Many chemical fertilizers are commonly used to improve soil fertility and productivity. Urea, TSP, MP, Gypsum, Borax, Ammonium nitrate etc. are used familiarly all over the world. Though these can improve the fertility of soil for the time being but in the long run they will become toxic to the soil and make hamper to the microorganisms. Now the question is which chemical is more hazardous to the microorganisms?
aronEnlightened
What kind of chemical fertilizers are more detrimental for destroying microorganisms in soil?
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John Wick
The synthetic chemicals in the chemical fertilizers adversely affect the health of naturally found soil micro-organisms by affecting the soil pH. These altered levels of acidity in the soil eliminate the micro-organisms beneficial to plant and soil health as they help to increase the plants’ natural defenses against pests and diseases. These helpful micro-organisms consist of antibiotic-producing bacteria and mycorrhizal and other fungi which are found in healthy soil. The use of chemical fertilizers also jeopardizes the health of bacteria that fix the nitrogen balance in the soil. These nitrogen-fixing bacteria are responsible for converting the atmospheric oxygen into a form of nitrogen that can be used readily by plants
Andrew Pel
Microbes need both nutrients(nitrogen) and available carbon and an environment holding water, temperature etc. Take away one and/or change to a more adverse environment and microbes decrease. Just adding inorganic fertilizers and you deplete the available carbon and likely reduce the quality of the environment they need to live.
But to answer your question; I’m thinking nitrates are the most damaging to microbes. This especially if the pH of the soil is low. Nitrates are aggressive against root hairs and microbes. Also; ammonia in soil with a high pH can be damaging to plants and microbes. The unionized ammonia (NH3) is volatile and toxic.
andrew
Sustainable agriculture is an important global issue. The use of organic fertilizers can enhance crop yield and soil properties while restraining pests and diseases. The objective of this study was to assess the effects of long-term use of chemical and organic fertilizers on tea and rhizosphere soil properties in tea orchards. Inductively coupled plasma mass spectrometry (ICP-MS) and high-throughput sequencing technology analyses were used to investigate heavy metals content and bacterial composition in rhizosphere soils. Our results indicated that organic fertilizer treatment significantly decreased Cu, Pb and Cd contents in rhizosphere soil sample. The results also showed that treatment with organic fertilizer significantly decreased the contents of Cd, Pb and As in tea leaves. Furthermore, organic fertilizer significantly increased the amino acids content of tea and the pH of the soil. The use of organic fertilizer significantly increased in the relative abundance of Burkholderiales, Myxococcales, Streptomycetales, Nitrospirales, Ktedonobacterales, Acidobacteriales, Gemmatimonadales, and Solibacterales, and decreased the abundance of Pseudonocardiales, Frankie’s, Rhizobiales, and Xanthomonad ales. In conclusion, organic fertilizer can help to shape the microbial composition and recruit beneficial bacteria into the rhizosphere of tea, leading to improved tea quality and reduced heavy metals content in rhizosphere soil and tea leaves.
avery
Infact , no chemical fertilizer is detrimental to any microbe of soil , we just creaet a wrong hype. Why dont we look at the effect of fungicides/herbicides/pesticides having so many reaction products , so immune to biological/microbial degradation for years , but we never debate these issues. Just imagine , if this is the case, our soils would have lost their carrying capacity to zero after getting exposed to so many years of feralization . Yes , i agree , if there is imbalance in fertilization and over-feralization , soil ecology will be adversely affected. We developed a microbial consortium with five component microbes , each having resistance etc chemical fertilizers up to 900-1200 ppm of uredo SSP and 600 ppm of ferrous or zinc sulphate . Where is the notion that continuous use of chemical fertilizers has deteriorated the soil fertility’s and productivity to an irreparairable limit. I don’t agree