Abstract
China has implemented a series of policies to reduce the usage of chemical pesticides to maintain food production safety and to reduce water and soil pollution. However, there is still a huge gap in developing biological pesticides to replace chemical agents or managing pests to prevent crop production loss. It is necessary to predict the future use of chemical pesticides and to exploit the potential ways to control pests and crop diseases. Pesticide usage is affected by seasonal changes and analyzed by using a seasonal autoregressive integrated moving average (ARIMA) model (a statistical model that predicts future trends using time-series data). The future development of biopesticides in China was predicted using the compound annual growth rate (CAGR), which is calculated via the equation [(Final value/Starting value)1/years – 1] according to the annual growth rate of target products over time. According to the reducing trend of pesticide and biological pesticide usage annually, China is predicted possibly step into the era of pesticide-free agriculture in 2050 based on the analysis of the ARIMA model. With CAGR calculation, China will produce from 500 thousand to one million tons of biopesticides in 2050, which can meet the need to replace chemical pesticides in agriculture to prevent the present crop production loss. To achieve the goal, China still has the greatest challenges to develop biopesticides and use various strategies to control pest and crop diseases. China may step into the dawn of chemical pesticide-free agriculture in 2050 if biopesticides can be developed smoothly and pests can be controlled well using various strategies.
Introduction
As an important means of production, pesticides play an important role in controlling pest damage and increasing crop yield. However, the long-term application of a large number of chemical pesticides not only brings serious environmental pollution problems but also affects the quality and safety of agricultural products and biodiversity and affects the sustainable development of human society. Cyfluthrin is in a group of man-made insecticides and is widely used in homes, outdoors, and in agriculture to effectively control phytophagous insect pests (). β-Cyfluthrin induces acute arrhythmic cardiotoxicity through interaction with NaV1.5, and ranolazine reverses the phenotype (). Fomesafen is an organic compound used as a herbicide (). Water-solubility of fomesafen leads to a potential risk to groundwater, and it has been reported that the death of fish is related to fomesafen (). Pyraclostrobin is an agricultural pesticide product used to kill most fungi, including blights, mildews, molds, and rusts (), and has characterized lethal toxicity (). Pesticide consumption primarily threats biodiversity and causes its significant decline ().
By linking pesticide usage reports from Chinese statistical yearbooks, this study shows that pesticides adversely affect health outcomes via drinking water exposure. A difference-in-difference-in-differences framework to compare health outcomes between people who drink surface water and groundwater in regions with different intensities of rice pesticide use before and after 1 year indicated that a 10% increase in rice pesticide use unfavorably altered a key medical disability index (activities of daily living) by 1% for rural residents (). It has been reported that more than 150 million miles of China’s farmland are contaminated (). Since the discovery of dichloro-diphenyl-trichloroethane (DDT) and hexachlorocyclohexane (BHC), their excessive and persistent application has led to severe environmental pollution and human health risks (). Even so, the application of chemical pesticides is still the major method to protect crops from yield loss (). In contrast, biopesticide sources are easily obtained in nature, are naturally biodegradable, act in different modes, and possess less toxicity to live organisms (). It is imperative to reduce the amount of chemical pesticides and replace them with biological pesticides ().
To feed 20% of the world’s population with only 7% of the world’s arable land, China has a heavy reliance on chemical pesticides to maintain high-level crop yields and long-term capital gains (). China has become the world’s largest consumer of chemical pesticides. Unfortunately, in the past few years, pesticide pollution in the air, water, and soil and deaths caused by pesticides have been serious in China (; ). Pesticide poisoning often happens when chemical pesticides are used to control a pest and affects humans (), wildlife (), plant (), or beneficial insects (). Although the effects of pesticide poisoning have been remarkably controlled, the number of fatal cases is still high due to the largest population in China. It is necessary to explore the future change under the new policies. Chemical pesticide consumption is affected by seasonal varieties (). According to the reducing trend of pesticide usage annually, a seasonal autoregressive integrated moving average (ARIMA) model (a statistical model that predicts future trends by using time-series data) will be suitable to predict chemical pesticide consumption in the future. Reducing chemical pesticide consumption has become a solid goal shared by many countries and a major issue in public policies due to its high risk to human life and negative impacts on the environment. Pesticide-free agriculture has become a new paradigm for research ().
