Patricia da Conceição Silva, Débora Francine Gomes Silva Pereira, Maria Josiane Martins, Isabela Oliveira Santos, Isabelle Carolyne Cardoso Batista, Renato Martins Alves, Sindy Natany Martins Barbosa, Gisele Martins Pereira, Débora Souza Mendes, Josiane Cantuária Figueiredo, Natan Cantuária Nunes, Wander Guilherme da Silva Leles, Polyana Danyelle dos Santos Silva, Louíza Lourranne Mendes Pereira, Lorena Gracielly de Almeida Souza, Helena Souza Nascimento Santos, Irisléia Pereira Soares de Sousa, Regina Cássia Ferreira Ribeiro, Andréia Marcia Santos de Souza David, Gevaldo Barbosa de Oliveira, Sabrina Gonçalves Vieira de Castro, Taylor Johnny Patricio Silva, Caik Marques Batista, Matheus Pinheiro Fonseca, Carlos Augusto Rodrigues Matrangolo, Laila Kristina Lopes Mendes, Fábio Cantuária Ribeiro, Flávio Cantuária Ribeiro, Paulo Cesar Mendes
{"title":"Characterization and Analysis of Fair Sellers in the Municipality of Janaúba in the North of Minas Gerais, Brazil","authors":"Patricia da Conceição Silva, Débora Francine Gomes Silva Pereira, Maria Josiane Martins, Isabela Oliveira Santos, Isabelle Carolyne Cardoso Batista, Renato Martins Alves, Sindy Natany Martins Barbosa, Gisele Martins Pereira, Débora Souza Mendes, Josiane Cantuária Figueiredo, Natan Cantuária Nunes, Wander Guilherme da Silva Leles, Polyana Danyelle dos Santos Silva, Louíza Lourranne Mendes Pereira, Lorena Gracielly de Almeida Souza, Helena Souza Nascimento Santos, Irisléia Pereira Soares de Sousa, Regina Cássia Ferreira Ribeiro, Andréia Marcia Santos de Souza David, Gevaldo Barbosa de Oliveira, Sabrina Gonçalves Vieira de Castro, Taylor Johnny Patricio Silva, Caik Marques Batista, Matheus Pinheiro Fonseca, Carlos Augusto Rodrigues Matrangolo, Laila Kristina Lopes Mendes, Fábio Cantuária Ribeiro, Flávio Cantuária Ribeiro, Paulo Cesar Mendes","doi":"10.5539/jas.v15n10p31","DOIUrl":"https://doi.org/10.5539/jas.v15n10p31","url":null,"abstract":"The objective of this work was to characterize and analyze the marketers who market their products at the Janaúba free trade fairs regarding the socioeconomic profile, business management, marketed products and difficulties in marketing. The research was descriptive. The data were collected by means of field survey in the main points where the free fairs in the municipality of Janaúba occur. The obtained data were analyzed through the distribution of frequencies and tables. Farmers are mostly family farmers who do not receive any kind of technical assistance or training to run the crop. They apply their own resources to cover the expenses and investments in production, having as a limiting factor the expansion of the business. Most do not control profitability, and of the percentage that does, only 7% use spreadsheet, do not have financial reserves in case of unforeseen occurrences. The values of the products marketed are almost always uncertain, since 81% of the marketers say that prices are negotiable. The main products marketed are fruits and vegetables, not being processed. Among the difficulties pointed out by the fairgrounds for the execution of the activity are the production costs. Regarding the structure of the Municipal Market, the main negative points were the lack of assistance (32%) and the lack of cleanliness (31%). The main improvement point was the availability of drinking water and the construction of bathrooms.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135355056","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}
Giovani Greigh de Brito, Angela Diniz Campos, Carlos Lásaro Pereira de Melo, Paulo Fernando Bertagnoli, Elsa Kuhn Klumb, Fabiane Grecco da Silva Porto, Ariano Martins de Magalhães Jr, Paulo Ricardo Reis Fagundes, José Maria Barbat Parfitt, Giovani Theisen, Cley Donizeti Martins Nunes
{"title":"Integrating Non-photochemical Quenching (NPQ) Measurements for Identifying Flood-Tolerant Soybean Genotypes in the Era of Climate Change","authors":"Giovani Greigh de Brito, Angela Diniz Campos, Carlos Lásaro Pereira de Melo, Paulo Fernando Bertagnoli, Elsa Kuhn Klumb, Fabiane Grecco da Silva Porto, Ariano Martins de Magalhães Jr, Paulo Ricardo Reis Fagundes, José Maria Barbat Parfitt, Giovani Theisen, Cley Donizeti Martins Nunes","doi":"10.5539/jas.v15n10p39","DOIUrl":"https://doi.org/10.5539/jas.v15n10p39","url":null,"abstract":"Climate change has negatively affected agriculture worldwide, including soybean production. Studies have shown that rising temperatures and extreme weather events like