The first program telecasted on Doordarshan, India's national public service broadcaster, was "Krishi Darshan". It was an agricultural program that aimed to educate and update farmers about the latest farming techniques, crop varieties, weather conditions, and other related topics.

Below is a detailed explanation of the answer:

Introduction to Doordarshan:
Doordarshan, also known as DD, is India's oldest and largest broadcasting organization. It was established on September 15, 1959, and has played a crucial role in shaping the Indian television industry. Doordarshan initially started with a few hours of programming and gradually expanded its coverage and services.

Importance of Krishi Darshan:
Krishi Darshan was an important program telecasted on Doordarshan as it focused on agriculture, which is the backbone of the Indian economy. The program aimed to disseminate information and knowledge to farmers across the country, helping them adopt modern farming practices and increase their agricultural productivity.

Objective and Content:
The primary objective of Krishi Darshan was to bridge the gap between traditional and modern farming techniques. The program provided farmers with valuable guidance on various agricultural topics, including crop cultivation, soil management, pest control, irrigation methods, and post-harvest techniques. It also featured interviews with agricultural experts, success stories of innovative farmers, and demonstrations of new farming equipment.

Impact and Reach:
Krishi Darshan gained immense popularity among farmers and played a crucial role in transforming Indian agriculture. The program was broadcasted in several regional languages, making it accessible to a wide audience. Farmers from remote areas and villages benefited greatly from the valuable information shared on the show. The success of Krishi Darshan led to the creation of other agriculture-related programs on Doordarshan.

Evolution of Doordarshan:
Since the telecast of Krishi Darshan, Doordarshan has grown significantly and diversified its programming. It now offers a wide range of shows covering various genres, including entertainment, news, sports, and educational content. Doordarshan has also expanded its reach through multiple channels and digital platforms.

In conclusion, the first program telecasted on Doordarshan was "Krishi Darshan," an agricultural program aimed at educating and updating farmers about modern farming techniques. This program played a significant role in revolutionizing Indian agriculture and bridging the gap between traditional and modern farming practices.