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Sunjoy Agro is one of China’s leading crop protection companies. It established business in 88 countries, with a global turnover of US$300 million.
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We believe innovation is the answer to today’s agricultural challenges.
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We provide plant protection and plant nutrition products that help build healthy and sustainable food systems.
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Sunjoy Agro implements the concept of sustainability development throughout the corporate mission, philosophy and strategy.
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Case Studies
We provide plant protection and plant nutrition products that help build healthy and sustainable food systems.
Control Corn Aphid by Dinotefuran
Insecticide
Corn (Zea mays), also known as maize, is a cereal plant of the grass family (Poaceae) and its grain is a staple food. The domesticated crop originated in the Americas and is among the most widely distributed food crops globally. Corn serves various purposes, including use as livestock feed, human food, biofuel, and raw material in industrial processes.
The history of corn is fascinating. It was first domesticated by indigenous peoples in southern Mexico around 10,000 years ago. The ancestor of modern corn is a wild grass called teosinte. Through generations of selective breeding, ancient farmers transformed teosinte into the corn we know today, characterized by traits like larger and sweeter kernels. The main areas for corn cultivation are primarily the United States, China, and Brazil.
Many industrial and feedstock varieties of corn are genetically modified organisms (GMOs) engineered for resistance to the herbicide Glyphosate or for the production of proteins from Bacillus thuringiensis (BT) to kill specific insect pests. In addition, some strains have been genetically engineered to enhance drought tolerance and increase their nutritional value. Most of the corn grown in the United States is GMO, which may reduce the need for herbicides and insecticides.
The main growth stages of corn are as follows:
- Germination: This is the initial stage where the corn seed absorbs water and begins to sprout. It typically takes 5-10 days for the seed to germinate, depending on soil temperature and moisture
- Seedling Stage: After germination, the corn enters the seedling stage, which lasts about 2-3 weeks. During this phase, the plant develops its first true leaves
- Vegetative Stages (V1 to VT): These stages involve the development of leaves and the stalk, with divisions based on leaf count.
- Reproductive Stages (R1 to R6): This period begins with silk emerging from the husks and concludes when the kernels reach full maturity and dry down
During the whole life cycle, corn crops are susceptible to many diseases and pests. Common diseases include leaf blight and rust, while pests include leps and aphids.
Neonicotinoid insecticides are widely used for aphid control. In 2024, Sunjoy Agro conducted field trials in China to test the control efficacy of Dinotefuran 70% SG, diluted at a rate of 1000 -3000 times. Three days after application, the control efficacy was about 100%. This product exhibits quick action and provides a longer duration compared to other pyrethroid pesticides, with a minimum effective duration of 10 days. Sunjoy Agro recommends Dinotefuran as a very good tank-mixture partner when extended duration is required.
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