Effect of Vermicompost Fertilizer Application on Physiological Characteristics of Rapeseed (Brassica napus L.) Genotypes in Two Sowing Dates

Subject Areas : Journal of Crop Ecophysiology

Elnaz Samadzadeh  ghale joughi ¹ (Ph.D. Student, Department of Agronomy and Horticultural Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.)
Eslam  Majidi Hervan ² (Prof., Department of Agronomy and Horticultural Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.)
Amir Hoseain  Shirani Rad ³ (Prof., Department of Agronomy, Seed and Plant Improvement Institute, AREEO, Karaj, Iran.)
Ghorban  Noormohammadi ⁴ (Prof., Department of Agronomy and Horticultural Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.)

Received: 2017-04-07 Accepted : 2018-08-29 Published : 2018-08-23

Keywords: vermicompost, Seed yield, Fatty Acids, genotype, Seed Oil percentage, Sowing date,

Abstract :

To investigate the effect of vermicompost fertilizer application on physiological characteristics of rapeseed (Brassica napus L.) genotypes in different sowing dates, an experiment was conducted using randomized complete block design arranged in factorial split plot with three replicates. The factorial combination of two sowing dates 17 and 27 October, considered as optimum and late sowing dates, respectively and two vermicompost rates, 0 and 20 t.ha-1 were allocated to the main plots and six canola genotypes (BAL104, DIE710.08, BAL102, FJL290, FJL330, Okapi) were randomized in sub-plots. The results indicated that seed yield, yield components, seed oil percentage and fatty acid compositions increased in all genotypes by different sowing dates. The highest seed yield (5853 and 5762 kg.ha-1), seed oil percentage (43.98 and 43.85%), oleic acid (65.23 and 64.93%) and linoleic acid (20.51 and 20.37%) were produced at optimum sowing date by FJL290 and BAL102 lines, which represent a high potential of this genotypes under this sowing date. In addition, application of vermicompost increased all traits under study. The result olso indicated that FJL290 and BAL102 lines can produce the highest seed and oil yields in the region, if the seeds were sown at 17 October 17th and application of 20 t.ha-1 of vermicompost.

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