Postharvest diseases are
those that appear and develop after harvest
. Outcomes of postharvest diseases. • Products with defects are unmarketable leading to increased. cost of production and occasionally loss of an entire crop.
How do you control post harvest disease?
Strategies employed to control postharvest diseases include (a)
inoculum reduction
, (b) prevention and eradication offield infections, (c) inactivation of wound infections, and (d) suppression of disease development and spread.
What causes post harvest diseases?
Virtually all postharvest diseases of fruit and vegetables are caused by
fungi and bacteria
. In some root crops and brassicas, viral infections present before harvest can sometimes develop more rapidly after harvest. In general, however, viruses are not an important cause of postharvest disease.
What are common post harvest decay organisms?
There are three main fungal species:
Monilinia laxa, M. fructigena and M. fructicola
. The pathogen infects aerial parts of host plants with a variety of symptoms, including blighting of blossoms, cankers on woody tissues and rotting of fruits, although the prevalent fruit losses are in the postharvest phase.
Which is post harvest disease of potato?
| Black leg Dry rot Late blight | Potato wart Sclerotium rot Charcoal rot Silver scurf |
What is quiescent infection?
Quiescent:
Inactive, resting
. For example, tuberculosis can be a quiescent (inactive) infection.
Which is a causative agent black mold rot in fruits and vegetables?
Alternaria alternata
causes black spot in many fruits and vegetables around the world. It is a latent fungus that develops during the cold storage of fruits, becoming visible during the marketing period thereby causing large postharvest losses.
Who developed zero energy cool chamber?
History. The brick ECC was originally developed in India by
Susanta K. Roy and D.S. Khuridiya
in the early 1980s to address fruit and vegetable post-harvest losses, especially in rural areas where electricity is non-existent.
What is the plant disease triangle?
The disease triangle points out that
three favorable conditions must coexist to cause a disease problem
. These three are the pathogen, a susceptible host (plant) and proper environmental conditions.
Why do we perform pre harvest operation?
To
ensure only appropriate trees are harvested
, in a manner that is consistent with maintaining a vigorous forest. To maintain desirable species composition of the forest after harvesting and a viable residual stand.
What is anthracnose fungus?
Anthracnose is a term used to loosely describe
a group of related fungal diseases that typically cause dark lesions on leaves
. In severe cases it may also cause sunken lesions and cankers on twigs and stems.
What causes dry rot in potatoes?
Dry rot is caused by
several fungal species in the genus Fusarium
, thus the name Fusarium dry rot. The most important dry rot pathogen in the Northeast is Fusarium sambucinum, although Fusarium solani is also present.
How do you keep potatoes from getting blackleg?
- crop rotation.
- using well-drained soil.
- avoid over-watering and over-fertilizing.
- removing and destroying infected plants.
- regularly cleaning up plant debris from the garden.
What is the meaning of quiescent period?
If there’s a particular time of day when your ten kittens settle down to nap, you can call that their period of quiescence, or
the time when they are all quiet and restful
. The noun quiescence looks similar to the word “quiet” for a good reason: quiescence is a quiet spell or state.
What is seed quiescence?
Quiescence is
a state of suspended growth of the embryo, or a resting condition of the seed
. It involves factors in the seed itself which put it into a resting state (such as dessication). … Until such an event occurs, the seed is prevented from germinating. Fast Plants seed is quiescent but not dormant.
What is curing in post harvest?
Curing is
a drying process intended to dry off the necks and outer scale leaves of the bulbs to prevent the loss of moisture and the attack by decay during storage
. It can be carried out in the field under dry conditions by windrowing the bulbs as described above under Harvesting.