droughts and floods significantly reduce soybean yields. Developing flood-tolerant soybean genotypes is crucial for ensuring food security. Conventional breeding programs are limited by laborious and imprecise visual rating methods for flooding tolerance identification. High-throughput platforms for plant phenotyping using imaging techniques offer potential solutions, but they lack information on underlying physiological mechanisms. Non-photochemical quenching (NPQ) is a molecular adaptation in photosynthesis that dissipates excess light energy, protecting plants from damage. This study aimed to integrate NPQ measurements into high-throughput phenotyping procedures to identify flooding-tolerant soybean genotypes. The study evaluated 160 soybean genotypes for flooding tolerance, identifying those with higher grain yield potential. Subsequently, ten genotypes were selected for monitoring NPQ responses under flooded conditions. Results showed that genotypes with higher grain yields also exhibited superior NPQ performance, suggesting a positive correlation between flooding tolerance and energy dissipation capacity. Among these genotypes, 58I60 RSF IPRO, 64HO130 I2X and BRS 525 displayed superior potential and could be further exploited in breeding efforts, considering their grain yield capacity, plant leaf area, and photoprotective capacity under flooding conditions. These findings suggest that integrating NPQ measurements into high-throughput phenotyping platforms can aid in identifying flood-tolerant soybean genotypes for breeding programs, leading to more resilient crops in the face of climate change. Further field studies are warranted to validate these hypotheses and improve crop models for future climate scenarios.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135355052","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}
Márcio Adriano Santos, Silvia Nietsche, Wagner Ferreira da Mota, José Augusto dos Santos Neto, Gleika Larisse Oliveira Dorasio de Souza, Marlon Cristian Toledo Pereira, Adelica Aparecida Xavier, Regina Cássia Ferreira Ribeiro, Maria Josiane Martins, Mônica Romana Martins, Isabela Oliveira Santos, Carlos Augusto Rodrigues Matrangolo, Irisléia Pereira Soares de Sousa, Lívian Patrícia da Silva Santos, Natan Cantuária Nunes, Taylor Johnny Patricio Silva, Débora Souza Mendes, Zenóbia Cardoso dos Santos, Josiane Cantuária Figueiredo, Janderson Raony Verissimo, Renato Martins Alves, Gevaldo Barbosa de Oliveira, Helena Souza Nascimento Santos, Eliene Almeida Paraizo, Ana Lúcia Figueiredo de Souza Nogueira, Fábio Cantuária Ribeiro, Flávio Cantuária Ribeiro, Laila Kristina Lopes Mendes
{"title":"Seed Microbiolization Associate With Nitrogen Doses Increase the Nutrition of Tomato Fruits","authors":"Márcio Adriano Santos, Silvia Nietsche, Wagner Ferreira da Mota, José Augusto dos Santos Neto, Gleika Larisse Oliveira Dorasio de Souza, Marlon Cristian Toledo Pereira, Adelica Aparecida Xavier, Regina Cássia Ferreira Ribeiro, Maria Josiane Martins, Mônica Romana Martins, Isabela Oliveira Santos, Carlos Augusto Rodrigues Matrangolo, Irisléia Pereira Soares de Sousa, Lívian Patrícia da Silva Santos, Natan Cantuária Nunes, Taylor Johnny Patricio Silva, Débora Souza Mendes, Zenóbia Cardoso dos Santos, Josiane Cantuária Figueiredo, Janderson Raony Verissimo, Renato Martins Alves, Gevaldo Barbosa de Oliveira, Helena Souza Nascimento Santos, Eliene Almeida Paraizo, Ana Lúcia Figueiredo de Souza Nogueira, Fábio Cantuária Ribeiro, Flávio Cantuária Ribeiro, Laila Kristina Lopes Mendes","doi":"10.5539/jas.v15n10p20","DOIUrl":"https://doi.org/10.5539/jas.v15n10p20","url":null,"abstract":"Endophytic bacteria can promote growth and improve the quality of plant production. The objective of this work was to evaluate the efficiency of inoculation of a mix of non-host endophytic bacteria isolates in the nutrition of tomato fruits cultivated, fertilized with rock powder and different doses of nitrogen. The experimental design was in randomized blocks, in a factorial arrangement (2 × 6 + 3), with four replications. The treatments consisted of two methods of inoculation of the mix of endophytic bacteria: seed microbiolization and post-emergence inoculation; six doses of nitrogen fertilization: 0, 129, 258, 387, 516 and 645 kg ha-1; and 3 controls (without inoculation of the bacterial mix). The average export of macro and micronutrients in tomato fruits was, in descending order: K > N > P > Ca > Mg > S (averages of 1.33; 0.46; 0.07; 0.06; 0.05 and 0.05 g plant-1, respectively) and Mn > Cu > Fe > Zn (means of 2.67; 1.98; 1.71 and 0.79 mg plant-1, respectively). The inoculation method by seed microbiolization associated with nitrogen doses promoted significant increment in the dry mass of the fruits and in the content of the nutrients P, Ca, Zn, Fe and Mn.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135355053","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}
