ارزیابی عملکرد و سودمندی کشت مخلوط سویا (Glycine max (L.) Merrill.) و همیشه بهار (Calendula officinalis L.)

In order to evaluate the effect of row and strip intercropping on grain yield of soybean and inflorescences yield of calendula, a field experiment was conducted on the basis of rcbd with three replications and seven treatments in research farm of faculty of agriculture, university of tabriz in 2009. the treatments were included pure stands for both species, row intercropping and four levels strip intercropping 2:2, 4:2, 4:4 and 6:4 for soybean and calendula number of rows per strip, respectively. the effect of planting pattern on grain yield of soybean was not significant. the effect of planting pattern on inflorescence dry weight and dry petal weight of calendula was significant. row and strip intercropping 6:4 produced greater dry inflorescence weight and dry petal weight than calendula monoculture. the dry inflorescence weight and dry petal weight of row intercropping was greater than that of strip intercropping. weight advantage in terms of total land equivalent ratio (ler) and relative yield total (ryt) was greatest for 6:4 and 1:1 intercrops equal 1.34 and 1.13, respectively. the relative value total (rvt) for row intercropping and strip intercropping of 2:2, 4:2, 4:4 and 6:4 were 13.47, 8.3, 6.05 and 7.3 respectively. the results indicated that all intercropping systems produced greater gross income than soybean monoculture. also, strip intercropping 6:4 is advisable as the best method of cultivation.