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Study points to quality issues in Bt Cotton seeds

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9 years ago

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Study points to quality issues in Bt Cotton seeds

[vc_row][vc_column][vc_column_text]Sunderarajan Padmanabhan

The controversy over poor ‘refuge’ for genetically modified cotton, known as Bt Cotton, has taken a new turn with a study showing that not only farmers but seed companies are responsible for the problem.

Conducted by Indian Council of Agricultural Research (ICAR)’s Nagpur-based Central Institute for Cotton Research (CICR), the study has found several lacunae: admixture of the refuge seeds with Bt seeds, poor germination of non-Bt seeds and asynchrony between the Bt and corresponding non-Bt refuge, in contravention of the regulatory guidelines. Researchers have published their findings in the latest issue of journal Current Science.

The purpose of refuge area in which non-GM cotton is grown is to delay the development of resistance in bollworms. The efficacy of refuge depends on the extent of simultaneous flowering and fruiting of the refuge and the main Bt crop. The Genetic Engineering Approval Committee (GEAC) had stipulated that a minimum of five border rows of conventional non-Bt Cotton hybrid of the corresponding Bt hybrid should be planted as refuge around Bt Cotton field. This norm was also subsequently amended to allow planting of pigeon pea as refuge crop. Seeds companies were required to provide a packet of 120 g non-Bt cotton seeds or 200 g of pigeonpea along with every packet of 450 g Bt Cotton seeds.

The study, conducted in 2014 and 2015, has found that seed companies have violated these norms. In the first year, 91 Bt Cotton seed packets were purchased from open market in North and Central India and a random sample of 10 seeds each from the main packet and the non-Bt refuge packet were drawn for the study. The seeds were first analysed to see what they contained. As many as 26 refuge packets had Bt seeds, when they should not have even a trace of them. Clearly there was an admixture of the refuge seeds with Bt seeds.

This was followed by a field trial. It wasconducted at the institute with 45 Bt-refuge seed pairs to study the level of germination and synchrony between them in flowering and fruiting.There was not much difference in terms of germination: all the Bt seeds had a germination of over 75 per cent, while 40 of the refuge had a germination of over 75 per cent and the balance five less than 25 per cent. However, when it came to flowering, for which 40 sets were assessed, there were issues: there was synchrony only in the case of 17 pairs.

In 2015, 30 seed packets were procured from the open market in Central India and studied. Here again 12 packets for refuge seeds were found to contain Bt seeds. On further study, while all the 30 Bt hybrids had a germination of over 75 per cent, only nine refuge seed had a germination of over 75 per cent.

Studies over the years have indicated that the refuge compliance was poor, leading to rapid development of resistance in pink bollworm for CryIAc and Cry2Ab toxins. So far, the blame was laid mainly on the farmers. It was thought that their ignorance of the need for refuge and reluctance to sacrifice land for non-Bt crops that would be vulnerable to bollworm was mainly responsible. The new findings change this.

The study also assumes importance in the context of a proposal to introduce a new concept called ‘refuge in bag (RIB)’ under which the farmers would be provided with a seed mix of 5 per cent non-Bt refuge and 95 per cent Bt seed in a 475 gm packet. The idea is to ensure that famers do not have the choice of avoiding refuge planting. But, it remains to be seen how far it will really help. For, with the present method of testing 10 seeds per packet, monitoring the correct percentage of non-Bt seeds in a bag of Bt seeds is likely to be difficult.

Source: India Science Wire

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PM Modi takes aim at critics with Dimagi Naxal remark at SRCC centenary address

PM Modi revived his dimagi Naxal remark at SRCC’s centenary celebrations and spoke about India’s development journey.

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1 hour ago

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September 6, 2026

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PM Modi

Prime Minister Narendra Modi revived his ‘dimagi Naxal’ remark while addressing the centenary celebrations of Shri Ram College of Commerce (SRCC) in Delhi on Saturday, using the term to criticise his opponents.

Speaking to students at the Delhi college, PM Modi described the phrase as a “homeopathic pill” and said it had prompted those he described as “dimagi Naxals” to come forward and reveal their views.

The prime minister also used his address to speak to Gen-Z about India’s development journey and asked students to consider the challenges the country had faced in the past.

PM Modi recalls past crises

During his speech, PM Modi referred to the 2013 Kedarnath disaster and the 2008 global financial crisis while criticising the handling of national emergencies by previous governments.

He said the government at the time of the Kedarnath disaster was shaken and questioned its ability to respond to the crisis.

Referring to the 2008 banking crisis, PM Modi alleged that the government of the time failed to effectively deal with the situation and claimed that India’s banking system was pushed close to collapse.

Prime minister lists challenges faced by his government

PM Modi also highlighted several major global crises that occurred during his government’s tenure.

