EFFECTS OF ROW SPACING AND PLANT DENSITY ON DEVELOPMENTAL STAGES, GROWTH INDICES, REMOBILIZATION AND GRAIN YIELD OF SAFFLOWER

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POURHADIAN H.; ZAHEDI M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: JOURNAL OF CROP ECOPHYSIOLOGY Year:2012 | Volume:3 | Issue:4 Page(s): 307-323

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Title

EFFECTS OF ROW SPACING AND PLANT DENSITY ON DEVELOPMENTAL STAGES, GROWTH INDICES, REMOBILIZATION AND GRAIN YIELD OF SAFFLOWER

Author(s)

POURHADIAN H. | ZAHEDI M. | Issue Writer Certificate

Keywords

SAFFLOWERQ2

ROW SPACINGQ3

REMOBILIZATIONQ3

PLANT GROWTH INDEXQ3

Abstract

An experiment was conducted at the agricultural research farm, collage of agriculture, Isfahan University of Technology to evaluate the effects of ROW SPACING and plant density on grain yield and growth parameters of SAFFLOWER, a local variety of Isfahan, "Koseh" in summer planting. The experimental design was a randomized complete block with a split-plot layout and four replications. The main plots were row widths (20 and 30 and 45 cm) and the sub-plots were plant densities (40 and 50 plants m-2). The number of days from planting to different growth stages and the amount of LWRmax were decreased while the amounts of LWRmax, SLAmax, SLWmax was increased as ROW SPACING was increased. There were about 27.3 and 37.5 percent decrease in the rate of REMOBILIZATION of photosynthesis and grain yield respectively and also about 14.5 and 13.4 percent increase in the efficiency and contribution of remobilized photosynthesis from vegetative parts to the grains when row width changed from 20 to 45 cm. Increasing plant density significantly reduced the number of days from planting to initiation of flowering, 50% flowering and physiological maturity. There were also about 24.5, 23.2 and 18.8 percent increases in the rate, efficiency and relative contribution of remobilized photosynthesis at higher plant density treatment. A change in plant density from 40 to 50 plants m-2 significant decreased the values of LARmax and SLWmax but there were no significant effects of plant density on the values of LWRmax, SLAmax and SAFFLOWER grain yield. It can be concluded that under condition of this experiment. The results from this experiment show that to obtain the optimum yield from summer planting of SAFFLOWER, under conditions similar to this study, a planting pattern combination of 20 cm ROW SPACING and 50 plants m-2 plant appears to be suitable.

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APA: Copy

POURHADIAN, H., & ZAHEDI, M.. (2012). EFFECTS OF ROW SPACING AND PLANT DENSITY ON DEVELOPMENTAL STAGES, GROWTH INDICES, REMOBILIZATION AND GRAIN YIELD OF SAFFLOWER. JOURNAL OF CROP ECOPHYSIOLOGY, 3(4), 307-323. SID. https://sid.ir/paper/176399/en

Vancouver: Copy

POURHADIAN H., ZAHEDI M.. EFFECTS OF ROW SPACING AND PLANT DENSITY ON DEVELOPMENTAL STAGES, GROWTH INDICES, REMOBILIZATION AND GRAIN YIELD OF SAFFLOWER. JOURNAL OF CROP ECOPHYSIOLOGY[Internet]. 2012;3(4):307-323. Available from: https://sid.ir/paper/176399/en

IEEE: Copy

H. POURHADIAN, and M. ZAHEDI, “EFFECTS OF ROW SPACING AND PLANT DENSITY ON DEVELOPMENTAL STAGES, GROWTH INDICES, REMOBILIZATION AND GRAIN YIELD OF SAFFLOWER,” JOURNAL OF CROP ECOPHYSIOLOGY, vol. 3, no. 4, pp. 307–323, 2012, [Online]. Available: https://sid.ir/paper/176399/en

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