As early as 2015, China launched the “Action Plan to Realize Zero Growth in Pesticide Use by 2020” and completed this goal ahead of schedule in 2017 (). With the support and encouragement of national policies, a large number of high-efficiency, low-toxicity, low-residue, and low-risk pesticides have also been quickly created, applied, and promoted, and biological pesticides have gradually risen and received more and more attention. There were 115 biological pesticide active ingredients, and more than 3,800 registered formulated products in China before 2018, including five different types of biopesticides, including microbial pesticides, botanical pesticides, biochemical pesticides, natural enemies, and agricultural antibiotics (). The top five microbial pesticides in China include Bacillus thuringiensis (), Bacillus subtilis (), Helicoverpa armigera nuclear polyhedrosis virus (), Metarhizium anisopliae (), and Paenibacillus polymyxa () according to the production output.1 To protect human health and achieve high-level crop yields, biopesticides should be further developed in the future. Its changes were also calculated in this study to explore its possible products meeting sustainable agriculture development.
Methods
Data collection and analysis
The data for pesticide consumption in China were obtained from the National Bureau of Statistics,2 the previous publication (; ; ), and Internet data3 (Supplementary Table 1).
A seasonal autoregressive integrated moving average model for forecasting chemical pesticide consumption in China in 2050
Time series analysis is a vital branch of statistics, has the basic principles of mathematical statistics, and can support a series of scientifically dynamic data processing approaches (). It is a scientific method with strong applicability that has developed rapidly based on probability theory and mathematical statistics and is supported by computer applications. A time series is a sequence of random variables formed by variables in the order of time intervals. A large number of statistical indicators in the fields of nature, social economy, etc., are counted by year, quarter, month, or day. Pesticide use has striking seasonal variability () and will be fitted to be analyzed using a seasonal model. Time series analysis of variables is often carried out using the seasonal ARIMA approach (). ARIMA model is a statistical model that is autoregressive if it forecasts future values according to previous values. The seasonal ARIMA model extends an ARIMA model by taking seasonality into account (Supplementary material). Agricultural chemical pesticide forecasting in China was performed using an approach to the seasonal ARIMA (p,d,q) × (P,D,Q)S model according to a previous report with slight modification (Figure 1; ).
FIGURE 1
The compound annual growth rate for forecasting future growth rates of biopesticide consumption in China until 2050
Besides the above harmful effects on human health and threats to human life, the costs to develop a synthetic agricultural chemical has been increased more than 200-fold from 1956 to 2016 (
Results and discussion
China achieved zero growth in chemical pesticide consumption since 2014
Chemical pesticide consumption in China from 1991 to 2021 mainly includes fungicides, herbicides, and insecticides, and among them, herbicides occupy more than 60% of all pesticides (Figure 2). Chemical pesticide consumption in China has increased from 76 million tons in 1991 to 146 million tons in 2006 (
FIGURE 2

Chemical pesticide consumption in China from 1991 to 2021. Pesticides include fungicide, herbicide, and insecticide.
China may step into the era of chemical pesticide-free agriculture in 2050
Time series analysis and diagnostics show that the chemical pesticide consumption has significant seasonal parameters in the trend for the ARIMA model (Figure 3A). A seasonal model will be helpful to predict future changes in pesticide consumption. From 2003 to 2021, the consumption of pesticides was lowest in 2003, increased in 2004, and reached the highest level in 2012. The consumption of pesticides showed a declined trend until 2021 since 2012, and the reduction in pesticide consumption was reduced by more than 30% (Figure 3A). Pesticide use has striking seasonal variability (
FIGURE 3

A seasonal ARIMA model for time series forecasting in the chemical pesticide consumption in China in 2050. (A) The chemical pesticide consumption in China from 2003 to 2021. (B) Forecasting data are approved using the observed data. (C) The chemical pesticide consumption will reach zero by 2050 based on the seasonal ARIMA model. Gray areas indicate the observed maximum positive and negative relationship between chemical pesticide consumption and date (years). ARIMA, autoregressive integrated moving average.
The development of biopesticide will meet the demand for sustainable agricultural development in China
In 2006, the total biopesticide consumption reached 145 thousand tons, with nearly 10% of total pesticides (Figure 4A;
FIGURE 4

The development of biopesticide in China. (A) The proportion of biopesticides to the proportion of chemical pesticides in China in 2020. (B) The development of biopesticide in China until 2050 based on CAGR calculation. CAGR, compound annual growth rate.
