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Factors Affecting the Ethanol Production from Sugar Beet Molasses 影响甜菜糖蜜生产乙醇的因素
Pub Date : 2023-04-18 DOI: 10.21608/jpd.2018.41864
A. Mohamed, A. El-Makhzangy
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引用次数: 0
Evaluation of Lactic Acid Bacteria for the Control of Aflatoxin Contamination in Silage 乳酸菌防治青贮黄曲霉毒素污染的效果评价
Pub Date : 2023-03-16 DOI: 10.11648/j.aff.20231201.14
S. Okoth, L. Wamae, I. Kariuki, L. Matumba, V. Joutsjoki, H. Korhonen
: This study evaluated the effect of lactic acid bacteria (LAB) on fermentation and aflatoxin concentrations of napier grass, whole crop green maize and whole crop dry maize plant silages, infested with aflatoxigenic mold Aspergillus flavus. The forage was chopped into 10kg portions in duplicates and inoculated with 100 ml of 10 6-7 CFU/ml, B2 27 Lb. plantarum/pentosus/paraplantarum (LAB1); B410 Lb. plantarum/pentosus/paraplantarum (LAB 2); LAB 1 + 100 ml of cultured spores (100 cfu/ml) of mold; LAB 2 + 100 ml of cultured spores (100 cfu/ml) of mold ; control 1-no addition; control 2 – mold only; control 3 – LAB 1 only; control 4 – LAB 2 only. The inoculated silage bags were sealed for 90 days and sampling done monthly to evaluate LAB, fungal counts and aflatoxin B1. Dry matter (DM), pH, crude protein (CP), neutral detergent fiber (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) were determined using AOAC methods. Mold population decreased in month one but increased thereafter. Silage type determined LAB ( p = 6.2e-08) and mold ( p = 3.9e-08) proliferation. Dry maize and napier grass silages favoured LAB and mold growth, respectively. LAB inhibited mold growth and aflatoxin production ( p = 2.2e-04). Silage pH in the third month ranged between 4.55 – 5.67 with no smell of butyric acid. Though napier and dry maize plants showed higher nutritional qualities, they favoured mold growth and aflatoxin proliferation. Aflatoxin-inhibiting LAB starters are useful in controlling aflatoxin risk in silage.
本试验研究了乳酸菌(LAB)对产黄曲霉侵染的青草、全株绿玉米和全株干玉米青贮发酵及黄曲霉毒素浓度的影响。将草料切成10kg份,每组重复,接种浓度为10 6-7 CFU/ml的100 ml, B2为27 Lb. plantarum/pentosus/ parplantarum (LAB1);B410 Lb. plantarum/pentosus/paraplantarum (LAB 2);LAB 1 +霉菌培养孢子100 ml (100 cfu/ml);LAB 2 +霉菌培养孢子100 ml (100 cfu/ml);对照1-不添加;控制2 -仅限模具;控制3 - LAB 1;控制4 - LAB 2。接种后的青贮袋密封90 d,每月取样检测LAB、真菌计数和黄曲霉毒素B1。采用AOAC法测定干物质(DM)、pH、粗蛋白质(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和酸性洗涤木质素(ADL)。霉菌数量在第1个月呈下降趋势,其后呈上升趋势。青贮类型决定LAB (p = 6.02 -08)和霉菌(p = 3.90 -08)增殖。干玉米青贮有利于乳酸菌生长,青贮有利于霉菌生长。乳酸菌对霉菌生长和黄曲霉毒素产生有抑制作用(p = 2.02 -04)。第3个月青贮pH值在4.55 ~ 5.67之间,无丁酸气味。尽管短叶玉米和干玉米的营养品质较高,但它们更有利于霉菌的生长和黄曲霉毒素的增殖。抑制黄曲霉毒素的乳酸菌发酵剂可用于控制青贮黄曲霉毒素的风险。
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引用次数: 0
Best Sowing Date for Wheat Summer Planting in Kunming 昆明小麦夏播最佳播期研究
Pub Date : 2023-03-09 DOI: 10.11648/j.aff.20231201.13
Cheng Jia-sheng, Wang Zhi-long, Qiao Xiang-mei, Wang Zhi-wei, Liu Lie, Huang Ge, Cui Yong-zhen, Yu Ya-xiong, Wu Yu
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引用次数: 0
Understanding Coastal Residents’ Perception on Urban Green Spaces in Benin, West Africa 西非贝宁沿海居民对城市绿地感知的研究
Pub Date : 2023-02-14 DOI: 10.11648/j.aff.20231201.12
Djikpo Vignon Adelphe Rosos, Teka Oscar, Djossa Bruno, Oumorou Madjidou, S. Brice
: Urban green spaces have several benefits for humans and environment as ecosystem services that are neglected and underestimated in developing countries. This study was undertaken to assess the importance of UGS to citizens’ communities, evaluate threats to their viability, and identify participatory strategies locally applicable for urban green space viability in three cities (Ouidah, Cotonou and Porto-Novo) of Benin. Surveys were conducted with a questionnaire and 360 respondents were selected from three cities. Data were analyzed belonging to socioeconomic variables such as age, gender, and educational levels. Chi-square test, correlations through corrplot packages, and Principal Component Analysis were also performed under R software. Results reveal six services: shading, air pollutants absorption, aesthetics, recreation, medicinal uses, and economic benefit. However, communities also consider urban green spaces as dumping waste, mosquito lodges, and threats to roads and buildings cracking with roots. These benefits and disturbances differed significantly between the three cities (χ 2 = 110.65; p < 0.001) and three categories of interviewees (χ 2 = 25.32; p = 0.004). Urban green spaces are also illegally cut, debarked, pruned, topped, and rooted. Otherwise, communities' willingness to participate in urban green management varies belonging to gender. Therefore, urban green spaces play an important socioeconomic role for surrounding communities and it’s urgent to ensure the viability of these ecosystems.
