Crop Protection最新文献

{"title":"Sustainable control of Tetranychus neocaledonicus André (1933) (Acari: Tetranychidae) on lima bean through essential oils","authors":"Ana Caroline Santos de Sousa ,&nbsp;Elizabeth Lorena Ramos Cabral ,&nbsp;Giovana Lopes da Silva ,&nbsp;Mariano Oscar Anibal Ibanez Rojas ,&nbsp;Izaias Santos Marques ,&nbsp;Angella Maria Alencar Viana ,&nbsp;Gutierres Nelson Silva ,&nbsp;Solange Maria de França ,&nbsp;Paulo Roberto Ramalho Silva ,&nbsp;Adriele de Castro Ferreira ,&nbsp;Alexandra Lopes Carvalho ,&nbsp;Kamilla de Andrade Dutra ,&nbsp;Daniela Maria do Amaral Ferraz Navarro ,&nbsp;Douglas Rafael e Silva Barbosa","doi":"10.1016/j.cropro.2025.107266","DOIUrl":"10.1016/j.cropro.2025.107266","url":null,"abstract":"<div><div><em>Tetranychus neocaledonicus</em> André (1933) (Acari: Tetranychidae) is a significant pest of lima bean fields, and its management frequently depends on synthetic acaricides, despite the absence of licensed products permitted for this crop. This study assessed the bioactivity of <em>Juniperus virginiana</em> (Pinales: Cupressaceae) and <em>Melaleuca alternifolia</em> (Myrtales: Myrtaceae) essential oils against <em>T. neocaledonicus</em> as prospective management solutions. Essential oils were evaluated by gas chromatography-mass spectrometry (GC-MS), and their toxicity was determined by immersing lima bean leaf discs in oil solutions. Lethal concentrations (LC₅₀ and LC₉₀) were established for adult females, and their effects on egg viability, repellency, and population growth were assessed at sublethal concentrations (LC₂₀ and LC₃₀). Chemical research indicated that the principal components of <em>J. virginiana</em> oil were (<em>Z</em>)-thujopsene (31.94 %) and cedrol (25.61 %), whereas <em>M. alternifolia</em> was primarily comprised of terpinen-4-ol (47.24 %). The findings indicated that <em>J. virginiana</em> oil (LC₅₀ = 0.38 μL/mL) exhibited substantially greater toxicity than <em>M. alternifolia</em> (LC₅₀ = 1.68 μL/mL). <em>J. virginiana</em> had ovicidal efficacy at both LC₅₀ and LC₉₀, while <em>M. alternifolia</em> was only effective at LC₉₀. Both oils exhibited repellent characteristics, achieving repellency rates of 98 % for <em>J. virginiana</em> and 88 % for <em>M. alternifolia</em> at LC₃₀; however, only <em>J. virginiana</em> significantly reduced the instantaneous population growth rate of <em>T. neocaledonicus</em>. These findings highlight the potential of essential oils, particularly <em>J. virginiana</em>, as promising alternatives to synthetic acaricides for mite management in lima bean crops.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107266"},"PeriodicalIF":2.5,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resistance levels to propargite in field populations of Brevipalpus yothersi (Acari: Tenuipalpidae) from Brazil's citrus belt","authors":"Hector Alonso Escobar-Garcia ,&nbsp;Daniel Júnior de Andrade","doi":"10.1016/j.cropro.2025.107267","DOIUrl":"10.1016/j.cropro.2025.107267","url":null,"abstract":"<div><div><em>Brevipalpus yothersi</em> Baker is a vector of citrus leprosis virus C (CiLV-C), the primary viral disease affecting orchards across the citrus belt of Brazil. Disease management is based mainly on the use of synthetic acaricides to control this mite, with propargite being one of the main acaricides currently in use. The objective of this study was to estimate the levels of resistance to propargite in field populations of <em>B. yothersi</em>. A direct contact bioassay was established on leaf discs of jack bean plants, exposing females to propargite for 48 h. The LC₅₀ and LC₉₅ values were determined for the susceptible laboratory population and for the field populations. In addition, ArcGIS software was used to spatially represent the resistance ratios found. The susceptible laboratory population presented LC₅₀ and LC₉₅ values of 34.97 and 87.70 mg L⁻¹, respectively. Field populations showed LC₅₀ values ranging from 15.35 to 94.54 mg L⁻¹, with resistance ratios in LC₅₀ between 0.44 and 2.70-folds that of the laboratory population, indicating low levels of resistance to propargite. Using ArcGIS, the geographic impact of the resistance status was visualized. Currently, the development of resistance to propargite in <em>B. yothersi</em> is low and can be prevented, allowing continued effective control of the vector. To maintain this situation, it is essential to implement resistance management strategies, such as the rotational use of acaricides with different modes of action, adapted to the characteristics of each region.