Evaluation of Agronomic Attributes of Canola Cultivars under Different Plant Densities and Application of Humic Acid

Authors

Abstract:

To investigate the effect of humic acid application on agronomic characteristics of canola (Brassica napus L.) genotypes in different plant densities, a factorial split-plot experiment was performed using a randomized complete block design with three replications in the Seed and Plant Improvement Institute, Karaj, Iran. Plant density at three levels of 40, 60 and 80 plants/m2 and humic acid at two levels of 0 (non-application) and application of 0.3% were considered the main plots and canola genotypes including RGS003, Zafar, Julius, Jerry, Zabol10 and Hyola4815 were the sub-plots. The interaction effect of plant density × humic acid × cultivar was statistically significant for seed yield, oil yield, number of seeds per pod, number of pods per plant, biological yield and harvest index. Moreover, the interaction effect of plant density × cultivar was significant for oil percentage, 1000 seed weight, chlorophyll a, chlorophyll b and total chlorophyll. Generally, increased competition at the highest plant density caused an adverse effect on the tested traits of the canola cultivars. The Jerry cultivar with 40 plants/m2 (lowest density) and application of humic acid had the highest numbers of seeds per pod and pods per plant (with an average of 24.6 and 200.7, respectively) and 1000 seed weight (with the average of 4.9 g). Moreover, in the lowest plant density (40 plants/m2) and application of humic acid, the Jerry cultivar had the highest amounts of seed and oil yields (with an average of 5412 and 2196 kg ha-1, respectively). Accordingly, the examined canola cultivars had a positive reaction to the application of humic acid in different plant densities in particular at 40 plants/m2. Jerry cultivar had the maximum seed and oil yield under humic acid application condition when sown at 40 plants/m2.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

extraction and characterization of allium irancum plant extract and its application in the green synthesis of silver nano particles and oxidation of thiocarbony1 compounds

سنتز سبز نانوذرات فلزی (nps) درسالهای اخیر توجه بسیارزیادی را به خود جلب کرده است. زیرا این پروتوکل کم هزینه وسازگار با محیط زیست از روش های استاندارد سنتز. در این پایان نامه ما گزارش میکنیم یک روش ساده و سازگار با محیط زیست برای سنتز نانوذرات نقره با استفاده از محلول آبی عصاره گیاه allium iranicum به عنوان یک عامل کاهش دهنده ی طبیعی. نانو ذرات نقره مشخص شد با استفاده از تکنیک های uv-visible، x...

Effect of Soil Application of Humic Acid and Fluvic Acid on Agronomic traits of Barley

One of the most important issues affecting environmental health and sustainable food production is application of organic fertilizers instead of chemical fertilizers. This study set out to investigate the effect of application of soil humic acid and fulvic acid on barley plant. To this end a factorial experiment was carried out on the basis of randomized complete block design with four replicat...

full text

effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars

این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...

the role of application of dynamic assessment approach in improvement of iranian efl writing performance at different language proficiency levels

the present study sought to investigate the role of dynamic assessment (da) in improvement of iranian efl writing performance at different language proficiency levels. to this end, after conducting the quick placement test, 60 iranian efl learners were assigned to two groups with different language proficiency levels. in both groups each participant wrote two compositions, one before and one af...

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 9  issue 4

pages  83- 95

publication date 2020-01

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

No Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023