In November 1960, Chalam was head hunted to join the Ministry of Food and Agriculture in the Union Government as the Deputy Agricultural Commissioner. In this capacity, he organised several seed production and training programmes in the country in collaboration with the
Rockefeller and
Ford Foundations. Chalam was one of the main draftsmen of the Seed Law for India which came to be known National Seed Act (1966). In 1963, Chalam was appointed as the first general manager of the National Seeds Corporation and established the first ever chain of Breeder-Foundation—Certified seed farms in India to produce high quality seeds to the farmers. This was the beginning of the certified seed programme which was to play a key role in ushering the Green Revolution in India in the late 60s. Dr. Chalam was the first Member-Secretary of the Central Variety Release Committee which is the forerunner of the Statutory Central Seed Committee. After the expiry of his term as the general manager of the National Seeds Corporation, Chalam was appointed to the
Indian Council of Agricultural Research (ICAR) in 1964. On his way back from attending an International Seed Testing Seminar in New Zealand, Chalam visited the
International Rice Research Institute at
Manila of his own initiative and expense and selected the Taichung Native-I (TN-1) as one of the most promising Indica varieties that could thrive in India. Chalam could get only one kilogram of seed of this variety and with the approval of the ICAR, he carried out trials at four places which gave outstanding results beyond all expectations.[https://web.archive.org/web/20081217012954/http://www.irri.org/publications/chandler/pdfs/chap4a.pdf This brought new vistas in rice production in India. Despite criticism by many Indian agricultural scientists and scepticism of United Nations agencies and the World Bank officials regarding the characteristics of the variety and the ability of the Indian farmers to embrace new cultivation techniques, Chalam was undeterred and carried out trials of TN-1 in many small farms, mainly in the states of
Orissa, Andhra Pradesh,
West Bengal, Western
Uttar Pradesh, Haryana and
Punjab. TN-1 proved to be an outstanding variety. At a time, when yields of 6000 to . per acre were a rare occurrence, with TN-1 it became a common occurrence in India. As one who introduced this high yielding variety in the country, Chalam successfully sponsored the release of TN-1 before the statutory Central Variety Release Committee in January 1966. Later he carried on an intensive seed production programme of TN-I in about in the second crop season of 1965–68 and made it possible to supply the seed for planting one million acres (4,000 km2) for '
Kharif' (crop season during June–December) in 1966. Thus, beginning with one kilogram of seed of TN-I, Chalam built up a huge stock of certified seed for one million acres (4,000 km2) which, even though considered as an impossible venture at one time, had become a practical achievement. Unfortunately 1965 was the year when India was affected by very severe drought conditions. Large-scale food shortages were imminent. Prime Minister
Lal Bahadur Shastri coined the slogan
Jai Jawan Jai Kisan to encourage the farmers to produce more and at the same time called upon the countrymen to miss one meal every week to conserve the dwindling food supplies. At a time when there was widespread despair amongst the farming community, Chalam persuaded the farmers to cultivate drought resistant TN-1 and staved off what certainly would have been another catastrophic famine in India. Dr. Chalam rejoined the National Seeds Corporation as its managing director. Although Chalam became well known for the propagation of TN-1 rice, Chalam also played a key role in facilitating the introduction and popularisation of high yielding 'Mexican' dwarf wheat varieties and hybrid maize and groundnut varieties into India. During his stewardship, the National Seeds Corporation of India became a model public sector undertaking both for achieving financial results and for achievement of long-term social objectives. In recognition of this enduring contribution to agricultural development of the country, Dr Chalam was awarded
Padma Shri in April 1967 by the Government of India. Unfortunately a month later, on 8 May 1967, Dr G V Chalam suddenly died following a heart attack leaving behind a wife and eight children. The Government of India released a commemorative stamp on 8 May 2010. ==Writing==