To investigate effects of utilizing manure, vermicompost, triple superphosphate and urea chemical fertilizer in agriculturing flax plant, a split plot experiment, designed on randomized complete block with three replications, was conducted at research farm of agricultur
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To investigate effects of utilizing manure, vermicompost, triple superphosphate and urea chemical fertilizer in agriculturing flax plant, a split plot experiment, designed on randomized complete block with three replications, was conducted at research farm of agriculture faculty of Valieasr University of Rafsanajn. Main plots were four combinations of fertilizers including: nitrogen+phosphorus nitrogen+phosphorus+cattle manure (NPM), nitrogen+phosphorus+cattle manure+sulphur (NPMS) and vermicompost and subplots were four flax seed genotype as Kurdistan Native, E37, L22 and L18. Results showed that NPM and NPMS decreased the height of plant. Oil yield in Kurdistan Native, L22 and L18 were equal to NP when vermicompost applied but for E37 was significantly higher. Kurdistan Native had relatively high oil yield in all four fertilizer treatment. This genotype had the lowest leaf area, plant height, biological yield, as well as the shortest growth cycle. It seems that in Kurdistan Native, relatively high partitioning of photo assimilates to economic organs is directed which leads to better regulation of source-sink relations. Since adding cattle manure or sulphur to base level of fertilizer (NP) had inhibitory effects on some vegetative and reproductive traits, it is not suggested to use this fertilizer combination in saline and sodic soils similar to this experiment situation. Reduction in soil osmotic potential or toxic effects of some minerals, e.g. Na may be the cause of these effects.
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