Rice crop disorders A Lecture By Allah Dad Khan

2. Rice Crop Disorders
A Presentation To IPM Course/FFS Participants
By
Mr. Allah Dad Khan
Provincial Coordinator IPM KPK For MINFAL
Pakistan

3. Alkalinity
 Alkalinity impairs plant growth by obstructing root
development and restricting water supply to the
roots. This leads to various nutrient deficiencies

4. Aluminum toxicity
 Aluminum toxicity in soil inhibits the growth of plant
shoots by causing nutrient deficiencies in
Magnesium, Calcium, and Phosphorus

5. Herbicide toxicity
 Herbicide toxicity leads to poor crop emergence, root
damage, and possibly whiteheads

6. Nitrogen Deficiency
 N deficiency affects all the parameters contributing
to yield: be familiarized with the symptoms and
prevent it

7. Too Much nitrogen
 When plants receive too much nitrogen, they become
more attractive to insects and diseases

8. Phosphorus deficiency
 Phosphorus deficiency affects tillering, root
development, early flowering, and ripening

9. Potassium deficiency
 Potassium deficiency affects photosynthesis. Affected
crops are usually short and discolored

10. Sulphur Deficiency
 Sulfur deficiency affects chlorophyll production,
protein synthesis, and plant function and structure

11.  Lack of Boron affects the plant's biological processes.
This can cause rolled leaves, death of growing points,
reduced plant height, and even inability to produce
panicles

12. Boron Deficiency
 Boron toxicity is a rare condition that usually occurs
during dry season when there is high boron content
in groundwater

13. Calcium Deficiency
 Calcium deficiency results in impaired root function.
It can also lead to Iron toxicity

14. Copper Deficiency
 Copper deficiency affects photosynthesis and
respiration. This can lead to sterility of spikelets and
many unfilled grains

15. Iron Deficiency
 Iron deficient crops are not able to produce enough
amounts of chlorophyll. Infected plants are usually
yellow in color

16. Iron Toxicity
 Iron toxicity can occur when large amounts of iron
accumulate after flooding. It targets the roots and
causes leaves to bronze and dry up

17. Magnesium Deficiency
 Magnesium deficiency affects several enzyme
activities in plants and may reduce grain quality

18. Manganese Deficiency
 Manganese deficiency affects photosynthesis and
protein synthesis

19. Manganese Deficiency
 Manganese toxicity affects the plants' metabolic
processes which can lead to sterility in plants

20. Zinc deficiency
 Zinc deficiency affects several biochemical processes
in the rice plant, thus severely affecting plant growth