Phabian Makokha, Asunta L. Thompson, Erik Hanson, Gary Secor, Andrew P. Robinson
{"title":"Optimization of Row Width and Seed Spacing for Red Norland","authors":"Phabian Makokha, Asunta L. Thompson, Erik Hanson, Gary Secor, Andrew P. Robinson","doi":"10.1007/s12230-025-09994-6","DOIUrl":"10.1007/s12230-025-09994-6","url":null,"abstract":"<div><p>Tablestock growers must produce high yields of optimally sized tubers to maximize market opportunities and economic returns. The effects of row width and seed spacing on tuber yield and profitability for Red Norland were evaluated in 2022 and 2023 near Becker, MN, using a split-plot factorial arrangement of treatments. Five row widths (71, 76, 81, 86, and 91 cm) and three seed spacings (20, 25, and 30 cm) were assessed. The 91 cm row width and 25 cm seed spacing are standard industry practices among growers in MN. Row width and seed spacing interactions were not significant for marketable yield. Marketable tuber yield increased by 13% for both 71 and 76 cm row widths, resulting to increased profits of $3,027 ha<sup>−1</sup> (71 cm) and 3,201 ha<sup>−1</sup> (76 cm), compared to the 91 cm industry standard row width. Tuber number increased by 8 to 16% at 20 cm seed spacing compared to 25 and 30 cm seed spacing. There was a profit increase of $788 ha<sup>−1</sup> from the 20 cm seed spacing compared to 25 cm seed spacing, while the 30 cm seed spacing decreased profits by $1,218 ha<sup>−1</sup>. Narrower row-widths of 71 and 76 cm and closer seed spacing of 20 cm enhanced yield and grower returns.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 4","pages":"372 - 379"},"PeriodicalIF":1.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12230-025-09994-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erihemu, Chuchu Zhang, Hongze Lv, Ke Shi, Bidan Shi, Jing Wang, Meng Zhao, Pengfei Zhang, Yi Wu, Hongmei Zhu
{"title":"Oxidative Responses of ‘Jinshu 7’ Potato Tuber to Pulse Electric Field Treatment","authors":"Erihemu, Chuchu Zhang, Hongze Lv, Ke Shi, Bidan Shi, Jing Wang, Meng Zhao, Pengfei Zhang, Yi Wu, Hongmei Zhu","doi":"10.1007/s12230-025-09993-7","DOIUrl":"10.1007/s12230-025-09993-7","url":null,"abstract":"<div><p>An orthogonal experiment was used to optimize the pulsed electric field (PEF) conditions for inhibiting the browning of whole potatoes. The effects of PEF treatment on microstructure, overall appearance, physicochemical properties, and enzyme activity related to enzymatic browning for whole potato tubers (Jinshu 7) during storage were evaluated. Results showed that the following conditions were optimal: pulse voltage of 400 V, pulse time of 60 s, and pulse number of 4 pieces. Under optimal conditions, the PEF-treated whole potatoes were observed to be significantly lower at 27.6% of browning index (Δ<i>L</i> value) and 28.09% of polyphenol oxidase (PPO) activity, respectively, compared with the control group. Compared with the control, PEF-treated whole potatoes had lower activity of PPO during 60 days of storage and higher level of total phenols during 15–45 days of storage. Results indicated that PEF treatment could control the browning of whole potatoes by inhibiting PPO activity to reduce enzymatic browning.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 3","pages":"290 - 303"},"PeriodicalIF":1.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Value Chain Analysis of Potato (Solanum spp.): Evidence from Guagusa Shikudad District of Awi Zone, Amhara Region, Ethiopia","authors":"Wubalem Gobie","doi":"10.1007/s12230-025-09991-9","DOIUrl":"10.1007/s12230-025-09991-9","url":null,"abstract":"<div><p>Potato is a key global food security crop, contributing to income generation, employment, and nutrition for smallholder farmers. However, its development is hindered by limited adoption of improved technologies, weak bargaining power, low value addition, and unorganized markets. This study maps potato value chain actors, analyzes market structure, conduct, and performance, and identifies determinants of market supply. Using a mixed-methods approach, data were collected from 174 producers and 75 traders. Findings reveal 69% of producers use improved technologies, while only 37.93% practice value addition. Five market channels were identified, with a 32.07% market concentration. Processors achieved the highest profit margin (34.20%) through value addition. Key determinants of market supply include improved seeds, production volume, education, market information, and extension services, while livestock owning and family size negatively impacted supply. This study recommends coordinated efforts to promote technology adoption, value addition, and market organization to enhance benefits for all value chain actors.