How do storage grain losses occur? - Science

Question

How do storage grain losses occur?

Answer

Storage grain losses occur due to two main factors:

Biotic factors: Insects, rodents, fungi, mites, and bacteria.
Abiotic factors: Inappropriate moisture and temperatures in the place of storage.

These factors lead to degradation in quality, loss in weight, and poor germination.

What do we get from cereals, pulses, fruits and vegetables?

How do biotic and abiotic factors affect crop production?

What are the desirable agronomic characteristics for crop improvements?

What are macro-nutrients and why are they called macronutrients?

How do plants get nutrients?

Compare the use of manure and fertilizers in maintaining soil fertility.

Which of the following conditions will give the most benefits? Why?

(a) Farmers use high-quality seeds, do not adopt irrigation or use fertilizers.

(b) Farmers use ordinary seeds, adopt irrigation and use fertilizer.

Why should preventive measures and biological control methods be preferred for protecting crops?

What factors may be responsible for losses of grains during storage?

Which method is commonly used for improving cattle breeds and why?

Subject: Science
Class: class 9
Chapter 12: Improvement in Food Resources
Medium: English Medium