Abstract
Weeds pose a serious threat in achieving sustainable and profitable crop production. South Asia, as both a major food-producing and consuming region, needs a linear increase in food grain production. Among the several methods of weed management practice, herbicides are the most cost-effective and timely solution. Rice and wheat are the major staple food crops and the introduction of low-dose high efficacious herbicides, such as pyrazosulfuron-ethyl and sulfosulfuron in rice and wheat, respectively, have the major share in the [...]
Highlights
The United Nations project 60% of the global population will be found in Asia, in India and China by 2050
In India, glyphosate accounts for 37% of the active ingredient of the total herbicides used and almost 24% of it is being used in cereals, cotton, sugarcane, some fruits, and vegetables (Brookes, 2020)
The rotation of herbicides with a dissimilar mechanism of action is often recommended for effective weed control and delaying the development of herbicides
Summary
The United Nations project 60% of the global population will be found in Asia, in India and China by 2050. In India alone, an annual loss of more than USD 11 billion is estimated due to weeds in the 10 major crops (Gharde et al, 2018). The herbicide sector has accounted for USD 43.8 billion or 52% of the total pesticide market as the largest segment during 2019 (Sharma et al, 2019). It has been estimated that by the year 2025, global pesticide usage will increase up to 3.5 million tonnes (Zhang, 2018). The global usage of pesticides is approximately 2 million tonnes, out of which 47.5% are herbicides, 29.5% are insecticides, 17.5% are fungicides, and 5.5% are other pesticides (Sharma et al, 2019). The amount of herbicides used during the year 2019 in India, Bangladesh, Sri Lanka, Pakistan, and Nepal was around 9,749, 1,195, 716, 245, and 164 tonnes, respectively (Food and Agriculture Organization, 2020).
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