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 3","pages":"271 - 289"},"PeriodicalIF":1.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Patricia J. Slininger, David A. Schisler, Nora L. Olsen, Maureen A. Shea-Andersh, Lynn K. Woodell, Rabecka L. Hendricks, Jeff S. Miller, Bruce S. Dien
{"title":"Control of Fusarium Dry Rot on Postharvest Russet Burbank and Clearwater Russet Potatoes by Pseudomonas Biocontrol Agents Used Alone and in Combination with a Chemical Fungicide","authors":"Patricia J. Slininger, David A. Schisler, Nora L. Olsen, Maureen A. Shea-Andersh, Lynn K. Woodell, Rabecka L. Hendricks, Jeff S. Miller, Bruce S. Dien","doi":"10.1007/s12230-025-09989-3","DOIUrl":"10.1007/s12230-025-09989-3","url":null,"abstract":"<div><p>The biological control of Fusarium dry rot of potato by a new desiccation tolerant <i>Pseudomonas</i> variant triculture was investigated. Pseudomonads do not form spores, and desiccation tolerance is key to low-cost drying, convenient shelf-storage, and successful application. The triculture, formulated as an air-dried product on a dispersible carrier, can store long term at 4 C without need of freezing. In this work, the dry triculture powder was rehydrated prior to spraying to potatoes where it dries and protects wounds from pathogen infection. This research compared the efficacy of both fresh liquid and rehydrated air-dried formulations of the desiccation tolerant triculture and assessed their benefit in combination with the chemical fungicide Stadium<sup>R</sup> (actives azoxystrobin + fludioxonil + difenoconazole). Three years of both laboratory and small-scale pilot trials were conducted on both Russet Burbank and Clearwater Russet potato cultivars to assess efficacy against the pathogen <i>F. sambucinum</i>. Additional controls included no treatment (water), the sanitizer StorOx<sup>R</sup> 2.0 (hydrogen peroxide + peroxyacetic acid), and Bio-Save<sup>R</sup> 10 LP, which is a <i>Pseudomonas syringae</i>-based biological control product that is stored refrigerated or frozen. When all were sprayed in 3.527 mL kg<sup>−1</sup> tuber, the air-dried variant triculture reduced disease by 29% on average and performed similarly to the freshly produced triculture (40%) and Bio-Save<sup>R</sup>. Combination of triculture with Stadium<sup>R</sup> reduced disease severity by 75%, which is below that attainable by Stadium<sup>R</sup> alone at either full (68%) or one-third strength, and combination treatments of triculture with reduced Stadium<sup>R</sup> controlled disease as well as Stadium<sup>R</sup> alone at full label rate.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 3","pages":"232 - 254"},"PeriodicalIF":1.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhammad Junaid Sadiq Gill, Umer Ali, Aqib Hassan Ali Khan, Ismat Nawaz, Tayyab Ashfaq Butt, Cyrus Raza Mirza, Ameena Iqbal, Arfan Ali, Faiz Ur Rahman, Sohail Yousaf, Mazhar Iqbal
{"title":"Physicochemical, Enzymatic, and Microbial Responses to Phosphofructokinase Overexpressing Transgenic Potato Cultivation: A Pot Experiment","authors":"Muhammad Junaid Sadiq Gill, Umer Ali, Aqib Hassan Ali Khan, Ismat Nawaz, Tayyab Ashfaq Butt, Cyrus Raza Mirza, Ameena Iqbal, Arfan Ali, Faiz Ur Rahman, Sohail Yousaf, Mazhar Iqbal","doi":"10.1007/s12230-025-09990-w","DOIUrl":"10.1007/s12230-025-09990-w","url":null,"abstract":"<div><p>The risk associated with genetically modified (GM) plants has sparked considerable debate. This study assesses the influence of transgenic <i>phosphofructokinase</i> overexpressing potatoes (<i>pfkB-</i>potato) on the soils of three major potato-growing Pakistani districts, by studying effects on the soil properties, enzymatic activities, and microbial abundance. There were no significant differences in soil properties or major/minor nutrients