China has achieved zero growth in chemical pesticide consumption since 2014, which meets China’s policy basis (
Chemical pesticide consumption will reach zero level in China in 2050 (Figure 3C), which is accordant with the hope of chemical pesticide-free agriculture in Europe in 2050 (
Pesticide consumption is subject to changing climatic scenarios and thus has seasonal changing characteristics. Therefore, a seasonal ARIMA model was used to predict the chemical pesticide consumption in China until 2050 (Figure 3). We predict that China will possibly step into the era of pesticide-free agriculture in 2050. However, to achieve high yield and quality crop production, China still has the greatest challenges to develop biopesticides with the largest population in the world. It is very vital to perfect the following jobs for biopesticide production.
Conclusion and future directions
Many plants contain a large amount of brassinosteroids. As an environmentally friendly substance, the use of brassinosteroids not only reduces the negative impact of a large number of chemical pesticides on the ecological environment but also plays a role in killing pests and reducing the impact of diseases and insect pests on the crop (
The biological metabolism method is one of the most effective pest control methods in the current crop pest control work, as the microbial control method has the characteristics of low side effects, is harmless to the human body, and causes no environmental pollution (
To ensure the quality and safety of agricultural products and reduce the residues of traditional chemical pesticides, the technology and products of new crop biological disaster prevention and control will inevitably become the focus of innovation in the future. China will greatly rely on scientific and technological progress, including biological control, plant immunity, and pheromone prevention. Cytokinins are plant hormones, which affect not only plant growth, development, and physiology but also interact with plant pathogens by improving the defense and susceptibility of plants against bacterial and fungal pathogens and pest insects via the improvement of plant immunity (
New light sources and semichemical application technologies for insect trapping and killing will be developed (
Integrated Pest Management (IPM) is an environmentally friendly, common sense approach to control pests and focuses on ecological aspects of pest management (
Replacing synthetic insecticides with transgenic crops for pest control is a also potential way of pest management (
Unfortunately, there are still some potential conflicts of interest involved in the original reporting of pesticide use data in China. Biopesticide development is a potential way to replace the use of chemical pesticides but the high-cost production of biopesticides still limits its usage (
China will possibly step into the era of pesticide-free agriculture in 2050 according to the analysis based on a seasonal ARIMA model. However, to prevent crop production loss, China still has the greatest challenges to develop biopesticides and biological techniques and maintain biodiversity.
Statements
Data availability statement
The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation.
Author contributions
XW and YC were involved in the initial conceptualization and design of this manuscript. All authors performed the experiment and analyzed the data and wrote and provided revisions to the manuscript, contributed to this study and approved the submitted version.
Conflict of interest
XW, YC, and FL were employed by Wuzhoufeng Agricultural Science & Technology Co., Ltd.
Publisher’s note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.
Supplementary material
The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpls.2022.942117/full#supplementary-material
Supplementary MaterialThe calculation of the seasonal autoregressive integrated moving average (ARIMA) model.
Footnotes
1.^https://www.reach24h.com/en/news/industry-news/agrochemical/compliance-suggestions-for-china-biological-pesticides.html
3.^https://www.statista.com/statistics/863620/pesticide-consumption-volume-in-china/
4.^https://www.mordorintelligence.com/industry-reports/china-biopesticides-market-industry
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Summary
Keywords
autoregressive integrated moving average model, biopesticide, chemical pesticide, compound annual growth rate (CAGR), pesticide-free agriculture
Citation
Wang X, Chi Y and Li F (2022) Exploring China stepping into the dawn of chemical pesticide-free agriculture in 2050. Front. Plant Sci. 13:942117. doi: 10.3389/fpls.2022.942117
Received
12 May 2022
Accepted
15 August 2022
Published
09 September 2022
Volume
13 - 2022
Edited by
Jitendra Mishra, Babasaheb Bhimrao Ambedkar University, India
Reviewed by
Estibaliz Sansinenea, Meritorious Autonomous University of Puebla, Mexico; Amitava Rakshit, Banaras Hindu University, India
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© 2022 Wang, Chi and Li.
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*Correspondence: Xuejiang Wang, 1115625548@qq.com
This article was submitted to Crop and Product Physiology, a section of the journal Frontiers in Plant Science
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