Phosphorobacterin and Its Effectiveness,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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As a result of works, carried out in institute of agricultural microbiology All-Union Academy of Agricultural Sciences proposed as bacterial fertilizing preparation, phosphorobacterin, which contains culture of spore-forming bacterium Bac. megaterium. This microorganism is capable to destroy organophosphorus compounds and to covert them into the form accessible to plants. Under field conditions phosphorobacterin, i.e. the preparation containing Bac. megaterium, slightly increases the yield of farm crops. According to the data of experimental institutions, the average increase in yield is about 10. The available data show that phosphorobacterin is more effective on the soils where phosphotoacid fertilizers were applied. This gives rise to doubt as to the thesis that phosphorobacterin mainly improves phosphorus nutrition of plants. One may also consider it proved that Bac. megaterium has not any active propagation on the root surface and in the rhisosphere of plants. This fact makes one give up the theory of R.A. Menkina, the author of phosphorobacterin, about the nature of the relationship between higher plants and Bac megaterium. The available data makes one believe that the effect of phosphorobacterin is due to the presence in Bac. megaterium culture of a number of biologically active substances stimulating the first stages of the development of bacterial plants.
- Agricultural Chemistry