Optimum Seed Rate for Vigna sun-hum (Tagtaga) for Rangeland Rehabilitation in Sandy Soil of North Kordofan

Journal of Rangeland Science

مقاله 6، دوره 9، شماره 2، تیر 2019، صفحه 151-158   

نوع مقاله: Research and Full Length Article

نویسندگان

Ahmed M. M. Lazim¹؛ Elnazir M. Daw-elbait²؛ Sahar Ezzat^{* 3}؛ Salih. A. Elsheikh⁴

¹Elobeid Research Station, Agricultural Research Corporation, Sudan

²Elfashir Research Station, Agricultural Research Corporation, Sudan

³College of Forestry and Range Sciences, Sudan University of Science and Technology, Soba, Khartoum

⁴Elobeid Research Station, Agricultural Research Corporation, Sudan.

چکیده

In order to determine the optimum rate of Vigna sun-hum seed sowing for rangeland rehabilitation in sandy soil of North Kordofan, Sudan, two trials were conducted separately under managed and unmanaged conditions at El-obeid Agricultural Research Farm in Sheikan locality of North Kordofan State in 2015 and 2016. Seed rates were 1, 2, 3, 4 and 5 Kg/feddan (4200m) and arranged by a Completely Randomized Block Design with three replications. The species in both trials was established under rain-fed conditions by broadcasting seeds on prepared seed beds early in the rainy season. In the managed trial, seeds were broadcasted on a clean seed bed. The first and second weeding was carried out after two and four weeks from seed broadcasting. In the un-managed trial, a bare area or an area with scatter occurrence and low density of herbaceous species was selected annually and weeding was not done. Vegetation cover, density and forage dry weights were obtained using (50x50 cm²) quadrate. MSTAT-C statistical software package was used for the statistical analysis. In both managed and un- managed trials, the results revealed that there were significant (P≤0.001) differences in most measured variables. In the managed trial of 2015 cropping season, the seed rate of 3 kg/feddan recorded the highest vegetation cover (33.3%) and the highest dry weight (260.3 g/m²) whereas the one kg/feddan had the least vegetation cover (10%) and dry weight (52.1 g/m²). In un-managed trial of 2016 cropping season, the seed rate of 4 kg/feddan recorded the highest density (98 plant/m²) and the highest dry weight (100.3 g/m²) whereas the third seed rate recorded the least density (37 plant/m²) and dry weight (33.6 g/m²). Results of combined analysis indicated that there were significant (P<0.001) differences among the five seed rates in most studied parameters. For Vigna sun-hum as endangered leguminous range species, two optimum seed rates of 3 and 4 kg/feddan were recommended for ranches and natural rangeland rehabilitation in the managed and un-managed areas, respectively.

کلیدواژه‌ها

Seed rate؛ Density؛ Vegetation cover؛ biomass؛ Rangeland

مراجع

AbdElhag.S.E. and Babo, F., 2012. Effects of reseeding of some range plant species on the biomass production of rangelands in Sheikan Locality - North Kordofan State. JAVS 13 (1): 78-79.

AbdElhag.S.E., 2018. Approximate analysis of plant species at flowering stage in Korth kordofan (unpublished data). College of forestry and range Science, Sudan University of science and technology. Khartoum, Sudan.

Bonger, G., 2009. Management for proper range use in Ethiopia. Ethiopia Sheep and Goat Productivity Improvement Program (ESGPIP). Technical bulletin No.25. Ethiopia.

Dawelbait, E. M., Lazim. A. M. and Breima. E., 2013. Improving Range productivity through enclosures and reseeding of the three endangered range species in North Kordofan, Sudan.The paper was presented in 53th national husbandry committee at Agricultural Research Corporation (ARC) conference hall, Wadmedani, Sudan.

Freed, R.D., 1992. MSTAT-C. Software Program (Ver. 2.0). Crop and Soil Sciences Department, Michigan State University, East Lansing USA.

Gaiballa. A. K., 2011. Rangelands Management-Concept and practices. Sudan University of science and technology. Khartoum, Sudan: 30.

ICARDA, 1988. International Centre for Agricultural Research in Dry Areas. Proceedings of a workshop on "The role of legumes in the farming systems of the Mediterranean areas". UNDP/ICARDA. Tunis, June 20-24, 1988.

Khatir, A.A., and Dawelbait, E. M., 2013. Changes in ground cover and identification of endangered range plant species in North Kordofan State, Sudan J. Des.5 (1): 101-112.

Lazim, A.M, Babo, M.F and Elsheikh. S.E., 2012. A note on impact of management practices on herbaceous forage productivity and carrying capacity in the Rangelands of South Kordofan, Sudan. Sudan J. Des. 4(1): 140.

Lazim, A.M., 2009. Response of natural range vegetation to four management practices at Tillow area (South Kordofan State). Ph.D. Thesis, Sudan Academy of Sciences (SAS), Khartoum, Sudan.

MAAW, 2011. Ministry of Agriculture and Animal Wealth of North Kordofan. Animal Wealth Directorate. Workshop for analyzing the results of livestock census in 2010.

Mustafa, H, and Elgoni. O., 2000. Manual for range management and improvement, dry land husbandry project publication, Khrtoum, Sudan.

Steel, R.G.D, Torrie JH., 1980. Analysis of covariance, in: principles and procedures of statistics: a Biometrical approach. Mc Graw-Hill, New York.: 401-437.