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:: Volume 11, Issue 2 (7-2009) ::
علوم زراعی 2009, 11(2): 123-135 Back to browse issues page
Effect of planting methods and plant density on grain yield and agronomic characteristics of sunflower (Helianthus annuus L.) under rainfed conditions
Abstract:   (5236 Views)
In order to study the effects of planting methods and plant density on sunflower grain yeild, a field experiment was conducted in the Dryland Agricultural Research Institute (DARI), Margheh, Iran, in 2000 and 2002 cropping seasons. This experiment was carried out, with two factors, in a split arrangement using Randomized Complete Blocks Design with four replications. Planting methods were assigned to mian plots and included planting with planter with 60 cm row spacing and broadcast + disk harrow (control). Plant densities included, 83000, 55000 and 42000 plant.ha-1 and were randomized in sub-plots. Grain yield, plant height, stem diameter, head diameter, leaf number/plant, plant per square meter (plant.m-2) and 1000 grain weight were measured. Ccombined analysis of variance showed that the effect of planting methods was significant (P<0.05) on grain yield, plant height and leaf numbers. The effect of planting methods on plant.m-2, head diameter and 1000 grain weight was highly significant (P<0.01). Mechanized planting method (average 536 kg.ha-1) had the highest grain yield. Plant density had highly significant effect (P<0.01) on head diameter, plant.m-2 and 1000 grain weight. Stem diameter was also significantly affected (P<0.05) by plant density. However, the effect of plant density on grain yield was not significant. Decreasing plant density increased head diameter, stem diameter and 1000 grain weight.. Planting method  plant density interaction was significant on head diameter. It is concluded that mechanized planting method could be recommended for sunflower crop under dryland conditions in Maragheh region.
Keywords: Dryland, Grain yield, Plant density, Planting method and Sunflower.
Full-Text [PDF 308 kb]   (3585 Downloads)    
Type of Study: Scientific & Research | Subject: Special
Received: 2015/02/22 | Accepted: 2015/02/22 | Published: 2015/02/22
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Effect of planting methods and plant density on grain yield and agronomic characteristics of sunflower (Helianthus annuus L.) under rainfed conditions. علوم زراعی 2009; 11 (2) :123-135
URL: http://agrobreedjournal.ir/article-1-209-en.html


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Volume 11, Issue 2 (7-2009) Back to browse issues page
نشریه علوم زراعی ایران Iranian Journal of Crop Sciences
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