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Thursday / September 5. 2024
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The study covering an area of 477 million hectares spanning across India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka, identified and mapped 27 major cropping systems.

Scientists at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) recently released a study highlighting the role of geospatial maps and satellite data in shaping the future of food security. Focusing on South Asia, the research underscores how these advanced tools can significantly enhance agricultural productivity and sustainability.  The study covering an area of 477 million hectares spanning across India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka, identified and mapped 27 major cropping systems.

With only 6 annual harvests remaining before the 2030 Sustainable Development Goals (SDG) deadline, the need to sustainably intensify agricultural production has never been more urgent. Drylands, in particular, present a significant opportunity to enhance agricultural productivity and contribute to global food security.

“Dryland cropping systems are complex, shaped by biophysical, social, and economic factors. The use of geospatial products and satellite data for mapping these systems can be invaluable. These tools provide critical insights for decision-making, unlocking opportunities for increased production, and enhancing farmers’ incomes in these challenging environments,” said Dr Stanford Blade, Deputy Director General-Research at ICRISAT.

Highlighting the uniqueness of this research, Dr ML Jat, Global Research Program Director, Resilient Farm and Food Systems, stated “Predominantly, studies use spatial data to map single or major crops such as rice, wheat and sugarcane or to monitor crop intensity, natural vegetation and more.  This study is a trailblazer in understanding the entire cropping system, i.e., crops grown in a sequence over the entire year.”

“This data serves as a foundational layer and can be used in various ways to understand and improve agricultural performance. When combined with climate and soil data, it can aid in planning for resource optimization and enhancing agricultural productivity,” noted the study’s lead author, Dr Muralikrishna Gumma.

On a global scale, these geospatial maps provide essential data that can guide climate change mitigation efforts. At the national level, these data sets offer a detailed understanding of regional cropping patterns, enabling governments to optimize resource allocation. 

Geospatial mapping can inform policies that ensure the efficient distribution of resources like water, fertilizer, and seeds, based on the specific needs of different cropping systems. Additionally, these maps can be integrated into disaster management strategies, helping to identify areas vulnerable to agricultural stress, such as droughts or floods, and allowing for more targeted and effective responses.

The study Spatial Distribution of Cropping Systems in South Asia Using Time-Series Satellite Data Enriched with Ground Data (mdpi.com) was funded by the Japan Fund for Prosperous and Resilient Asia and the Pacific financed by the Government of Japan through the Asian Development Bank (ADB) and Mahalanobis National Crop Forecasting Centre (MNCFC), the Ministry of Agriculture and Farmers Welfare, Government of India, WRI Land & Carbon Lab grant convened by World Resources Institute, and the Bezos Earth Fund.  

The study covering an area of 477

Decentralised biochar production technology will be an affordable and viable option for farmers and Self-Help Groups (SHGs) to solve the issues around crop residues in a sustainable manner.

As global concerns over sustainable agriculture and climate change intensify, the use of biochar for soil amendment is increasingly gaining popularity because of its inherent properties that enrich the soil with nutrients and sequester carbon dioxide. These properties position biochar as a key player in agriculture’s shift towards net-zero emissions and in preventing soil degradation.

A recent study by ICRISAT scientists explores the design of an affordable, farm-level operable kiln for biochar production aimed at supporting smallholder farmers. The research paper also examines the properties of the biochar produced to better understand its applicability.

In her congratulatory remarks to the study’s authors, Director General of ICRISAT, Dr Jacqueline Hughes, underscored the significance of integrated solutions in accelerating our collective journey towards attaining the Sustainable Development Goals (SDGs).

“Biochar production not only solves the issue of managing crop residues, but its application in soil health, wastewater treatment and carbon farming opens up enormous opportunities to move towards a cleaner and greener future,” Dr Hughes shared.

According to the Ministry of New and Renewable Energy, Government of India, India produces over 500 million tons of agricultural residues annually, with about one fourth being burned (2017-2018). The incineration of these residues causes several health and environmental concerns. However, converting these residues into biochar presents a viable alternative, offering not just a method for managing this waste, but also the potential for additional revenue or cost savings for farmers. 

Dr ML Jat, Director, Global Research Program – Resilient Farm and Food Systems, ICRISAT emphasized the importance of adopting a decentralized approach to ensure that the process benefits the farmers.

“This low-cost, decentralized biochar production technology will be an affordable and viable option for farmers and Self-Help Groups (SHGs) to solve the issues around crop residues in a sustainable manner. Moreover, this technology also aligns well with government incentives for voluntary carbon markets and environmental initiatives like the ‘Mission Life-Lifestyle for the Environment program,'” Dr Jat noted.

The characteristics of biochar significantly depend on the type of crop residue used. In this study, two types of feedstocks—pigeonpea and maize stalk—were used to draw a comparison between the ICRISAT-designed pyrolysis kiln and a lab-scale muffle furnace.

The study also examined the physical and chemical attributes of biochar derived from the two feedstocks, using high-end imaging and analytical technologies such as Scanning Electron Microscopy (SEM), Fourier-Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analyzer (TGA).

Research reveals that biochar created in the portable kiln at 400°C exhibits a quality comparable to that produced in the muffle furnace. Further analysis shows that the biochar derived from pigeonpea and maize stalks contains total carbon percentages of 48.9 per cent and 41.9 per cent, respectively. Within these totals, the proportion of stable carbon stands at approximately 98.6 per cent for pigeonpea stalk biochar and 94.4 per cent for maize stalk biochar.

“Organic waste management methods like composting and mulching are efficient, yet thermochemical techniques, such as pyrolysis, offer distinct advantages, including quicker processing times and higher efficiency, particularly with dry residues,” Dr Gajanan Sawargaonkar, Senior Scientist, ICRISAT, and one of the study’s authors, remarked. 

Dr Sawargaonkar also highlighted that the data produced in the study will significantly contribute to the development of a holistic set of practices aimed at advancing sustainable agriculture.

Decentralised biochar production technology will be an