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"196 ","pages":"Article 107267"},"PeriodicalIF":2.5,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fungicide efficacy and duration of protection against coffee leaf rust (Hemileia vastatrix) on commercial coffee farms in Hawaii","authors":"Luis F. Aristizábal ,&nbsp;Colby T. Maeda ,&nbsp;Tracie Matsumoto ,&nbsp;Melissa A. Johnson","doi":"10.1016/j.cropro.2025.107269","DOIUrl":"10.1016/j.cropro.2025.107269","url":null,"abstract":"<div><div>Coffee leaf rust (CLR, <em>Hemileia vastatrix</em>) is a recent arrival to Hawaii and has quickly become the most significant challenge to the State's small but economically important coffee industry. Frequent sprays of fungicides and the improvement of agronomic practices have been the primary management strategies for controlling this devastating disease. However, the high cost of products and labor coupled with the harmful effects of chemical inputs have made frequent applications of fungicides economically and environmentally unfeasible. The aim of this study was to determine fungicide efficacy against CLR, duration of protection, and cost of applications in field trials conducted on commercial coffee farms on Hawaii Island in 2022 and 2023. The translaminar fungicide was the most effective product tested, keeping CLR below 2 % over a 12-week period. Copper-based fungicides were also effective at keeping CLR below the 5 % action threshold, although the duration of protection was shorter (6–8 weeks). Copper fungicides were the most cost-effective of all products examined ($126/acre), followed by the translaminar ($140/acre). In contrast, the <em>Bacillu</em>s-based fungicides and the botanical fungicide did not reduce CLR incidence and were more expensive to apply ($138-$198/acre). The findings presented here can be used by coffee growers to decide which fungicides to spray based on disease levels, time of year, management style, and budget. Future research is needed to determine optimal fungicide rotation strategies given the farm type and starting CLR incidence. This rotation will need to consider application timing, duration of product efficacy, as well as product compatibility.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"196 ","pages":"Article 107269"},"PeriodicalIF":2.5,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Colletotrichum gloeosporioides, a novel causal agent of Magnolia × soulangeana leaf blotch","authors":"Yu-Qing Bai ,&nbsp;Hui Li ,&nbsp;Yu Wan ,&nbsp;De-Wei Li ,&nbsp;Li-Hua Zhu","doi":"10.1016/j.cropro.2025.107262","DOIUrl":"10.1016/j.cropro.2025.107262","url":null,"abstract":"<div><div><em>Magnolia × soulangeana</em> Soul.-Bod. is a small arbor with ecological, economic and ornamental value. In October 2022, a serious outbreak of a foliar disease was recorded in Nanjing Forestry University, Jiangsu Province, with an incidence rate of 73 %. The diseased leaves showed curved, desiccated, and brown necrotic lesions. Five representative fungal isolates (YL 1-1, YL 1–2, YL 1–4, YL 1–5, and YL 1–6) were isolated from leaves exhibiting symptoms. The isolates were confirmed as <em>Colletotrichum gloeosporioides</em> through morphological and multi-locus phylogenetic approaches. Pathogenicity was confirmed through conidia suspension inoculation and fulfillment of Koch's postulates. This represents the first documentation of <em>C. gloeosporioides</em> as the pathogen responsible for leaf blotch on <em>M. × soulangeana</em> in China and worldwide.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107262"},"PeriodicalIF":2.5,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Newsletter","authors":"","doi":"10.1016/j.cropro.2025.107260","DOIUrl":"10.1016/j.cropro.2025.107260","url":null,"abstract":"","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107260"},"PeriodicalIF":2.5,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiple detoxification enzymes mediate resistance to anticholinesterase insecticides in Cnaphalocrocis medinalis (Lepidoptera: Crambidae)","authors":"Seena R. Subhagan ,&nbsp;Berin Pathrose ,&nbsp;Mani Chellappan ,&nbsp;M.S. Smitha ,&nbsp;M.T. Ranjith ,&nbsp;Smita Nair ,&nbsp;D. Dhalin","doi":"10.1016/j.cropro.2025.107261","DOIUrl":"10.1016/j.cropro.2025.107261","url":null,"abstract":"<div><div>Insecticide resistance in rice pests is a critical issue, yet research on resistance remains limited, leaving gaps in baseline data for effective resistance monitoring. This study addresses the gaps in resistance monitoring of rice leaf folder, <em>Cnaphalocrocis medinalis,</em> by assessing susceptibility to acephate, quinalphos, and carbosulfan while identifying underlying biochemical mechanisms. The susceptibility of <em>C. medinalis</em> varied significantly, with resistance ratios ranging from low to high for acephate (RR 5.07–172.53), high for quinalphos (RR 133.24–611.37), and moderate to high for carbosulfan (RR 25.40–347.96). Increased