| Budget Amount *help |
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Research Abstract |
Of the aqueous extracts of crushed 5 kinds of paper, pH and the emergence and the incipient growth under these aqueous extracts were examined. The news paper before printing(NPBP) was lower pH, and was superior on the emergence and the incipient growth than the other papers.
In sand dune field, soybean (2003 and 2004) and maize (2004) were cultivated under soil be included the NPBP of volumetric 25%,50%,75% and 0% (control) in 10cm depth of 20cm width of seeding row, and on pot in glass house, wheat and oat were sowed at the same inclusion treatments (2004).
On treatments included 25% and 50% NPBP in soil, soil moisture content were higher, daily range of soil temperature were lower, and nitrogen content in soil horizon included NPBP were higher than on control.
In soybean, maize, wheat, and oat, at drying time when rainfall continued not in several days the emergence of treatments included 25% and 50% NPBP in soil, which were higher soil moisture content, were higher than that of the control. Furthermore, in these treatments of soybean, number of branch and pods, and yield were higher, and the stomatal resistance, which the lower, the more open, at drying time were lower, and the volume of exudation were higher than in the control. However, in maize, these effects were not recognized, and the yield were lower than in control plot. From these results of maize, it were suggested that root elongation was inhibited by soil included crushed paper.
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