Relationship between agronomic characteristics and plant density in dual purpose oil-confectionery type sunflower

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Ghaffari Mehdi

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Journal: JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE) Year:2019 | Volume:21 | Issue:1 Page(s): 1-12

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Title

Relationship between agronomic characteristics and plant density in dual purpose oil-confectionery type sunflower

Author(s)

Ghaffari Mehdi | Issue Writer Certificate

Keywords

LakomkaQ2

oil yieldQ2

regressionQ3

row spaceQ1

seed weightQ2

Abstract

In order to study the effect of row spacing and plant density on agronomic traits of dual-purpose sunflower, cultivar Lakomka, a two-year study has been carried out in Khoy from 2014, which is a factorial experiment based on RCB design, with four replicates. The treatments of this experiment include row spacing at two levels (60 and 75 cm) along with five plant densities (30, 45, 60, 75, and 90 thousand plants. ha-1). According to the results, there is no significant difference between 60 and 75 cm row spacing for any of the studied traits; however, plant density has a considerable effect on all these traits. As plants get denser, the phenological stages accelerate and head diameter decrease, even though plant height and oil content ascend. Also, seed weight is decreased from 115 g to 84 g, while oil content is increased from 36% to 39% as plant density rises from 30 to 90000 plants. ha-1. The highest seed and oil yields (4132 and 1611 kg ha-1) have been observed in plant density of 75000 plants. ha-1. The regression analyses reveal that oil content, plant height, and seed number are the most effective traits to estimate oil yield. Results from this study indicate that plant densities of 75 and 45000 plants. ha-1 are optimum densities for production of cultivar Lakomka with the highest oil yield as well as confectionary usage in the city of Khoy, West Azarbaijan Province, Iran.

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APA: Copy

Ghaffari, Mehdi. (2019). Relationship between agronomic characteristics and plant density in dual purpose oil-confectionery type sunflower. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), 21(1 ), 1-12. SID. https://sid.ir/paper/209558/en

Vancouver: Copy

Ghaffari Mehdi. Relationship between agronomic characteristics and plant density in dual purpose oil-confectionery type sunflower. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE)[Internet]. 2019;21(1 ):1-12. Available from: https://sid.ir/paper/209558/en

IEEE: Copy

Mehdi Ghaffari, “Relationship between agronomic characteristics and plant density in dual purpose oil-confectionery type sunflower,” JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), vol. 21, no. 1 , pp. 1–12, 2019, [Online]. Available: https://sid.ir/paper/209558/en

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