activity of detoxification enzymes, including carboxylesterase, glutathione S-transferase, and cytochrome P450-dependent monooxygenases, were further validated by synergism assays. Resistance mechanisms were enzyme-specific, with elevated CarE activity contributing to acephate resistance in the PKD population (TPP, SR = 24.81-fold) and to quinalphos resistance in the KUD (TPP, SR = 51.69-fold) and TCR (TPP, SR = 104.11-fold) populations. Increased Cyt P450 activity resulted in acephate resistance (PBO, SR = 72.01-fold) in the KUD population and carbosulfan resistance (PBO, SR = 3.13-fold) in the ONT population. Whereas multiple enzymes were implicated in acephate resistance in TCR, quinalphos resistance in PKD and ONT, and carbosulfan resistance in PKD, KUD, and TCR. The variations in the susceptibility of <em>C. medinalis</em> to organophosphates and carbamates present the first documented case of acephate resistance in India and the first report of carbosulfan resistance globally. Metabolic resistance to specific insecticides associated with multiple detoxification enzymes underscores the necessity for thoughtful insecticide rotation to ensure effective resistance management strategies.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107261"},"PeriodicalIF":2.5,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling imidacloprid resistance in Dalbulus maidis (Hemiptera: Cicadellidae): Inheritance patterns, cross-resistance and stability","authors":"Eduardo Perkovski Machado,&nbsp;Emily Vieira Souza,&nbsp;Gabriel Silva Dias,&nbsp;Pedro Vitor Camargo,&nbsp;Celso Omoto","doi":"10.1016/j.cropro.2025.107256","DOIUrl":"10.1016/j.cropro.2025.107256","url":null,"abstract":"<div><div>The corn leafhopper, <em>Dalbulus maidis</em> (DeLong &amp; Wolcott), is one of the most important pests affecting corn fields in Brazil. To establish a foundation for implementing insect resistance management (IRM) strategies for <em>D. maidis</em>, we conducted studies to understand the inheritance of resistance to imidacloprid, the cross-resistance profile, and the stability of resistance. An imidacloprid-resistant strain (Imi-R) was selected under laboratory conditions through mass selection using a field population of <em>D. maidis</em>. A portion of this field population was maintained without selection pressure (Imi-unsel) for 10 generations to verify the stability of resistance. The susceptible reference strain (SUS) has been kept without selection pressure for over 10 years. Leaf-dip bioassays showed that the resistance ratio increased from 1397-fold to 8871-fold in the Imi-R strain and decreased from 1.397-fold to 105-fold in the Imi-unsel strain, demonstrating that resistance of <em>D. maidis</em> to imidacloprid is unstable. Reciprocal crosses indicated autosomal, incompletely dominant, and polygenic resistance to imidacloprid. Cross- or multiple-resistance studies demonstrated ratios &gt;200-fold for bifenthrin, lambda-cyhalothrin, and acetamiprid in the Imi-R strain. However, low values were observed between imidacloprid and carbamates (methomyl and carbosulfan), organophosphate (acephate), and the neonicotinoid dinotefuran (RR &lt; 7-fold). After ten generations without selection pressure, the Imi-unsel strain exhibited high mortality in foliar spray (&gt;95 %) and seed treatment (&gt;70 % at 12 days after emergence) at field-recommended rates of imidacloprid, whereas the Imi-R strain exhibited mortality &lt;60 %. These findings explain the rapid evolution of resistance in <em>D. maidis</em> to neonicotinoids and emphasize the need for IRM strategies to maintain the effectiveness of imidacloprid and other insecticides.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107256"},"PeriodicalIF":2.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identity and pathogenicity of Diaporthe species causing canker and dieback on twigs of Rhus chinensis in Southwest China","authors":"Tao Ma,&nbsp;Xiao-Fei Ling,&nbsp;Zi-Xiang Yang","doi":"10.1016/j.cropro.2025.107259","DOIUrl":"10.1016/j.cropro.2025.107259","url":null,"abstract":"<div><div>Chinese gallnuts are widely used in medicine and chemicals due to their high tannin acid content. <em>Rhus chinensis,</em> the main host of the gall aphid, produces horned gallnuts that account for more than 70 % of all Chinese gallnut production<em>.