Department Of Agriculture Research Articles

An Analytical Study on Growth Performance of Major Food Grain and Oilseed Crops in Context of Food Security: Rajasthan, India

Background: Productivity, as a source of growth has been a significant premise of analytical investigation in economics all along, however it gained an empirical momentum in the recent years only and has become a necessary index to growth. Present paper estimates growth rate of area, production and productivity of food grain and oilseed crops in Rajasthan. Methods: To analyse growth performance of food grain and oilseed crops Rajasthan time series, data on area, production and yield were collected from 1976-77 to 2018-19. The time-series data were collected on area, production and yield of selected crops from the Directorate of Economics and Statistics (DES), Directorate of Agriculture (DOA) and Rajasthan State Agriculture Department. The compound growth rates (CGRs) of area, production and productivity of selected crops in Rajasthan were calculated using the exponential function. Result: The study revealed that production, productivity and area of total food grains was recorded a positive and highly significant annual growth at the rate of 3.18%, 2.19% 0.63% per annum, respectively. The production, productivity and area of total oilseed was observed a positive and highly significant annual growth rate of 7.63%, 2.07% and 4.27% per annum, respectively. The area under barley, gram and sesamum reduced during the study period. Therefore, the technological support through the varietal improvement and extension support is required.

Crop diversification in perennial plantation systems of Sri Lanka: Patterns, determinants and challenges

CONTEXTThe adoption of crop diversification in response to climate change in perennial cropping systems is poorly understood. OBJECTIVEThis study identifies the current level of diversification, determinants of and constraints to adopting crop diversification in tea plantations in Sri Lanka as an example of a perennial crop in a developing country context. METHODSWe use a Panel Tobit model to analyse the driving forces of crop diversification using 2004–2018 data collected from 49 tea estates. In addition, tea estates' managers were interviewed to investigate barriers to adopting crop diversification. RESULTS AND CONCLUSIONSThe study reveals that geo-climatic conditions, magnitude of increase in temperature, and higher revenue variability are the specific factors influencing managers' probability of adopting crop diversification. Constraints to crop diversification include technological lock-in hindering alternative crops and worker shortages, financial difficulties, lack of productive lands suitable for alternative crops, ineffective Government land-use policies and regional weather patterns such as prolonged rainfall and heavy winds. SIGNIFICANCEIdentified barriers provide important insights into how to assist plantations to adopt crop diversification. We propose three policy recommendations to enhance tea estate managers' adaptive capacity to various environmental and social changes through crop diversification. These are: (1) enable managers to acquire the technical know-how on cultivating alternative crops by conducting practical training programmes connecting with the Department of Agriculture or Agriculture Faculties of regional Universities.; (2) increase awareness of less labor-intensive crops for diversification along with strategies for mechanisation via programmes integrated with the Ministry of Plantation Agriculture and the Agriculture Modernization Project of the Department of Agriculture; and (3) enact a national policy to mandate crop diversification in marginal tea lands with financial assistance from the Government.

An intelligent decision support system for agriculture economy based on fuzzy c-means

Abstract Agricultural informatization construction has developed rapidly in recent years, but its data has not been well utilized to support decision-making. Cluster analysis is an important branch of data mining, which is applied to the agricultural industry and enhances the competitiveness of the industry. In response to the problem of insufficient information space services for rural agricultural economy, the application of clustering analysis algorithm in the field of agricultural feed industry was studied. Based on fuzzy C-means technology, clustering analysis was conducted, aiming to provide a universal decision support platform for agricultural production management departments and achieve value co-creation among farmers, enterprises, and investors. In this paper, a method based on Xie-Ben validity is adopted, and the method is modified. In addition, the steps of removing empty clusters are added after the cycle of FCM algorithm to improve the efficiency of the algorithm. In the experimental stage, different subdivision results are obtained by selecting different parameters, and the results are analyzed to verify the effectiveness of the FCM algorithm. Finally, the improved FCM algorithm is applied to the agricultural marketing decision support system to provide important decision-making for domestic and foreign feed raw material producers and traders, animal husbandry feed production enterprises, agricultural investment institutions and so on.

