Latest news with #TNAU
The Hindu
22-07-2025
- Science
- The Hindu
TNAU awarded patent titled ‘Nano Emulsion Based Botanical Herbicide and Preparation Method Thereof'
Tamil Nadu Agricultural University (TNAU) has been awarded a patent on Nano herbicide by the Controller of Patents, Patent Office, Government of India. The patent titled 'Nano Emulsion Based Botanical Herbicide and Preparation Method Thereof' was the outcome of research work carried out at the Centre for Agricultural Nanotechnology for the development of a novel form of herbicide using naturally-produced allelopathic chemicals derived from Eucalyptus citriodora. According to the inventors N. Swathika, K. S. Subramanian and S. Marimuthu, eucalyptus plants produce volatile metabolites that inhibit the neighbouring plants in the natural ecosystem. The fallen leaves surrounding the trees release a wide array of terpenoids especially eucalyptol and citronellal. Since these compounds are highly volatile in nature, efforts were undertaken to develop nano-system to encapsulate them in a micelle with a guar gum as a biopolymer. The product was developed using two-step process involving high pressure homogenisation and ultra sonication. This bio-nano-herbicide has both pre-emergence and post-emergence herbicidal action against a notorious grassy weed Echinochloa crusgalli. There was a pre-emergence control of weed seeds at 1000 ppm (parts per million) while highest post-emergence toxicity was observed at 1% spray of nano-emulsion, the researchers explained.
The Hindu
12-07-2025
- Health
- The Hindu
In novel initiative, coconut farmers in Pollachi deploy climate sensors to explore alternative crops
In a first-of-its-kind initiative in Tamil Nadu, a cohort of coconut farmers from the Pollachi region in Coimbatore district has deployed a technology-based field monitoring system to record climatic conditions and assess crop suitability. Their urgency is the growing threat of Root Wilt Disease affecting their crop. While not a direct intervention against the disease, the initiative is aimed at generating consistent weather data to explore alternatives to coconut cultivation, which farmers fear may not be viable in the future. Farmers from the Anamalai block, as well as the Pollachi South and North blocks, have come together to install real-time climate monitoring systems that track temperature, humidity, rainfall, and solar radiation. The systems are expected to provide location-specific data to guide cropping patterns and land-use decisions in the future. One lakh trees removed According to Tamil Nadu Agricultural University (TNAU) in Coimbatore, the three blocks collectively have an estimated 75 lakh coconut trees. Of them, 10 lakh are affected by Root Wilt Disease, 3.5 lakh are severely affected, and nearly 1 lakh trees have been removed. M. Raveendran, Director of Research, TNAU, said Root Wilt Disease has no known cure, and the only effective management strategy is the removal of infected trees to limit its spread. The disease is caused by a phytoplasma — a wall-less, bacteria-like micro-organism that lives in the phloem tissue of plants and is transmitted by vectors such as leafhoppers and whiteflies. It was present for long, but its spread has accelerated in recent years owing to changing climatic conditions that favour vector survival and transmission. Once infected, a tree suffers progressive root dysfunction, leading to reduced water and nutrient absorption, yellowing and narrowing of leaflets, stunted canopy development, and declining nut yield. If not removed, infected trees pose a threat to surrounding healthy ones through root contact and vector activity. Farmers have expressed concern that, if unchecked, the disease may make coconut cultivation unviable. M.K. Gokulakrishnan, who manages a 60-acre coconut farm in Pollachi, said, 'I've had to remove around 150 trees. If this continues, it will seriously affect livelihood. Coconut is the principal crop here, and the consequences could be severe.' 'To sustain the livelihood of farmers, alternative crops must be identified and introduced before the situation worsens,' said M.P. Vijayakumar, Vice-Chairman, Tamil Nadu State Council for Higher Education, and a retired IAS officer, who is also a farmer. He is spearheading the effort to ensure that Pollachi does not remain dependent only on coconut. 'The broader aim is to promote crop diversification and establish Pollachi as a zone for fruits and spices. For this, continuous tracking of temperature, humidity, sunshine, and rainfall is considered essential for assessing crop suitability across micro-climatic zones,' he added. 'Without any government support, we initiated this effort to generate field-level climate data to guide crop planning,' Mr. Vijayakumar said. Low-cost sensors The system, developed by Bengaluru-based Phytec, uses low-cost, solar-powered, sub-gigahertz sensors placed at one-kilometre intervals. These units record environmental parameters and transmit the data through a network to a central gateway, which uploads them on cloud servers. The network operates independently of the mobile phone network and is being piloted in farms in Kottur village. TNAU has agreed to analyse the collected data to assess the impact of climatic conditions on crops and recommend alternatives. Mr. Raveendran said the university is supporting the initiative as farmers have played a proactive role. The coconut-growing area in the three blocks exceeds 50,000 hectares, with distinct climatic variations. Accurate, location-specific data, he said, would help targeted interventions. He added that protecting the existing trees is the immediate priority, given the scale of the coconut-based value chain, including coir and allied sectors. TNAU is evaluating Cococon, an injectable formulation on field trial, testing new chemical treatments to improve productivity, and supplying wilt-resistant varieties. It is also assessing the suitability of fruit and spice crops to support long-term diversification in the region. Mr. Raveendran said 16 farmers in the Anamalai block have come forward to install the devices and added that further adoption would be supported with government intervention.
