STUDY THE RELATIONSHIP BETWEEN LIGHT EXTINCTION COEFFICIENT AND PLANT DENSITY WITH YIELD OF NUTS SUNFLOWER (HELIANTHUS ANNUUS L.) VARIETIES

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TAGHAVI D.; NOURMOHAMMADI GHORBAN; VALDIANI A.R.; FATAHI I.

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Journal: Year:2007 | Volume:13 | Issue:2 Page(s): 405-413

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Title

STUDY THE RELATIONSHIP BETWEEN LIGHT EXTINCTION COEFFICIENT AND PLANT DENSITY WITH YIELD OF NUTS SUNFLOWER (HELIANTHUS ANNUUS L.) VARIETIES

Author(s)

TAGHAVI D. | NOURMOHAMMADI GHORBAN | VALDIANI A.R. | FATAHI I. | Issue Writer Certificate

Keywords

SUNFLOWERQ2

LIGHTQ3

GRAIN YIELDQ2

PLANT DENSITYQ2

Abstract

In order to study of relationship between LIGHT extinction coefficients (k) and GRAIN YIELD of SUNFLOWER varieties, an experiment was carried out in split plot based on RCBD with 4 replications in educational -research field of Islamic Azad University of karaj in Mahdasht region at 2003. The SUNFLOWER varieties in a 3 levels as major factor were Doursephid, Ghalami and Pestei and plant densities in a 8 levels as minor factor were fixed on 50, 60, 70, 80, 90, 100, 110 and 120 thousands plant / hectare. The results of data's analysis showed, the difference of growth period and LIGHT extinction coefficient traits were significant in 5% level between varieties but other traits had significant difference between varieties in I% level and just plant height trait had no significant difference. Also the differences of all studied traits in various plant densities were significant in 1% level. Comparing of the averages with use of molti slopes Duncan method in 5% level was indicated the Doursephid c.v with average GRAIN YIELD of 4063 kg/ha is most prolific variety in this research. In this experiment the optimum density got 80000 plant / hectare and highest GRAIN YIELD was conducted in 80000 plant / hectare about Doursephid c.v with 4389 kg/ha. By the way the optimum density caused that LIGHT extinction coefficient arrived to 68% in pollination period, and lower and higher densities from optimum density caused the increase and decrease of LIGHT extinction coefficient respectively and in each two positions the GRAIN YIELD was decreased.

Cites

THE STUDY OF THE EFFECT OF PLANT DENSITY AND PLANTING PATTERN ON GRAIN YIELD, GRAIN YIELD COMPONENTS, QUANTITATIVE AND QUALITATIVE TRAITS OF SUNFLOWER IN DASHTE–NAZE, SARI

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APA: Copy

TAGHAVI, D., NOURMOHAMMADI, GHORBAN, VALDIANI, A.R., & FATAHI, I.. (2007). STUDY THE RELATIONSHIP BETWEEN LIGHT EXTINCTION COEFFICIENT AND PLANT DENSITY WITH YIELD OF NUTS SUNFLOWER (HELIANTHUS ANNUUS L.) VARIETIES. JOURNAL OF AGRICULTURAL SCIENCES, 13(2), 405-413. SID. https://sid.ir/paper/7937/en

Vancouver: Copy

TAGHAVI D., NOURMOHAMMADI GHORBAN, VALDIANI A.R., FATAHI I.. STUDY THE RELATIONSHIP BETWEEN LIGHT EXTINCTION COEFFICIENT AND PLANT DENSITY WITH YIELD OF NUTS SUNFLOWER (HELIANTHUS ANNUUS L.) VARIETIES. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2007;13(2):405-413. Available from: https://sid.ir/paper/7937/en

IEEE: Copy

D. TAGHAVI, GHORBAN NOURMOHAMMADI, A.R. VALDIANI, and I. FATAHI, “STUDY THE RELATIONSHIP BETWEEN LIGHT EXTINCTION COEFFICIENT AND PLANT DENSITY WITH YIELD OF NUTS SUNFLOWER (HELIANTHUS ANNUUS L.) VARIETIES,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 2, pp. 405–413, 2007, [Online]. Available: https://sid.ir/paper/7937/en

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