Genetic Diversity and Genome-Wide Association in Cowpeas (Vigna unguiculata L. Walp)

Cowpea is one of the most popular dry-land legumes cultivated for food and forage in arid and semi-arid areas. Genetic diversity for global germplasm can be organized into core collections providing optimum resources to serve breeding requirements. Here, we present diversity analysis and genome-wide association study (GWAS) results for part of the cowpea core collection of the United States Department of Agriculture (USDA) along with breeding line controls. Included in the analysis were a total of 373 accessions analyzed with 6880 Single Nucleotide Polymorphism (SNP) markers from Genotyping by Sequencing (GBS). Population structure differentiated accessions into two groups irrespective of geographical origin and formed three clusters based on taxa upon phylogenetic analysis. A total of 56 SNPs were significantly associated to nine traits including pod length (25 Quantitative Trait Nucleotides, QTNs), seed anti-oxidant content (7 QTNs), dry pod color (7 QTNs), plant maturity (5 QTNs), flower color (5 QTNs), seed weight (4 QTNs), tolerance to low phosphate (1 QTN), growth habit (1 QTN), and response to rock phosphate (1 QTN) using Bayesian-information, Linkage-disequilibrium Iteratively Nested Keyway (BLINK), and Fixed and random model Circulating Probability Unification (FarmCPU) association models. Key genes related to all significant SNPs were identified based on annotations of the cowpea reference genome, including a flavonoid gene controlling flower color (Vigun08g040200.1), a root nodulation regulator for tolerance to low phosphate (Vigun11g168000.1), and numerous genes involved in signaling, biosynthesis, metabolite transport, and abiotic stress. Our results highlight the importance of maintaining public phenotyping databases at USDA and strengthening collaborations for data collection in cowpea to maximize research impacts.

Three Decades of Rust Surveys in the United States Reveal Drastic Virulence Changes in Oat Crown Rust.

To better understand how the pathogenicity of the oat crown rust pathogen Puccinia coronata f. sp. avenae (Pca) has changed in the United States, 30 years of United States Department of Agriculture (USDA) survey isolates (n = 5,456) tested on 30 to 40 differential lines were analyzed for overall and Pc-resistance-gene-specific virulence trends and correlations. Pca is incredibly pathologically diverse, with 88% of races represented by a single isolate. There are a slightly higher proportion of unique races from the Northern region of the United States, and for one fourth of the years, Northern region isolates were significantly more virulent than Southern isolates, which supports the idea that sexual recombination in this region is mediated by the alternate host as a major factor in creating new races. However, there is also support for regular isolate movement between North and South regions as isolates in the United States are steadily accumulating virulences at a rate of 0.35 virulences per year. Virulence significantly increased for 23 and decreased for four of the 40 differential lines. In the past few years, virulence has reached 90% or greater for 16 differential lines. There were also strong correlations in virulence for certain Pc genes that are likely identical, allelic, or target the same or closely linked pathogen effectors (e.g., Pc39, Pc55, and Pc71), and the results were largely in concordance with recent genome-wide association study (GWAS) effector studies using USDA isolate subsets. Understanding changes in Pca pathogenicity is essential for the responsible deployment and management of Pc resistance genes for sustainable and profitable oat production.

