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)
07 May 2026 (Vol - 57 , Issue- 05 )
31 May 2026 (Vol - 57 , Issue 05 )
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
SPECTROPHOTOMETRIC ANALYSIS OF NECTAR SUGAR COMPOSITION BY DIFFERENT BEE PLANT SPECIES
The investigations entitled “Spectrophotometric analysis of nectar sugar composition by different bee plant species” were carried out at G.B. Pant University of Agriculture and Technology, Pantnagar during the year 2020-21. Among the three species of mustard, highest total sugar content (0.384±0.018 mg/flower) was recorded at 24 hours of flower opening in B. rapa var. yellow sarson, while minimum total sugar content was recorded just after opening of flowers (0 hours). Mean sugar concentration per flower was highest (33.34 per cent) in B. rapa var. toria, whereas least (27.26 per cent) in B. juncea. The total energy present per flower per day was highest in B. rapa var. yellow sarson with 0.37; 6.43; 8.63 and 4.58 J/flower/day at 0; 24; 48 and 72 hours respectively, and least in B. rapa var. toria with 0.25; 4.84; 3.88 and 2.75 J/flower/day at 0; 24; 48 and 72 hours. Furthermore, highest mean nectar sugar composition of glucose (51.33±0.41) was recorded in B. rapa var. toria, fructose in B. rapa var. yellow sarson (44.27±0.35) and highest sucrose concentration was found in B. juncea (0.605±0.047). Among the other eight bee forage plant species, berseem flowers were found to be richest floral nectar resource with highest total sugar content (0.672±0.009 mg/flower), total nectar sugar concentration (38 per cent), energy per flower per day (11.24 J at 72 hours) and carbohydrate composition with glucose (53.12±0.015), fructose (36.21±0.179) and sucrose concentration (4.29±0.006).
Impact of altering tree spacing on the anatomical and reproductive behaviour of Guava (Psidium guajava L.) cv. Shweta.
Guava (Psidium guajava L.) is a tropical fruit native to tropical America and is known as the “Apple of the tropics.” Guava cv. ‘Shweta’ is the most promising cultivar of guava grown in both tropics and subtropics because of its wide adaptability. In the northern states of the country, fruits are harvested in the months of August-September during the rainy season and in December-January during the winter season. A study was therefore undertaken to assess the effect of tree spacing on guava anatomical and reproductive behaviour. The trees were planted at six different spacings, i.e. T1 (6x5 m), T2 (5x5 m), T3 (5x4 m), T4 (5x3 m), T5 (4x4 m) and T6 (4x3 m) to estimate the yield under different spacings. This investigation revealed that characters like stomatal density and crotch angle increase with increased plant spacing, while leaf size has a reversed relation with spacing. Fruiting attributes for rainy and winter seasons viz. flower bud density (38.86 % and 14.32 %), fruit set (66.12 % and 44.67 %) and fruit retention (61.22 % and 50.22 %) were recorded higher in trees spaced at T1 (6x5 m) as compared to other spacings, whereas trees planted at closer spacing (4x3 m) has taken higher 76 days from fruit set to maturity. The number of fruits per tree, fruit yield per tree, fruiting density and yield efficiency (maximum in 5x5 m spacing) were increased with an increase in plant spacings (4x3 m to 6x5 m) while seed number per fruit was found to be decreased. Thus, the results revealed that guava planted at 5x3 m (267 trees/ acre) registered a higher yield per acre than other treatments. However, trees spaced at 5x5 m had significantly higher yields than trees planted at recommended spacing, i.e., 6x5 m.
Smallholding farms: Resource Allocation on Crop Productivity and Soil Fertility
A field survey in participatory mode on farm characteristics such as socio-economic conditions, farm management practices and income were carried out with a total of 240 farmers selected randomly who were further categorised into three Resource groups (RSG1-wealthy, RSG2-medium and RSG3 -poor). Farmers managed several organic and mineral resources to attain their production goals. The net flow of resources was not equal creating areas for carbon and nutrient accumulation with their depletion. Resource flow under all three groups of farmers exhibit a positive N and P balance while K mining of -2.4 kg ha-1 and -0.51 kg ha-1 was chronicled in RSG1 and RSG2, respectively. This emphasizes that nutrient stocks of individual plots within farms and village territories can differ considerably due to resource management. Thus, plots in RSG3 which received substantial amounts of nutrients from animal manure and household waste, maintain relatively high level of productivity. Non-significant variation was observed in labour productivity for all the three groups of farmers. Differences in resource ownership and bio-physical circumstances lead to different opportunities for individual farmers even within the same area. As farming is very closely associated with the environment, it will have greater impact on soil, water, landscape, and biodiversity. Hence, there is a need for region/location specific policy to provide agricultural enterprises specific price, insurance, and income support to insulate the farmers from market fluctuations and conserve the agro-ecological assets, maintain ecological balance through sustainable use of natural resources.
Optimization and characterization with antioxidant potential of C-phycocyanin from subaerial cyanobacteria
The current study investigated an effective way to extract C-phycocyanin and evaluate its antioxidant potential from the sub-aerial cyanobacteria. Two cyanobacterial species were isolated and identified as Oculatella crustae-formantes and Desertifilum dzianensis in order to standardise and characterize the Phycocyanin production from subaerial cyanobacteria and its antioxidant Potential. The specific growth rate and doubling time of the isolates were calculated. Sodium phosphate buffer (pH 7, 50mM) was found to be the most efficient buffer for C-phycocyanin yield. Further, the BG-11 medium under LED fluorescent red tube light was discovered to be the best optimization condition for enhancing C-phycocyanin synthesis from the isolates. Spectrophotometry technique and Fourier Infra red technique were utilised for the C-PC characterization. Additionally, the purified C-phycocyanin was evaluated for antioxidant activities. In both cases, the IC50value of C-PC is found to be higher than the standards used. This indicates the significant potential of sub-aerial cyanobacteria to produce highly purified phycocyanin with notable antioxidant properties, suggesting potential applications in the food and pharmaceutical industries.
An Ethnobotanical Investigation Into The Traditional Use Of Therapeutic Plants In Ain Temouchent, North-West Algeria.
To investigate the use of therapeutic herbs in Ain Temouchent, (Algeria), we interviewed 150 residents 95 women (63%) and 55 men (37%) utilizing a survey that is semi-structured. Participants were randomly selected without prior appointments. We collected primary data on plant names, parts used, preparation methods, usage categories, and diseases treated. Statistical analysis was performed using Microsoft Excel 2016 for Windows, and quantitative analysis utilized the indices RFC, UV, and IFC. Our study identified 66 medicinal plants used for various ailments, encompassing 62 genera and 29 families. The most notable families are Asteraceae and Lamiaceae (15% each), and Apiaceae (14%). Mentha spicata L. (0.35) was the most frequently cited species, followed by Citrus limon (L) Burm.f., Thymus vulgaris L. (0.33 each), Eucalyptus globulus Labill. (0.32), and Lavandula stoechas L. (0.31). The most widely utilized plant parts are leaves, fruits, and aerial parts, with oral administration having the highest prevalent method. Decoction and infusion are the primary preparation techniques. Informants showed the highest consensus on the use of these plants for respiratory (0.74) and digestive (0.61) diseases.