A microcapsule oil dispersion for the controlled release of 1-methylcyclopropene in an open environment

Xinyu Guo; Rui Zhao; Jia Zhang; Ying-Jie Du; Lu-Guang Yang; Luoyun Chen; Sen Pang; Yong Xu; Zhenhua Zhang; Xuemin Wu

doi:10.1039/c9ra03762d

A microcapsule oil dispersion for the controlled release of 1-methylcyclopropene in an open environment

RSC Adv. 2019 Jul 30;9(41):23465-23473. doi: 10.1039/c9ra03762d. eCollection 2019 Jul 29.

Authors

Xinyu Guo¹, Rui Zhao¹, Jia Zhang², Ying-Jie Du³, Lu-Guang Yang³, Luoyun Chen¹, Sen Pang¹, Yong Xu¹, Zhenhua Zhang¹, Xuemin Wu¹

Affiliations

¹ College of Science, China Agricultural University Beijing 100193 China zhangzhh@cau.edu.cn wuxuemin@cau.edu.cn +86 010 62734645.
² The Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs of the People's Republic of China Beijing 100125 China.
³ Laizhou Agricultural and Rural Bureau Laizhou Shandong 261400 China.

Abstract

1-Methylcyclopropene (1-MCP) is an important gaseous plant growth regulator. For its application as a gaseous pesticide, the plants with 1-MCP α-cyclodextrin microcapsule granules need to be enclosed in a sealed chamber. To provide a new spray formulation of 1-MCP for open environment application, herein, a novel 1-MCP microcapsule oil dispersion (1-MCP/MCOD) was prepared and characterized. It was found that 1-MCP could stay at higher concentrations for more than 36 hours during the controlled release experiment, and the SEM experiment showed good deposition of the 1-MCP/MCOD spray solution. In addition, the apple harvest application experiments showed that 1-MCP/MCOD could effectively prevent fruit drop at 3 μL L^-1 in an open environment. These results not only supply a new 1-MCP/MCOD kind of formulation for the flexible application of the 1-MCP gas in an open environment, but also show that this microcapsule oil dispersion formulation has significant potential in gaseous pesticide applications.