NDTV
26-06-2025
- General
- NDTV
Tamil Nadu Agricultural University 2025 Rank List Released, Direct Link Here
TNAU Rank List 2025: The Tamil Nadu Agricultural University (TNAU) and Annamalai University (Faculty of Agriculture) has released the provisional rank list for admission to its Undergraduate (UG) courses for the academic session 2025-26. Candidates who applied for admission can check the provisional merit list on the official website, TNAU Rank List 2025: How To Download Rank List? Visit the official website, On the homepage, click on "UG and Diploma Admissions 2026". A new page will open. Click on "View Rank Lists". Then, select the TNAU Undergraduate Admissions 2025-26 General Rank List. The rank list will be automatically downloaded. Save the list for future reference. Students can download the merit list directly here, " TNAU General Merit List". The TNAU rank list includes details such as the General Rank of the candidate, their application id, name, community, Aggregate and the community rank. The candidate belongs to a community that includes Most Backward Classes (MBC), Scheduled Castes (SC), Backward Classes (BC), and other communities recognized in Tamil Nadu.
Hindustan Times
26-06-2025
- General
- Hindustan Times
TNAU rank list 2025 released at tnau.ac.in, direct link to download
Jun 26, 2025 08:59 AM IST TNAU Rank List 2025: The Tamil Nadu Agricultural University, TNAU, and the Annamalai University (Faculty of Agriculture) have released the rank list for undergraduate admissions, 2025. Candidates can download the TNAU rank list 2025 from the official website at TNAU rank list 2025 out at website, screenshot) Also read: CBSE Class 10 board exam twice a year from 2026, all students must take 1st exam The rank list has been released separately for different categories – general, sports quota, government school quota, etc. The rank list has been published in the form of a PDF and therefore, candidates do not need to use any login details to download it. TNAU Rank List 2025: Direct link to download TNAU Rank List 2025: Steps to download Candidates can download the TNAU Rank List 2025 by following the steps mentioned below: Go to the official website, Click on the view rank lists tab. Open the rank list download link for your category. Download the PDF and check your selection status using your application ID or name. Also read: CSIR NET 2025 extended registration window closes today, apply at For queries and support regarding undergraduate admissions, candidates can email at ugadmissions@ or call the mobile numbers 09488635077 / 09486425076. For more information, candidates can visit the official website of TNAU.
News18
25-06-2025
- General
- News18
TNAU Rank List 2025 Releasing Today, Check Steps To Download At tnau.ac.in
Last Updated: TNAU Rank List 2025: Candidates who have registered can check and download the rank list as soon as the link is activated on the official website at The Tamil Nadu Agricultural University (TNAU) is set to declare the TNAU Rank List 2025 today, June 25, for undergraduate course admissions for the 2025–26 academic year. Candidates who have registered can check and download the rank list as soon as the link is activated on the official website at They will need their application number to access the rank list online. Step 3: Enter your login credentials such as your application number. Hit submit Step 4: The TNAU Rank List 2025 will be displayed on the screen in a PDF
