Identification of crop damage caused by diseases, pests or mineral deficiencies
Among the causes for damage in crops are insects, mites and other animals, fungi, bacteria and viruses, nematodes, nutrient deficiencies and non-parasitic conditions (like weather). Many farmers are sufficiently experienced to recognize these causes. However, sometimes they are less obvious. This booklet intends to be a tool to determine causes of crop damage.
For each of the possible causes for crop damage the booklet explains the details: symptoms, origin and spread, and control. Many drawings clarify the text. Special attention is given to biological methods of curing the disease, like sterilization by steam, or crop rotation; chemicals can have effects worse than the disease itself.
The booklet provides exercises to test ones knowledge. It gives suggestions for further reading, useful addresses, and a glossary. One appendix helps identify general symptoms of damage; the second is useful identifying causes in affected plant parts, and the third explains symptoms of nutrient deficiencies. Also a form is added to describe the damage in crops, so that a Plant Research Station can help identify the cause.
Sample PDF: Identification of crop damage
No. of pages: 77