Agricultural sciences最新文献_第4页

Effect of combined application of herbicides and foliar fertilizers on growth, development and yield of Knezha 509 maize hybrid 除草剂与叶面肥配施对knezh509玉米杂交种生长发育及产量的影响

Agricultural sciences Pub Date : 2023-06-30 DOI: 10.22620/agrisci.2023.37.004

Sonya Goranovska

引用次数: 0

Changes in water relations, leaf gas exchange and elemental composition of peach leaves infected with Taphrina deformans (Berk.) Tul 桃叶片水关系、叶片气体交换及元素组成的变化图尔

Agricultural sciences Pub Date : 2023-06-30 DOI: 10.22620/agrisci.2023.37.009

N. Piperkova

引用次数: 2

Study of agrorobot resistance to movement during plant protection operations 植保作业中农业机器人运动阻力的研究

Agricultural sciences Pub Date : 2023-06-30 DOI: 10.22620/agrisci.2023.37.007

G. Ivanov

引用次数: 0

Voltage dependence of rock meal based foliar fertilizers with ISR properties, water solutions 具有ISR特性的岩粉基叶面肥料的电压依赖性，水溶液

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.007

D. Ganchev

引用次数: 0

Application of polyphasic approach for identification of epiphytic fungi isolated from wheat grains 多相法在小麦附生真菌鉴定中的应用

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.008

Nevin Emin, K. Dimitrova, Y. Kartalska

{"title":"Application of polyphasic approach for identification of epiphytic fungi isolated from wheat grains","authors":"Nevin Emin, K. Dimitrova, Y. Kartalska","doi":"10.22620/agrisci.2023.36.008","DOIUrl":"https://doi.org/10.22620/agrisci.2023.36.008","url":null,"abstract":"In this study, epiphytic fungi were isolated from wheat seeds (Triticum aestivum L) and a polyphasic approach for their identification was applied. The initial morphological characterisation was done on selected twenty-tree strains and continued with their identification based on the carbon utilisation pattern according to the Biolog OmniLog system protocol (Hayward, CA, USA). Throughout the isolated strains, the Biolog data indicated predominance of the genera Aspergillus, Penicillium and Fusarium. The carbon utilisation pattern of five strains assigned them to several different from aforementioned genera and due to their scarcity they were not included in the current study. The indicated by the Biolog genus designation of the strains was used as a guideline for the further molecular identification of seventeen strains from the predominant genera. Molecular identification was based on a polymerase chain reaction (PCR) with universal primers, which targeted the internal transcribed spacer (ITS) region of rDNA gene. The PCR fragments were sequenced and after applying a BLAST algorithm, a high percentage of similarity was found for eleven strains. At the species level, the Biolog and molecular technique showed a discrepancy in the identification of two strains. The procedure of identification was unsuccessful for six strains either due to insufficient quantity of the PCR product or the lack of sufficient similarity of the fragments to the GenBank database. Current study showed that the unbiased identification of epiphytic fungi requires a polyphasic approach, which applies morphological, physiological and molecular techniques.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77873088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agro-morphological assessment of three alternative grain legume crops 三种可替代豆科作物的农业形态评价

