YIELD AND HARVEST INDEX OF SUNFLOWER (HELIANTHUS ANNUS) GROWN BY A MONOCULTUR SYSTEM IN COMPETITION WITH REDROOT PIGWEED (AMARANTHUS RETROFLEXUS)

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

MIRSHEKARI B.

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

Journal Paper

Paper Information

Journal: AGROECOLOGY JOURNAL (JOURNAL OF NEW AGRICULTURAL SCIENCE) Year:2010 | Volume:6 | Issue:18 Page(s): 73-88

Download Full-Text

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

Persian Verion

View:

1,411

Download:

Cites:

Information Journal Paper

Title

YIELD AND HARVEST INDEX OF SUNFLOWER (HELIANTHUS ANNUS) GROWN BY A MONOCULTUR SYSTEM IN COMPETITION WITH REDROOT PIGWEED (AMARANTHUS RETROFLEXUS)

Author(s)

MIRSHEKARI B. | Issue Writer Certificate

Keywords

BIOMASSQ2

HARVEST INDEXQ2

REDROOT PIGWEEDQ3

SUNFLOWERQ2

WEEDQ2

YIELDQ2

COMPETITIONQ2

Abstract

Study the effects of REDROOT PIGWEED (Amaranthus retroflexus) interference on YIELD and HARVEST INDEX of SUNFLOWER (Helianthus annus), a factorial experiment based on a randomized complet block design was carried out in the Islamic Azad University of Tabriz Branch, in 2007 and 2008. Factors were three WEED densities (5, 15 and 25 plants m-1 in row) at three subsequent times of WEED emergences (at the same time, 15 and 30 days after SUNFLOWER germination) and three SUNFLOWER cultivars (Azarghol, Hysun and Allstar). Indeed, a control plot was also considered for each variety in the experiment by roghing WEEDs. The results showed that biological YIELD at the third level of WEED emergence time appeared with a very low difference with the WEED-free control (680 kg ha-1). SUNFLOWER BIOMASS decreased from 1850 g/m-2 of the control to 1350 g/m-2 during the full season interference of 25 WEEDs m-1 in row. YIELD production in Azarghol at WEED emergence time of the 15 days ofter SUNFLOWER emergence decreased by 7% and 14% of that of the control where WEED density increased from a range of 5 to 15 and 15 to 25 plants/m-1 in row, respectively. Regarding to the Hysun variety, all WEED treatments YIELDed lower than the control, and the YIELD of three WEED emergence time treatments (at the same time, 15 and 30 days after crop emergence) was reduced by 49%, 37% and 16% of the control (3858) kg/ha-1, respectively. In Allstar variety, the YIELD loss was more considerable than the other two varieties and it was reduced by 35% of the lowest COMPETITION treatment that means this variety is highly susceptible to compete with WEED plants like REDROOT PIGWEED. The HARVEST INDEX was also disclosed high variation between three cultivars since it’s value was decreased by 6.5%, 13% and 39% of the control YIELD in varieties Azarghol, Hysun and Allstar, respectively.

Cites

No record.

References

No record.

Cite

APA: Copy

MIRSHEKARI, B.. (2010). YIELD AND HARVEST INDEX OF SUNFLOWER (HELIANTHUS ANNUS) GROWN BY A MONOCULTUR SYSTEM IN COMPETITION WITH REDROOT PIGWEED (AMARANTHUS RETROFLEXUS). AGROECOLOGY JOURNAL (JOURNAL OF NEW AGRICULTURAL SCIENCE), 6(18), 73-88. SID. https://sid.ir/paper/166807/en

Vancouver: Copy

MIRSHEKARI B.. YIELD AND HARVEST INDEX OF SUNFLOWER (HELIANTHUS ANNUS) GROWN BY A MONOCULTUR SYSTEM IN COMPETITION WITH REDROOT PIGWEED (AMARANTHUS RETROFLEXUS). AGROECOLOGY JOURNAL (JOURNAL OF NEW AGRICULTURAL SCIENCE)[Internet]. 2010;6(18):73-88. Available from: https://sid.ir/paper/166807/en

IEEE: Copy

B. MIRSHEKARI, “YIELD AND HARVEST INDEX OF SUNFLOWER (HELIANTHUS ANNUS) GROWN BY A MONOCULTUR SYSTEM IN COMPETITION WITH REDROOT PIGWEED (AMARANTHUS RETROFLEXUS),” AGROECOLOGY JOURNAL (JOURNAL OF NEW AGRICULTURAL SCIENCE), vol. 6, no. 18, pp. 73–88, 2010, [Online]. Available: https://sid.ir/paper/166807/en

Related Journal Papers