V. T. Zutah, S. A. Avaala, K. B. Ofori, B. K. Adevu, G. Y. Assan, Daniel Akowuah
{"title":"Effect of Demeter Adjuvant (Rizospray Extremo) in Enhancing the Effectiveness of Herbicide Mixtures for Effective Weed Control in a Matured Oil Palm Plantation in Western Ghana","authors":"V. T. Zutah, S. A. Avaala, K. B. Ofori, B. K. Adevu, G. Y. Assan, Daniel Akowuah","doi":"10.5539/jas.v15n10p58","DOIUrl":"https://doi.org/10.5539/jas.v15n10p58","url":null,"abstract":"An Adjuvant is an additive chemical that is known to enhance the effectiveness of pesticides like herbicides by helping to improve the absorption of the herbicides by weeds and may eventually help to reduce the dosage of the herbicides used. In the current trial, the adjuvant (Rizospray Extremo) was applied at 3 rates, i.e., 73 ml/ha, 109 ml/ha and 145 ml/ha. The herbicide mixtures used for the trial were glyphosate (glyphader) and triclopyr (garlon) mixtures at 436 ml/ha and 182 ml/ha respectively (60 mls glyphosate + garlon at 25 mls mixed in 15 litres of water). The herbicide control was glyphosate at 436 ml/ha + garlon at 182 ml/ha (with no adjuvant) whiles one plot was used as the no herbicide control. Weeds on the site include both soft weeds and woodies. Observations on weed mortality were made on weekly basis. Generally, herbicide application (with and without the adjuvant) effectively controlled the soft weeds at the site. Percentage weed growth reduction and herbicide efficacies generally increased with increasing rates of the adjuvant. Highest herbicide efficacy of 96% was obtained by the use of the adjuvant at 145 ml/ha. The treatments differed significantly mostly in their levels of control of the woody weeds at the site with adjuvant application at 145 ml/ha inducing the highest control of woody weeds (herbicide efficacy of 95.7%), whiles Adjuvant application at 73 ml/ha induced an efficacy of 88.91% on the woodies at the site. Glyphosate plus garlon application (without the use of adjuvant) induced an efficacy of 78.39%. The adjuvant was very effective in controlling weeds with waxy cuticles like the Thaumatococcus spp which were not effectively controlled without the use of theand adjuvant. The adjuvant (Rizospray Extremo) is therefore recommended for use in herbicide mixtures for spot spraying of woodies or noxious weeds at the site.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135355058","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}
T. G. Costa, Athamy S. de P. Cruz, Thaís C. de Sousa, T. Michel, S. C. Dias, J. D. A. Engler, T. Rocha
{"title":"Allelopathic Interactions of Solanum stramonifolium Jacq. Might Be Used for Meloidogyne incognita Management","authors":"T. G. Costa, Athamy S. de P. Cruz, Thaís C. de Sousa, T. Michel, S. C. Dias, J. D. A. Engler, T. Rocha","doi":"10.5539/jas.v15n9p76","DOIUrl":"https://doi.org/10.5539/jas.v15n9p76","url":null,"abstract":"The root-knot nematode (RKN) Meloidogyne incognita infects a large host range causing enormous agricultural losses. Although the control of this pest is mainly based on the use of chemical pesticides, natural alternatives are currently being largely considered, especially the use of plant-derived molecules, as allelochemicals and plant extracts. Solanum stramonifolium is a plant of the Solanaceae family and has been studied for its potential to control RKN, either by the use aqueous extracts of its seeds, or due to its immunity to nematode penetration. Our studies demonstrate that S. stramonifolium has an efficient defense mechanism against RKN completely preventing its penetration into its root system. Additionally, the compounds exuded by this plant in the soil can affect nematode infection in nearby grown Nicotiana benthamiana (-89% biomass for treatment I respectively, and -61% and +57% of galls for the treatments and Solanum lycopersicum (-79% biomass for treatment I, and -83% of galls for the treatments I and II). Herein, external (ED, < 3.5 kDa) and internal (ID, > 3.5 kDa) dialysates were prepared from the extract of S. stramonifolium