MyPlate Awareness and Engagement and Perceived and Objective Diet Quality in US Adults With Chronic Kidney Disease

Awareness of federal dietary guidelines has been associated with better perceived and objective diet quality. Little is known about the awareness of federal dietary recommendations among persons with chronic kidney disease (CKD) and the associations between recognition of guidelines, perception of diet quality, and objective quality of the diet in this population. We compared awareness of, and engagement with, MyPlate (a representation of 5 food groups from the US Department of Agriculture) along with perceived and objective diet quality, the latter assessed via Dietary Approaches to Stop Hypertension index scores, among US adults with and without CKD during 2017-2020. Among noninstitutionalized adults in the United States, 8.3% had albuminuria with normal or near-normal kidney function, 4.0% had estimated glomerular filtration rate 45-59mL/minute/1.73m2 (CKD stage G3a) and 1.6% had estimated glomerular filtration rate <45mL/minute/1.73m2 (CKD stages G3b/G4/G5). MyPlate awareness was lower among persons with CKD compared with those without CKD (19.6% vs. 26.4%, P<.001) and was lower among persons with more advanced CKD stages: 20.8%, 18.2%, and 16.3% in persons with CKD stages G1/G2, G3a, and G3b/G4/G5, respectively (trend P<.001). Among persons aware of MyPlate, a numerically higher proportion with CKD attempted to follow MyPlate recommendations (43.9% vs. 32.3%, P=.10); the proportion was highest among persons with moderate-to-advanced CKD (41.9%, 42.9%, and 56.9% among persons with CKD stages G1/G2, G3a, and G3b/G4/G5, respectively (trend P<.001)). Perceived and objective dietary quality (the latter based on concordance with the Dietary Approaches to Stop Hypertension diet) were slightly higher among persons with CKD relative to those without CKD. Adults with CKD have lower MyPlate awareness than adults without CKD. Enhancing diet education to persons with CKD could improve diet quality and potentially ameliorate CKD-associated complications.

Human-centered design in the development of innovative technology for the food processing medium, small and micro enterprises (MSMEs) in Uganda

Taking account of end-user perspectives is crucial in the design and development process to ensure successful technology adoption considering the evolving customer demands. This study utilized the user-centric Human Center Design (HCD) framework to re-develop food processing equipment, specifically pulpers and pasteurizers, previously developed by the Department of Agricultural and Biosystems Engineering (DABE) of Makerere University. The study implemented several interventions to augment the adoption of processing equipment among MSME agro-processors in Uganda. This included development of modified pasteurizers (biomass and electrical) and pulpers, development of user manuals, and training of processors on the use of equipment. All interventions were designed with a focus on the needs and preferences of the end users. This study demonstrates how HCD can be used to develop food processing equipment that addresses the dynamic needs of micro, small, and medium-scale agro-processors in form of production capacity and cost of ownership. The study findings can influence large-scale research and policy toward the production and adoption of user-centric food processing equipment, which in turn can provide agro-processors with increased livelihoods and reduce the major challenge of post-harvest losses.

The Association Between Food Insecurity and Census Tract-Based Indexes in an Urban Academic Reproductive Clinic: Can Residence Predict Food Insecurity in Reproductive Patients? [ID 2683613

INTRODUCTION: Identifying food-insecure patients remains a priority in reproductive clinics given nutrition’s effect on maternal health. We sought to determine the association between self-reported food insecurity with census tract-based indexes including the Childhood Opportunity Index (COI), Social Vulnerability Index (SVI), and the U.S. Department of Agriculture (USDA) low-income and low-food access areas (LILAs), to identify which indexes can help identify at-risk patients. METHODS: This is a cross-sectional survey study (UMBHP-00099693) of patients presenting for reproductive care at one urban academic center. Food insecurity was scored as greater than 0 on the 6-Item USDA Food Security Module, and living within a LILA was collected from the 2019 USDA database. We categorized social vulnerability as moderate/low/very low vulnerability or high/very high vulnerability using the SVI. We categorized childhood opportunity using the COI as very low/low and moderate/high/very high. RESULTS: Of the 179 participants in the study, 84 (47%) reported food insecurity. The following proportions lived in a: LILA 96 (54%); high/very high vulnerability tract 138 (77%); and low/very low childhood opportunity (CO) tract 144 (86%). Living within a LILA was associated with an increased odds of experiencing food insecurity (odds ratio [OR] 1.8 [1.0, 3.4]). Living within a high/very high vulnerability tract was not significantly associated with food insecurity (OR 1.2 [0.6, 2.4]), nor was living within a low/very low CO tract (OR 1.6 [0.8, 3.5]). CONCLUSION: Residence within a LILA could be associated with food insecurity in patients seeking reproductive care, which can inform the development of future clinical and geographic interventions. As one in two patients were food insecure, we recommend universal screening of all patients at reproductive appointments.