He mentioned the COVID-19 pandemic, the Russia-Ukraine war, disruptions to global trade and supply chains, and the crisis in West Asia.

The prime minister said there had been concerns that India would struggle during these crises but argued that the country had continued to move forward.

PM Modi’s earlier SRCC visit

PM Modi had earlier visited SRCC in 2013, when he was the chief minister of Gujarat. His speech at the college received significant attention, particularly on social media, ahead of the 2014 Lok Sabha election.

His latest visit came during the college’s centenary celebrations, where his address focused on young people, India’s development ambitions and the challenges faced by the country.

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India Metro Rail Network May Overtake US in 2 Years

India’s metro rail network has reached 1,170 km across 26 cities. Union minister Manohar Lal said the country could overtake the US in network length within two years.

Published

16 hours ago

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September 5, 2026

By

Manohar Lal Khattar

India is on track to become the country with the second-largest metro rail network in the world after China, with Union Minister Manohar Lal saying the country could overtake the United States within the next two years.

India’s metro rail network has now expanded to 1,170 km across 26 cities. The network is only 216 km shorter than the US metro rail network, which stands at 1,386 km, according to figures cited by the minister.

India’s metro network expands rapidly

Speaking after the inauguration of an extended metro service in Indore, Manohar Lal highlighted the pace at which metro connectivity has grown in India.

He said metro services were operational across just 245 km in five cities when Prime Minister Narendra Modi assumed office in 2014. The network has since expanded to 1,170 km across 26 cities.

The minister said India could overtake the US in terms of metro rail network length in the next two years and become the world’s second-largest country in this segment after China.

China currently has around 8,000 km of metro rail lines, according to the figures cited by the minister.

Indore metro extension inaugurated

The minister made the remarks after inaugurating an extended section of the Indore metro. The project was built at a cost of around Rs 2,850 crore.

The Indore metro was earlier operating commercially on a six-km stretch between Gandhi Nagar and Super Corridor-3 stations. Following the extension, the service will operate on a 17-km route between Gandhi Nagar and Malviya Nagar Chauraha.

Madhya Pradesh Chief Minister Mohan Yadav said the metro service would mark a new phase in Indore’s development. He also said the network would eventually be extended to Ujjain and other nearby areas.

India’s metro rail network: Key figures

  • India currently has 1,170 km of operational metro rail network.
  • Metro services are operational across 26 cities.
  • The US has around 1,386 km of metro rail network.
  • India is currently 216 km behind the US.
  • China has around 8,000 km of metro rail lines.
  • India’s operational network stood at 245 km across five cities in 2014.

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PM Modi returns to SRCC after 13 years, revisits 2013 glass full speech

PM Narendra Modi returned to SRCC after 13 years for its centenary celebrations, revisiting themes from his landmark 2013 address.

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16 hours ago

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September 5, 2026

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PM Narendra Modi

Prime Minister Narendra Modi returned to Delhi University’s Shri Ram College of Commerce (SRCC) on Saturday, 13 years after his previous visit to the institution as Gujarat chief minister. 

His latest visit came as SRCC marked its centenary celebrations. Modi’s 2013 address at the college had attracted significant attention as he spoke about India’s youth, governance and the country’s demographic potential.

In 2013, Modi was Gujarat chief minister and had not yet been named the BJP’s prime ministerial candidate. He returned to the same campus this year as Prime Minister, having completed 12 years as Prime Minister and serving his third consecutive term. 

What PM Modi said at SRCC in 2013

The 2013 lecture was titled Emerging Business Models in the Global Scenario. The address also covered governance and India’s young population.

He described India’s youth as a source of national strength rather than simply a group of new-age voters. He also highlighted India’s demographic advantage and argued that the country needed to make better use of its young population.

One of the notable moments from the speech involved a glass of water.  Modi contrasted the conventional descriptions of a glass as half full or half empty and said he viewed it as full, with half containing water and the other half air.

The speech also included his remarks on technology and young Indians. Referring to an anecdote from a visit to Taiwan, Modi used the phrase “mouse-charmers” to describe Indians using computers and suggested that young Indians had the ability to influence the world through technology.

‘Minimum government, maximum governance’

Modi’s 2013 address also touched on governance. He spoke about the role of government and the need for better governance.

He also spoke about India’s potential in the 21st century. 

Modi returns as PM for SRCC centenary

The September 5 visit coincided with Teachers’ Day and SRCC’s 100th anniversary. The Prime Minister’s Office had announced that Modi would participate in the college’s centenary celebrations and address the gathering. SRCC was established in 1926 by industrialist and philanthropist Sir Shri Ram.

Earlier this year, Modi also met the SRCC governing body at his residence in April in connection with the college’s centenary celebrations and released a commemorative postage stamp marking the occasion. 

The return to SRCC came 13 years after his 2013 appearance at the college, when he addressed students as Gujarat chief minister.

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