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The experiment carried out to improve the efficiency of drip irrigation system , based on soil moisture. The indirect measure of humidity Was used in the experiment, connected with the pointing device (separator continued), and a control device pr ogrammed on a low humidity degree, which is degree the field capacity of the soil and which value is 25%, and on a high moisture degree which is saturation degree at 75%..
This study was conducted during the period 2014-2016 in the nursery College of Agriculture, University of Tishreen, this study aimed to calculate the percentage of germination of the seeds of Laurus nobilis and Pinus pinea using different proportio ns of olive cake with a mixture Arboretum, and study some of the planter resulting properties as well as some physical and chemical characteristics of agricultural mixture that used. were analyzed using spss statistical program The mixing nursery soil (sand, soil 1: 1) with olive cake rates (25,50,75,100)% . assessment: germination percentage, wet and dry weight of shoot and root grouped, volumetric weight, moisture middle and chemical characteristics. , For germination percentage it has increased every germination of seeds of laurel and pine fruiting increase the proportion of bagasse in the agricultural center in general ratio, and on the contrary has increased wet weight of shoots with decreasing proportion of olive cake in both types studied. For the physical properties there was a decrease in the volumetric weight of the agricultural community to increase the proportion of the studied olive cake, as soil moisture ratio increased to increase the proportion of bagasse. Rich agricultural circles used container Regarding chemical properties have been observed on the olive cake metal elements (iron, magnesium and copper), The salinity and acidity remained within normal limits, so the study has demonstrated the validity of the use of olive cake as a medium for planting in whole or in part agricultural mixtures used in nurseries.
The determination of sludge characteristics of wastewater treatment process has the primary role in the treatment and disposal. This research aims to determine the sludge characteristics by studying specific resistance factor of the sludge on the f iltration at Merge Maarban station, so we took samples of sludge from the station and made several laboratory experiments and we got the time of intensify sludge, moisture and The concentration of the solid substances. we calculated specific resistance factor values of the sludge when the moisture values are ( 97.5 , 95.5 , 94 , 92 , 91 , 88 ) %. The research results showed a decrease in resistivity factor value of sludge on the filtration as its moisture become less and the sludge drying time takes tow weeks.
استھدف البحث دراسة تأثیر رطوبة البودرة على عملیة اللحام بالقوس المغمور. یسعى بحثنا للتركیز على العیوب الناتجة عن رطوبة البودرة و معرفة الحدود المسموحة للرطوبة خلال عملیات اللحام.
This research was conducted in the countryside of Tartous, to aim for the analysis of moisture, protein, TSS and pH of royal jelly (RJ) harvested after 24 to 48 hours of grafting, compared with that traditionally harvested after 72 hours of grafting. As well as to analysis of these compounds in (RJ) within cells to brood of workers, compared with the (RJ) product in cups. 50 samples were analyzed in wet weight and dry weight for (RJ), which was harvested in this research.
The purpose of this research is to design and realization of an electronic apparatus which is able to control the process of irrigation that depending on soil moisture .This apparatus organize the process of irrigation, when the level of soil moistur e under a specific value that it was chosen depending on water field capacity of crop ,it operates the pump which connected with it, and when the moisture level reaches that value the pump stops working. The apparatus consists of two parts: The first part: An electronic circuit using a number of operational amplifiers ,some electronic elements ,and voltmeter to measure voltage between load resistance which is in serial with resistance between two probes that set in soil. The second part: An electrical part ,which provides a secure connection between the previous electronic circuit and water pump. This study was carried out on a simple of black soil .The relation between electrical resistance of soil and volume of water used in irrigation was drawing for three values of distance between probes and power supply. We found an intense declination curves for small values of used water volume.
A field experiment was conducted for two years 2011-2012 to evaluate the effect of various tillage implements, tillage depths and nitrogen fertilizer timing application on soil bulk density, its moisture, and peanut growth. Three different implements were used: moldboard (MP), chisel (CP) and disk ploughs (DP). Tillage depth treatments (split-plots) included (8-10) cm, (18- 20) cm and (28- 30) cm tillage depths; D1, D2 ,D3 respectively. Timing applications (split-split- plots) were: T1 all nitrogen fertilizer applied at planting ,T2 half nitrogen applied at planting and half at flowering ,T3 all nitrogen fertilizer applied at flowering. All tillage implements decreased soil bulk density for the tillage depth. They were for treatments (DP,CP,MP) at (0-10)cm depth (1.31,1.33,1.29) g/cm3, (1.31,1.32,1.31) g/cm3 at (10-20) cm depth and (1.36,1.37,1.35)g/cm3at(20-30) cm depth. Soil moisture increased in treatments (DP,CP) with increasing tillage depth .There was no effect of previous factors on main branches, but timing of nitrogen fertilizers (T1, T2) effected secondary branches significantly compared to T3. Moldboard significantly increased leaf area to (1.77) m2/plant compared to chisel (CP) and disk ploughs (DP). Also D2, D3 increased leaf area compared to D1. (T1, T2) significantly increased leaf area compared to T1. Interaction between timing of application and depth (D3 xT2) gave significant differences. The best value was (1.85) m2/plant for the two years.
This study was carried out in a protected area at Rangeland and Dry Environment Research Station, belongs to ACSAD and Aleppo university in the Muslumieh, Aleppo, during 2004, by cultivating 11 plant species belong to three different families, Fab aceae (3 species), Poaceae (7 species) and Rosaceae (one species), using 4 moisture Levels (5, 10, 15 and 20 mm), and 6 seeding depths (0, 1, 2, 3, 5 and 7 cm). Results showed that the seeds of all the investigated species failed to germinate at the moisture level of 5 mm, while Onobrychis sativa (36.2%), Agropyron elongatum (53.9%), Agropyron cristatum (36.1%), Phalaris tuberose (41.1%), Dactylis glomerata (12.2%) and Sanguisorba minor (1.12%) germinated under 10 mm humidity. The seeds of all investigated species germinated at the higher moisture levels (15 and 20 mm), but the germination ratio varied between the species. The seeds of all studied species were capable of germinating when placed at the soil surface and seeding depth of 3 cm. The seeds of Agropyron elongatum (73.3%), Agropyron cristatum (13.3%), Phalaris tuberosa (36.7%) were capable of germinating at depth of 5 cm. The seeds of all studied species failed to germinate at a the planting depth of 7 cm.
Six durum cultivars were compared in relation to germination percentage, mean germination time, and germination “Catch up” from stress under different soil moisture contents in the labs. Both soil moisture and cultivars have shown effects on the s tudied parameters. Increasing moisture tension had caused a significant reduction in the germination percentage. The cultivars differed in their germination. Haurani 27 and Cham3 showed a higher germination potential and their germination times were shorter than the two varieties Bohouth 5 and Cham1. The varieties Lahn and Senator Capelli were intermediate among the other examined cultivars.
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