This document discusses variable rate technology (VRT) techniques for fertilizer recommendations. It defines VRT as using data and automation to apply inputs like fertilizer at different rates in different field locations. It describes the objectives of VRT as applying different fertilizer rates based on planned yield, soil fertility, and other factors. It outlines two types of VRT: map-based which follows a prescription map, and sensor-based which is real-time based on sensor data. It gives examples of VRT applications in agriculture like variable rate fertilizers, seeding, weed control, and irrigation. Finally, it lists benefits of VRT as achieving nutrient balance, potential yield increases, and fertilizer savings.

1. L.R.G.Deshmukh collage of
Agriculture, Tiosa
AGRO – 3612
Geo-Informatics and Nano-Technology and Precision Farming
-: TOPIC :-
VRT Techniques For Fertilizer Recommendations
By :- Anjali S.Rajurkar
SS – 1853
To :- Asst prof. Bhojne Sir

2. Contents :-
1. Definition Of VRT
2. Objectives Of VRT
3. Types of VRT
4. Applications through VRT Technology in
Agriculture
5. Benefits of VRT

3. 1. Definition of VRT
• VRT uses data and automation to apply fertilizer, crop protection
products, seeds and even irrigation water at different rates in
different locations without a grower having to change application
rates or make multiple passes manually.
• Variable rate technology in precision agriculture focuses on many
areas of crop production, including applying herbicides and
pesticides, lime, gypsum and other common crop nutrients, seeding
and detecting weeds and diseased crops.

4. 2. Objectives Of VRT
1. Variable-rate fertilizer application allows you to apply different rates
of fertilizer in each part of the field.
2. How you distribute fertilizer depends on the planned yield, soil
fertility and factors that influence it.
3. This might be topography, soil texture, electrical conductivity, as
well as soil nutrients and moisture content.

5. 3. Types of VRT
1. Map-Based VRA : -
The application follows a map, typically called a prescription map,
based on GPS coordinates. In a map-based VRA system
an agronomist creates the prescription map, commonly referred to as
a ‘script,’ and it is uploaded into the farmer’s data system. This
prescription map then informs a VRT-enabled piece of equipment,
such as a seeder, sprayer or spreader, of the application rates based
upon location

6. • 2. Sensor-Based VRA :-
Application is determined based on sensors that
inform the VRT-enabled system where and at what
rates to apply materials. Sensor-based VRA is
typically real-time, allowing a grower to react to
precise conditions at the time of
application. Sensor-based VRA is most commonly
used in irrigation applications, such as center pivot
irrigation systems with VRT capabilities.

7. 4. Application of VRT in Agriculture
1. Variable Rate Fertilizers
2. Variable Rate Seeding
3. Variable Rate Weed Control
4. Variable Rate Irrigation

8. 5. Benefits
1. Nutrient balance :- All areas of the field receive the
necessary. amount of fertilizer.
2. Potential increase in yields :- More efficient fertilizer doses
make increases more likely.
3. Save on the amount of fertilizer used:- Avoid
overspending in areas where nutrient removal is low.

9. VRT Methods Images

10. 🌱 THANK YOU 🌱