The adjuvant effects of rosin and coconut oil on nicosulfuron and mesotrione to control weeds
| Autor: | Xin Qiao, Wei Zhang, Jingao Dong, Shujie Ma, Ran Jia, Ziping Zhu, Luwei Liu, Lihui Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
food.ingredient
Pyridines Health Toxicology and Mutagenesis medicine.medical_treatment Rosin Environmental pollution Mesotrione Toxicology chemistry.chemical_compound food medicine GE1-350 Abietic acid Adjuvant Adjuvants Pharmaceutic Surface tension biology Cyclohexanones Coconut oil Fresh weight Public Health Environmental and Occupational Health Digitaria sanguinalis General Medicine biology.organism_classification Pollution Environmental sciences Sulfonylurea Compounds TD172-193.5 chemistry Coconut Oil Herbicide Resins Plant medicine.drug |
| Zdroj: | Ecotoxicology and Environmental Safety, Vol 225, Iss, Pp 112766-(2021) |
| ISSN: | 1090-2414 |
| Popis: | Natural adjuvants are novel options to reduce the doses of chemical herbicides. The aim of the current study was to examine the compositions and adjuvant effects of rosin and coconut oil on herbicides using a combination of indoor experiment and field trial. The GC-MS results showed that the main component of rosin was abietic acid (40.02%), and the main components of coconut oil were 2-pentanone, 4-hydroxy-4-methyl- (21.45%) and dodecanoic acid (14.59%). In greenhouse experiment, rosin showed a significant adjuvant effect on nicosulfuron against Digitaria sanguinalis and Amaranthus retroflexus, with the GR50 ratios of 1.47 and 1.69, respectively. The GR50 values of nicosulfuron in the present of coconut oil were 3.99 and 10.13 g a.i./hm2 against D. sanguinalis and A. retroflexus, lower than that of individual application. The adjuvant effect of rosin and coconut oil on mesotrione was also found. In field trial, the fresh weight control efficiency of nicosulfuron (45 g a.i./hm2) and mesotrione (112.5 g a.i./hm2) was significantly improved after the addition of rosin and coconut oil, similar with that of recommended dose. Rosin and coconut oil could reduce the contact angle of nicosulfuron, with the results of 56.68° and 53.90°, respectively, lower than that of individual application. Furthermore, rosin and coconut oil could decrease the surface tension, wetting and penetration time; and increase the spreading diameter and maximum retention. Both rosin and coconut oil have adjuvant effects on herbicides in the lab & field with multiple mechanisms. Thus, they have the potential to be developed into natural adjuvants for herbicide formulation to control weeds. |
| Databáze: | OpenAIRE |
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