Summary
Simple and multiple relationships between biomass yield of makhana (E. ferox) and various soil and water properties have been investigated. The constituents, of the water phase were more closely related to the biomass yield than those in the solid phase. Most of the constituents in the water had more highly significant correlation coefficients with biomass yield than those of soil. The soil properties were either not related at all or only weakly related. Organic matter generally controlled the nutrition and physico-chemical behaviour of the soilwater system. These factors and the aquatic nature of the plant, indicated that mass flow was the main mechanism of nutrient uptake for this crop, for which organic matter decomposition was the main source of nutrient supply. The high value of the correlation coefficient of yield with ammonium, indicated the probability thatE. ferox can take up nitrogen in the ammonium form. Bicarbonate, pH and temperature were the other factors found to be closely related to biomass production. Micronutrients due to the reducing environment induced high availability and concentration in plants more than average and hence showed negative correlation.
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Dutta, R.N., Jha, U.N. & Jha, S.N. Relationship of biomass yield of makhana (E. ferox) with soil properties and water quality. Plant Soil 95, 345–350 (1986). https://doi.org/10.1007/BF02374615
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DOI: https://doi.org/10.1007/BF02374615