seeds. Arabidopsis thaliana Col-0 inoculated with RKN treated with the dialysates showed a reduced gall diameter in 45% and 35% for ED and ID respectively. Additionally, a significant reduction in biomass was observed in germinated seeds after treatment with ID. In addition, Arabidopsis roots showed changes in their ploidy levels when treated with ED and ID, compared to the untreated control, indicating its effect on endoreduplicating cells. Finally, a partial identification of glycoalkaloids present in the ED and root extracts may help to explain plant immunity to root-knot nematode infection. Results obtained shed light on the defense mechanisms of S. stramonifolium against M. incognita, its allelopathic potential in co-cultivated plants and its biotechnological potential of dialysates obtained from its seeds, representing a strong alternative to the management of RKN in conventional agriculture.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"53 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91217668","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}
Mariah Ribeiro Rocha, Paulo de Moraes Ferreira, M. W. M. Oliveira, M. F. G. Sá, T. Rocha
{"title":"The Dynamic Nature of a Static Headspace Above Frozen Leaf Biomass From a Toxic Brazilian Plant","authors":"Mariah Ribeiro Rocha, Paulo de Moraes Ferreira, M. W. M. Oliveira, M. F. G. Sá, T. Rocha","doi":"10.5539/jas.v15n9p105","DOIUrl":"https://doi.org/10.5539/jas.v15n9p105","url":null,"abstract":"A static headspace method of sampling coupled to a conventional instrumental analytical probe, gas chromatography mass spectrometry (GCMS), has been applied to examine the volatile fraction above leaf tissue from Palicourea marcgravii, a toxic Brazilian plant that causes sudden death in livestock, and two other surrogate species (Lippia alba and Plectranthus spp.). \u0000 \u0000The unusual total ion chromatogram obtained for the plant of interest is discussed and explained by considering the “dynamic” nature of the static headspace when intact cellular biomass is present and frozen leaves are analyzed concerning the presence and production of methyl salicylate (MeSA), which is this plants main toxin.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"68 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74022349","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}
Salina Water, C. L. Amaro, L. Rossato, P. G. F. Santos, L. P. Borges, V. A. Amorim, D. B. Oliveira, F. S. Matos
{"title":"Importance of Silicon in the Growth of Jatropha curcas L. Plants Irrigated With Salina Water","authors":"Salina Water, C. L. Amaro, L. Rossato, P. G. F. Santos, L. P. Borges, V. A. Amorim, D. B. Oliveira, F. S. Matos","doi":"10.5539/jas.v15n9p95","DOIUrl":"https://doi.org/10.5539/jas.v15n9p95","url":null,"abstract":"The use of silicon in plant cultivation is one of the strategies to mitigate the negative effects of salinity. This study aimed to evaluate the effect of silicate fertilization on the morphophysiological, biochemical and nutritional characteristics of Jatropha curcas L. plants under saline stress. The work was carried out in a greenhouse at the State University of Goiás. The experiment was set up in a completely randomized design in a 5 × 2 factorial arrangement (plants irrigated with salt water with sodium chloride (NaCl) and electrical conductivities equal to 0 dS m-1; 2 dS m-1; 4 dS m-1; 6 dS m-1 and 8 dS m-1 applied at 80 days after emergence (DAE) and absence or presence of silica fertilization of 1 g L-1 with Si applied at 80 and 95 DAE by volume of 30 mL of the solution with the aid of a spray manual), five replicates and experimental plot of one plant per pot. The evaluations were carried out at 130 DAEs. The absence of differences in the concentrations of photosynthetic pigments and visible damages is indicative of the absence of severe toxic effects caused by salinity. The tolerance of Jatropha curcas L. plants to salinity is independent of silicon. The Jatropha curcas L. plant tolerates salinity by minimizing transpiration and remaining hydrated through the water stored in the succulent stem. In addition, the plants control sodium uptake and eliminate toxic compounds through increases in Calcium concentration and antioxidative metabolism respectively.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"13 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85326318","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}
