How do storage grain losses occur?

Explanation

These are various biotic sand abiotic factors that act on stored grains and result in degradation, poor germinability, discolouration etc. Biotic factors include insects or pests that cause direct damage by feed in on seeds. They also deteriorate and contaminate the grain, making it unfit for further consumption.
Abiotic factors such as temperature, light moisture etc.also affect the seed. They decrease the germinating ability of the seeds and make them unfit for further use by farners unpredictable occurance of natural calamities such as drought and floods also causes destruction of crops.