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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.
Weed Control in Soybean Field
Herbicide
Before sowing seeds, it is important to handle the presence of various weeds in the idle fields, including grasses from the Poaceae family and broadleaf weeds, which vary in age and size. Failure to remove these weeds in time can lead to competition for nutrients with subsequent crops and also create potential hosts for pests and diseases, thereby causing harm to the young crops.
For example, in the case of planting second-season soybeans immediately after harvesting the previous crop, we need to directly sow the soybeans to adhere to the optimal planting time. Meanwhile, appropriate herbicides should be sprayed for effective field management. It is crucial to eradicate existing weeds and use control measures for weeds that have not yet germinated. Since the crop seedlings are very tender, the application of herbicides may inhibit their growth, so it is important to manage the timing of herbicide application between sowing and emergence.
Sunjoy Agro recommends using the combination of Glufosinate-P and S-Metolachlor for effective weed control.
Glufosinate-P, a non-selective herbicide, is known for its high efficacy, low toxicity, and environmentally friendly features. Its herbicidal activity is four times higher than Glyphosate and twice as high as common Glufosinate. Glufosinate-P is absorbed through the leaf surface, affecting vital processes such as photosynthesis, respiration, and cell division, directly and rapidly causing plant death. It also shows systemic properties by moving from leaves to roots to prevent weed regrowth. Glufosinate-P has a broad spectrum and can effectively eliminate more than 100 types of annual and perennial grasses and broadleaf weeds, including those that have developed resistance to Glyphosate.
S-metolachlor is a major pre-emergent selective herbicide for staple cereal crops like corn and soybeans, suitable for post-sowing, pre-emergence, or pre-transplant soil treatment. Its mode of action is to inhibit cell growth by obstructing the synthesis of long-chain fatty acids. It is absorbed by the coleoptiles and young shoots of emerging weeds, exerting its herbicidal effect. It can control annual grasses, some dicotyledonous weeds, and annual sedges, including barnyard grass, crabgrass, goosegrass, foxtail, cyperus, shepherd’s purse, amaranth, dayflower, and smartweed.
On May 22, 2024, researchers from Sunjoy Agro conducted a pre-emergence herbicide trial on soybeans in Yunlong Town, Zhejiang Province, using a mixture of Glufosinate-P 150g/L SL and S-Metolachlor 960g/L EC, with the dosage of 100mL + 20mL in 10L of water. Before sowing, the field remained unplowed, and the weeds were numerous and uneven (picture 1). The researchers sprayed the herbicide mixture after the sowing of soybean seeds. On May 29, the subsequent evaluation showed that most weeds were dead within one week of application (picture 2). By June 21, with the help of rain, the soybeans had emerged uniformly, and the field showed no noticeable weed presence (pictures 3 and 4). The trial demonstrates that the combination of Glufosinate-P and S-Metolachlor is a good solution for pre-emergence weed control in soybean fields.
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