واکنش ظهور و رشد گیاهچه‌ای لوبیا سبز (L. Phaseolus vulgaris) به مقادیر مختلف ورمی کمپوست

نوع مقاله : علمی - پژوهشی

نویسندگان

چکیده

امروزه تولید بیشتر محصول مستلزم استقرار بهتر گیاهچه و سرعت و یکنواختی سبز شدن بذرها می‌باشد. به همین منظور در آزمایشی در سال 1387 به صورت طرح بلوک کامل تصادفی با 8 تیمار کودی و 4 تکرار اثرات ورمی کمپوست بر ظهور و رشد گیاهچه‌ای لوبیا سبز مورد بررسی قرار گرفت. تیمارها شامل 3 سطح از ورمی کمپوست (15، 30 و 45 تن در هکتار به صورت جداگانه و غنی شده با 50 درصد کود شیمیایی)، کود شیمیایی (100 کیلوگرم در هکتار اوره، سولفات پتاسیم و سوپر فسفات تریپل) و شاهد (بدون مصرف ورمی کمپوست و کود شیمیایی) بود. نتایج نشان داد که بالاترین درصد سبز شدن و سرعت ظهور گیاهچه، طول گیاهچه و ریشه تحت تیمار 15 تن ورمی کمپوست غنی شده با کود شیمیایی در هکتار و حداکثر محتوی کلروفیل، وزن خشک اندام هوایی و گیاهچه تحت تیمار 30 تن ورمی کمپوست غنی شده در هکتار حاصل شد. مقایسات گروهی بیانگر آن بود که گروه 30 تن کمپوست در هکتار موجب افزایش معنی دار سرعت ظهور گیاهچه (18/36%)، سرعت ظهور تجمعی (82/49%)، سطح برگ (67/44%)، وزن تر و خشک گیاهچه (56/60% و 04/74%) در مقایسه با 45 تن کمپوست در هکتار گردید. در تمام تیمارهای کودی رابطه خطی و قوی بین سرعت ظهور تجمعی و سرعت ظهور گیاهچه و وزن خشک اندام هوایی و ریشه وجود داشت با این وجود مقدار این صفات در تیمارهای ورمی‌کمپوست 15 و 30 تن در هکتار بیشتر از تیمارهای دیگر مخصوصاً شاهد و کود شیمیایی بود.

کلیدواژه‌ها


عنوان مقاله [English]

Response of bush bean (Phaseolus vulgaris L.) seedling emergence and growth to different vermicompost amounts

نویسندگان [English]

  • Alaleh Mottaghian
  • Hematollah Pirdashti
  • Mohammad Ali Bahmanyar
چکیده [English]

Recently, increase in crop production depends on better seedling establishment, emergence rate and uniformity. Thus, an experiment was carried out in a randomized complete block design with 8 fertilizer treatments and 4 replications in 2008 at Sari Agricultural Sciences and Natural Resources University. The aim of this research was to evaluate effect of vermicompost (VC) on bush bean seedling emergence parameters. The treatments were three levels of VC (15, 30 and 45 Mg ha-1 alone and plus with 50% chemical fertilizer), chemical fertilizer (100 Kg ha-1 Urea, Potassium sulfate, Triple super phosphate) and a control (no vermicompost or chemical fertilizer application). Among all treatments, strongly linear regression was observed between CER and FER and shoot and root dry weight, however, amount of these traits was greater in 15 and 30 Mg ha-1 than other treatments specially, control and chemical fertilizers. Analysis of data showed that the highest of field emergence rate, cumulating emergence rate and seedling and root length was obtained in 15 Mg enriched VC per hectare and maximum chlorophyll content, aerial parts and seedling dry weight was belonged to 30 Mg enriched VC per hectare. The orthogonal contrasts revealed that 30 Mg ha-1 compost was caused significant increases field emergence rate (36.18%), cumulating emergence rate (49.82%), leaf area (44.67%), seedling fresh and dry weight (60.56% and 74.04%) compared to 45 Mg ha-1 compost.

کلیدواژه‌ها [English]

  • Emergence
  • Emergence rates
  • Organic fertilizer
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