بررسي عملكرد و برخي صفات زراعي ذرت در كشت مخلوط نواري و كشت خالص

Assessment of Grain Yield and Some Agronomic Characteristics of Maize in Strip Intercropping and Mono- Cropping Systems

In order to determine the effects of strip width and adjacent species in strip intercropping systems on yield and some agronomic characteristics of maize, a field experiment in factorial lay out based on randomized complete block design with five treatments and three replications was carried out at Research Station of the Faculty of Agriculture, Tabriz University, in 2005. Treatments included mono-cropping of maize and four strip-intercroppings. The first factor was two spatial arrangements, consisting of soybean-maize-soybean and calendula-maize-soybean. The second factor consisted of two strip widths as 3-2-3 and 6-3-6 for soybean, maize and calendula, respectively. Strip intercropping with first arrangement and first width produced highest grain yield per plant and per hectare. The first arrangement had greater grain yield than second arrangement. The 100 seed weight in the first arrangement and each strip width was higher than maize mono-cropping. The highest and lowest biological yield was related to first arrangement-first width and second arrangement-first width respectively. The greatest grain yield increase was observed in the first arrangement and the first width strip. The second arrangement with the first width had three percent yield loss as compared to mono-cropping.