Download e-book for iPad: Atlas and Manual of Plant Pathology by E.H. Barnes

By E.H. Barnes

ISBN-10: 0306401681

ISBN-13: 9780306401688

ISBN-10: 1468434950

ISBN-13: 9781468434958

Ideally a textbook may still combine with the lectures and labs in a technology direction. pick out­ ing the sort of ebook might be an hard (and occasionally very unlikely) job for the trainer. scholars are cautious of having caught with a "useless" ebook, i. e. , one to which the trainer by no means refers. The reader most likely has a few useful appreciation in their hindrance. I remem­ ber an teacher who not just denounced the very textual content he had selected, but in addition educated the category that he would not be utilizing it. This was once after I had already bought a replica! Being aware of the foregoing, i made a decision to attempt Barnes' Atlas and guide of Plant Pathology in 1973. Six years and 800 scholars later i've got no regrets approximately my selection. so far as i'm involved it truly is nonetheless the best ebook of its variety in this continent. Barnes' Atlas comprises a superb mixture of the diagnostic and experimental facets of plant pathology. His remedy of every affliction on someone foundation permits the instruc­ tor to forget a few pathogens with no aggravating the book's continuity. My one-semester direction in wooded area Pathology is basically descriptive. powerful emphasis is put on box popularity of signs and indicators. this is often facilitated through Barnes' procedure. In a series of photos, the diseased plant or half is first considered as an entire to teach the final indicators. this is often often by way of a close-up ofthe symptoms (i. e.

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Sample text

Keep up-to-date and accurate notes as you proceed or you will become confused. The instructor may choose to make the activities of Experiment III, IV, and V part of this comprehensive exercise in the fulfillment of Koch's Postulates, or he may choose to repeat them for practice. The progress of activity is outlined in phases with Koch's Postulates indicated where appropriate. First Koch Postulate: Associate organism with disease symptoms. Phase I. Examination of Diseased Tissues (Experiment IV).

Turn the plate 90° and repeat with a sterilized loop (Fig. 6C). Be sure not to touch the first streak, only the second zig-zag streaks. Turn the plate another 90° and streak again with a sterilized loop, touching only the last streaks made (Fig. 56D). The bacteria are diluted by the streaking (Fig. 5-5) . DISCUSSION QUESTIONS l. Of what value are these techniques? What can be accomplished with them? 2. Why must the agar be cooled before use in the dilution plate method? 3. Why is 1 % sodium chloride and not distilled water used for making the dilu· tions?

Of diseased tissue. The healthy tissues are not likely to be contaminated by handling if different students handle the diseased materials. 2. The two student preparators then macerate their specimens separately in a sterilized blender cup containing 99 ml. of 1% solution sodium chloride. 3. Transfer 1 ml. of the suspension of healthy tissues in each of 3 sterile petri dishes. Use a sterile pipette and sterile techniques. Each ml. has 1/100 of the original material from the healthy tissue. This is a dilution of 10-2 • Label the petri dishes during the experiment.

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Atlas and Manual of Plant Pathology by E.H. Barnes

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