Nutrient use efficiency is static over the decades by using these conventional fertilizers. They are many nutrient sources. Can those be a good replacement against urea and DAP?
These are straight fertilizers and cheaper also , with an exception of MOP. Unfortunately , what you have as alternatives , very limited option....
Yes I agree sir, but NUE is static over the years and even depleting soil fertility greatly. Except cost benifits, problems are plenty. Is there any alternative s?
@ Rajanna, I strongly feel that we should increase the NUE by adopting nanofertilizers as early as possible. For this, we should intensify our research on ethical issues and doses and stability of nanofertilizers. The support from the government side is also urgently needed as and when required.
Yes sir, what you said is absolutely right. We should of alternate fertilizer like nano to increase NUE. Seems conventional fertilizers having very limited scope in enhancing NUE besides using GS, SPAD etc
Several researcher have evaluated different sources of nutrients under different soil and climatic conditions to enhance fertilizer use efficiency. I think we must include bio fertilizer in crop production in addition to chemical fertilizers. Bio-fertilizers have lot of potential to enhance nutrient use efficiencies.
Sir, biofertilizer s can enhance NUE upto certain level. But may not be a alternative sources. Those can not replace urea
That's true but we need those rhizocompetent microbes which can resist under high load of chemical fertilizers. But , there is natural resistance of microbes , which are are functional in those fields maintained under long continuous use of chemical fertilizers. Biofertigation is another issue , could be looked into..
@ Swaminathan, I already mentioned the alternate is the Nanofertilizer which need to adopt as early as possible with the government support.
It is not possible to alternative sources of urea, DAP and MOP till today and also in future. During 1980 so many researchers evaluated coated urea and others nutrients fertilizer but today resulted nil in field and also nanofertilizers like that. Today , needs integrated approach of easily available sources of OM, microbes with inorganic fertilizers.
@ Yaduvanshi, I personally tested different nanonutrients almost 18 crops so far both in research as well as farmers fields and find 2 to 20 times more nutrient use efficiency of different nutrients in all the crops. Therefore please dont use the term Not Possible.
This is a nice discussion. I believe new and better fertilizers should be introduced. Especially with better nutrient efficiency. The trials I have conducted with reference to DAP has performed equally good. In conclusion I would prefer not to use the term replace. Replacement should be natural. Environmental impact also key to the replacement. I like an integrated approach.
Since its inception, synthetic fertilizers like Urea, TSP, MOP showed far better performance over any other type of fertilizer. Entire replacement is still out of reach, especially in the commercial cultivation of crops. But until such replacement, hybrid fertilizers such as organo-mineral fertilizers seem to be a better option.
Fertigation with water-soluble fertilizers through drip especially in high-value crops is a very efficient system to achieve high nutrient use efficiency by minimizing nutrient leaching and applying at right time in the right dose at the right place.
@ Yaduvanshi, we have costed biosynthesized nanofertilizers, which is costed 2-4 times less than different chemical fertilizers mainly because there requirement is 80-100 times less as compared to chemical fertilizer.
Dr Tarafdar if 2-4 time less cost and 80 times less requirement. It is good and manufacturing by Govt level because lot of money expanded by Govt to purchase of DAP and MOP. Today its not popularized to farmers field and also not available to ground level. Nanofertilizers resulted more NUE as per different researchers and also published work but till date farmers like integrat approches
Dr. Yaduvanshi, IFFCO has already started manufacturing nanofertilizer but due to absence of FCO guidelines they are unable to market the products. Therefore, I feel, Government should take immediate action to finalize the guidelines in India so that industries can marketed the Nanofertilizers.
Seems, fruitful discussion is going on. Thank you all for nice discussion.
In my view, their is a huge scope for usage of alternate fertilizes like nano, seaweed extracts, organic manures etc along with conventional fertilizers. May be we cant replace these, but in near future (with in couple of years) nanofertilizers can be extensively used by the farmers if Govt provides all the necessary actions related to subsidies (if it proves biologically also, i.e. human beings study ).
That's true but we need those rhizocompetent microbes which can resist under high load of chemical fertilizers. But , there is natural resistance of microbes , which are are functional in those fields maintained under long continuous use of chemical fertilizers. Biofertigation is another issue , could be looked into..
Dr. Tarafdar, our scientist evaluated so many nutrients coated fertilizer s but unfortunately now only neam coated urea used by farmers I hope farmers may be used nanofertilizer in future and benefits to our farmers. Dr tomer DAP and MOP used as besal application and urea as top dressing/spray at evening time and also used to integrated manner may be increased NUE
Nano-fertilizers might be a better option provided favorable government policies on production, distribution, encouragement to use through effective extension mechanism and subsidy.
Nano fertilizer may be possible but in India these fertilizers can not possible in future
Organomineral fertilisers may be a good solution to increase both fertiliser use efficiency (especially over urea) and to minimize the synthetic fertiliser usage.
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