How does eligibility for GusNIP produce prescriptions relate to fruit and vegetable purchases and what factors shape the relationship? A protocol for a secondary analysis of nationally representative data in the USA

IntroductionUS Department of Agriculture (USDA) Gus Schumacher Nutrition Incentive Programme (GusNIP) produce prescription programme (PPR) ‘prescriptions’ provide eligible participants with low income, risk for diet-related chronic disease and food insecurity...

Universal School Meals During the Pandemic: A Mixed Methods Analysis of Parent Perceptions From California and Maine

BackgroundIn response to the COVID-19 pandemic, the US Congress authorized the US Department of Agriculture to waive a variety of school meal regulations and funded school meals daily for all students at no charge regardless of family income. Because federal Universal Free School Meals (UFSM) ended with the 2021-2022 school year, several states, including California and Maine, adopted state-level UFSM policies. ObjectiveThis study aimed to understand parent perceptions of school meals and the federal and new state UFSM policies in California and Maine, including potential challenges and benefits to students and households. DesignA mixed methods study design was used. A quantitative cross-sectional survey was administered, and semi-structured interviews were conducted in English and Spanish during the 2021-2022 school year. Participants/settingThe quantitative survey was administered to parents of students in elementary, middle, and high schools in rural, suburban, and urban communities in California (n = 1110) and Maine (n = 80). Qualitative interviews were then conducted with a subset of these parents in California (n = 46) and Maine (n = 20) using Zoom (Zoom Video Communications). Most survey participants (708 of 1190 [59.5%]) and interviewees (40 of 66 [60.6%]) were parents of students who were eligible for free or reduced-price meals. Main outcome measuresParents’ perceptions of UFSM, school meal quality, and experiences applying for free or reduced-price meals were examined. Analyses performedTests of proportions were used to analyze survey data. Using grounded theory, interview transcripts were analyzed qualitatively by 2 trained research assistants, applying principles of content analysis to identify themes and domains. Inter-rater reliability was conducted. ResultsParents perceived that school meals and UFSM saved families money and time, as parents had fewer meals to purchase and prepare for their children. In addition, UFSM reduced parents’ stress and reduced stigma for children and for parents, who described feelings of embarrassment when they previously filled out paperwork for free or reduced-price meals. Although parent perceptions of school meal quality and healthfulness were mixed, most parents reported feeling grateful for school meals. ConclusionsParents had mixed opinions on the quality and healthfulness of school meals, but believed UFSM saved them money and time and reduced their stress. Parents also felt UFSM reduced stigma for families.

Surveillance for highly pathogenic avian influenza A (H5N1) in a raptor rehabilitation center-2022.

