Yield and Quality of Berseem (Trifolium alexandrinum L.) in Response to Nitrogen Fertilization and Plant Density
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2015, Vol 9, Issue 6
Abstract
A field experiment was carried out in 2012 at agriculture research field of Qaemshahr, Iran, to investigate the effect of nitrogen fertilizer levels and plant density on morphological and physiological characteristics of berseem (Trifolium alexanderium L.). Nitrogen fertilizer at (0, 50 and 100 kg/ha) was the main plot and the sub plot was plant density at 25, 50, 75 and 100 kg/m2 . The results showed that by increasing the amount of nitrogen, the nitrogen-fixing and plant height decreased. Also, increase the plant density, reduced plant height and shoot dry weight, while the leaf fresh weight increased. Also, a significant positive correlation was between the amount of nitrogen fixation and nitrogen percentage of shoot. The results indicated that berseem by blocking the formation of nodules and nitrogen fixation to high level of nitrogen intake showed negative reaction. The increased use of nitrogen fertilizer and plant density had no significant effect on forage yield. By reducing use of nitrogen fertilizer and seed rate can be economically save and environmental impact will be positive.
Authors and Affiliations
Seyede Roghaye Hosseini Valiki| MSc student of Agronomy Department, Faculty of Agriculture Sciences and Natural Resources, Qaemshahr branches, Islamic Azad University, Qaemshahr, Iran. email: rhosseiniv@yahoo.com, Sobhanallah Ghanbari| Department of agriculture, Faculty of Agriculture Sciences and Natural Resources, Qaemshahr branches, Islamic Azad University, Qaemshahr, Iran., Sajedeh Golmohammadzadeh| Sc student of Department of Agronomy, Faculty of Crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran, Yaser Alaeiyan| MSc student of Agronomy Department, Faculty of Agriculture Sciences and Natural Resources, Qaemshahr branches, Islamic Azad University, Qaemshahr, Iran.
Keywords
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