Effects of NaCl application conditions on the quality of cabbage [Brassica oleracea capitata] plug seedlings
2002
"Fujiwara, T. (National Agricultural Research Center for Western Region, Fukuyama, Hiroshima (Japan)) | Yoshioka, H. | Kumakura, H. | Sato, F. | Inoue, S. "
"We investigated the effects of NaCl treatment (NaCl concentration;0.0%-2.4%. treatment frequency; onece o five times, and starting time of treatment; 2.5 or 3.5 leaves stage) to suppres succulent growth and acclimation of cabbage plug seedlings on seedling quality. 1) NaCl density to control shoot length to about 80__of control (0__) plot were 1.6% in a single treatment (ST), and 0.4% in five times treatment (FT). 2) Dry matter ratio increased in FT. 3) Na content of the seedlings increased by higher concentration of NaCl treatment. 4) The growth of seedlings after transplanting was not significant among these NaCl treatments. 5) Plug seedlings were exposed to discontinuous watering to evaluate its drought resistance at the transplanting stage. The survival rate of seedlings was greatly improved by NaCl treatment, and the effect was greater after ST than after FT. These results show that five times 0.4% NaCl treatments are suitable to decrease the shoot length by 20%. Similar effects to improve seedling quality would be obtaind by 1.6% NaCl if a single treatment is required."
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