between GM and wild potatoes. The nitrogen content of transgenic potato plants in Sahiwal soil increased by 5.7% at all stages. At the flowering stage, 6–7% more available phosphorus in wild-type potato was noted in Mansehra and Sahiwal soils. Dehydrogenase, alkaline phosphatase, and urease activities peaked at flowering, while were lowest at harvest stage. Actinobacteria (86.06%), Proteobacteria (10.37%), and Firmicutes (3.57%) were the most abundant phyla. Potato cultivation, regardless of wild-type or transgenic, increased the Firmicutes bacteria abundance, compared to non-vegetative soil. In conclusion, cultivating <i>pfkB-</i>potato can only slightly alter soil enzymes/properties, albeit not significantly.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 3","pages":"255 - 270"},"PeriodicalIF":1.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dahu Chen, Judith Nyiraneza, Kamrun Nahar, Danielle Murnaghan, Jessica Matheson, Ryan Barrett, Kyra Stiles, Tandra D. Fraser, Rick D. Peters
{"title":"Impacts of Primary Non-Inversion Shallow Tillage and Moldboard Plowing on the Potato Early Dying Disease Complex in Prince Edward Island, Canada","authors":"Dahu Chen, Judith Nyiraneza, Kamrun Nahar, Danielle Murnaghan, Jessica Matheson, Ryan Barrett, Kyra Stiles, Tandra D. Fraser, Rick D. Peters","doi":"10.1007/s12230-025-09987-5","DOIUrl":"10.1007/s12230-025-09987-5","url":null,"abstract":"<div><p>Conservation tillage has shown potential to improve soil health and enhance crop productivity in various cropping systems. Moldboard plowing (MP) in the fall prior to the potato phase is a conventional practice in Prince Edward Island (PEI), Canada, which leaves the soil prone to erosion and soil organic matter decline. Potato early dying disease complex (PED) is a major yield limiting factor in potato production in PEI. The objective of this four-year (2019–2022) study conducted in 14 commercial fields was to determine the effect of non-inversion shallow tillage (ST) in comparison with MP on PED pathogen population density in the spring at potato planting time and in the fall post-potato harvesting, and on PED disease severity. Root lesion nematodes (<i>Pratylenchus spp</i>., RLN) were detected in all fields. <i>Verticillium dahliae</i> was the predominant species in all fields, while <i>V. albo-atrum</i> was sporadically detected in a few samples. The population density of the RLN and <i>V. dahliae</i> varied among the fields. In the spring samples, <i>V. dahliae</i> density was significantly higher in 5 of the 14 fields with the ST treatment compared with MP. RLN density was significantly higher in one of the 14 fields with the ST. When averaged across all fields, <i>V. dahliae</i> density was 1.8-fold higher with ST than with MP (p = 0.018), but no differences were detected for RLN density between ST and MP. In the fall after the potato harvest, only two fields had significantly higher <i>V. dahliae</i> density with the ST than with MP, and no differences were detected for RLN density between ST and MP. When combined data across all fields were analyzed, no differences in pathogen population levels were detected between ST and MP for both <i>V. dahliae</i> and RLN. Higher PED severity was detected in three fields associated with ST. However, when disease ratings were averaged across all fields, no PED severity difference was detected between ST and MP. The PED severity was significantly positively related to the spring population density of <i>V. dahliae</i> and RLN, but not with the tillage regimes in this study. Further study is needed to determine the long-term effect of tillage regimes on soil health, disease development, soil disease suppressiveness, pathogen population dynamics and PED development in potato production.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 3","pages":"205 - 219"},"PeriodicalIF":1.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12230-025-09987-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luis E. G. Pesantes, Lincoln Zotarelli, Edzard van Santen, Xin Zhao, Gabriel Maltais-Landry
