Can any one tell me what are some of the organic sources of fertilizer (Not Chemical) rich in their Boron and Zinc? Including their on farm method of preparation
Thank You Very Much
There are few commercialized Organic Zinc products which are manufactured through sophisticated fermentation process and are bio-available source of Zinc. It is enriched with gluconates lactates, which helps nutrients to get easily absorbed and assimilated into plant system, thus are very beneficial for the crops.
Please take a look at the following RG links.
Article Organic and inorganic sources of zinc, copper and selenium i...
Article Supplementation of Zinc from Organic or Inorganic Source Imp...
Article Comparison of organic and inorganic Zn sources to maximize g...
@Yared, FYM, different composts and green manures are the sources of micronutrients in organic farming. You can search in google and researchgate to get articles related to your question.
@ Yared, beside the above suggestions, you may also prepare biosynthesized nano-B and nano-Zn after using microbial protein to breakdown the B and Zn salts into nano-size. The respective nanoparticles are encapsulated by microbial protein so they are organic.
There are few commercialized Organic Zinc products which are manufactured through sophisticated fermentation process and are bio-available source of Zinc. It is enriched with gluconates lactates, which helps nutrients to get easily absorbed and assimilated into plant system, thus are very beneficial for the crops.
If the district has low B and Zn status, so will the natural products. If you found accumulators and harvested them as your organic sources, you would simply be depleting one area to advantage another.
Worm castings are a rich source of both zinc and boron.
The castings can be used as a starter amendment and/or use a tea for foliar applications.
Zinc deficiency is often found in alkaline soils and under these conditions sulfur can be very useful.
When Phosphorus is at a high level it can interfere with zinc..
1. ZnEDTA is the most commonly used organic form of soil applied Zn fertilizer. Chelating agent increases the concentration of total diffusible Zn
2. Rice straw application has also been reported to improve the Zn uptake due to amelioration of soil pH and exchangeable sodium %
3. Organic matter is a leading source of reserve Boron. Plant uptake of B is affected by pH of soil solution, temp., light intensity and conc. of Ca and K
I suppose by "organic source" you mean compounds approved for organic farming.
If so, you can use for Boron mainly sources such as sodium borate (Borax), boric acid or calcium borate. With regard to zinc, you can mainly use zinc oxide, zinc carbonate, zinc sulfate, zinc silicate or zinc complexed with approved organic ligands like lignosulfonate. Always check before the specific requirements of the involved certification Organization.
Yared Mesfin, Boron is broadly distributed in the earth’s crust and available in the form of boric acid (uncharged) or borate to plants depending on soil moisture, soil temperature, soil pH, salinity, organic matter, and climatic conditions such as precipitation. Boron availability in many parts of the world is limited because of its high solubility and leaching off by irrigation water or rainfall. However, certain approaches such as modification of root traits, grafting, Bio stimulators, Mycorrhizal Fungi, Nanotechnology or plant growth-promoting rhizobacteria can be used to enhance B uptake. For more details, please check this link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073895/
Zinc chelates (7-14% Zn) can be used as an organic source of zinc, either soil-incorporated or applied as a foliar spray. Here, the zinc ions are protected by a claw-like chemical ring, which reduces the possibility of zinc being tied-up with phosphates and carbonates in the soils. Chelated zinc remains mobile, allowing it to move freely in the soil solution for uptake by plant roots.
I cannot add more than previously mentioned, as all previous answers are organic sources of boron and zinc
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