, Riyadh 11421, Saudi Arabia;
2.King Saud Univ, Precis Agr Res Chair, Riyadh 11451, Saudi Arabia;
3.King Saud Univ, Coll Food & Agr Sci, Dept Soil Sci, Riyadh 11451, Saudi Arabia;
4.King Saud Univ, Coll Arts, Dept Geog, Riyadh 11451, Saudi Arabia
推荐引用方式
GB/T 7714
Al-Gaadi, Khalid A.,Patil, Virupakshagouda C.,Tola, ElKamil H. M.,et al. Variable Rate Application Technology for Optimizing Alfalfa Production in Arid Climate[J]. King Saud University,2015,17(1):71-79.
APA Al-Gaadi, Khalid A..,Patil, Virupakshagouda C..,Tola, ElKamil H. M..,Madugundu, Rangaswamy.,Marey, Samy A..,...&Al-Dosari, Ali.(2015).Variable Rate Application Technology for Optimizing Alfalfa Production in Arid Climate.INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,17(1),71-79.
MLA Al-Gaadi, Khalid A.,et al."Variable Rate Application Technology for Optimizing Alfalfa Production in Arid Climate".INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY 17.1(2015):71-79.
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