Farming System with Minimum or No Use of Chemicals:
The type of farming system with minimum or no use of chemicals is known as organic farming. Organic farming is a sustainable and environmentally friendly approach to agriculture that focuses on utilizing natural methods and processes to cultivate crops and raise livestock. It avoids the use of synthetic fertilizers, pesticides, and genetically modified organisms (GMOs), relying instead on techniques such as crop rotation, composting, and biological pest control.

Basic Selection of Crops for Organic Farming:
When selecting crops for organic farming, several factors need to be considered. Here are the basics of crop selection for organic farming:

1. Soil Suitability: The first consideration is the suitability of the soil for the selected crops. Different crops have specific soil requirements, such as pH level, nutrient content, and drainage capacity. Assessing the soil's suitability helps ensure optimal growth and productivity.

2. Climatic Conditions: Crops should be selected based on the prevailing climatic conditions of the region. Factors such as temperature, rainfall, and sunlight availability play a crucial role in determining crop suitability. Choosing crops that are well-adapted to the local climate helps maximize yields and reduce the risk of crop failure.

3. Pest and Disease Resistance: Opting for crop varieties that are naturally resistant to pests and diseases is essential in organic farming. Such varieties have built-in mechanisms to withstand attacks from insects, fungi, and other pathogens, reducing the reliance on chemical pesticides and fungicides.

4. Diversity and Crop Rotation: Maintaining crop diversity and implementing regular crop rotation is vital in organic farming. Growing a variety of crops helps break pest cycles, improves soil fertility, and reduces the risk of soil-borne diseases. Crop rotation involves alternating different crops in a specific sequence to optimize nutrient utilization and minimize pest pressure.

5. Market Demand: Considering the market demand for the selected crops is also crucial. Farmers should choose crops that have a high demand and can fetch a good price in the market. This aspect ensures economic viability and profitability for the farmers.

Possible Reasons for Village Elders Appreciating Ravi's Explanation:
1. Increased Understanding: By explaining the scientific reasons behind the traditional farming practices, Ravi helped the village elders gain a deeper understanding of the concepts. This knowledge empowers them to make informed decisions and adapt their farming methods accordingly.

2. Enhanced Productivity and Sustainability: Understanding the scientific rationale behind organic farming practices allows the village elders to implement them more effectively. By utilizing natural methods and minimizing chemical inputs, they can enhance productivity while maintaining the long-term sustainability of their farming systems. This can lead to improved crop yields, better soil health, and reduced environmental impact.

Overall, Ravi's explanation bridged the gap between traditional knowledge and scientific understanding, enabling the village elders to harness the benefits of organic farming more gainfully.

The types of farming is organic farming.the basic of growing drop by seasons. so for these two reasons Ravi gets appreciation