Print ISSN: 2077-5822

Online ISSN: 2618-1479

Main Subjects : Environment


Improvement of Interpolation Using Information From Rainfall Stations and Comparison of Hydroclimate Changes (1913-1938)/(1986-2016)

Hakim Bachir; Souheila Kezouh; M‘hamed Ait-oubelli; Ahcène Semar; Dalila Smadhi; Karim Ouamer-ali

Al-Qadisiyah Journal For Agriculture Sciences, 2021, Volume 11, Issue 1, Pages 54-67
DOI: 10.33794/qjas.2021.129350.1002

The primary objective of this study is to use a better method for rainfall mapping in areas with low density rain gauge networks. Secondly, to identify and study hydro-climatic change in the semi-arid high plains of eastern Algeria on the basis of a comparative mapping approach. The latter concerns the annual rainfall map produced by the authors of this paper for the period studied (1986/2016) and the annual rainfall map for the period 1913/1938, prepared by Chaumont and Paquin (1971). The results of this analysis show that isohyets between 300 mm and 350 mm cover a large part of the study area, they occupy an area of 14444 Km², followed by isohyets between 200 mm and 300 mm with an area of 5298 Km². In addition, the comparative analysis between the periods showed that hydro-climatic change was clear for the 200 mm, 300 mm and 400 mm isohyets, whereas there are no major changes for the 500 mm and above isohyets. Data processing based on a combination of statistical and geostatistical analysis (multiple linear regression and kriging) has once again shown the value of taking into account other parameters in the design of rainfall maps, such as geomorphological and geographical parameters.

Study of Sediments Accumulated of Tigris River in Al-Kut Barrage and Their Effect on Engineering Criteria of River Sections

Afnan Nema Mnaty; Jamal Naser Abedalrahman

Al-Qadisiyah Journal For Agriculture Sciences, 2021, Volume 11, Issue 1, Pages 1-9
DOI: 10.33794/qjas.2021.168284

The study was conducted on the Tigris River, in front of the Al-Kut Barrage. The study period continued (11 months), where six vertical sections were chosen upstream of Kut Barrage, the distance between one section to another was 100 m. The first section begins at 350 m from the front of Barrage. The result showed that variation in the discharge of Tigris River in  upstream of Kut Barrage during the months of the study period, and it is noticed that the values of the discharge of the studied sections ranged from 117.35 m3/sec  to 542.71 m3/sec, and the lowest average value of  discharge was 217.84 m3/sec on August 2018, and the high average value of discharge was 411.19 m3/sec on February 2019. The values of velocity of the current water of the studied sections ranged from 0.121 m/sec to 0.567 m/sec, and the lowest value of velocity was 0.225 m/sec on August 2018, and the high average value of velocity was 0.402 m/sec on April 2019. The flow area of Tigris River ranged from 295.6 m2 to 2080. 8 m2 during the period of study. The depth of water levels of Tigris River ranged from 1.36m to 4.68 m, the area of accumulated sediments upstream of Al-Kut Barrage ranged from 1069.2m2 to 2854. 4 m2 during the period of study. The volume of the accumulated sediments upstream Al-Kut Barrage ranged from 139000m3 to 257740m3.

Study of Water Quality of Tigris River Upstream Al-Kut Barrage

Jamal Naser Abedalrahman; Afnan Nema Mnaty

Al-Qadisiyah Journal For Agriculture Sciences, 2021, Volume 11, Issue 1, Pages 10-13
DOI: 10.33794/qjas.2021.168285

The study was conducted on the water quality of Tigris River in upstream of AL-Kut Barrage during the period of August 2018 to June 2019. Six vertical sections have been selected upstream of Al-Kut Barrage. The distance between one section to another was 100 m, the first section begins at 350 m from the origin of Barrage. The result showed that the values of cadmium ion were 0.0346 ug/L to 0.0707 ug/L. The Lead values of the Tigris River water samples were 4.29 ug /L to 8.33 ug /L. The values of nickel ion have been ranged between 7.59 ug/L to 9.75 ug/L. Zinc ions have been recorded 53.5 ug /L to 72.1 ug /L. The concentration of above ions was situated within Iraqi and world Health organization (WHO) criterions that relating with propriety of water of Tigris River for drinking and irrigation.

The Effect of Awassi Ewes Body Condition Scores on Milk Production, Composition and Lambs Growth

wissam jasim mohammed Ali

Al-Qadisiyah Journal For Agriculture Sciences, 2021, Volume 11, Issue 1, Pages 68-71
DOI: 10.33794/qjas.2021.168289

This study was performed to evaluate the efficacy of body condition scores (BCS) and Sex of lamb on Awassi ewes milk production, composition and lambs growth. The experiment conducted at one of the Awassi sheep breeders in Baibokht area (8km north of Mosul city ) for three months. Ewes were fed concentrate  500g/ewe/day, 60% barley, 38%  wheat bran, 1% salt and 1% limestone, with grazing. ewes were divided in to three groups. First group body condition score (BCS 2), the second group (BCS 3) and the third group (BCS 4). The results revealed BCS3 had a significant effect (P<0.05) on weekly milk yield, total milk yield, fat percentage and lambs weight at different ages and no significant effects of BCS on milk Lactose, Protein, total solid and solid non-fat percentage. Sex of lamb had a significant effect (P<0.05) on weekly milk yield and total  milk yield and lambs weight from birth until weaning. And no significant effects on milk composition. In general this means that BCS  led to significant improvement in the studied traits for behalf highly BCS compared to low. Male lambs had a significant effect on ewes milk yield and lambs weight.