نوع مقاله : مقاله پژوهشی
1 دانشجوی کارشناسی ارشد دانشگاه تهران
2 گروه زراعت و اصلاح نباتات دانشگاه تهران
3 استاد، پردیس کشاورزی و منابع طبیعی کرج، دانشکده علوم زراعی و دامی، گروه زراعت و اصلاح نباتات، تخصص: زراعت، اکولوژی
عنوان مقاله [English]
Intercropping system, increasing species number at area, is offered as way to increase production in agriculture. In order to investigate yield and yield components of maize and sorghum at different intercropping pattern, a randomized complete block design with four replications was conducted at the College of Agriculture and Natural Resources of Karaj, University of Tehran during 2014. The plants used in this system were fodder sorghum (Pegah cultivar) and grain maize (KSC600 cultivar). An alternative intercropping system was applied. The treatments consisted of sorghum monoculture, 75% maize: 25% sorghum, 50% maize: 50% sorghum, 25% maize: 75% sorghum and maize monoculture. The results showed that monoculture of sorghum produced the highest yield and intercropping of 75% sorghum: 25% maize produced the highest stem height and number of leaves per stem for sorghum. In maize, monoculture treatment obtained the highest grain yield (8.8 ton/ha) and 25% maize: 75% sorghum intercropping obtained the highest ear length (24 cm), number of rows per ear (18), number of seeds per row (42), and 1000 grain weight (157 g). LER was used to evaluate the efficiency of intercropping. The results showed that the index was affected by intercropping ratios. The highest level of LER = 1.8 was calculated in 25% maize: 75% sorghum. According to experiment data analysis, intercropping of maize: sorghum has useful resuls under Karaj climate.
10. Khalatbari, A. (2005). Study of quantitative and qualitative traits of intercropping millet nitrifuge: Sorghum planting in different proportions, MSc. Thesis, College of Agriculture and Natural Resources, University of Tehran (In Farsi).
11. Khan, Z. R, Pickett, J. A, Berg, J. V. D, Wadhams, L. J. & Woodcock, C. M. (2000). Exploiting chemical ecology and species diversity: Stem borer and striga control for maize and sorghum in Africa. Pest management science, 56(11), 957-962.
12. Lesoing, G. W. & Francis, C. A. (1999). Strip intercropping effects on yield and yield components of corn, grain sorghum, and soybean. Agronomy Journal, 91(5), 807-813.
13. Li, X., Simunek, J., Shi, H., Yan, J., Peng, Z. & Gong, X. (2017). Spatial distribution of soil water, soil temperature, and plant roots in a drip-irrigated intercropping field with plastic mulch. European Journal of Agronomy. 83:47-56.
14. Marer, S. B., Lingaraju, B. S. & Shashidhara G. B. (2007). Productivity and economics of maize and pigeonpea intercropping under rainfed conditions in northern transitional zone of Karnataka. Karnataka Journal of Agricultural Science, 20(1): 1-3.
15. Mazaheri, D. (2009). Intercropping as a way to increase and sustainabilty of the product, key articles on 3td Congress of Agronomy and Plant Breeding of Iran, University of Tabriz (In Farsi).
16. Pooryousof Miyandoab. M., Sharifi S., & Hasanzadeh Ghourt Tappeh A. (2010). The consideration of mixed sorghum planting impacs on maize Eco-physiological characteristics in two planting patterns. National Conference on Biodiversity and its Impact on Agriculture and the Environment, Urmia. National Plant Gene Bank of Iran (In Farsi).
17. Saffar, A. (2013). Study the effect of intercropping maize and pearl millet on fodder yield quantity and quality, MSc.Thesis, College of Agriculture and Natural Resources, University of Tehran (In Farsi).
18. Seyedi, M., Hamzeie, J., Ahmadvand, G. & Abutalebian, M. A. (2012). Investigating the possibility of weed control and crop production in chickpea and barley culture. Journal of Agricultural Knowledge and Sustainable Production. 101-114: (3)22 (In Farsi).
19. Sistachs, M., Padilla, C., Gomez, I. & Barrientos, A. (1991). Intercropping of forage sorghum, maize and soybean during establishment of different grasses in a montmorillonitic soil. Guinea grass (P. maximum Jacq.). Cuban Journal of Agricultural Science, 25(1), 83-87.
20. Weil, R. R. & McFadden, M. E. (1991). Fertility and weed stress effects on performance of maize/soybean intercrop. Agronomy Journal, 83(4), 717-721.
21. Yu Y., Stomph, T. J., Makowski D. & Van der Werf, W. (2015). Temporal niche differentiation increases the land equivalent ratio of annual intercrops: A meta-analysis. Field Crops Research. 184:133–144.