EFFECTS OF SOWING DATE ON YIELD AND YIELD COMPONENTS IN WINTER OILSEED RAPE

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PASBAN ESLAM B.

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

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Paper Information

Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2009 | Volume:19 | Issue:2 Page(s): 149-163

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Information Journal Paper

Title

EFFECTS OF SOWING DATE ON YIELD AND YIELD COMPONENTS IN WINTER OILSEED RAPE

Author(s)

PASBAN ESLAM B. | Issue Writer Certificate

Keywords

COLD STRESSQ2

OILSEED RAPEQ2

PLANTING DATEQ3

ROSETTE DIAMETERQ2

SEED AND OIL YIELDQ2

Abstract

Suitable sowing date, with providing essential growth rate in OILSEED RAPE plants, lead significantly to higher SEED AND OIL YIELD via decreasing cold damages. An experiment was conducted as factorial with two factors including three sowing dates (10, 20 and 30 Sep.) and four genotypes (Licord, Modena, Okapi and Opera) using three replications. The study was carried out in East Azarbaijan Research Center for Agriculture and Natural Resources (46o and 2" E, 37o and 58" N) during 2005-7. The results indicated that genotypes at later sowing date had significantly less leaves and ROSETTE DIAMETER at the time the average air reaches below OILSEED RAPE base temperature (5oC). Therefore, late planting led to decreasing growth rate and finally increased cold damages. Significant differences were seen among genotypes, for ROSETTE DIAMETER. Opera and Okapi with ROSETTE DIAMETER of 4.18 and 3.56 mm had the highest and lowest values, respectively. Opera had also the lowest cold injury at the latest sowing date. By delaying sowing date, seed oil yield significantly decreased in all genotypes. The yield of genotypes in the 10th and 20th Sep. were acceptable. In the sowing date of Sep.30 SEED AND OIL YIELD of genotypes were different. Opera with 3607 and 1581 kg ha-1 SEED AND OIL YIELD, respectively, showed the highest yields in Sep.30. It seems that by using genotypes such as Opera, sowing date can be altered from mid September to the end of September in cold areas of Iran. SEED AND OIL YIELD had significant correlations with leaf number per plant, ROSETTE DIAMETER, plant height and harvest index. It seems that leaf number and ROSETTE DIAMETER, measured when average air temperature reached below OILSEED RAPE base temperature, and cold damage percentage, can be used to select cold tolerant OILSEED RAPE genotypes. It is expected that the genotypes having a ROSETTE DIAMETER of six mm and 6 leaves per plant, will be more tolerant to cold and will provide acceptable SEED AND OIL YIELD.

Cites

THE ROLE OF CLIMATIC FACTORS IN DETERMINING THE START DATE OF PLANTING AND GROWING PERIOD OF COLZA WITH APPLICATION OF CROPSYST MODEL (CASE STUDY: COASTAL PROVINCES OF CASPIAN SEA IN IRAN)

References

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Cite

APA: Copy

PASBAN ESLAM, B.. (2009). EFFECTS OF SOWING DATE ON YIELD AND YIELD COMPONENTS IN WINTER OILSEED RAPE. JOURNAL OF AGRICULTURAL KNOWLEDGE, 19(2), 149-163. SID. https://sid.ir/paper/29071/en

Vancouver: Copy

PASBAN ESLAM B.. EFFECTS OF SOWING DATE ON YIELD AND YIELD COMPONENTS IN WINTER OILSEED RAPE. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2009;19(2):149-163. Available from: https://sid.ir/paper/29071/en

IEEE: Copy

B. PASBAN ESLAM, “EFFECTS OF SOWING DATE ON YIELD AND YIELD COMPONENTS IN WINTER OILSEED RAPE,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 19, no. 2, pp. 149–163, 2009, [Online]. Available: https://sid.ir/paper/29071/en

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