AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) (issn: 00845841) is a peer reviewed journal first published online after indexing scopus in 1982. AMA is published by Farm Machinery Industrial Research Corp and Shin-Norinsha Co. AMA publishes every subjects of general engineering and agricultural engineering.
WOS Indexed (2026)
30 Jun 2026 (Vol - 57 , Issue- 07 )
31 Jul 2026 (Vol - 57 , Issue 07 )
Aim and Scope :
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (ISSN: 00845841) is a peer-reviewed journal. The journal covers Agricultural and Biological Sciences and all sort of engineering topic. the journal's scopes are in the following fields but not limited to:
Agricultural and Biological Sciences
Electrical Engineering and Telecommunication
Electronic Engineering
Computer Science & Engineering
Civil and architectural engineering
Mechanical and Materials Engineering
Transportation Engineering
Industrial Engineering
Industrial and Commercial Design
Information Engineering
Chemical Engineering
Food Engineering
Effect of Some Preservative Solutions on Keeping Quality and Vase Life of Cut Narcissus Flowers (Narcissus tazetta L)
The vase life of cut Narcissus flowers is generally short due to bent neck and wilting. This study was conducted to determine the effects of different concentrations of PBZ (0, 30, and 60) mgL-1 and CuSo4 (0, 150, 250) % on the vase life and their interaction on relative fresh weight, and water uptake of cut narcissus flowers (Narcissus tazetta L). Distilled water was used as the control. The analysis of length variances conducted on the effects of Paclobutrazol (PBZ) and Copper sulfate (CuSo4) on the duration of petal freshness the results showed that the different length of Narcissus flowers (20 and 30) cm significantly affected the length of narcissus flowers (20) cm gave the higher value 8.556 days compared to the 30 cm length gave 8.037 days. The maximum significantly delayed petal freshness shows when put the cut flower on preservative solution containing 150 % of CuSo4 which give 8.458 days. About the different concentration of Paclobutrazol (PBZ) which effected significantly on vase life, relative fresh weight and water up take the 30 mgl-1 obtaining a higher value 10.627 days, 57.722 g and 94.980 g. While the lower value of vase life obtained on 60 mgl-1 reached 10.508 days. About the interaction between the different level of CuSo4 and different concentration of PBZ on all parameter such as duration of petal freshness, vase life observed the maximum value reached 8.917 days, 11.515 day respectively when put the cut narcissus flower for 30 cm on jar containing 0 PBZ combine with 150 % CuSo4. Also, the relative fresh weight and water uptake give the maximum value when put the flower 20 cm length on jar containing 60 mgl-1 PBZ combine with 150 % CuSo4 and 30 mgl-1 combine 150 % reached 125.797 and 63.333 g respectively.
Impact of Conservation Agriculture Practices on Soil Health and Crop Productivity under Millet-Based Cropping Systems: Review
Conservation agriculture (CA) practices have emerged as sustainable alternatives to conventional agriculture, particularly in the context of millet-based cropping systems. Many studies now available worldwide show the capacity of conservation agriculture (CA) as a sustainable system to overcome negative consequences on soil health, to prevent soil degradation and to guarantee food security. Soil health is a term used to describe the general state or quality of soil, and in an agroecosystem, soil health can be defined as the ability of the soil to respond to agricultural practices in a way that sustainably supports both agricultural production and the provision of other ecosystem services. Furthermore, CA can preserve the production and supply of soil ecosystem services while lessening the detrimental effects of traditional agricultural methods on soil condition. Agricultural development today presents before unheard-of difficulties; CA is therefore very important for the sustainability of intensive farming. Reduced tillage together with crop residue retention could lower fixation of P in soil, improve labile P content and enhance organic-P (Po) accumulation and its mineralization by phosphatases; this could be an additional benefit of conservation agriculture (CA) in soils. Currently, there are many evidences throughout the world that demonstrate the capability of conservation agriculture (CA) as a sustainable system to overcome these adverse effects on soil health, to avoid soil degradation and to ensure food security.
