Agronomist dictionary

Weather and climate

Radiation balance

Radiation balance is the difference between the total solar radiation absorbed by the earth's surface and the effective outgoing radiation emitted by it.

Weather and climate

Relative humidity

It is the ratio of the actual amount of water vapor in the air to the maximum amount the air could hold at a specific temperature, expressed as a percentage.

Growth and development

Remontancy

The ability of plants to produce multiple crops or bloom continuously throughout a single growing season.

Digital farming

Remote field monitoring

A set of technologies involving satellite imagery, aerial photography, or drones to observe and analyze crop conditions and field development remotely.

Digital farming

Remote Sensing of the Earth

This is a method of gathering information about crops and soil conditions using satellites, drones, or aircraft without direct physical contact with the field.

Breeding and seed production

Reproduction

This is a successive generation of seeds or planting material obtained during the process of seed production from initial plant forms.

Breeding and seed production

Reproduction sowing

A method of sowing elite or high-generation seeds to produce quality seed material for future cycles while preserving the variety's specific traits.

Growth and development

Reproductive phase

The developmental stage of a plant during which reproductive organs are formed, leading to flowering, pollination, and seed or fruit development.

Sowing and varieties

Reseeding (gap filling)

An agronomic practice of sowing additional seeds in areas with thin or failed emergence to achieve the optimal plant population density.

Crop protection

Residual activity period

The duration of time during which a pesticide remains biologically active to protect crops against target pests or diseases.

Crop protection

Residual effect

The impact of fertilizers or pesticides applied in previous seasons on the current crop growth and soil characteristics.

Storage and economics

Residual moisture

The amount of water remaining in soil or agricultural produce after natural drying, evaporation, or drainage processes have occurred.

Growth and development

Respiration rate

Respiration rate is the speed at which a plant or harvested produce consumes oxygen and releases carbon dioxide through metabolic processes.

Crop protection

Retardant

Retardants are plant growth regulators that inhibit stem elongation, helping to produce shorter, thicker, and stronger stems to prevent lodging.

Breeding and seed production

Roguing

The practice of identifying and removing off-type plants, diseased individuals, or weeds from a crop to maintain genetic purity.

Nutrition and fertilizers

Root exudates

These are organic compounds released by plant roots into the soil, creating a nutrient-rich environment for beneficial soil microorganisms.

Nutrition and fertilizers

Root feeding

This is a method of applying fertilizers directly into the soil within the reach of a plant's root system.

Nutrition and fertilizers

Root nutrition

Root nutrition is the process by which plants absorb water and essential mineral nutrients from the soil through their root system.

Growth and development

Root pressure

The active force generated by plant roots that pushes water and dissolved minerals upward through the xylem vessels, ensuring nutrient transport independently o...

Nutrition and fertilizers

Root system

The entire network of roots belonging to a single plant, responsible for anchoring the plant in the soil and absorbing water and essential nutrients.

Sowing and varieties

Row spacing

The distance between adjacent rows of plants during sowing or planting, measured between the center lines of the rows.

Machinery and irrigation

Row spacing

The distance between adjacent rows of plants in a field or crop plantation.

Machinery and irrigation

RTK Base Station

A terrestrial receiver that transmits corrections to agricultural machinery to enable centimeter-level accuracy for satellite navigation systems.

Digital farming

RTK signal

RTK (Real Time Kinematic) is a satellite navigation technique that enhances the precision of position data, enabling agricultural equipment to operate with cent...