Keywords : consumptive use

Role of irrigation scheduling and irrigation interval on consumptive use and growth of cowpea at middle of Iraq

Saifulldeen Abdul Razaq Salim; Isam Kudhaier Hamzah; laith Farhan Gar

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2016, Volume 14, Issue 2, Pages 15-25

A field experiments was conducted during spring season 2015 at the Agricultural field of Veterinary College - Baghdad University. In order to study the effect of irrigation interval in water requirements growth and yield of cowpea by using irrigation scheduling based on applied irrigation water (IW) and accumulative pan evaporation (CPE) which represented empirical pan factor (Ef). Six-irrigation treatment ware chosen (Ef 0.6, Ef 0.8, Ef 1.0, Ef 1.2, Ef 1.4, and Ef 1.6). The results showed that the irrigation interval was variable values and is decreased by increasing Ef value and with the progress of growing season. The 1.2 IW:CPE and 1.0 IW:CPE treatments with approximately 3-4days irrigation interval was achieved the best in subsequent results. The results showed that the total amount of water applied of Cowpea grown during spring season was 254.82mm, as a mean based on IW:CPE ratio. The data showed that there were significant differences in vegetative growth of cowpea crop such as plant height, number of branches per plant, biological yield. Pod length, pod circumference, fresh pods yield weight of loosed and number of seed/pod. The results of the effect of irrigating treatments on cowpea seed yield and its components showed that treatment Ef 1.2 was superior in fresh seed yield by, 5.13 6.88 and 7.33 ton hec-1.

Effect of distance among exhalants on some physical properties, the water consumptive use and yield of Cauliflower

A. I. Al-abaied

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2015, Volume 13, Issue 2, Pages 21-34

A field study was conducted in the Al-Jazeera region- Al-Khalidiah -Alanbar governorate, on the line along, 43.31.3 ̊ east and latitude 33.25.16 north during 2013 autumn season, in clay loam soil texture, a med at Determining the optimum distance between exhalants 0.40, 0.80 and 1.20 m and its effect on some soil physical properties , water consumptive use and and yield of cauliflower Brassica oleracea var. botrytis the experiment design was randomized complete block with treatments with three replications, and the result showed that:
Reducing the distance between the exhalants was led in homogeny of soil moisture distribution which reflected positively on yield but there were not significant increases between the treatments of 0.40 and 0.80m also the kc value for four growth stages was 0.80, 0.81, 0.83 and 0.75 and the total yield was 39.33 and 38 tonne.ha-1 respect to the distance 0.40 and 0.80 without significant differences , where there was a significant difference with value the distance 1.20m was 24.7 tonne.ha-1, also increased the dry mass has been significantly increased, which gave59.3 gm.plant-1 in comparison with 57.0 and 45.2gm.plant-1 , at the other two distances 0.80 and 1.20 m respectively, The 0.40m distance treatment was superior comparing with other as well as the same thing happened for water use efficiency which gave 40.7 and 39.29 kg.m-3 at 0.40 and 0.80 m distances respectively without significant differences in comparing with 1.20 m distance which gave 25.5 kg.m-3 also the use of Exudation irrigation led to decrease water consumption for the crop which gave 172mm comparing with 289.35 as average for preceding researches.

Water Requirements of Date palm Offshoots of Two Tissue-cultured cultivars (Mejhol and Khalas) Planted under climate conditions at mid Iraq 1- Determination of reference and actual consumptive use of date palm off shoots tissue-cultured

Jamal Naser Abdulrahman; Esam Kudaier Hamza; Aman Ibrahim Abdul Hassan

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2015, Volume 13, Issue 1, Pages 1-14
DOI: 10.32649/ajas.2015.119945

This study was conducted at Al- Kut date Palms station located between longitudes 44o 32 ' and 46o 36 ' East and latitudes 31o 57 ' 32o 31 ' North "during 2014-2013 in loamy soils, to study the water requirements. for date palm offshoot variety (Majhol and Khalas) Palm propagated by tissue culture. The drip irrigation system was used under the climatic conditions of central Iraq, the study of the effect of the ratio of moisture depletion from available water and leaching requirements ratio L.R., and Palm varietyon actual water consumption ETa for palm propagation by tissue culture, and planted under the climatic conditions of the Wasit Governorate, and also study the impact of the aforementioned study factors on the distribution of moisture and salts in study site soil, as well as calculate reference water consumption ETo, by using five empirical equations (evaporation basin, Blaney–criddle, Najib kharufah, Jensen–Hess, amended Penman-Monteith), Depending on the climatic data of meteorological station in Kut.
The results showed that the values of the reference water consumption of ETo for palm offshoots calculated by five experimental equations (evaporation basin Epan, Najib kharufah equation, Blaney–criddle equation, Jensen–Hess equation, Penman-Monteith equation FAO), during 13 months were 2898.7, 3162.3, 2536.1, 3124.5, 3020.5 مم, respectively. The results also showed the reference water consumption annual ETo for cultivated offshoots ranged from 2213.5 مم/year that calculated with equation Blaney – criddle to 2806.5 مم/year calculated with Jensen – Hess equation. The actual annual water consumption ETa for palm offshoots, ranged from 858.3 مم/year of treatments D2LR1V1, D2LR1V2, and 1019.9 مم/year of treatments D1LR2V1 and D1LR2V2.