نتایج جستجو برای: and salinity

تعداد نتایج: 16830442  

Mehrdad Yarnia, Mohammad Bagher Khorshidi Benam

Salt stress is one of the major factors limiting crop productivity worldwide. Grain amaranth is new crop with high yield potential and good nutrition value which can be a good substitute for salt-sensitive crops in saline areas. This research was conducted to evaluate different level of salinity and applied salinity stress at several growth stages on some morphological and physiological traits ...

Journal: :محیط زیست طبیعی 0
حسن جهانبازی استادیار، عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان چهارمحال و بختیاری سید محمد حسینی نصر استادیار، عضو هیئت علمی دانشکدۀ منابع طبیعی دانشگاه علوم کشاورزی و منابع طبیعی ساری خسرو ثاقب طالبی دانشیار، عضو هیئت علمی مؤسسۀ تحقیقات جنگل‏ها و مراتع کشور سید محمد حجتی استادیار، عضو هیئت علمی دانشکدۀ منابع طبیعی دانشگاه علوم کشاورزی و منابع طبیعی ساری.

drought and salinity are the most important environmental stresses that are causing adverse effects on natural ecosystems. there are species among iranian natural germplasm that are resistant to environmental harsh conditions. restoring of degraded ecosystems, promoting of biodiversity and increasing of species richness will provide by identifying of these species. almond species with broad eco...

Journal: Desert 2015

Water salinity and drought are the major abiotic stresses limiting turf grass growth. On the other hand, shortage of waterresources and salinity of water and soil in the arid and semi-arid zones such as Iran, are the restricting factors in developinglawn turf grasses. An experiment was conducted to evaluate the combined effects of water salinity and deficit irrigation ontall fescue (Festuca aru...

2015
Priyanka Das Kamlesh K. Nutan Sneh L. Singla-Pareek Ashwani Pareek

Soil salinity is one of the main constraints affecting production of rice worldwide, by reducing growth, pollen viability as well as yield of the plant. Therefore, detailed understanding of the response of rice towards soil salinity at the physiological and molecular level is a prerequisite for its effective management. Various approaches have been adopted by molecular biologists or breeders to...

2015
Rick Lumpkin

Surface salinity variations and processes affecting surface salinity in the high-salinity region of the subtropical North Atlantic (the SPURS-1 area) are investigated by combining data from in situ observations and satellite remote-sensing measurements. On temporal average, the surface freshwater flux term (evaporation minus precipitation) in the SPURS-1 region increases mixed-layer salinity. O...

  Abstract In most southern provinces of Iran, soil salinity is a growing problem, particularly in irrigated agricultural areas, and has been found to reduce wheat yield, dramatically. To investigate the effect of sodium chloride on two wheat (Triticum aestivum L.) cultivars, four levels of salinity: 0, 4, 8 and 12 dS/m, were employed as a factorial experiment arranged in a randomized complet...

Journal: :تولید گیاهان زراعی 0

this research was conducted to study the effects of different salinity levels and exposure times on grain yield and yield components in a green-house experiment at gorgan university of agricultural science and natural resources during 2007- 2008 growing season. a factorial sand culture experiment with three completely randomized replications was used. salinity levels were -0.002, -0.25, -0.50, ...

Journal: :آب و خاک 0
محمد حسن لی حامد ابراهیمیان مسعود پارسی نژاد

using of saline water for irrigation of crops is known as a strategy of on-farm irrigation water management. in this study, the cyclic using of saline and fresh water and its effect on soil salinity were investigated. field experiments were carried out in randomized complete block design under drip irrigation for maize crop with 9 treatments. the treatments were based on alternative irrigation ...

Journal: :پژوهش های تولید گیاهی 0
لیلا لطف الهی حسین ترابی حشمت امیدی

considering the extent of salinity in soils of iran, abiotic stresses such as salinity are serious threat to agricultural production, yield and essential oil of medicinal plants. recognition of threshold for salt tolerance and determining the slope of yield loss in medicinal plants has an important role in the selection of suitable lands for their cultivation. the effect of salinity stress on s...

Journal: :iran agricultural research 2013
a. dehdari

in order to study the effects of different salinity levels on turnip (brassica rapa l.), an investigation was conducted at yasouj university, iran, in 2010. the effects of four salinity levels including 1.92, 9.87, 19.6 and 21.94 ds m-1 (20:1 ratio of nacl: cacl2 in hoagland solution) on germination, vegetative and maturity stages of turnip (baherghan landrace) were investigated. the results re...

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