Class notes
Educative
- Course
- Institution
The documents provide in depth knowledge on crop pathology..how fungi and molds develop in plant and their stage of development
[Show more]
Seller
Follow
milkakamau
Content preview
Introduction to plant pathologyPlant pathology is that branch of agricultural, botanical or biological sciences which deals with the
study of:
Cause of the disease
Manifestation
Resulting losses and
Control of plant diseases
Losses due to postharvest disease may occur at any time during postharvest handling, from harvest
to consumption. When estimating postharvest disease losses, it is important to consider reductions
in fruit quantity and quality, as some diseases may not render produce unsaleable yet still reduce
product value.
For example, blemished fruit may not be sold as fresh fruit but may still be suitable for processing,
in which case, it brings a lower price. It is also important to take into account costs such as
harvesting, packaging and transport when determining the value of produce lost as a result of
postharvest wastage.
Aside from direct economic considerations, diseased produce poses a potential health risk. A
number of fungal genera such as Penicillium, Alternaria and Fusarium are known to produce
mycotoxins under certain conditions.
Terminologies used in plant pathology
Plant disease: physiological disorder or structural abnormality that is deleterious to the plant or
its part or product, that reduces the economic value of the plant e.g., wilt, potato blight, Loose smut
of wheat.
Pathogen: An entity, usually a micro-organism that can incite disease. In a literal sense a pathogen
is any agent that causes pathos (ailment, suffering) or damage.
Sign - physical evidence of the presence of disease agent (e.g., mold or fungal spores, bacterial
ooze)
Symptom – are the expression of the disease caused by the manifestation of the physiological
reaction of the plant due to harmful activity of the pathogen
Host: any organism that harbour another organism is called host
Biotroph: An organism that can live and multiply only on another living organism. They always
obtain their food from living tissues on which they complete their life cycle.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller milkakamau. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $2.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now