An ongoing, severe outbreak of highly pathogenic avian influenza virus (HPAI) A H5N1 clade 2.3.4.4b has been circulating in wild and domestic bird populations throughout the world, reaching North America in 2021. This HPAI outbreak has exhibited unique characteristics when compared to previous outbreaks. The global distribution of disease, prolonged duration, extensive number of species and individual wild birds affected, and the large impact on the global poultry industry have all exceeded historical impacts of previous outbreaks in North America. In this study, we describe the results of HPAI surveillance conducted at The Raptor Center, a wildlife rehabilitation hospital at University of Minnesota (Saint Paul, MN, U.S.A.), from March 28th-December 31, 2022. All wild raptors admitted to the facility were tested for avian influenza viruses using polymerase chain reaction (PCR) testing. All non-negative samples were submitted to the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) National Veterinary Services Laboratories for confirmatory HPAI testing and genetic sequencing. During the study period, 996 individual birds representing 20 different species were tested for avian influenza, and 213 birds were confirmed HPAI positive. Highly pathogenic avian influenza surveillance conducted at The Raptor Center contributed 75% of the HPAI positive raptor detections within the state of Minnesota, located within the Mississippi flyway, significantly augmenting state wildlife surveillance efforts. The viral genotypes observed in birds sampled at The Raptor Center were representative of what was seen in wild bird surveillance within the Mississippi flyway during the same time frame. Wildlife rehabilitation centers provide an opportune situation to augment disease surveillance at the human, wildlife and domestic animal interface during ongoing infectious disease outbreaks.

Developing and Expanding the Networks of Peanut Seed Producers of Department of Agriculture Thailand

Developing and expanding the networks of peanut seed producers of the Department of Agriculture. The objective is to develop and expand a network of seed producers ppeanut varieties are sold with quality appropriate to the local conditions farmers can produce peanut seeds and store the seeds for their own use be sold to farmers in need in nearby areas there is an increase in peanut seeds for use within the country and selecting farmers who produce peanuts in important production areas of Thailand, including Lopburi province Lampang province and Khon Kaen province by transfer the technology for producing peanut certified seed or extension seed is choosing a planting area, planting, disease and insects, roguing, seed conditioning, harvest and seed quality. Farmers produce peanut seeds under the guidance of the Department of Agriculture with monitoring and solve problems to develop farmers to be able to produce quality peanut seeds and developed into a network of peanut seed producers of the Department of Agriculture. In 2022, there were 15 network farmers able to produce of seed yield 8,406 kg. Seed quality, Moisture 5.3%, Germination 78.7% and Purity 97.3%. In 2023, there were 30 additional network farmers able to produce of seed yield 15,478 kg. Seed quality, Moisture 6.7, Germination 79.1% and Purity 96.3% which complies with peanut seed quality standards certified seed or extension seed.

Effect of Different Organic Manures on Chilli (Capsicum annuum L.) Production in Central Region of Punjab, India

The present investigation was carried out at Experimental Farm of the Department of Agriculture, Mata Gujri College, Fatehgarh Sahib, Punjab, India during summer season, 2018. The experiment was laid out in a randomized block design (RBD) with three replications and fourteen treatments having basal dose of FYM @ 15 t ha-1 except in control. The present study was done to find out the effect of different levels of organic manures i.e. poultry manure and vermi-compost on the production of the chilli (Capsicum annuum L.).All the growth parameter i.e. plant height (cm), plant spread (cm), number of leaves plant-1, number of branches plant-1, days to 1st flowering, days to 50% flowering and yield attributes such as number of fruits plant-1, average fresh fruit weight (g), fruit length (mm), fruit breadth (mm), yield plant-1(g) were found maximum in treatment 12 (T12) which was carried out at 25% FYM+25% Poultry manure+50% Vermi-compostamong all the treatments which was statistically at par with treatment T14(50% Poultry manure+25% FYM+25% Vermi-compost) and T2 (RDF @ N-75, P-30, K-30 kg ha-1) in most of the attributes but the control (T0)shown the poor results in all the attributes. These results suggested that the optimum production of chilli can be obtained with application of 25% FYM+25% Poultry manure+50% Vermi-compost.

Extension Services-237: Everything You Need to Know

The Extension Services-237 (ES-237) is a report of University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) Extension that consists of statistics for youth ages 5–18 participating in UF/IFAS Extension youth programs and the volunteers providing service to these programs. Family Nutrition Programs (FNP) are the only youth Extension programs that are exempt from ES-237 reporting. In Florida, an annual ES-237 report is completed for each UF/IFAS Extension County office based off total 4-H enrollments entered into 4-H Online. County reports are compiled into a single state report and submitted to the National Institute of Food and Agriculture (NIFA) at the United States Department of Agriculture (USDA).

