Q.106
Match List-I with List-II:
Choose the correct answer from the options given below:
|
List - I
सूची - I
List-I
|
List - II
सूची - II
List-II
|
||
|---|---|---|---|
| A | Avoid wounding Avoid wounding | I | *Pythium* spp. *Pythium* spp. |
| B | Certified seeds Certified seeds | II | *Fusarium* spp. *Fusarium* spp. |
| C | Good drainage Good drainage | III | Viruses Viruses |
| D | Spraying chemicals before harvesting Spraying chemicals before harvesting | IV | *Phytophthora* spp. *Phytophthora* spp. |
- Integrated Cultural and Chemical Disease Management:
- Pair-by-Pair Matching:
- Avoid wounding $\rightarrow$ (II) Fusarium spp.: Vascular wilt fungi (Fusarium oxysporum) penetrate roots through natural cracks or mechanical wounds made by cultivation tools and nematodes; avoiding root injury prevents infection.
- Certified seeds $\rightarrow$ (III) Viruses: Production and distribution of certified virus-free seed tubers/seeds is the most critical measure to manage seed-borne viruses.
- Good drainage $\rightarrow$ (I) Pythium spp.: Damping-off caused by Pythium zoospores requires free soil water; raised nursery beds and excellent drainage prevent spore motility and disease development.
- Spraying chemicals before harvesting $\rightarrow$ (IV) Phytophthora spp.: Late blight sprays on foliage before harvest kill sporangia, preventing tuber rot during lifting and storage.
- Correct Choice: Option 4 matches (A)-(II), (B)-(III), (C)-(I), (D)-(IV).
Correct option: (4) (A) - (II), (B) - (III), (C) - (1), (D) - (IV)
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