Design and Experimental Research on the Key Components and the Whole Unit of the Electric Ditching and Fertilizing Machine for Orchards
An electric ditching and fertilizing machine was designed for orchards to enhance the environmental sustainability of mechanized orchard fertilization and reduce production costs and labor intensity in China. The design considered the agronomic requirements of domestic miniaturized orchards. Driven by a pure electric main engine, equipment could perform ditching and fertilizing functions simultaneously. Its main working parts were composed of a fertilization assembly, a ditching cutter assembly, and a transmission block body. The work elucidated the design principles of key components and the entire unit and verified the operation quality of the model through field tests. The stability of the ditch depth reached 85.0%, and the coefficient of variation for consistency in fertilizer discharge per row reached 8.5%. The coefficient of variation for stability in total fertilizer discharge reached 6.2%, and the uniformity coefficient of fertilizer discharge reached 65.0%. The fertilizer’s broken rate was 4.0% at a forward velocity of 0.7 km/h, with a ditch depth of 16.5 cm, a ditch surface width of 18.0 cm, and a ditch bottom width of 10.0 cm. The agronomic requirements of electric ditching and fertilizing operations could be met in orchards. The research provides a reference for the in-depth research and development of miniaturized fertilizing machinery in the fruit industry.
Study on the mixing behavior of elliptical Jet in uniform flow and its application
A numerical investigation has been carried out to study the influence of nozzle geometry on the mixing characteristics and turbulent behaviors in turbulent jets. The geometry investigated was ellipse lip shape with aspect ratio of 6 and 10. By substituting an equivalent area rectangular jet a large aspect ratio rectangular jet (AR=6 and 10), the elliptical jet in uniform flow was computationally modeled using the realizablek-ε model parameters. The numerical calculation focused on time-average centerline concentration dilution of elliptical jet at the same momentum flux (Me =5.〖10〗^4) under a jet to ambient velocity ratio (R’=45) and a very high Reynolds number to ensure the turbulent condition in order to compare the numerical model with the experimental data. The model has been rigorously validated by a series of basic experiments designed to give concentration data that allows an accurate determination of the jet properties. We found out that there was no discernible difference between the two centerline dilutions of the two different aspect ratios. The examination of the cross-sectional images indicates that the spreading rate in the major and minor axis planes is totally different, the cross-sectional shape of the elliptical jet kept changing with time, large spreading is observed in the minor axis plane than that in the major-axis plane, and this causes the jet to gradually decay from its initial shape to the ultimate rounded one. Furthermore, the effect of the axis switching of elliptical jet can be clearly observed at the distance cross-section x =4D to 13.3D. The calculated results reported that the spreading and decay rate of the elliptic nozzles are higher than results for round jets. The jets issuing from the elliptic nozzle have great mixing of the surrounding fluid.
Physico-chemical characteristics and nutritional composition of fatty acids of local and imported Bovine meat raised on herbal pastry
The objective of this work is to compare the physico-chemical characteristics and nutritional composition of meat fatty acids, which indicate the quality of the local breed in Algeria and that of the imported. Twenty individuals of each breed were used and left grazing feeding in grassland on grassy pasture for 120 days. At slaughter, five animals from each group were slaughtered and samples of muscles of the rectum were removed and analytical measurements were carried out on the physicochemical level and determination of fatty acid contents. A gradual acidification for both bovines (was distinguished): up to a pHu 5.49 ± 0.16 on the 14th day conservation for the local bovine and 5.48 ± 0.14 for the imported one. The water retention capacity increased in parallel with the pH drop and reached a value of 0.56 ± 0.19 g / g at (after) the 14th days post mortem (local bovine) and 0.86 ± 0.51 g / g post-mortem (imported cattle). Total lipids were significantly higher in meat from imported cattle compared to the local cattle group (3.17 ± 0.27 VS 2.87± 0.32 g/100g muscle). The levels of saturated fatty acids are significantly higher in meat from the imported population compared to those recorded in meat from the local bovine population (2039.83 ± 27.90 VS 1696.77 ± 48.32 mg/100g muscle). Among these saturated fatty acids, palmitic acid appears significantly high in imported beef compared to local beef (1144.33 ± 19.68 VS 922.95 ± 21.10 mg/100g muscle). Regarding the content of polyunsaturated fatty acids, is very significantly higher in the meat of the local population compared to that recorded in the meat of the imported population (346.71 ± 33.44 VS 186.47 ± 16.35 mg /100g muscle) which is more in line with the recommendations of nutritionists. On the other hand, we note that linolenic acid is significantly high in meat from the local population compared to that recorded in meat from the imported population (136.30 ± 7.51 VS 103.52 ± 7.79 mg/100gmuscle). For monounsaturated fatty acids, no significant difference was observed between the two groups of cattle. The sum of omega 3 fatty acids was significantly high in meat from the local population compared to that recorded in meat from the imported population (72.33±8.35 VS 32.29 ± 4.33 mg/100g). For the lipid profile the report polyunsaturated fatty and saturated fatty acids ratio (0.20±0.02 VS 0.09±0.01) for the rectum femoris muscle were also dietetic more favorable for the local population than the imported group.