{"title":"Pre-Planting and Supplementary In-Season Liquid Phosphorus Fertilization for Potato","authors":"Luis E. G. Pesantes, Lincoln Zotarelli, Edzard van Santen, Xin Zhao, Gabriel Maltais-Landry","doi":"10.1007/s12230-025-09985-7","DOIUrl":"10.1007/s12230-025-09985-7","url":null,"abstract":"<div><p>The objective of this study was to evaluate potato growth, phosphorus (P) uptake, total and marketable yield response to multiple rates of P fertilizer applied at planting, emergence, and tuber initiation stages in 2019 and 2020. Varying pre-plant (P<sub>pp</sub>) rates (0, 25, 49, 74 kg ha<sup>−</sup><sup>1</sup> P) and two supplementary liquid P applications (0 and 12 kg ha<sup>−</sup><sup>1</sup> P) at emergence (P<sub>eme</sub>) and tuber initiation (P<sub>ini</sub>) were tested. Initial Mehlich-3 soil P content varied from 128 to 160 mg kg<sup>−</sup><sup>1</sup>. There were no significant interactions among P<sub>pp</sub>, P<sub>eme</sub>, and P<sub>ini</sub> for yield or P uptake across seasons. Tuber total yield ranged from 33.3 to 45.3 Mg ha<sup>−1</sup> across seasons. However, higher P<sub>pp</sub> rates increased dry biomass, P uptake, and tuber yield, with no significant differences between 49 and 74 kg ha<sup>−</sup><sup>1</sup> P rates. Liquid P applied at a rate of 12 kg ha<sup>−1</sup> of P during tuber initiation stage significantly increased potato total and marketable yield compared to no liquid P application in 2019. Despite relatively high initial soil P levels, added fertilizer enhanced yields, contradicting current recommendations. These findings suggest a need to reassess Mehlich-3 interpretations and further validate in-season liquid P use for broader application.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 2","pages":"173 - 190"},"PeriodicalIF":1.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Phillip S. Wharton, Sandesh Dangi, James W. Woodhall
{"title":"Development of an Innovative Loop-Mediated Isothermal Amplification (LAMP) Assay for the Rapid On-Site Detection of Phytophthora infestans","authors":"Phillip S. Wharton, Sandesh Dangi, James W. Woodhall","doi":"10.1007/s12230-025-09986-6","DOIUrl":"10.1007/s12230-025-09986-6","url":null,"abstract":"<div><p>Late blight of potato, caused by <i>Phytophthora infestans</i>, is a major constraint to potato production. Early detection, coupled with a knowledge of the genotype, can ensure the timely implementation of optimal disease management strategies. In this study, we developed a new loop-mediated isothermal amplification (LAMP) assay designed to amplify the <i>ypt1</i> gene for <i>P. infestans</i> which can readily distinguish <i>P. infestans</i> from other potato oomycetes pathogens such as <i>P. erythroseptica,</i> and<i> Pythium ultimum</i> within 10 min on a Genie II or III platform. Six other published LAMP assays were compared with our assay on a Genie II using the same concentration of primers used in the original published assays. On the Genie platform, our assay was more reliable than other assays based on specificity and sensitivity. Our assay did not detect <i>P. mirabilis</i> or <i>P. phaseoli</i>. The lower limit of detection of our assay was determined to be 0.001 ng using DNA from pure cultures and 0.05 ng using DNA from infected leaves. LAMP and quick DNA extraction technology, coupled with a portable platform such as the Genie II or III, enable the rapid on-site detection of <i>P. infestans</i>.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 2","pages":"191 - 204"},"PeriodicalIF":1.2,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12230-025-09986-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Koffi Djaman, Komlan Koudahe, Samuel Essah, Umesh K. Shanwad
{"title":"Critical Nitrogen Dilution Curves for Nitrogen Management in Potato (Solanum tuberosum L.): A Minireview","authors":"Koffi Djaman, Komlan Koudahe, Samuel Essah, Umesh K. Shanwad","doi":"10.1007/s12230-025-09984-8","DOIUrl":"10.1007/s12230-025-09984-8","url":null,"abstract":"<div><p>Potato (<i>Solanum tuberosum</i> L.) is one of the crops worldwide produced under different climatic and cropping systems conditions. With the multitude of cultivars and variable relative maturity, numerous studies have shown that nitrogen management in potatoes is a key to tuber yield and quality. Most potato growers tend to apply high amounts of nitrogen fertilizer while yield is not always consistent with the applied nitrogen fertilizer