twentyfourteen domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /var/www/vhosts/gcsar.gov.sy/httpdocs/en/wp-includes/functions.php on line 6131Hiba Sobh<\/strong> Abstract<\/strong><\/p>\n The research was carried out at Abu-Jarash Farm, (Faculty of Agriculture –\u00a0 Damascus University ) during\u00a0 the season\u00a0 2015\u20132016\u00a0 to determine the water\u00a0 requirement of Black cumin (Nigella sativa L.)<\/em>. And then study the effect of\u00a0 water\u00a0 stress ( through the application of several levels of deficit irrigation ) in the productivity of\u00a0 Black cumin<\/em> quantitative and qualitative to determine the crop response to drought conditions. Keywords:<\/strong> water stress, productivity, Black cumin, water use efficiency, deficit irrigation.<\/p>\n","protected":false},"excerpt":{"rendered":" Hiba Sobh General Commission for Scientific Agricultural Research \u060cAdministration of Natural Resourses Faculty of Agriculture,Damascus University,\u00a0 2017 Abstract The research was carried out at Abu-Jarash Farm, (Faculty of Agriculture –\u00a0 Damascus University ) during\u00a0 the season\u00a0 2015\u20132016\u00a0 to determine the water\u00a0 requirement of Black cumin (Nigella sativa L.). And then study the effect of\u00a0 water\u00a0 … Continue reading Effect of water stress on yield, and oil content of Black cumin (Nigella sativa<\/em> L.)<\/span>
\nGeneral Commission for Scientific Agricultural Research \u060cAdministration of Natural Resourses<\/strong>
\nFaculty of Agriculture,Damascus University,\u00a0<\/strong>
\n2017<\/strong><\/p>\n
\nFour irrigation\u00a0 treatments (100%, – 80%, – 70%, – 60%) of\u00a0 full irrigation were\u00a0 applied\u00a0 in four\u00a0 replications\u00a0 by\u00a0 using\u00a0 full\u00a0 random\u00a0 sectors.
\nThe Evapotransoiration crop and crop coefficient were calculated. Yield, water\u00a0 use efficiency, Crop response\u00a0 coefficient for deficit\u00a0 irrigation, oil ratio in seeds, and\u00a0 some indicators ( length of\u00a0 growth, date of\u00a0 flowering, height of plant, weight of 1000 seeds) were studied.
\nThe Evapotransoiration crop was determined by 3947 m3<\/sup>\/ h. The values of\u00a0 the\u00a0 crop\u00a0 coefficient\u00a0 were\u00a0 determined\u00a0 by\u00a0 stages\u00a0 of\u00a0\u00a0 growth\u00a0 with\u00a0 the following values: (0.4, 0.62, 1.17, 0.77).
\nDeficit\u00a0 irrigation has decreased the studied\u00a0 indicators ( length of growth, date of\u00a0 flowering, height of plant, weight of 1000 seeds, oil ratio in seeds, productivity) with significant differences in the treatments 70 % and 60% compared\u00a0 to the\u00a0 complete\u00a0 irrigation\u00a0 treatment, and\u00a0 without\u00a0 significant differences in treatment 80% Compared to treatment 100%.
\nTreatment 80%of the full irrigation was superior with the highest value of water use efficiency (0.25 kg \/ m3<\/sup>) compared to other treatment,\u00a0 Without a significant\u00a0 reduction\u00a0 in productivity\u00a0 compared to the\u00a0 savings in water consumption. The\u00a0 treatment\u00a0 also recorded\u00a0 the\u00a0 best\u00a0 value ( 0.23 ) of the crop\u00a0 response coefficient for deficit irrigation, indicating\u00a0 that the plant is well tolerated in water stress conditions.<\/p>\n