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.005

Sofiya Petrova

{"title":"Agro-morphological assessment of three alternative grain legume crops","authors":"Sofiya Petrova","doi":"10.22620/agrisci.2023.36.005","DOIUrl":"https://doi.org/10.22620/agrisci.2023.36.005","url":null,"abstract":"The grain legume crops are an important component of agricultural biodiversity and food security, because of the rich protein food and fodder, and a source of income. The aim of the current study was to evaluate the agro-morphological diversity of three alternative grain legume crops (Cicer arietinum L., Lathyrus sp. L. and Vicia ervilia L.) and to select the best accessions with a high yield potential. The assessment of the agro-morphological traits was performed according to the International Descriptors’ of each crop. High variation for Lathyrus sp. L. accessions was observed in the following agronomic traits: plant height, height to the first pod, number of pods per plant, number of grains per plant, mass of grains per plant and mass of 100 grains; for Cicer arietinum L. - number of grains per plant and mass of grains per plant and for Vicia ervilia L. - height to the first pod, number of pods per plant, number of grains per plant and mass of grains per plant. The variability of quantitative traits has shown a high genetic diversity in the evaluated accessions from alternative grain legume collections. The group of early grasspea accessions embraced twelve accessions. Three local chickpea populations had the shortest vegetative period from 86.7 days. Two bitter vetch accessions from the early group possessed positive yield traits. Based on the results obtained from this study, the best accessions were selected, for example: from Cicer arietinum L. - seven accessions; from Lathyrus sp. L. – five accessions and from Vicia ervilia L. – five accessions. According to these results, it can be concluded that the best accessions will be used for the next experimental trials and will be recommended to all interested researchers, breeders and farmers.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88737936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of weed infestation and pea (Pisum sativum (Linn.)) cropping system on the beneficial and harmful entomofauna 杂草侵染与豌豆种植制度对有益和有害昆虫区系的影响

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.001

{"title":"The influence of weed infestation and pea (Pisum sativum (Linn.)) cropping system on the beneficial and harmful entomofauna","authors":"","doi":"10.22620/agrisci.2023.36.001","DOIUrl":"https://doi.org/10.22620/agrisci.2023.36.001","url":null,"abstract":"The experiment was carried out in the conventional and organic experimental fields of the Institute of Agriculture - Karnobat, in the period 2019 - 2022. The aim of the experiment was to study the influence of weed infestation and cropping system of pea (Pisum sativum (Linn.)) on the beneficial and harmful entomofauna. Six and seven species of insects from seven families and three orders were found to damage pea in organic and conventional farming, respectively. Their density was higher in conventional farming. The most economically important and the most widespread pest in both types of cropping was the aphid Acyrthosiphon pisum (Harris, 1776). Of the beneficial insects, thirteen species were found in pea in organic and eleven in conventional farming, from eight families and five orders. Greater species diversity and higher numbers were observed in organically grown pea during all four years of the study. The absence of herbicide treatment in organic farming and the presence of more blooming vegetation stimulate the multiplication of beneficial entomofauna, regulating the population density of the aphids in pea. The correlations between the blooming vegetation and the beneficial entomofauna and between the beneficial and harmful entomofauna have been demonstrated.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73717859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production Function Analysis for the Semi-Subsistence Irish Potato Production Systems and the Farmers’ Economic Well-Being in Santa, Cameroon 半自给爱尔兰马铃薯生产系统与喀麦隆圣塔农民经济福利的生产函数分析

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.002

M. D. Tambi, Kaseh Edward Bobuin

{"title":"Production Function Analysis for the Semi-Subsistence Irish Potato Production Systems and the Farmers’ Economic Well-Being in Santa, Cameroon","authors":"M. D. Tambi, Kaseh Edward Bobuin","doi":"10.22620/agrisci.2023.36.002","DOIUrl":"https://doi.org/10.22620/agrisci.2023.36.002","url":null,"abstract":"The objectives targeted in this study are: to identify the drivers of the semi-subsistence Irish potato production; to evaluate the effect of the semi-subsistence Irish potato production on the farmer’s economic well-being and to identify the constraints associated with the semi-subsistence Irish potato production in Santa, Cameroon. The study made use of a Cobb Douglas production function to analyze the results. Primary data was collected via simple random sampling. The results showed that startup capital, quantity of seeds planted, quantity of fertilizer applied, level of education, labour input per season and pesticide usage all had a positive and significant effect on the quantity of Irish potato produced. It was also observed that the semi-subsistence Irish potato production had a positive effect on the farmer’s economic well-being. Further, insufficient capital, climate variability, fluctuation in market price, poor farm to market roads, lack of improved seed varieties, high cost of input, pest and disease are the major constraints to the Irish potato production. The study suggests that the Irish potato production should be encouraged in Santa by focusing more on its specific determinants.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78838632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of extractants for soil available potassium determination in the selected soils of Kwara state, Nigeria 在尼日利亚夸拉州选定土壤中测定土壤速效钾的萃取剂评价

