النشر العلمي

  • حلايب ازمة العلاقات السودانية المصرية

published in مجلة كلية الاداب جامعة امدرمان الاسلامية

  • العلاقات السودانية المصرية بين الوحدة والتكامل

published in مجلة الجزيرة للعلوم التربوية والانسانية_المجلد 9 العدد 2

  • Soil bulk density and some related soil physical properties in relation to soil moisture content under New Hamdab conditions, northern Sudan

Soil bulk density and some related soil physical properties in relation to soil moisture content under New Hamdab conditions, northern Sudan

 

Abbas Mohammed Ali Mustafaand Hisham Mousa Mohammed Ahmed 2

1 Agricultural Research Corporation, New Hamdab Research Station, Northern State, Sudan.

2 University of Gezira, Faculty of Agricultural Sciences, Wad Medani, Sudan.

                              

ABSTRACT

        This study was carried out during 2009/10, in New Hamdab Research Station Farm, Northern State, Sudan. Soil bulk density was determined with its corresponding soil moisture contents for depths 0-20 cm, 20-40 cm, 40-60 cm, 60-80 cm and 80-100 cm from a soil profile of 120 cm deep using the core method. Correlation between soil bulk density versus each of soil depths (D) and soil moisture contents were made, nevertheless, the bulk density related soil physical properties values in relation to moisture content were also estimated. The results indicated that soil bulk density had a significant linear positive relationship (P ≤ 0.001) with soil depth (r²=0.89), and negatively related to soil moisture content for all the tested depths(r²= 0.99, 0.98, 0.97, 0.58 and 0.98). The values of all related soil physical properties to soil bulk density increased with increasing gravimetric soil moisture content for all depths except for the air filled porosity which decreased. A calculated amount of irrigation water of 1693 m³/ha is needed to irrigate an air dry soil that contains about 5% moisture.

published in مجلة جامعة الجزيرة للعلوم الزراعية

  • Determination of crop coefficients for wheat and faba beans and water productivity in New Hamdab, Northern State, Sudan

Determination of crop coefficients for wheat and faba beans and water productivity in New Hamdab, Northern State, Sudan

 

Hisham M.Mohammed I, Adeeb A.Mohamed2 and Habiballa A.Mohamed I

1National Institute of Desert Studies (NIDS), University of Gezira, Wad   Medani, Sudan

2Water  Management and Irrigation Institute, University of Gezira, Wad   Medani, Sudan

 

ABSTRACT

    This study was conducted at the farms of National Institute of Desert Studies (NIDS) and center pivot systems in New Hamdab Scheme, Northern State, from season 2007/08 to 2009/10. The objectives of this study were to estimate the crop coefficients (Kc) of the wheat (Wadi Elneel variety) and faba bean (Selaim variety) and water productivity. Reference evapotranspiration (ETo) was calculated using the FAO computer program (CROPWAT). Actual crop evapotranspiration (ETc) was estimated by the gravimetric method. Crop coefficients were derived from the relation between Reference evapotranspiration and actual crop evapotranspiration.  The results showed that crop coefficients values for wheat and faba bean were 0.51 and 0.47 for initial stages, 1.26, and 1.15 for the mid stages and then decreased gradually to 0.53 and 0.42 for the late stages respectively. The peak Kc occurred during the period 60 to 70 DAS, coinciding with the maximum ETc of 5.70 and 4.93 mm/day at the mid-season stage for wheat and faba bean, respectively. The crop consumptive water use of wheat and faba bean was 448 mm and 380 mm for the total growing period, respectively. The mean yield of wheat and faba bean, was 854 and 902 kg/fed.

 

published in مجلة جامعة الجزيرة للعلوم الزراعية

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