The effect of fertilizers on the chemical composition and quality of dew-retted hemp fiber
1947
Hessler, L.E.
Nitrogen fertilizers increase the growth of hemp and give greater yields of dew-retted hemp fiber, but at the same time the quality may be inferior because the fiber is coarser and weaker. The same may be said of hemp fiber produced on soil high in nitrogen. The cellulose content of the fiber was significantly increased where the complete fertilizer was used; however, during retting the more labile secondary constituents tend to level off in concentration regardlessof fertilizer treatment. Correlation coefficients show that encrusting material plays a part in increasing or decreasing strength of fiber. Fineness of fiber as measured by centimeters per gram of fiber gave a significant positive correlation coefficient with breaking strength. Correlation between fiber constituents and fineness was not significant. All encrustants show a negative correlation with the primary fiber constituent, cellulose; and lignin, protein, and ash gave highly significant correlation coefficients while pentosans gave a significant r.
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