Determining Timely Entry and Exit of Livestock in Rangelands Using Bromus tomentellus Phenological Stages (Case Study: Goorab Rangeland of Isfahan)

Document Type: Research and Full Length Article

Authors

1 null

2 Research Institute of Forests and Rangelands

Abstract

In the rangelands of Iran, the lack of appropriate grazing management is one of the major problems ultimately leading to untimely and excessive grazing intensity of forage. Accordingly, most of the rangelands show a retrogression trend and poor conditions. In forage species, phenological stage is one of the most important criteria for range management. Bromus tomentellus species is an important range species for forage production controlling soil erosion. In order todetermine the timely entry and exit of livestock in rangelands based on phenological stages of B. tomentellus, this study was conducted in Goorab rangeland, Fereydoun Shahr, Iran during four years (2007-2010). In this research, ten plant bases of B. tomentellus were selected and their phonological stages were recorded in a 7-day interval period. At the same time, meteorological data were collected from meteorological station adjacent to the study site. According to the occurrence of biological phenomena in the different years of study (wet conditions in 2007, severe droughts in 2008 and normal years in 2009 and 2010) and also based on plant growth stage in the 4 year study, it was concluded that 30th April and 31th May were suggested as the best time for livestock to enter and exit from the rangeland, respectively.

Keywords

Main Subjects


Ehsani, A. and Zandi Esfahan, E., 2015. The role of Halocnemum strobilaceum phenology on grazing management and sustainable utilization of rangeland forage. In Biological Forum conference, 401. Research Trend.

Frank, A., Sedivec, K., Hofmann. L., 1993. Determining grazing readiness for native and tame pastures. North Dakota State Univ. Ext. Serv. Jour. Bull.

Hur, J., Ahn, JB., Shim, KM., 2014. The change of cherry first-flowering date over South Korea projected from downscaled IPCC AR5 simulation. Int. J. Climatol.34: 2308–2319.

Arzani, H., 2009. Forage quality and daily requirement of grazing animal. University of Tehran press 354p (In Persian).

Jafari, A., Anvari, A., Nakhjavan, H., Rahmani, E., 2010. Effects of phenological stages on yield and quality traits in 22 populations of tall wheatgrass Agropyron elongatum grown in Lorestan, Iran. Journal of Rangeland Science, 1(1): 9-15.

Keneshloo, H. and Ameri, H., 2012. Phenology study of Atriplex griffithii for optimal management of grazing in rangeland of Aftar, Semnan County. Jour. range and desert research, 19 (2): 344 - 354. (In Persian).

Khademi, K., Sepahvand Siyah Mansoor, A.R., Ansari, V., 2002. Phonological assessment of some important grassland species at Zaghe station of Lorestan. Grassland and desert researches. Journal of Rangeland and Desert Researches of Iran. Volume 7, Number 1, pp. 26 7(1): 26p (In Persian).

Kolahi, M. and Atri, M., 2014. The Effect of Ecological Factors on Vegetation in Hamedan Alvand Region (Iran). International Journal of Farming and Allied Sciences, 3: 489-496.

Moghimi, J., 2005. Introduction of some important rangeland species for the development and improvement of Iranian rangelands, Aroon Publication, 670 pages (In Persian).

Saeedfar,M., and. Rasti, M. 2000. Phenological study of rangeland plants in the area of Henna Semirom Iranian. Research institute forest and rangeland publication, No 231, pp. 112 Tehran, Iran b (In Persian).

Shim, D., Lee, K. J., Lee, B. W., 2017. Response of phenology and yield related traits of maize to elevated temperature in a temperate region. The Crop Journal 5(4): 305-316.

Zhu, W., Jiang, N., Chen, G., Zhang, D., Zheng, Z., Fan, D., 2017. Divergent shifts and responses of plant autumn phenology to climate change on the Qinghai Tibetan Plateau. Agricultural and Forest Meteorology, 239, 166-179.