Bruno Nicchio, F. C. Juliatti, H. Pereira, Marlon A. M. Vieira, Ideon C. Vasconcelos Filho, R. T. Sousa, B. Tubana
{"title":"Effect of Silicon Sources on Sugarcane Orange Rust, Ring Spot and Red Rot in Brazil","authors":"Bruno Nicchio, F. C. Juliatti, H. Pereira, Marlon A. M. Vieira, Ideon C. Vasconcelos Filho, R. T. Sousa, B. Tubana","doi":"10.5539/jas.v15n9p60","DOIUrl":"https://doi.org/10.5539/jas.v15n9p60","url":null,"abstract":"Brazil is the world’s largest producer of sugarcane (Saccharum officinarum), but the occurrence and severity of diseases such as orange rust (Puccinia kuehnii), ring spot (Leptosphaeria sacchari), and red rot (Colletotrichum falcatum) could be part of several factors limiting its production and is the reason for replacing cultivars. It is important to use other forms of disease control depending on the time required to obtain new resistant varieties. The use of silicon (Si) can provide more resistance to the plant making its less vulnerable to diseases. A study was conducted under greenhouse and field conditions. The greenhouse study had 13 treatments (control, fungicide, foliar solution I and II, K silicate, silicic acid at 20, 40 and 60 mg ha-1, wollastonite, agrosilicio, wollastonite + fungicide, wollastonite + K silicate; agrosilicio + fungicide; and agrosilicio + K silicate) with four replications. The field study had nine treatments (control, fungicide, foliar solution I and II, K silicate, silicic acid at 100 and 300 g ha-1 and phosphite at 0.5 and 1 L ha-1) and with three replications. Both studies used a randomized block design. The greenhouse study showed an increase in dry mass of pre-sprouted sugarcane seedling and Si uptake with foliar treatments, especially with silicic acid. K silicate and silicic acid showed lower severity of orange rust than the control and fungicide. On the field study silicic acid at 100 g ha-1 and 300 g ha-1 was more efficient in reducing the area under the disease progress curve (AUDPC) of ring spot compared to the control and K silicate. Fungicide was also more efficient in reducing AUDPC compared to the control as well.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"3 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75201476","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":"Analyzing the Characteristics of Cropping Intensity’s Change of Cultivated Land in China During 2010-2019","authors":"Yuanhong You, Yuhao Zhang, Haiyan Hou, Zhiguang Tang","doi":"10.5539/jas.v15n9p10","DOIUrl":"https://doi.org/10.5539/jas.v15n9p10","url":null,"abstract":"The sustained stability of the arable land replanting index is crucial to the national food security strategy. The exploration of the temporal and spatial changes in the arable land replanting index is of great significance for agricultural development and food security evaluation. This study investigates China’s arable land replanting index from 2010 to 2019 using MODIS NDVI image data, S-G filtering, and quadratic differentiation methods. The results show that there are significant spatial differences in China’s arable land replanting index, with the Huang-Huai-Hai region mainly producing double-cropping crops, the Northeast Plain and Loess Plateau mainly producing single-cropping crops, and the area south of the Yangtze River mainly producing multiple-cropping crops. Overall, China’s food production is mainly based on single-season crops. There is a gradual shift towards double-season crops from north to south, with lower replanting indices in the northwest and higher indices in the eastern provinces. The south has significantly higher indices than the north. During the study period, the arable land replanting index showed an overall upward trend. There were significant increases in the replanting index in the northeast, the Loess Plateau, and the northern Huang-Huai-Hai region. However, there was a downward trend in the southern Huang-Huai-Hai region and the middle and lower reaches of the Yangtze River. It is crucial to maintain the effective planting area of arable land in the Loess Plateau and the double-season planting area of arable land in the Huang-Huai-Hai region while also addressing the downward trend of the arable land replanting index in the middle and lower reaches of the Yangtze River to ensure food security by stabilizing the index.","PeriodicalId":14884,"journal":{"name":"Journal of Agricultural Science","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89710305","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}