Adoption of Improved Paddy Cultivation Practices among the Farmers in Durg District, Chhattisgarh, India

The present study was conducted in Durg district of Chhattisgarh state during the years 2022–23 to study the farmers' adoption of improved paddy cultivation practices. One hundred twenty respondents were randomly selected based on the criteria that no previous study had been undertaken. Farmers were personally interviewed using a pre-tested interview schedule. The majority of respondents had a high (15.83%), medium (53.34%) and low (30.83%) adoption level, hence, there is a necessity to provide training programs through Krishi Vigyan Kendras (KVKs) and the Agricultural Departments to improve paddy cultivation methods so that the farmers can enhance their adoption levels of paddy production technology. The independent variables, namely age, education, annual income, farming experience, social participation, extension contacts, land holding, economic motivation and risk orientation were positively and significantly correlated with the adoption behaviour of paddy growers towards improved paddy production practices.

Impact of Geospatial Food Access on Acute Pancreatitis Outcomes.

Food access is an important social determinant of health and refers to geographical and infrastructural aspects of food availability. Using publicly available data on food access from the United States Department of Agriculture (USDA), geospatial analyses can identify regions with variable food access, which may impact acute pancreatitis (AP), an acute inflammatory condition characterized by unpredictable outcomes and substantial mortality. This study aimed to investigate the association of clinical outcomes in patients with AP with geospatial food access. We examined AP-related hospitalizations at a tertiary center from January 2008 to December 2018. The physical addresses were geocoded through ArcGIS Pro2.7.0 (ESRI, Redlands, CA). USDA Food Access Research Atlas defined low food access as urban areas with 33% or more of the population residing over one mile from the nearest food source. Regression analyses enabled assessment of the association between AP outcomes and food access. The study included 772 unique patients with AP residing in Massachusetts with 931 AP-related hospitalizations. One hundred and ninety-eight (25.6%) patients resided in census tracts with normalurban food access and 574 (74.4%) patients resided in tracts with low food access. AP severity per revised Atlanta classification [OR 1.88 (95%CI 1.21-2.92); p = 0.005], and 30-day AP-related readmission [OR 1.78(95%CI 1.11-2.86); p = 0.02] had significant association with food access, despite adjustment for demographics, healthcare behaviors, and comorbidities (Charlson Comorbidity Index). However, food access lacked significant association with AP-related mortality (p = 0.40) and length of stay (LOS: p = 0.99). Low food access had a significant association with 30-day AP-related readmissions and AP severity. However, mortality and LOS lacked significant association with food access. The association between nutrition, lifestyle, and AP outcomes warrants further prospective investigation.

Understanding FDACS Pesticide Inspections

Pesticide enforcement in Florida is performed by the Florida Department of Agriculture and Consumer Services (FDACS). As part of their enforcement duties, inspections of facilities, vehicles, and even people using pesticides falls under their authority. These inspections can be random or purpose driven, but all utilize the same forms to guide inspectors. Understanding the content on these forms, and purpose behind the inspections can better prepare those professionals who use pesticides to be compliant with the rules. This publication can be used to perform mock inspections and better understand the inspection process for all.

Genetic diversity, disease resistance, and environmental adaptation of Arachis duranensis L.: New insights from landscape genomics.