</em> Fungal diseases like canker and dieback on <em>R. chinensis</em> threaten gall quality and yield, but little is known about their causative fungi. In 2021, twig canker and dieback affected 67.7 % of <em>R. chinensis</em> plants in Niujie Town, Yunnan province, Southwest China. Our study revealed that <em>Diaporthe</em> spp. are the main agents of the diseases, based on morphology, multigene phylogeny (ITS, <em>tef1-α</em>, <em>tub2</em>, <em>his3</em> and <em>cal</em>), and pathogenicity tests. This is the first study of identity and pathogenicity of <em>Diaporthe</em> species causing twig canker and dieback on <em>R. chinensis. Diaporthe</em> spp. were isolated from all 11 diseased samples, with six common species identified, belonging to two sections: Section Eres (<em>D. apiculata</em>, <em>D. citrichinensis</em>, <em>D. eres</em>, and <em>D. oraccinii</em>) and Section Sojae (<em>D. orixae</em> and <em>D. soja</em>). Section Eres was predominant (IR = 42.7 %), with the <em>D. citrichinensis</em> species complex (<em>D. citrichinensis</em> and <em>D. oraccinii</em>) as the dominant taxon. Four tested species (<em>D. citrichinensis</em>, <em>D. eres</em>, <em>D. oraccinii</em>, and <em>D. orixae</em>) caused lesions and/or dieback on 5-year-old twigs of <em>R. chinensis</em> in <em>in vivo</em> pathogenicity tests<em>.</em> This finding provides a foundation for disease management in gallnut production and further exploration of how fungi overcome tannin-based plant defenses and their role in plant disease, aiding in developing effective control strategies against these fungal pathogens.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"196 ","pages":"Article 107259"},"PeriodicalIF":2.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First report of Fusarium fujikuroi causing leaf blight on Chinese yew","authors":"Yao Charles Meto,&nbsp;Guoyu Wei,&nbsp;Huayang Xu,&nbsp;Yuling Jiang,&nbsp;Hongfei Gao,&nbsp;Anlong Hu","doi":"10.1016/j.cropro.2025.107258","DOIUrl":"10.1016/j.cropro.2025.107258","url":null,"abstract":"<div><div>The Chinese yew (<em>Taxus chinensis</em> (Pilg.) Rehd) is a notable species renowned for its significant contribution to modern medicine. In November 2023, leaf blight disease was observed affecting Chinese yew nurseries in Meishan City, Sichuan Province, China, reducing quality. The causal agent was identified through isolation, morphological characterization, and phylogenetic analysis using the internal transcribed spacer (ITS), elongation factor 1-α (EF1-α) gene, and the second largest subunit of RNA polymerase II (RPB2). Pathogenicity tests were conducted, and the fungus was successfully reisolated from the symptomatic needle. The pathogen was identified as <em>Fusarium fujikuroi</em>. Biological characteristics were determined under optimal growth conditions. This study provides the first comprehensive identification of the leaf blight pathogen <em>F. fujikuroi</em> on Chinese yew.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107258"},"PeriodicalIF":2.5,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Farmer uptake of cassava-whitefly management technologies and implications for future breeding and promotional efforts","authors":"Irene Bayiyana ,&nbsp;Anton Bua ,&nbsp;Annet Namuddu ,&nbsp;Alfred Ozimati ,&nbsp;Tom Omara ,&nbsp;Sam Wamani ,&nbsp;Sam Morris Opio ,&nbsp;Sarah Apio ,&nbsp;Richard Kabaalu ,&nbsp;Daisy Kemigisha ,&nbsp;John Colvin ,&nbsp;Christopher Abu Omongo","doi":"10.1016/j.cropro.2025.107252","DOIUrl":"10.1016/j.cropro.2025.107252","url":null,"abstract":"<div><div>Cassava stands as Uganda's second most vital staple food after bananas, playing a crucial economic role for smallholder farmers. However, whiteflies significantly reduce cassava yields, jeopardizing farmers' incomes and food security. Aside from direct damage, the cassava whitefly transmits cassava brown streak disease (CBSD) and cassava mosaic disease (CMD), leading to potential yield losses ranging from 70 % to 100 %. The control of whiteflies in cassava cultivation is complicated by the prevalence of varieties susceptible to these pests and the farmers' limited knowledge of effective insecticide use. A study employing both quantitative and qualitative survey methods was conducted to assess smallholder farmers' awareness and adoption of the whitefly-tolerant cassava variety, Mkumba, and the systemic insecticide imidacloprid. Findings reveal that 35.2 % of farmers grew Mkumba, while 31.9 % utilized chemical control. Furthermore, 34.7 % identified whiteflies on cassava, with 45.4 % associating sooty moulds on leaves with whitefly feeding. Awareness of these control technologies was evident among farmers. However, factors such as the farmer's age and sex influenced the adoption of Mkumba, with barriers including the limited availability and high costs of insecticides and certain undesirable traits of Mkumba hindering broader uptake. Addressing these challenges may enhance the adoption and demand for these technologies in cassava farming.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"195 ","pages":"Article 107252"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}