# Knowledge base

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Title | Crop / topic | Usage (30d) | Status | Actions
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Diagnosing nitrogen deficiency in rice | Rice · Nutrients | 42 views | Published |
Managing stem borer in corn (field visits) | Corn · Pests | 28 views | Review |
Basic drip irrigation scheduling for vegetables | Vegetables · Irrigation | 15 views | Draft |

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- Common gaps: region‑specific pest management and localized market info.

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- Nutrient management for rice after flooding.
- Quick reference for SMS‑friendly pest diagnostics.

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Content Sample content explaining how to distinguish nitrogen deficiency from disease symptoms.

##### Diagnosing nitrogen deficiency in rice

Rice · Nutrients · Published · Last updated 5 days ago

When to suspect nitrogen deficiency

Leaves turning pale green to yellow from the older leaves upward, especially after heavy rains or poor fertilizer application.

Basic checks

- Confirm fertilizer rate and timing used this season.
- Inspect fields for waterlogging or poor drainage.
- Compare affected and unaffected areas within the same field.

Simple recommendations

- Consider split application of nitrogen where appropriate.
- Combine with improved water management and drainage.