باروری ، بافت و PH خاک و نماتدها


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در تازه ترین خبرنامه Field Crops CAT Alert دکتر Warncke  یک مقاله  منتشر کرده است با این موضوع تاثیر مقطعی  پتاسیم. بعد از خواندن این مقاله تحت تاثیر قرار گرفتم تا این مقاله را بنویسم .از انجایی که تمام نماتد های پارازیت گیاهی بخشی از وقت خود را در خاک می گذرانند و این خاک […]


عنصر نیتروژن یا ازت


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  ازت در خاک به دو صورت معدنی و آلی یافت می شود اما قسمت اعظم ازت خاک بصورت آلی است .ترکیبات معدنی ازت به فرمولهای مختلف است ، مثل آمونیوم ، NO2  ، NH4+  ، NO3-  ، NO2- ، NO  می باشند ، اما از نظر  تغذیه گیاه فقط سه فرم NO2  ، NH4+ […]


تغذیه گیاهان


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چگونه گیاهان خود را توسط مواد مغذی تغذیه کنید ؟ همانند انسان ها , گیاهان نیز به یک رژیم تغذیه متعادل برای سالم ماندن , رشد و عمر طولانی نیاز دارند .گیاهان از طریق جذب انرژی از نور خورشید برای تبدیل دی اکسید کربن و اب به شکر غذای خود را تولید می کنند .اما […]


قارچ کش کاپتان Captan


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قارچ کش کاپتان Captan کاپتان نام یک افت کش عمومی است که از دسته قارچکش های ﻓﺘﺎﻟﻴﻤﻴﺪ (phthalimide) می باشد.با وجود اینکه این قارچ کش می تواند به تنهایی مورد استفاده قرار گیرد اما بسیاری اوقات به عنوان یکی از ترکیبات اصلی در افت کش های دیگر استفاده می شود .کاپتان برای کنترل بیماری های […]


قارچ کش بنومیل Benomyl


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قارچ کش بنومیل یکی از چند قارچ کش مورد استفاده در ایران است که توسط شرکت دوپونت DuPont در ایالات متحده در سال ۱۹۶۸ تولید شد و هم اکنون در ایران در باغبانی برای از بین بردن قارچهای بیماری زا مورد استفاده قرار می گیرد .بنومیل یک قارچ کش سیستمیک benzimidazole می باشد که برای […]


روشهایی برای افزایش بهره وری در واحد سطح


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افزایش بهره وری در واحد سطح در گلخانه ها و زمین های کشاورزی با افزایش هزینه هایی که همه ساله در ایران شاهد ان هستیم از اهمیت بالایی برخوردار است تا با کاهش هزینه های جاری برای زارع سود بیشتری را به ارمغان بیاورد و بازگشت سرمایه و سود این سرمایه گزاری را برای زارع […]