American-Eurasian Journal of Agronomy 5 (3): 40-43, 2012 ISSN 1995-896X © IDOSI Publications, 2012 DOI: 10.5829/idosi.aeja.2012.5.3.132 Corresponding Author: Arash Khonok, Department of Water Sciences and Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. E-mail: agri.sarcheshmeh@yahoo.com. 40 Effect of Irrigation Management and Straw Mulch on Yield of Common Bean (Phaseolus vulgaris L.) Arash Khonok, Ali Abdzad Gohari and Reza Ebrahimpour Dargah 1 2 3 Department of Water Sciences and Engineering, 1 Science and Research Branch, Islamic Azad University, Tehran, Iran Departments of Agriculture, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran 2 Supervisor of Rice in office of Agriculture Astaneh Ashrafiyeh, Iran 3 Abstract: To investigate the effect of straw mulch on irrigation management and operation of common bean, split plot experiment in a randomized complete block design with three replications was conducted in the city of Astaneh Ashrafiyeh during the growing year 2012. These studies include no irrigation and irrigation management with three different Intervals (6, 12 and 18 days) and an amount of straw mulch (0, 1, 2 and 3 cm) in each plot was selected. The results showed that a different level of irrigation management and mulch on yield was found to be significant. But its effect on seed yield was was found non-significant. Mean data showed that the highest yield in irrigation management (2431.3 kg haG) is obtained for 6 days interval of irrigation. A yield 1 different level of mulch with 1585.6 kg haG was higher than without mulch. At the end of the season the 1 numbers of seeds podG and plant height and root traits were also measured. 1 Key words: Irrigation management %Straw mulch %Common bean %yield INTRODUCTION extreme temperature changes and loss of soil, ground Common bean (Phaseolus vulgaris L.) A crop is techniques that can preserve the soil and reduce weed considered one of the most important family members of infestations [4]. Pirboneh [5] have conducted research plant order Leguminoles and because of the high and concluded that the high volume of moisture stored in percentage of protein and other desirable agronomic soil structure and reduces evaporation by mulching the characteristics. About half of the total area under cultivated field. Jalota [6] during his research has cereal cultivation in Iran has been accounted for it. announced that in arid and semiarid regions of about 40 Common bean crop with a right main root and lateral roots to 70 percent of water loss by evaporation from the soil that tubers irregular brown nitrogen stabilizer is located. surface can be prevented by the material covering the soil Water use in agricultural production as one of the most and placed at the disposal plant. Burt et al. [7] research in important environmental factors affecting plant growth the field effect of straw mulching on soil have done, the and development, especially in arid and semi-arid results showed that this method can be used after water climatic conditions of Iran is of special importance [1]. evaporation from the soil surface from 11 to 84 percent for However, due to rising water costs and reduced water a short period and half of these reduced rate in the long availability in these areas, attention is the use of irrigation run. Zhang et al. [8] studied that in northern China with water [2]. Drought is the most vital environmental stress straw mulch reduced soil evaporation and plant water use limiting the production of crops throughout the world. efficiency is increased. Scott [9] in summer, dry mulch Of Deming et al. [3] in the field of irrigation programs on cover is suitable for any type of plant and mulch the soil the importance of optimizing irrigation management surface increases soil moisture and temperature within the strategy for optimum use of water resources in different purpose of this study on the water status of common plants is emphasized. Non-living mulch can be termed as bean plants under different levels of irrigation protective coverings for plants and used them against management and the straw mulch. water protection. Mulch is one of good management