Keywords : irrigation System


Effect of water irrigation quality and mulching on the moisture and salt distribution and cauliflower yield Brassica oleracea under drip irrigation system

Saady S. Al-Zobae; Abdulla H. Al-Sheikhly

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2010, Volume 8, Issue 2, Pages 39-55

A field experiment was conducted in Al-Raid Experimental station, Ministry of Resources, 20 km west of Baghdad, during autumn season 2008, in silt clay loam soil classified at typic torriflvent, to study the effect of water irrigation quality, soil mulching on the moisture and salt distribution and cauliflower yield under drip irrigation system. The Experimental design was Factorial Experiment with RCBD in three replicates. The study includes two factors: 1- Water quality, which includes three factors: a- Irrigation with river water (WR) ( 1.1 ds. m-1). b- Irrigation with saline water (WS) ( 4.5 ds. m-1). c- Alternate irrigation (WA).2- Soil mulching includes two factors: a- Soil mulching with black polyethylene (M). b- With out mulching (W). The results can be summarized as follows: It was notice that the moisture content increase at the emitter sources and decreased away from the source vertically and horizontally for all treatment at the end of the irrigation, the wetting front increase away from the emitter source with increased the depth of the soil. Also the wetting front movement increase vertically and horizontally when the soil covered with black polyethylene, also the leaching requirement caused increase the moisture content for irrigation treatment with saline water. Saline soil increase vertically and horizontally away from the emitter source, and moved with wetting front away from the emitter source when the irrigation depth increased. The higher salt accumulation was found at wetting front vertically and horizontally, and the salt was distributed increasingly with the depth in soil mulching treatment, also it was found that the salinity of salt water treatment was greater than the alternate and river water treatments respectively. Irrigation treatments and mulching were effect on the yield, The higher yield was 42.95 ton / hector when irrigated with river water and mulching compare with low yield 22.03 ton/ hector when irrigated with saline water and with out mulching.

Effect of different tillage systems in gypsiferous soil on yield of wheat under center pivot sprinkler irrigation system

I. K. Al-Hadithi; Y. K. Hamza; G. H. Al-Niemi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2008, Volume 6, Issue 1, Pages 1-7

Three experiment was conducted in Al- Anbar governorate during winter season 2001 to study the effect of three types plows to cultivate the soils (gypsiferous soils) and its effect on yield of wheat under center pivot sprinkler irrigation system.
It have been reached that, Exclusion of using the the moldboard plow in gypsiferous soils, it can be reliable on using of disc harrow under sprinkler irrigation system , and also using of rotary plow type under local conditions of these soils.

Evaluation of Center Pivot Sprinkler irrigation System (Lindsay type)

Isam K. Al-Hadithi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2006, Volume 4, Issue 2, Pages 1-5

The experiment was conducted in Al-anbar governorate-Al-saqlawla during (Autuman season 2002), to evaluate Center pivot sprinkler irrigation system (Lindsay type).
The system speed was calibrated with water depth achieved from that speed. The relationship between speed percentage for system, and the irrigation uniformity, also the operation pressure and irrigation uniformity has been studied. The operation of the system under pressure nearly 30 psi gave high irrigation uniformity cofficient reached 89%.

Integrated nutrition for wheat in Gypsiferous soils under center pivot sprinkler irrigation system

I.A. Assaffii; I. K. Al-Hadithi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2005, Volume 3, Issue 2, Pages 1-9

Field experiment was conducted in gypsiferous desert soil in western desert of Iraq/ to the west of Baghdad 260km. at the season 2003-2004 to study the response of wheat (Ebba-99 ) to integrated nutrition and the method of nutrient application under center pivot sprinkler irrigation system. Experiment consisted of seven treatments which were : Control, chemical fertilization treatment according to the recommendation of ministry of agriculture 160 kg./hec.DAP +300Kg./hec.( 33.6kg P/hec., 160 kg N/hec.)Urea.Ferrous and Zinc sulfate were used at rate 4 kg./hec. With water plus to the fertilizer recommendation Also DAP was used with water or soil besides fertilizer recommendation at the same levels. Treatments were distributed according to completely randomized design with three replicates for experimental units with area300 m2 .Measurements were carried out after 50,100 days and at harvesting which consisted of morphological properties like number branches, plant height, leaf area, dry weight , number of spikes , number of grains in spike , weight of 1000 grain , biological yield, grain yield and harvesting index. Same physiological and qualitative properties were estimated that are chlorophyll a,b and total , carbohydrate, protein, total nitrogen ,available phosphorus in soil and plant. Also water use efficiency was calculated.
Results showed that Fe+ Z n+ DAP with water achieved significant increasing in yield which was 3250 kg./hec with increasing percentage 15.6% as compared with recommended fertilization.The followed treatment was (Fe+Zn+DAP with soil) with significant increasing percentage 12.45%.The highest percentage of carbohydrate and protein in grains were corresponded by treatment (Fe+Zn+DAP with water and soil) and ranged between 112.5-106.6 gm./ plant for carbohydrate and between 17.5-19.3% for protein . All treatments conserved good level cover the requirement of plant from nitrogen in soil to age 100 days without control treatment. But for phosphorous the decreasing appeared under minimum limits which cover plant requirement after 50 days. That is mentioned the importance of phosphorous application with water at stages after 50 days. It will be concluded the importance of fertilization with more than recommended rates by ministry of agriculture under gypsiferous soils conditions and adding the elements with water after age 50 days.