اثر آرايش كاشت و تراكم بوته برصفات فيزيولوژيك بادام زميني (.Arachis hypogaea L) در گيلان

Effect of Planting Pattern and Plant Density on Physiological Characteristics of Peanut (Arachis hypogaea L.) Grown in Guilan, Northen Iran

An experiment was conducted on an experimental field in Bandare Kiashahr in 2002 to evaluate the effects of planting pattern and plant density on physiological characteristics of peanut (Arachis hypogaea L.). The experiment was a factorial one with complete block design of three replications. A factorial trail of two factors comprized of planting pattern (square and rectangular arrangement) and plant density (3, 5.3, 8.3 and 14.8 plants per m2) was employed. The results indicated that the planting pattern affected Leaf Area Index (LAI) within a periode of from 45 to 90 days after planting. Leaf area index in square planting pattern was higher than that in the rectangular pattern. The effect of plant density was significant on leaf area index throughout the growth period. The effect of planting pattern on Crop Growth Rate (CGR) and on partitionig factor was statistically significant (p<0.05) and on pod growth rate (PGR) and pod yield was highly significant (p<0.01). The effect of plant density was very significant on crop growth rate (CGR), pod growth rate (PGR) and pod yield (p<0.01) and on partitionig factor (PF) and pod filling period (PFP) it was significant too (p<0.05). In square planting pattern and plant density of 8.3 plants per m2 treatment, CGR was greater than in the others. The effect of interactions betwaen plant density and planting pattern on total traits was not significant. In conclusion, square planting pattern and 8.3 plants per m2 is the treatment recommended.