Skip to main content Accessibility help
×
Home

The Use of a Microbalance in Putting up Uniformly Sized Batches of Heterodera Cysts for Experiment.

  • D. W. Fenwick (a1) and Elizabeth Reid

Extract

Tests were conducted using a capillary microbalance to estimate the errors introduced as a result of weighing out replicate cyst batches in place of counting.

Experiments with differently sized samples showed that the normal relationship between sample size and accuracy applied to such cases, the error for samples of 100 cysts being usually of the order of less than 10%. There is some evidence that the errors in cyst number introduced as a result of weighing is reflected by an increased error in the larval count, although under the conditions of experiment the increase was barely significant. It is suggested that if replication is increased by 50% or 100% then errors due to inequality in cyst numbers are more than counteracted.

Copyright

References

Hide All
Fenwick, D. W., 1940.—“ Methods for the recovery and counting of cysts of Heterodera schachtii from soilJ. Helminth., 18 (4), 155172. (W.L. 11224b.)
Fenwick, D. W., 1949.—“ Investigations on the emergence of larvae from cysts of tire potato-root eelworm Heterodera rostochiensis. (1) Technique and variability.” J. Helminth., 23 (3/4), 157170. (W.L. 11224b.)
Lownsberry, B. F., 1950.—“ Stimulation of golden nematode larvae by root leachings.” (Abstract of paper presented to the 41st Annual Meeting of the American Phytopathological Society, New York City, December 28–30, 1949.) Phytopathology, 40 (1), 18. (W.L. 16273.)

The Use of a Microbalance in Putting up Uniformly Sized Batches of Heterodera Cysts for Experiment.

  • D. W. Fenwick (a1) and Elizabeth Reid

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed