Effect of addition of humic acid and Leaching Factor under irrigation with different levels of saline water on Clay Soils content of Organic Matter and yield of wheat crop .

An experiment was carried out under the conditions of the green house at the Faculty of Agriculture, University of Aleppo. The aim of research is determine the effect of the addition of humic acid to the irrigated soils by saline water in their organic carbon content and the yield of the wheat crop. The experiment was designed in a split-spilt dissection method. The main sections comprising three levels of irrigation water salinity (W1:0, W2:3, W3:6 g-1 NaCl). Three levels of gypsum were mixed with soil: (G1:0, G2:25, G3:50 g). Three levels of humic acid were added with irrigation water (H3:48, H2:24, H1:0 kg/h). The coefficient Leaching with irrigation water for W3 and W2 was applied at %10 and %20 of the field capacity, respectively. The results showed that the addition of humic acid contributed to the increase in the stock of organic carbon. The highest percentage of organic matter (2.70%) was found in the deep layer (W3G3H3), while the lowest ratio was (1.41%) in the surface layer of treatment (W3G2H1). The role of humic acid, especially at the level of H3, was clearly demonstrated in increasing the productivity and weight of the 1000 grains for the wheat crop. The study confirmed the role of the leaching factor in the organic carbon losses of the soil, where organic carbon was losses (%26.31) with leaching factor 10%, where the losses (%44.74) with leaching factor was 20%.

The Effect of Adding Organic Residues, and Foliar Spray with Boron and Zinc on Some Soil Characters, Fruitlets Ratio, and Some Fruit Qualitative Traits in Starking delicious Apple Cultivar in Sweida

The study was carried out in apple orchard and at the laboratories of Agricultural Scientific Research Center, and Pome and Grapevine Division in Sweida (GCSAR), Syria, during the growing seasons of 2015 and 2016 to study the effect of organic residues, and boron and zinc addition on some soil characters, fruit set ratio and some fruits qualitative traits in Starking delicious apple cultivar in Sweida.

The effect of potassium and organic manure on some of the qualitative properties of Starking delicious apple cultivar and some soil characters

This study was carried out at the Agricultural Scientific Research center In Sweida - GCSAR to study the effect of potassium sulfate and organic manure on some of soil characteristic in addition to tree growth vigor and fruit traits of Starking delicious apple cultivar. The results revealed significant effect in reducing the (pH) of the soil in the three treatments; potassium sulfate fertilization, organic manure fertilization and application of potassium sulfate and organic manure together which were (6.608), (6.708) and (6.558), respectively, in the comparison with the control (6.768). In addition, significant differences were shown in the (EC) between the former treatments (0.1532 ds / m), (0.1692 ds / m) and (0.0937 ds / m) compared to the control (0.2217 ds / m). Concerning growth vigor and fuit traits, the results showed a significant increase in the average of shoot length in the previous treatments (66.43, 77.33 and 71.37 cm, respectively), compared to the control (59.37 cm), while showed a significant increase in leaf area in organic manure treatment and potassium sulfate with organic manure together (35.54 and 37.21 cm 2, respectively), compared to the control (30.54 cm 2). The results of analysis of variance in fruit firmness showed higher significant variation of potassium treatment (8.477 kg / cm 2) than the other treatments which, also revealed significant increase of total soluble solids (16.82%,15.2% and15.37%,respectively) compared to the control (14.23%), and a significant increase in total sugars and in percentage of treatable acidity. Consequently, the result showed that the addition of soil fertilizers treatment contributed to improve some of soil characters, tree growth vigor and some of the quantitative and qualitative traits of apple fruits.

Studying the possibility of Using a Digital Camera in Estimating Soil Color and its Relationship with some of the Soil Properties

This research aimed to study the possibility of using a digital camera in estimating soil color and compare it with Munsell soil color chart, and then study the correlation between soil color as important classification properties and soil content of organic matter, soil content of total carbonate and soil Texture.

The Effect of Fertilization Systems and Tillage Depths on Soil Content of Organic Matter and Some Mineral Nutrients

The reasearch was carried out during 2009 – 2010 in Al – Hasaka – Amoda - to study the effect of cattle manure at the rat of 30 ton / ha , and four organic green manure ( Lentil, Vetch, Faba bean and Barely) on soil content of organic matter and some mineral elements compared with chemical fertilizer 400 kg / ha urea , 83 kg / ha P2O5 and 25 kg / ha K2O . The manure significantly increased organic matter , phosphorus and potassium concentrations compared with other fertilizers ( chemical and green fertilizers ) . All green fertilizers ( Lentil , Vetch , Faba bean and Barely ) significantly increased organic matter , nitrogen and potassium concentration compared with the control without using any fertilizer , the tillage depth ( 0 – 10 ) cm significantly increased soil content of organic matter and nitrogen compared with deeper tillage ( 25 – 30 ) cm during the two seasons .