Science · Plants, Natives & Crops

Rice

Rice is a staple grain grown in irrigated, rainfed, and upland systems. Water management influences growth and pest pressure.

Oryza sativa · Warm-season food cereal

Profile

Species scope: This profile concerns Asian cultivated rice, Oryza sativa.
Production systems: Rice is grown under irrigated, rainfed lowland, upland, and flood-prone conditions.
Establishment: Production methods include direct seeding and transplanting.
Pest monitoring: Rice water weevil adults leave longitudinal scars on leaves.

Water & soil context

Moisture (VWC): Lowland rice grows in saturated or flooded soil; upland systems require different management.
Salinity tolerance: Sensitivity varies with growth stage; the species account identifies seedlings as salt sensitive.
Drought tolerance: Rainfed systems require well-distributed rainfall or supplementary irrigation.

Illustrative monitoring-depth band

6–12 in

Editorial placement example, not a validated optimum or total rooting depth. Confirm the site's root distribution and soil horizons; multiple depths may be needed.

Manage water for the production system and crop stage rather than applying one flooding rule to all rice.

Problems to watch

Rice water weevil
Rice leafminer
Rice blast

Stress signs

Longitudinal leaf scars
Leaf mines fading from green to yellow or white
Spindle-shaped blast lesions

Where you'll find it

Staple food grain
Animal feed
Rice bran oil

Sources & scope

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All Science profiles

Published botanical and soil references are distinct from GroundWorx product guidance. Moisture thresholds and monitoring depths require site calibration; sources do not establish product performance or diagnose stress.