Effects of deficit irrigation on the yield, yield components, water and irrigation water use efficiency of spring canola
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 2
Abstract
Rapeseed is the third most important edible oil source after soybean and palm in the world and is the most widely cultivated oilseed crop in Iran. Because of oil and many other usages of rapeseed this experiment was conducted to evaluate the effects of water stress on yield and yield components, total biomass, evapotranspiration, yield response factor to water stress, water use efficiency (WUE) and irrigation water use efficiency (IWUE) of spring canola (Brassica napus L.) in Agricultural Research Station of Tabriz University, Iran. Spring type of canola was planted in furrows and irrigated during the growing season. In this research four irrigation treatments (applied water at the ratios of 1.0, 0.8, 0.65, and 0.5 of canola potential water requirements as I1, I2, I3, and I4 treatments, respectively) were tested. Results showed the evapotranspiration, WUE and IWUE of canola were all affected by controlled volumes of irrigation water. The highest amount of daily evapotranspiration was observed as 9.84 mm d-1 in mid July at the treatment I1. The WUE reached its maximum value at a seasonal evapotranspiration of 483 mm, and then started to decrease with increasing evapotranspiration. The values of WUE and IWUE were between 2.97 - 3.13 and 3.57-4.29 kg ha-1mm-1, respectively. The amount of yield response factor (Ky) was found smaller than 1 in the canola growing season. It was concluded that canola was a water stress tolerant crop and could be cultivated in arid and semi arid regions such as Iran.
Authors and Affiliations
Abolfazl Majnooni-Heris, Amir Hossein Nazemi, Ali Ashraf Sadraddini
Keywords
Related Articles
- EP ID EP37844
- DOI -
- Views 173
- Downloads 0
Conservation Agriculture: Research Status, Opportunities and Challenges in Dryland Areas of Pakistan
Soil degradation, climate change and increasing cost of inputs are serious challenges for crop production in dryland areas of Pakistan. Mismanagement of natural resources through clean cultivation and intensive tillage a...
Path analysis of grain yield, some morphological traits and essential oil content in different fennel (Foeniculum vulgare Mill.) populations
In order to study of the cause and effect relationship among some morphological and agronomic traits of 19 populations of fennel (Foeniculum vulgare Mill.), an experiment was conducted based on randomized complete bloc...
Evaluation of genetic relationships of some iranian asian pears (Pyrus pyrifolia) using SSR markers
New several genotypes are found in the forests of the eastern Guilan province that are morphologically more like the Asian pears and have also some agronomical important traits such as very large, high quality of fresh...
Introduction of mirtenal as an indicator component in essential oil of Cuminum cyminum Isfahan variety
Cumin (Cuminum cyminum) is one of the most important medicinal and aromatic plants which has high economic value in spite of its low yield. The seeds of Cuminum cyminum Isfahan variety were treated by six levels of che...
Effects of land use change on some physical and chemical properties of soil in rangelands of Kerman province
This research was aimed to investigate the effects of land use change in three study regions of Kerman province. In this regard, a control site (rangeland) and a site with land use change were selected. Soil samples wer...