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.003

K. Affinnih

{"title":"Assessment of extractants for soil available potassium determination in the selected soils of Kwara state, Nigeria","authors":"K. Affinnih","doi":"10.22620/agrisci.2023.36.003","DOIUrl":"https://doi.org/10.22620/agrisci.2023.36.003","url":null,"abstract":"Response of potassium (K) correlated with extracted K using five laboratory methods: neutral N NH4OAc pH 7.0; NH4OAc pH 4.8, 0.01M CaCl2, 1N Hot HNO3 and 0.5N NaHCO3 pH 7.0 by sorghum were determined in four selected soils from twenty locations in Kwara State, Nigeria in the green house to ascertain the ideal procedure for routine analysis. Regression equations were derived for each soil between K uptake by sorghum and level of K applied and, by extrapolation, the A-value, which represented the amount of soil K available as applied K, was determined. The data from the five laboratory methods were correlated with A-value, the zero-level K uptake, and with one another. The results showed that 0.01M CaCl2 only, extracted more K than the A-value, which was greater than the K extracted by the other methods. The data of all methods were, however, significantly correlated (p<0.05) with A-value while zero-level K uptake had a highly significant correlation with data of 0.01M CaCl2 (0.99) and low values with that of the other methods. The neutral normal NH4OAc pH 7.0 correlated relatively high and positively with N NH4OAc pH 4.8, 0.01M CaCl2, and 0.5N NaHCO3 pH 7.0, but negatively (-0.60) with 1N Hot HNO3. However, the neutral N NH4OAc pH 7.0; NH4OAc pH 4.8 correlated relatively higher and positively with one another (0.93) although they both extracted unequal amounts of K. Thus, both could be conveniently handled in the routine work in place of hot 1 N HNO3 for the evaluation of K availability indices for sorghum in the region.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73095085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy metal accumulation and chemical composition of the essential oils of yarrow (Achillea millefolium L.) cultivated on heavy metal-contaminated soils 重金属污染土壤上栽培蓍草精油的重金属积累和化学成分

Agricultural sciences Pub Date : 2023-03-27 DOI: 10.22620/agrisci.2023.36.006

{"title":"Heavy metal accumulation and chemical composition of the essential oils of yarrow (Achillea millefolium L.) cultivated on heavy metal-contaminated soils","authors":"","doi":"10.22620/agrisci.2023.36.006","DOIUrl":"https://doi.org/10.22620/agrisci.2023.36.006","url":null,"abstract":"Comparative research has been conducted to determine the content of heavy metals and the chemical composition of yarrow oils, as well as to identify the possibility of yarrow growth on soils contaminated by heavy metals. The experimental plots were situated at different distances of 0.5 km and 15 km, respectively, from the source of pollution, the Non-Ferrous-Metal Works (MFMW) near Plovdiv, Bulgaria. On reaching the flowering stage, the yarrow plants were gathered. The content of heavy metals in flowers was determined by microwave mineralization and analyzed by ICP. The oils were obtained from the flowers of the plant by hydro distillation and analyzed by gas chromatography-mass spectrometry (GC-MS) technique. Heavy metals do not affect the development of yarrow and the quality and quantity of oil obtained from it. The heavy metal content of yarrow essential oil is very low and is not affected by the degree of heavy metal contamination of the soil. Twenty components were identified in oils. In yarrow oil, the highest content was oxygenated sesquiterpenes (36-38%), followed by sesquiterpene hydrocarbons (24-25%), oxygenated monoterpenes (20-21%) and monoterpene hydrocarbons (17-19%). For the first time, it is reported yarrow oil with mixed α-bisabolol oxide B, α-bisabolol, and β-caryophyllene chemotype. The essential oil of yarrow can be a valuable product for the farmers from polluted regions.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82779572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0