Ghasemali Dianati Tilaki; Mohsen Nasiri; Soheila Nouri; Seyed Hasan Kaboli
Volume 12, Issue 3 , August 2019, , Pages 335-349
farhang ghasriani; mina bayat; mirtaher ghaemi; hasan yeganeh
Volume 24, Issue 1 , May 2017, , Pages 142-151
Abstract
This research was aimed to investigate the effects of different harvesting intensities on forage yield and vitality of Aeluropus littoralis, as a key and important range species in the Tez Kharab rangelands, Urmia, Iran. The study was conducted in the rangelands around Urmia Lake and a 0.5-ha exclosure ...
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This research was aimed to investigate the effects of different harvesting intensities on forage yield and vitality of Aeluropus littoralis, as a key and important range species in the Tez Kharab rangelands, Urmia, Iran. The study was conducted in the rangelands around Urmia Lake and a 0.5-ha exclosure was selected and fenced in the first year of the study. The treatments consisted of four harvesting intensities including 0%, 25%, 50%, and 75%. Harvesting treatments were applied for four years during the growing season and at the start of livestock grazing. The harvested forage was air-dried and weighed to calculate the forage yield. In addition, the remaining yield of control and harvesting treatments were cut, dried, and weighed. Data were analyzed using a split-plot design in time. Finally, the effects of changes in phenological characteristics, forage yield, plant vitality and mortality were investigated. The effects of year and harvesting intensities as well as interaction effects of year and harvesting intensity were significant on forage yield (P<0.05). This indicates that forage yield differs in different years depending on climate conditions. Our results clearly showed that increased utilization led to reduced plant vitality. According to the obtained results, a harvesting intensity of 50% could be recommended as an optimal allowable use of forage with the least negative impacts on plant vitality.
Masoumeh Rezaie Mashaie; Ghorbanali Nematzadeh; Hossein Askari; Ehsan Shokri
Volume 21, Issue 1 , June 2014, , Pages 154-164
Abstract
Aeluropus littoralis, a monocot halophyte, plays an effective role in the conservation of water and soil resources and the production of forage for livestock in saline lands. In the current study, physiological characteristics of Aeluropus littoralis was investigated in response to different salinity ...
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Aeluropus littoralis, a monocot halophyte, plays an effective role in the conservation of water and soil resources and the production of forage for livestock in saline lands. In the current study, physiological characteristics of Aeluropus littoralis was investigated in response to different salinity levels. After disinfection, the seeds of Aeluropus littoralis were cultured in acid-washed sand in a growth chamber under controlled condition, temperature of 25/16 °C and photoperiod of 14/10 h for day/night. After 45 days of start culture, salinity treatments (0,100,200,300,400mM NaCl) were applied. The experimental design was completely randomized design with five treatments and three replications. After 14 days of last salinity treatment, plant materials were harvested. Results showed that the highest amount of shoot dry weight and ash content was observed in 200 mM NaCl. According to the results, potassium content of the shoot unlike sodium decreased with increasing salinity, while secreted sodium and potassium from plant aerial parts increased. Root carbohydrate content and the ratio of chlorophyll a to b increased in response to salinity. The concentration of starch and total soluble sugars of shoot demonstrated no significant relationship with the ratio of chlorophyll a/b at the highest salinity level. Our results suggested that the management of detrimental ions along with the regulation of plant assimilations effectively involved in the performance of Aeluropus littoralis to avoid the inhibitory effect of saline condition.