城市绿地作为生态系统服务,对人类和环境具有多种益处,但在发展中国家却被忽视和低估。本研究旨在评估UGS对市民社区的重要性,评估其生存能力的威胁,并确定适用于贝宁三个城市(乌伊达、科托努和波尔图-诺沃)的城市绿地生存能力的当地参与式战略。调查通过问卷进行,从三个城市选出360名受访者。数据分析属于社会经济变量,如年龄、性别和教育水平。用R软件进行卡方检验、相关分析和主成分分析。结果揭示了六项服务:遮阳,空气污染物吸收,美学,娱乐,药用和经济效益。然而,社区也认为城市绿地是倾倒垃圾、蚊虫的庇护所,对道路和建筑物的威胁。这些效益和干扰在三个城市之间差异显著(χ 2 = 110.65;P < 0.001)和三类受访者(χ 2 = 25.32;P = 0.004)。城市绿地也被非法砍伐、剥皮、修剪、覆盖和根治。此外,社区参与城市绿色管理的意愿因性别而异。因此,城市绿地对周边社区具有重要的社会经济作用,确保这些生态系统的生存能力刻不容缓。
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引用次数: 0
Carbon and Nutrients Dynamics Along a Lixisol Profile as Affected by Long-Term Organic and Mineral Fertilization 长期有机肥和矿肥对梨土剖面碳和养分动态的影响
Pub Date : 2023-01-10 DOI: 10.11648/j.aff.20231201.11
Dohan Mariam Soma, Delwendé Innocent Kiba, Ouakoltio Youssouf Abidine Traoré, Z. Gnankambary, F. Lompo, Papaoba Michel Sedogo
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引用次数: 0
Agronomic Performance of Barley as Affected by Biochar and Lime Application on Acid Soil of Hula Hagereselam Sidama, Ethiopia 生物炭和石灰对埃塞俄比亚希达玛Hula Hagereselam酸性土壤大麦农艺性能的影响
Pub Date : 2022-01-01 DOI: 10.11648/j.aff.20221103.11
Ashenafi Nigussie, Abreham Yacob
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引用次数: 0
Effects of Pigeon Pea (Cajanus cajan) Intercropping on Sorghum Crop Production and Soil Fertility Level in Case of Harari Regional State (Erer Research on Station) 以哈拉里州为例,鸽豆间作对高粱作物产量和土壤肥力水平的影响(Erer研究站)
Pub Date : 2022-01-01 DOI: 10.11648/j.aff.20221101.13
R. Elema, Alamu Tolosa, F. Yemane
: The study was conducted during 2019 main cropping season at Erer research station Babile district PA. Globally pigeon pea ( Cajanus cajan (L.) Millsp.) is the fifth most important pulse crop mainly grown in the developing countries by resource-poor farmers in drought prone areas and on degraded soils. It is a multipurpose leguminous crop that can provide food, forage, fuel wood and fodder for the small-scale farmer in subsistence agriculture. Pigeon pea is a deep-rooted and drought tolerant grain legume that adds substantial amount of organic matter to the soil and has the ability to fix up to 235 kg N/ha). Harari regional state, farmers didn’t accept drought tolerant sorghum variety, because of small harvests of total biomass. Thus why, pigeon pea sorghum intercropping can solve the problem of low availability of forage and low soil fertility in this low land area. The treatments of the experiments were, Sole sorghum (malkam) variety, Sorghum + Accession 16520, Sorghum + Accession 16527, sorghum +Accession 16528, pigeon pea Accession 16520, Pigeon pea Accession 16527 and Accession 16528 respectively. The design of the experiment was, RCBD with three replication. The result showed significant difference statistically, in terms of plant height, panicle length, and panicle diameter at 5% (table 1). The highest plant height was obtained from the treatment with sorghum intercropped with pigeon pea accession 16527 (tsegas variety). The result that obtained was statistically not significant in terms of grain yield (p < 0.01) among treatments (both sole and intercropped one). In (Table 1) was indicated that intercropping of pigeon pea Accessions had no negative significant effect on grain yields of sorghum. The maximum grain yields were obtained from T3 (sorghumX16527 pigeon pea accession); (2894) kg ha -1 ), followed by T2 (16527 pigeon pea accession) (2856) kg ha -1 respectively. The minimum grain yield obtained from sole sorghum (2339 kg ha -1 ). The most probable reason for this variation could be due to leguminous nature of pigeon pea accessions that add nitrogen nutrients to the soil and affect sorghum positively. When observed graphically, there is mean yield difference. Both land equivalent ratio and relative total yield was calculated and the obtained result is about 1.22. So this intercropped experiment is advantageous. Partial budget analysis was conducted and the experiment is economically viable.
