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KMID : 0903519740170040235
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1974 Volume.17 No. 4 p.235 ~ p.239
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Effect of two root activators [phthalamic acid and N(p - chlorophenyl) phthalamic acid] on Rice yield
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Abstract
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Rice root activiators (phthalamic acid (PA) and p-chlorophenyl PA (PCPPA) were tested in pot culture for their effects on yield of IR667-Suwon 214 weak in roof activity. The results were as follows:
1) Maximum percentage yield increase was 36.7% with organic matter applied and 13.3% without organic matter in 100 ppm (90㎖/0.05㎡) of PCPPA treatment.
2) Root activators increased oxidizing power of root (root activity), consequently gave a balanced nutrient uptake, stimulated root growth and subsequent shoot growth.
3) Rook activators increased number of panicle per hill, grain weight, filled grain ratio and effective tiller ratio.
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