市售植物营养剂活性之生物检测

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1、 53 pH 3.19.5 745820S/cm 1000S/cm 10 6 10 3 1 2 & 2 10 4 4% 10 3 20% 10 4 24% 10 3 46% Vitamin B 10 6 4% 10 5 28% 10 4 73% 10 3 9% 10 5 10 4 54 94 6 Bioassay for Testing the Effects of Commerical Plant Nutrients on Crop Growth Yeong-Jene Chiang Taiwan Agricultural Chemicals and Toxic Substances Rese

2、arch Institute, Council of Agriculture Abstract Commercial plant nutrients are used in order to promote crop growth, produce higher yield and quality, enhance resistance, and improve soil characteristics. In these studies, we evaluated phytotoxicity potential of commercial plant nutrients on local c

3、rops. Bioassay used involved planting pre-germinated seeds of tested species in filter papers soaked in the solutions of tested plant nutrients and measuring the radicle length after 5 days. 1% solution of tested plant nutrients showed that pH ranged from 3.1 to 9.0, and electric conductivity lay be

4、tween 74 and 5820 uS/cm. Responses of radical elongation of tested crops to plant nutrients with different dilution revealed marked difference. It would divide into five groups on the basis of suppressed degree of radical elongation. The first group exhibited unapparent difference of radical length

5、at any treated rate of tested plant nutrients. The second group had approximately 20% inhibition at 10 3 times of dilution. The third group treated with 10 4 and10 3 times of dilution was up to 24% and 46% reduction, respectively. The fourth group reduced apparently by about 28% at 10 5 times of dil

6、ution, 73% and 91% at 10 4 and10 3 times of diluted rates. The last one expressed obviously different tendency to tested chemicals. It appeared there had acceleration of radical elongation at 10 4 and10 5 times of dilution. Within tested crops, lettuce was the most sensitive to treated chemicals, mu

7、ngbean showed more tolerant than other crops. Key words plant nutrient, bioassay, radi cal elongation, growth inhibition. Weed Sci. Bull. 26(1), June 2005 55 (1, 7, 9) (11) (11) S-H FBN-5A LT (2, 11, 13) (1, 2, 5) (2, 11) (11) 56 94 6 ( - 稉 - 5 ) ( - 5 ) ( - ) ( ) ( - 2 ) 1 2 & 2 Vitamin B Sunderlan

8、d et al. (14, 15, 16) 30cm20cm 10 (0 10 3 10 410 5 10 6) (100ml/) 25 5 3 mean S.E. pH 1% pH 3.19.5 1 2 & 2 Vitamin B pH 6 Weed Sci. Bull. 26(1), June 2005 57 1) Table 1. Chemical characteristics and labeled application rates of tested commercial plant nutrients pH ( ) 7.5 4760 500 1000 3.1 816 1000

9、4.7 421 500 8.0 545 800 1200 7.4 375 20004000 10 15 3.2 1700 5.1 1140 800 1000 8.5 196 800 5000 6.2 3350 200 1000 4.5 655 800 1000 4.2 553 4.8 1270 500 1000 3.8 74 400 4.9 2440 800 1500 6.4 1720 2000 4000 1 5.6 5820 500 1000 2 4.2 2170 500 1000 8.1 167 1000 2000 9.5 694 2000 3000 8.0 4750 200 1500 7

10、.4 4430 100 6000 4.6 473 10003000 8.4 76 100 1500 9.4 1060 800 1500 7.9 735 2000 4000 & 2 4.4 1550 800 1000 4.3 652 500 1000 Vitamin B 3.2 889 500 8.3 2760 5.2 3250 1) pH 1% 58 94 6 pH 8 pH 6.27.9 ( ) 74 5820S 1000S 1 2 & 2 100S ( ) pH (8, 10, 11) 10 6 10 3 ( ) 1 2 & 2 10 4 4% 10 3 20% ( ) 10 4 24%

11、10 3 46% ( ) Vitamin B 10 6 4% 10 5 28% 10 4 73% 10 3 9% ( ) 10 5 10 4 ( ) ( ) 10 3 46 57% 10 5 44% ( ) 10 3 53 56%( ) 10 3 57 54% ( ) 10 5 37% 10 3 43 53%( ) 10 3 50% Weed Sci. Bull. 26(1), June 2005 59 稉 Fig. 1. Effects of formulated plant nutrients on the radical elongation of different tested cr

12、ops. 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 10 6 x1 0 5 x1 0 4 x1 0 3 x1 0 6 x1 0 5 x1 0 4 x1 0 3 x % % 稉 稉 稉 Fig. 1. Effects of formulated plant nutrients on the radical elongation of different tested crops. 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0 0

13、0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 10 6 x1 0 5 x1 0 4 x1 0 3 x1 0 6 x1 0 5 x1 0 4 x1 0 3 x % % 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 0 0.5 1.0 1.5 10

14、 6 x1 0 5 x1 0 4 x1 0 3 x1 0 6 x1 0 5 x1 0 4 x1 0 3 x 10 6 x1 0 5 x1 0 4 x1 0 3 x 10 6 x1 0 5 x1 0 4 x1 0 3 x1 0 6 x1 0 5 x1 0 4 x1 0 3 x 10 6 x1 0 5 x1 0 4 x1 0 3 x % % % %( ) 10 4 56% 10 3 74%( ) Vitamin B ( ) 10 3 5590% 10 4 68% ( ) 10 6 29 37% 10 4 73 60 94 6 94% 10 3 80% ( ) 3694% 10 3 8895%( )

15、 1) Table2. Effects of commercial plant nutrients on the radical elongation of different tested crops 2) 10 6 10 5 10 4 10 3 1.150.1 1.160.01 1.170.06 1.030.01 1.120.13 1.060.10 0.960.07 0.800.11 1.10.07 1.000.10 0.760.12 0.540.19 0.960.06 0.720.13 0.270.08 0.090.01 0.85 1.07 1.14 0.73 1) 2) 1 2 & 2 Vitamin B 3390% 10 4 5578% 10 3 8293% ( ) 10 5 10 3 4892% 10 4 2985% 10 3 7694% ( ) Vitamin B 10 3 70 86% ( ) Vitamin B 50% Vitamin B 10 4 10 3 Weed Sci. Bull. 26(1), June 2005 61 50% ( ) (9, 11)

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