Response of Bread wheat to potassium nutrition: some growth, productivity and efficiency parameters

A pot experiment was conducted in a green house at Tishreen University in which bread wheat (cv. Sham 6) was grown at different levels of potassium nutrition (K0=0, K1=25, K2=50, K3=75, K4=100, K5=150) mg k/kg soil. The increase in potassium fertilization rates led to a significant increase in the number of total tillers and fertile tillers on the expense of non-fertile tillers. This was accompanied with no significant increase in number of main stems spikes grains, while the tillers spikes of the first level of potassium application (K1) was higher significantly compared to control treatment (K0). The same treatment (K1) gave the best weight of grain on the main stems spikes and tillers. The productivity of grain yield increased (but non-significantly) with increasing the level of potassium fertilization. The highest yield value was obtained in K5 treatment which was 13933 kg /ha. This productivity constitutes a rate of increase 18% compared to the control treatment (K0). The calculation of Agronomic Efficiency (AE) showed a high value of (about 13 kg seeds/kg of K fertilizer added) in the K1 treatment, and thereafter, AE gradually decreased with potassium fertilization to reach about 6 kg grain/kg K fertilizer for K4 and K5 treatments (100 and 150 mg K/kg).

Evaluation the Performance of Promising Settlement Population (SBR) of Wheat (Triticum aestivum L.) at Ain Malilah Sebkha in Algeria

A population of soft wheat which lives naturally on the edges of saline Ain Malilah’s Sebkha, located to the southeast of Qasantina from the east of Algeria, and four varieties i.e. HD1220, ARZ, AS and ANF, to evaluate their performance under several abiotic stresses conditions, and to study their response to fertilization, based on some phenological, morphological, chemical characteristics such as: Life cycle (from cultivation until the appearance of 1/4 spikes), germination potentiality, tellering, leaf area, total chlorophyll content, relative water content, carbohydrates content.

تاثير ماء الجفت في بعض الخواص الفيزيائية والكيميائية والحيوية للترب الطينية القلابة VERTISOLS

يعود ظهور شجرة الزيتون إلى ماض سحيق ( ستة آلاف سنة ) وقد ارتبط نشؤوها بتاريخ بلدان البحر الأبيض المتوسط حيث لعبت منذ الأزمان الأولى دوراً هاماً في اقتصاد شعوب البحر الأبيض المتوسط

Area Estimation of Wheat, Barley and Chickpeas Crops in Sweida Governorate Using Remote Sensing (RS) Technique

Remote sensing is one of most important technology that provides information on large areas in a short time. The study was carried out in Sweida governorate with the aim of calculating the area of strategic crops and its distribution for the agricultural season 2014/2015 by classifying satellite images-type (BKA). The images were received by the station at General Organization for Remote Sensing in Damascus, Syria. The spatial resolution of the satellite BELARUSIAN SPACECRAFT is 10.2 meters. The results showed that the spread of the three crops (wheat, barley and chickpea) was generally on the four sides of the governorate, especially barley crop. Chickpeas and wheat concentrated in the west and center but in scattered areas. The area of wheat crop according to image classification was 30494 ha which accounted 8.97% of the studied area (Sweida governorate without Badia). The degree of approach to the proportion of the Ministry of Agriculture was 95.19%. The area of barley crop resulting from the classification process was 16705 ha, which accounted 4.92% of the study area. While the area of barley according to the statistics of Ministry of Agriculture was about 15933 ha. The area of chickpea crop resulting from the classification process was 26063 ha which represented 7.67% of the studied area. The results showed that the accuracy of the total classification was 82.4%, which allows satellite image to be used in calculating the area of strategic crops and determine its locations and distribution.

Economic Possibilities to Achieve Self-sufficiency of Wheat in Syria

The research aimed to identify the current status of wheat in Syria during the period (2000- 2012), and to study the energy of production and consumption, gap size, besides self-sufficiency ratio of wheat, as well as to highlight on the average per capita of the available for consumption, the annual average income per capita, and the annual population increase. The research also indicated the most important factors affecting the production and domestic consumption of wheat. The results had showed that the general trend of total production, cultivated area and productivity is a descending direction during the studied period. Also, the consumed amount of wheat during the studied period increased, with an average of (4084.42) thousand tons annually, while the average of domestic production amounted to about (4008.38) thousand tons for the same period. Besides the food gap of wheat ranged between a minimum value at (17.3) thousand tons in 2000, and a maximum value about 1660 thousand tons in 2009, the year in which consumption reached its maximum value in the time of studied series. The self-sufficiency ranged from (69.04%) in 2009 and (131.03)% in 2007 with an average of about (99.1)% during the period (2000 - 2012).

Effect of adding(Thymus vulgaris L.) leaves powderhe to the soil in some formal , physiology, and productivity chuructrers of two Durum and Aestivum wheats cultivars

This research was carried out in a field during the (2016) season in Beit AL Raheb village . The agriculture was in (protected and field under normal conditions) . two wheat variets were used : Cham1 and Cham4.

The Role of Slow Rust in Limit Wheat Leaf Rust Damage in Syria

The aim of this study is to determine the percentage of loss in yield of some durum wheat varieties against wheat leaf rust, and to identify whether the slow rusting has a positive effect in limiting yield loss. The study was carried out in the fields of experiments at Faculty of Agriculture, Aleppo University, Aleppo, Syria, 2015, included six durum wheat varieties (Cham1, Cham5, Douma1, Cham9, Beltagy and Massine).

Using of Photosynthetic electron transport as an indicator of photosynthesis efficiency

Photosynthetic transport was studied as an indicator of photosynthesis efficiency in two bread wheat cultivars (ACSAD 899, ACSAD 1059) under the influence of one of the salt stress. This study was carried out in sand cultures irrigated with nutrient solution in a growth chamber, and 14 days seedlings were treated with 100 mM of sodium chloride. Later the electron transport rates in those plants thylakoids were measured in 21, 28, 35 days of the experiment. Electron transport rates decreased in ACSAD 899 and reached 57% in the last day of the experiment, while it was 24.6% in ACSAD 1059. The decrease in photosynthetic electron transport rate leads to a decrease in the reduction rate of CO2 and the plant productivity as a consequence. Therefore, it could be used as criterion to express photosynthesis.

Effect of Seed Rate, Spray with Sorghum Water Extracts and Weeding on Wheat Yield (Triticum durum L.)

This research was conducted at Tal Shnan village, located at the eastern of Homs city, Syria during 2012/ 2013 growing season, using hard local wheat cultivar, Sham 5, to study the effect of seed rates (120, 150, 180, 210 kg/ha), spray with different parts of sorghum water extracts using different, and weeding on wheat yield and weeds accompany with the crop.

Effect of adding the sifting Avocado seed meals to wheat flour on produced dough and bread qualities

Adding the sifting meals of the Avocado seed to wheat flour mixtures caused increasing in folowing percentages of components: (moisture , fibers , ash , starch and total soluble sugars ) Also the (5,10%) percentages adding caused a slight reducing in gluten quality , while a reducing in gluten quality was clearly at (15 , 20%) percentages. Also the adding of tested meals caused improvement in baking quality (loaf weight during baking and during cooling) , also improvement the sensory properties of produced bread significantly , except (20%) percentage comparing with control sample. Finally , 15 and 20 percentages , only of Avocado seed meals adding caused reducing in taste property of produced bread.