研究于2019年主要种植季在巴比勒区Erer研究站进行。全球鸽豆(Cajanus cajan, L.)milsp .)是最重要的第五大脉冲作物,主要由发展中国家资源贫乏的农民在干旱易发地区和退化的土壤上种植。它是一种多用途的豆科作物,可以为自给农业的小农提供食物、饲料、薪柴和饲料。鸽豆是一种深根耐旱的豆科谷物,可向土壤中添加大量有机物,并具有高达235公斤N/公顷的固定能力。哈拉里州地区的农民不接受耐旱高粱品种,因为总生物量收成小。因此,鸽豆高粱间作可以解决该低地地区牧草可利用性低、土壤肥力低的问题。试验处理分别为:单高粱(malkam)品种、高粱+ 16520、高粱+ 16527、高粱+ 16528、豇豆16520、豇豆16527和16528。实验设计为RCBD三次重复。株高、穗长、穗直径在5%时差异有统计学意义(表1)。高粱间作鸽豆品种16527株高最高。单作和间作处理籽粒产量差异无统计学意义(p < 0.01)。由(表1)可知,间作鸽豆对高粱籽粒产量无显著负影响。籽粒产量最高的品种为T3(高粱x16527鸽豆品种);(2894) kg ha -1),其次是T2 (16527) (2856) kg ha -1。单株高粱的最低产量(2339公斤公顷-1)。这种差异最可能的原因可能是由于鸽豆的豆科性质,增加了土壤的氮营养,并对高粱产生了积极的影响。当用图形观察时,有平均产量差异。计算了土地等效比和相对总产量,得到的结果约为1.22。所以这种间作实验是有利的。进行了部分预算分析,经济上可行。
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引用次数: 0
Principal Component and Cluster Analyses for Quantitative Traits in Black Cumin (Nigella Sativa) 黑孜然(Nigella Sativa)数量性状的主成分聚类分析
Pub Date : 2022-01-01 DOI: 10.11648/j.aff.20221102.11
Yewubdinber Lemma, W. Mohammed, Sintayehu Adimas
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引用次数: 0
The Current Threats of Wheat Stripe Rust (Puccinia striiformis f.sp.tritici) Disease and the Consequence for Food Security in Ethiopia 当前埃塞俄比亚小麦条锈病的威胁及其对粮食安全的影响
Pub Date : 2022-01-01 DOI: 10.11648/j.aff.20221101.15
Mandefro Aslake, A. Sintayehu
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引用次数: 0
Molecular Markers: Their Importance, Types, and Applications in Modern Agriculture 分子标记的重要性、类型及其在现代农业中的应用
Pub Date : 2022-01-01 DOI: 10.11648/j.aff.20221101.12
Werkissa Yali
: To meet the expanding global population's need for food, high-yielding hybrids, varieties, and superior populations of food crops must be developed. This can be accomplished by employing a molecular marker system. Breeders can use molecular markers to choose genotypes directly because they are not affected by the environment. Crop yields must be increased to meet the needs of growing people around the world, as well as the threat of new viruses, if climate change is to be avoided in the next decades. Agriculture is confronted with rising demand from a growing population, as well as dangers of restricted production area as a result of climate change, such as water scarcity, soil salinity, or harvest weather that is unpredictable. Plant breeding's ultimate goal is to create better crops. Crop productivity is something that can be improved. Any region (locus) in an organism's genome where the DNA base sequence differs among different individuals in a population is referred to as a molecular marker. DNA markers have been created in recent years and have shown to be effective tools for cereal breeding. The overall goal of this review paper is to evaluate the role, kind, and utility of markers in in crop improvement program.
为了满足不断增长的全球人口对粮食的需求,必须开发高产杂交、品种和优质粮食作物。这可以通过采用分子标记系统来完成。育种者可以使用分子标记直接选择基因型,因为它们不受环境的影响。如果要在未来几十年避免气候变化,就必须提高作物产量,以满足世界各地日益增长的人口的需求,以及应对新病毒的威胁。农业面临着不断增长的人口带来的不断增长的需求,以及气候变化导致的生产面积受限的危险,如缺水、土壤盐碱化或不可预测的收获天气。植物育种的最终目标是培育更好的作物。作物产量是可以提高的。生物基因组中DNA碱基序列在种群中不同个体之间不同的任何区域(位点)都被称为分子标记。近年来,DNA标记被创造出来,并被证明是谷物育种的有效工具。本文的总体目标是评价标记在作物改良计划中的作用、种类和用途。
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引用次数: 2
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Agriculture, Forestry and Fisheries
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