Table of Contents
- 1 What causes storage grain losses Class 9?
- 2 What factors may be responsible for loss of grains during storage suggest two preventive and control measures?
- 3 What factors may be responsible for losses of grains during storage Why should preventive measures and biological control methods be preferred for protecting crops?
- 4 Which are the factors affecting storage of food grains state the methods of storage of food grains?
- 5 What are pests Class 9?
- 6 What is biological control class 9th?
What causes storage grain losses Class 9?
Answer: Storage grain losses occur due to biotic and abiotic factors. The biotic factors are bacteria, fungi, mites, insects and rodents. The abiotic factors are moisture and temperature.
What factors may be responsible for loss of grains during storage suggest two preventive and control measures?
(i) Biotic factors : These include rodents, fungi,insects, mites and bacteria. (ii) Abiotic factors: These are like inappropriate moisture and temperature conditions in the place of storage. (b) Preventive measures: (i) Strict cleaning of the produce before storage.
How do abiotic factors cause loss to stored grains?
Biotic factors such as insects, rodents, mites, fungi, bacteria, etc. and various abiotic factors such as moisture, temperature, lack of sunlight, etc. are responsible for losses of grains. These factors cause loss in weight, degradation in quality and poor germinability.
How can losses of storage can be prevented Class 9?
How can this be avoided? Answer: Food grains get spoiled by insects, fungi, rodents, bacteria, moisture, temperature in the place of storage. Storage losses can be minimised by following preventive and control measures. The seeds/grains that are to be stored should be dry, with no moisture in it.
What factors may be responsible for losses of grains during storage Why should preventive measures and biological control methods be preferred for protecting crops?
Answer: Preventive measures and biological control methods should be preferred for protecting crops because excessive use of chemicals leads to environmental problems. These chemicals are also poisonous for plants and animals.
Which are the factors affecting storage of food grains state the methods of storage of food grains?
Factors that affect food storage:
- Temperature: The temperature at which food is stored is very critical to shelf life.
- Moisture: It is recommended to remove moisture when storing foods.
- Oxygen: Foods store best when oxygen free.
- Light: Light, a form of energy that can degrade the food value of foods.
How do biotic and Abiotic factors affect storage of food grains?
The factors responsible for loss of grains during storage are: (i) Abiotic factors like moisture (present in foodgrains), humidity (of air) and temperature. (ii) Biotic factors like insects, rodents, birds, mites and bacteria.
How do you store the grains to protect them from Abiotic factors?
Grains are also stored in the Silos to protect them from pests and other factors. Farmers store grains in big containers (this) of metals, concrete containers, jute bags, or big metallic bins.
What are pests Class 9?
A pest is any destructive organism which causes great economic loss by destroying crop plants or products obtained from them. Pests of crop plants include weeds, insects, mites, nematodes, rodents, fungi, bacteria and viruses. There are various methods by which insects and diseases can be controlled.
What is biological control class 9th?
Answer : Biological control is a method of controlling pests such as insects, mites, weeds and plant diseases using other organisms. It relies on predation, parasitism, herbivory, or other natural mechanisms, but typically it also involves an active human management role. PREVIOUS NEXT.
What are the factors affecting storage?
What abiotic factors affect grain storage?
Four factors which greatly affect grain storability are grain moisture content, grain temperature, initial condition of the grain and insects and molds [10].