Yield and yield components of wheat as influenced by intercropping of oilseed rape and fertilizers
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2013, Vol 3, Issue 6
Abstract
A field experiment was carried out at Research Farm of Tabriz University, Tabriz, Iran, over consecutive 2 winter seasons (2010-2012) in order to study the profitability of wheat (Triticum aestivum L.) and oilseed rape (Brassica napus L.) intercropping under 2 types of fertilizer. A sole crop of wheat (A1) was compared with 8:3 (A2), 12:4 (A3) and 16:5 (A4) row proportions of wheat-oilseed rape intercropping systems under 100% chemical fertilizers and 50% chemical fertilizers + biofertilizers. The results showed that grain yield increased by 22.25, 25.38 and 13.72 percent over sole crop of wheat in case of intercropping of wheat-oilseed rape at 8:3, 12:4 and 16:5 rows, respectively. The 12:4 rows combination gave significantly higher number of spike/m2 (611.6), grain yield (610.3 g/m2) and biological yield (1353.0 g/m2) than that of sole wheat (513.4, 455.3 g/m2and 1072.7 g/m2, respectively). According to measured traits, A2 and A3 had no statistically significant difference and so sole crop of wheat had the lowest value for all of studied traits. In 2010-2011, spike length and grain umber per spike were more than those of 2011-2012, while the number of spike per plant and per unit area, 1000 grain weight and harvest index were greater in 2011-2012. Treatment 100% chemical fertilizer had significantly higher grain yield (575.8 g/m2) and biological yield (1301.7 g/m2) than that of 50% chemical fertilizer + biological fertilizers. Therefore, it was concluded that strip intercropping of wheat and oilseed rape in 8:3, and 12:4 row ratio had the maximum yield components that it led to increase grain yield.
Authors and Affiliations
Rashin Amir Mardfar, Yaegoob Raei, Adel Dabbagh Mohammadi Nassab, Samad Khaghaninia, Rouhollah Amini
Keywords
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