The genetic diversity that exists in natural populations of Arachis duranensis, the wild diploid donor of the A subgenome of cultivated tetraploid peanut, has the potential to improve crop adaptability, resilience to major pests and diseases, and drought tolerance. Despite its potential value for peanut improvement, limited research has been focused on the association between allelic variation, environmental factors, and response to early (ELS) and late leaf spot (LLS) diseases. The present study implemented a landscape genomics approach to gain a better understanding of the genetic variability of A. duranensis represented in the ex-situ peanut germplasm collection maintained at the U.S. Department of Agriculture, which spans the entire geographic range of the species in its center of origin in South America. A set of 2810 single nucleotide polymorphism (SNP) markers allowed a high-resolution genome-wide characterization of natural populations. The analysis of population structure showed a complex pattern of genetic diversity with five putative groups. The incorporation of bioclimatic variables for genotype-environment associations, using the latent factor mixed model (LFMM2) method, provided insights into the genomic signatures of environmental adaptation, and led to the identification of SNP loci whose allele frequencies were correlated with elevation, temperature, and precipitation-related variables (q < 0.05). The LFMM2 analysis for ELS and LLS detected candidate SNPs and genomic regions on chromosomes A02, A03, A04, A06, and A08. These findings highlight the importance of the application of landscape genomics in ex situ collections of peanut and other crop wild relatives to effectively identify favorable alleles and germplasm for incorporation into breeding programs. We report new sources of A. duranensis germplasm harboring adaptive allelic variation, which have the potential to be utilized in introgression breeding for a single or multiple environmental factors, as well as for resistance to leaf spot diseases.

Chemical Quality of Chhana Spread Prepared from Cow Milk Using Herbal Coagulants

The current study was carried out at the C.S.A. University of Agriculture and Technology Kanpur's department of Animal Husbandry and Dairying (Dairy Technology). Chhana spread is a popular acid coagulated milk product has fairly high nutritional value. Its mild acidic flavour, soft body and smooth texture make it highly suitable for consumption. In the experiment, chhana spread was made with cow milk with three different coagulant agents (aonla extract, lemon extract, and ginger extract), two different water-herbal coagulant ratios (90:10 and 80:20), and two different storage periods (0 and 10 days) at 5°C refrigeration temperature. Moisture, Fat, Protein, Lactose, and Ash are five chemical characteristics. The chemical quality of chhana spread made from cow milk utilising herbal coagulants was shown to be better than other spreads after a fresh day storage period, according to the study.

Choline in pregnant women: a systematic review and meta-analysis.

Choline is a critical nutrient. Inadequate choline intake during pregnancy increases the risk of adverse maternal and offspring health. A systematic review and meta-analysis were conducted to examine the current recommendations for choline intake by pregnant women, estimate the overall prevalence of pregnant women with adequate choline intake, and explore associations between maternal choline level and adverse pregnancy outcomes (APOs). Choline recommendations for pregnant women were assessed from eight nutrient guidelines of the United States, United Kingdom, Canada, Australia, Asia, International Federation of Gynecology and Obstetrics, and World Health Organization. Data on the prevalence of pregnant women with adequate choline intake and the association between maternal choline level and APOs were collected from 5 databases up to May 2023. Meta-analyses with random effects and subgroup analyses were performed for the pooled estimate of prevalence and association. Five recent nutrition guidelines from the United States (United States Department of Agriculture), United States (Food and Drug Administration), Canada, Australia, and the International Federation of Gynecology and Obstetrics have emphasized the importance of adequate choline intake for pregnant women. Of 27 publications, 19 articles explored the prevalence and 8 articles explored the association. Meta-analysis of 12 prevalence studies revealed a concerning 11.24% (95% confidence interval, 6.34-17.26) prevalence of pregnant women with adequate choline intake recommendations. A meta-analysis of 6 studies indicated a significant association between high maternal choline levels and a reduced risk of developing APOs, with an odds ratio of 0.51 (95% confidence interval, 0.40-0.65). The existing guidelines highlight the importance of choline in supporting maternal health and fetal development during pregnancy. Furthermore, a high maternal choline level was likely to be associated with a lower risk of APOs. However, 88.76% of pregnant women do not achieve the optimal choline intake. Therefore, specific policies and actions may be necessary to improve choline intake in pregnant women's care and support the well-being of pregnant women. PROSPERO registration no. CDR42023410561.