Mohammad Hossein Banakar; Alimohammad Cheraghi; Mehdi Karimi; Mohammadhasan Rahimian
Abstract
Due to shortage of fresh water resources and increase in the salinity of soil and water resources, use of halophytes has a great importance for forage production and human food security. To compare the effect of different irrigation methods (furrow, bubbler, and drip) on some halophyte forage species, ...
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Due to shortage of fresh water resources and increase in the salinity of soil and water resources, use of halophytes has a great importance for forage production and human food security. To compare the effect of different irrigation methods (furrow, bubbler, and drip) on some halophyte forage species, a research was conducted in Sadooq Salinity Research Farm of NSRC in Yazd, Iran, for three years. The experimental design was arranged in complete randomized block design in the form of split plot with three replications, Main plots were different irrigation methods (furrow, bubbler, drip) and halophyte species (A. canescens, A. halimus, A. lentiformis, A. nummularia, and K. indica) were laid out as sub main plots. All plots were irrigated with saline water of 14 dSm-1. During the growing season, all plants were cut every 3-4 months and yield and yield component as well as water use efficiency were measured. Results indicated that A. canescens, followed by A. halimus, with yield of 7.48 and 3.28 ton/ha dry forage, respectively, had the highest forage yield with significant differences (p< 0.05) with each other and with other treatments. Results showed that, under furrow irrigation method, A. canesence and K. indica had the maximum and minimum water use efficiency, respectively. The same trend was also observed for bubbler and drip irrigation methods, as A. canesence had the maximum of water use efficiency under these methods. Based on the results, the highest water use efficiency (2.26 kg/m3) was observed for A. canesence irrigated with bubbler method, and the lowest (0.07 kg/m3) was for K. indica under drip irrigation method. Consequently, based on the results of this experiment and considering the economical and operational aspects of irrigation methods, A. canesence, with dry yield of 7.73 and 8.81 ton/ha under furrow and bubbler irrigation methods, respectively, could be introduced as the best halophyte species for forage production under saline conditions. The results will be more helpful if the experiment is carried out again with determination of water requirement for each plant based on evapotranspiration or soil moisture fluctuations.
GH RANJBAR; M.J ROUSTA; A.M CHERAGHI
Abstract
To determine the effects of saline water with and without magnetic treatments on seed emergence and yield of wheat, two experiments were conducted in the National Salinity Research Center, Iran. The first experiment was done under controlled environment conditions with day and night temperatures of 25 ...
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To determine the effects of saline water with and without magnetic treatments on seed emergence and yield of wheat, two experiments were conducted in the National Salinity Research Center, Iran. The first experiment was done under controlled environment conditions with day and night temperatures of 25 ◦C and 15 ◦C, respectively. The emerging wheat seeds were measured under four irrigation water qualities including 2.5, 6, 10 and 12.7 dS/m with and without magnetic device. To determine the effect of magnetic treatment on wheat yield under saline conditions, another experiment was done in 18 fiber glass boxes (0.5 x 0.45 x 0.50 m deep) in the ambient environment for two years. Treatments included use of magnetic device (Model: MAG 4000) and without it and three water qualities (2, 6 and 10 dS/m). Results showed that salinity treatments had no significant effect on final emerged seeds and emergence percentage. However, salinity significantly reduced rate of emergence, coleoptile length, grain yield, plant height, spike length, and the number of kernels per spike. Magnetic treatment and interaction between magnetic treatment and salinity had no effect on the number of emerged plant, emergence rate, emergence percentage, coleoptile length, grain yield, plant height, spike length, and number of kernels per spike. These results were obtained using a specific magnetic device. Probably, using a different magnetic device with different composition of irrigation water applied to various crops may lead to different results.