جبر را گر جبر به جبری جبرا اختیارت . نداری دگر فرصت اختیار تا اختیار اختیارا کنی علیرضا فرجزاد -- کشاورزی/ بیو تکنولوژی . /"Биотехнология | Biofertilizer"...Ali Reza FarajzadehBiotechnology
Biofertilizer"...Ali Reza FarajzadehBiotechnology researchOrganic fertilizers

 

فقط امید وارم که در اقلیم ایران بتوانیدبه این سایت ها دسترسی پیدا کنید.

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سلام بر تمامی کسانی که در راه  صلح  وجهان بدون جنگ

میخواهند.

ما اماده انتقال دانش فنی تکنولوژی

برای کل کشاورزان جهان.

با پشتوانه ۱۷ .هفده سال

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Merhaba tüm bu küresel köy Merhaba savaş olmadan tüm bu barışçıl bir dünya. Istiyorum. Biz teknoloji transferi biliyorTüm dünya için Çiftçiler.Destek 17. Onyedi yıl ile İran ve iklim dışında iklim araştırma ve çalışma deneyleri Vhzvr Mahfdh yıl ürettiğimiz uluslararası toplumda yaşarlar. Kendi çiftçilerinin istiyorum Gübre üreticileri Çiftlik veya bahçe gereklidir. Sadece çiftliğin yanında, gübre üretim tesisi koymak Biyoteknoloji araştırmacı Ali Reza Farajzadeh. =

Biofertilizerبه این صفحه مراجعه شود

...Ali Reza FarajzadehBiotechnology researchOrganic fertilizers

 

Biological fertilizer

June 25th, 2012

Biological fertilizerBiological fertilizer

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From Wikipedia ( View original Wikipedia Article ) Last modified on 17 June 2012, at 13:55

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Blue-green algae cultured in specific media. Blue-green algae can be helpful in agriculture as they have the capability to fix atmospheric nitrogen to soil. This nitrogen is helpful to the crops. Blue-green algae is used as a bio-fertilizer.

A biofertilizer (also bio-fertilizer) is a substance which contains living microorganisms which, when applied to seed, plant surfaces, or soil, colonizes the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrients to the host plant.[1] Bio-fertilizers add nutrients through the natural processes of nitrogen fixation, solubilizing phosphorus, and stimulating plant growth through the synthesis of growth-promoting substances. Bio-fertilizers can be expected to reduce the use of chemical fertilizers and pesticides. The microorganisms in bio-fertilizers restore the soil's natural nutrient cycle and build soil organic matter. Through the use of bio-fertilizers, healthy plants can be grown, while enhancing the sustainability and the health of the soil. Since they play several roles, a preferred scientific term for such beneficial bacteria is "plant-growth promoting rhizobacteria" (PGPR). Therefore, they are extremely advantageous in enriching soil fertility and fulfilling plant nutrient requirements by supplying the organic nutrients through microorganism and their byproducts. Hence, bio-fertilizers do not contain any chemicals which are harmful to the living soil.

Bio-fertilizers eco friendly organic agro-input and more cost-effective than chemical fertilizers. Bio-fertilizers such as Rhizobium, Azotobacter, Azospirillum and blue green algae (BGA) have been in use a long time. Rhizobiuminoculant is used for leguminous crops. Azotobacter can be used with crops like wheat, maize, mustard, cotton, potato and other vegetable crops. Azospirillum inoculations are recommended mainly for sorghum, millets, maize, sugarcane and wheat. Blue green algae belonging to a general cyanobacteria genus, Nostoc or Anabaena or Tolypothrix or Aulosira, fix atmospheric nitrogen and are used as inoculations for paddy crop grown both under upland and low-land conditions. Anabaena in association with water fern Azolla contributes nitrogen up to 60 kg/ha/season and also enriches soils with organic matter.[2]

Other types of bacteria, so-called phosphate-solubilizing bacteria, such as Pantoea agglomerans strain P5 or Pseudomonas putida strain P13,[3] are able to solubilize the insoluble phosphate from organic and inorganic phosphate sources.[4] In fact, due to immobilization of phosphate by mineral ions such as Fe, Al and Ca or organic acids, the rate of available phosphate (Pi) in soil is well below plant needs. In addition, chemical Pi fertilizers are also immobilized in the soil, immediately, so that less than 20 percent of added fertilizer is absorbed by plants. Therefore, reduction in Pi resources, on one hand, and environmental pollutions resulting from both production and applications of chemical Pi fertilizer, on the other hand, have already demanded the use of new generation of phosphate fertilizers globally known as phosphate-solubilizing bacteria or phosphate bio-fertilizers.[citation needed]

Benefits

A bio-fertilizer provides the following benefits:

  1. Since a bio-fertilizer is technically living, it can symbiotically associate with plant roots. Involved microorganisms could readily and safely convert complex organic material in simple compounds, so that plants are easily taken up. Microorganism function is in long duration, causing improvement of the soil fertility. It maintains the natural habitat of the soil. It increases crop yield by 20-30%, replaces chemical nitrogen and phosphorus by 25%, and stimulates plant growth. It can also provide protection against drought and some soil-borne diseases.
  2. Bio-fertilizers are cost-effective relative to chemical fertilizers. They have lower manufacturing costs, especially regarding nitrogen and phosphorus use.
  3. It is environmentally friendly in that it not only prevents damaging the natural source but also helps to some extent cleanse the plant from precipitated chemical fertilizers.

References


برچسب‌ها: Biofertilizer, Ali Reza FarajzadehBiotechnology researchOrganic f

تاريخ : چهارشنبه بیست و یکم تیر ۱۳۹۱ | ۹:۱ ب.ظ | نویسنده : Biyoteknoloji araştırmacı Ali Reza Faraj |
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