Agricultural Crops production - Perform Nursery Operation NC2

1. Classification of Weeds
Grasses-Monocotyledon, Narrow leaves
Sedges-Survives in wet areas
Broad leaves- Dicotyledon, Shrubs, Seeds inside of fruit

2. Methods of Fertilizer Application
1. Broadcasting—fertilizer is applied over the surface area

3. Side dressing—fertilizer is placed in– or in between the two
rows of crops.

4. Band or row or localized placement—fertilizer is applied in
bands to one or both sides of the seed or plant.

5. Foliar application—dissolving fertilizer in water and apply as
spray.

6. Fertigation—applying fertilizer with water in the soil.

7. The Parts of Plant Damaged by Pests:
Pest damage can be categorized according to the parts of the plant body attacked.
These are generally of six categories:
1. Sown Seeds and Seedlings:
The most common pests of this type are bean seed fly maggot, mice and other small
rodents which dig up freshly sown seeds. Many birds feed on the seeds sown in the field.
Dead heart disease caused by Scirpophaga incertulus.
2. Fruits and Seeds:
Cereal panicles sometimes have only a few grains developed, like sorghum infested with
sorghum midge larvae. Some fruits and seeds, including nuts, are bored by weevil larvae,
e.g., cotton boll weevil, hazel nut, mango weevil, etc.
3. Flower and Buds:
Blister beetles chew the petals of many plants. Anther eater pollen beetles are also
evident.
4. Leaves:
The leaf margin-notched, irregularly eaten, regularly cut away, leaf-holed, windowed,
skeletonized, galled, etc. are the regular activities of different larvae of insects and adult
molluscs.
5. Stems:
Stem borers are common examples in paddy, jute and vegetable plants.
6. Roots and Tubers:
Roots of economic importance, tubers, etc. are severely attacked by various pests.

9. Common insect pests in the nursery are:

10. Green leafhopper (Nephotettix virescens)

11. Rice case worm (Nymphula depunctalis)

12. Paddy stemborer (Scirpophaga incertulas)

13. Swarming caterpillar (Spodoptera mauritia)

14. Life Cycle

15. Common Plant Diseases
Damping Off

16. Powdery mildew

17. Wilting