rates. Thus, potato cropping system specialists have been developing critical nitrogen dilution curves across different environments and for different potato cultivars with quite large variability in the equations. This review aims to inventory the developed critical nitrogen dilution curves for potatoes worldwide and analysis the discrepancies. A literature search was performed using online search engines for 6 months using keywords such as nitrogen dilution curve, critical nitrogen dilution curves of potatoes. Published results collection was done for the well-known peer reviewed journals. The critical N concentration (Nc) is defined as the minimum nitrogen concentration for achieving maximum aboveground biomass at any time during the crop growing season and it is represented by an allometric function, i.e. Nc = aW<sup>−b</sup> where W is the total shoot biomass [Mg dry matter (DM) in ha <sup>−1</sup>], Nc is the total N concentration in shoot (g kg <sup>−1</sup> DM), and a and b are estimated parameters. The parameter “a” of all monitored critical nitrogen dilution curves falls within the range [1.5, 7] of which 50% of the parameter “a” falls within the range of [5, 5.5] and the parameter “b” falls within the range [0.15, 0.60] with a large variation. The parameters “a” and “b” are impacted by the potato genotype, environment, and the management practices. Moreover, the estimation procedures of the parameters “a” and “b” were different and impacted the magnitude of these parameters. Based on some recent studies, we recommend the use of the Bayesian hierarchical method or the pooled Bayesian hierarchical method to develop a unique critical nitrogen dilution curve for potatoes that includes several genotypes, environment, and management practices for nitrogen fertilizer application rate optimization, system profitability and sustainability while reducing soil and water pollution by the nitrate leaching due to over fertilization and inappropriate split and timing of the nitrogen fertilizer application.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 2","pages":"107 - 118"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erik J. Wenninger, Samuel P. DeGrey, Jonas Insinga, Eric Knopf, Andrei Alyokhin, Ethann R. Barnes, Ben Bradford, Russell L. Groves, Brian Manley, Julia Piaskowski
{"title":"Responses of Non-Target Arthropods to the dsRNA Bioinsecticide Calantha™ and Conventional Insecticides Targeting Colorado Potato Beetle, Leptinotarsa Decemlineata (Say)","authors":"Erik J. Wenninger, Samuel P. DeGrey, Jonas Insinga, Eric Knopf, Andrei Alyokhin, Ethann R. Barnes, Ben Bradford, Russell L. Groves, Brian Manley, Julia Piaskowski","doi":"10.1007/s12230-025-09979-5","DOIUrl":"10.1007/s12230-025-09979-5","url":null,"abstract":"<div><p>Management of the Colorado potato beetle (<i>Leptinotarsa decemlineata</i>) is reliant on conventional insecticides that can negatively affect non-target arthropods. Calantha™ (active ingredient: ledprona) is a sprayable double-stranded RNA biopesticide specific for <i>L decemlineata</i> proteasome subunit beta 5 gene that triggers the RNA-interference pathway and is designed to have limited non-target effects. To test this hypothesis, we conducted two years of field trials in Idaho, Wisconsin, and Maine comparing arthropod responses to different insecticide regimes, with and without Calantha, targeting the Colorado potato beetle. Comparisons of arthropod abundance among treatments showed no evidence of effects of Calantha on non-target arthropods, including beneficials (predators, parasitoids), “neutrals” (i.e., non-pests), and other beetle species. Conventional insecticides generally showed more non-target effects, and responses were always stronger for arthropods from vacuum samples than pitfall samples. Insecticide programs featuring Calantha, especially in rotation with other biorational products, may reduce pests while preserving beneficial arthropods and contribute to biological control of arthropod pests in potato fields.</p></div>","PeriodicalId":7596,"journal":{"name":"American Journal of Potato Research","volume":"102 2","pages":"129 - 151"},"PeriodicalIF":1.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12230-025-09979-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}