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
Efficacy of Asparagus racemosus (shatavari) root powder as a growth promoting and immunomodulatory feed additive for common carp, Cyprinus carpio Linn.
Efficacy of shatavari (Asparagus racemosus) root powder (SRP) as growth promoting and immuno-modulatory fish feed additive was evaluated by feeding fingerlings of freshwater carp, Cyprinus carpio (Linn.) with experimental feeds (180 days) containing SRP @ 1 (SRP1), 2 (SRP2), 3 (SRP3) and 4% (SRP4). Feed without SRP served as control (SRP0) treatment. Shatavari supplementation improved fish growth performance significantly (P≤0.05), resulting into 50.85% higher net weight gain (SPR4) and improved condition factor (k-value- 1.06) as compared to control (0.89), with an upregulated thyroid hormone (T4/T3) production. SRP also improved fish health status supported by 1.30 (SRP1) to 2.14 (SRP4) times higher Hb concentration, 1.12 (SRP1) to 1.59 (SRP4) times higher Hct values, enhanced immunity (total protein, albumin, globulin and total immunoglobulin); and positive metabolic changes in respect to liver function, lipid profile and digestive enzymes. SRP feeding also improved fish flesh quality resulting in 12.31% increase in protein content and 21.07% decrease in lipid content. Further, 10-days challenge test of SRP fed fish exhibited relative percent survival (RPS) of 30.76% (SPR3) to 70% (SPR4) against pathogenic bacteria, Aeromonas hydrophila, as compared to control fish. The results indicate that A. racemosus can serve as a potential organic feed additive to produce 56% more fish with improved flesh quality at 4% incorporation level.
Unravelling Biomass Potential and Commercial Cane Traits in Saccharum and Erianthus Introgressed Progenies
Sugarcane is a significant C4 crop that has a lot of potential to produce biofuels worldwide because its juice ferments readily to produce ethanol. The current study evaluated the juice quality, cane fibre, and biomass of 32 introgressed hybrids of Saccharum and Earianthus with co-canes. Analysis of variance has revealed presence of highly significant difference among Saccharum and Earianthus introgressed hybrids for all the traits studied. From the analysis, it was unravelled that IA 3135 (145.60 t/ha), 038701 X Co 62174-2 (142.82 t/ha), 94GUK-2454(141.90 t/ha) and GUK 00-1226 (141.67 t/ha) recorded 145.60, 142.82, 141.90 and 141.67 tons/ha of total harvestable biomass. Clones IA 3135, GUK 00-1226, 94GUK-2454 and 07-3284 recorded 19.65, 21.50, 18.95 and 19.35 per cent of juice brix at 360days coupled with high harvestable biomass of 145.60, 141.67, 141.90 and 139.35 tons/ha. A wide range of variation in quality, harvestable biomass, and cane fibre was found in the set of Saccharum and Erianthus introgression hybrids, according to the study. These hybrids can be used as energy cane for cogeneration purposes or as a special cultivar under sub-marginal management practices to take advantage of the twin traits of quality and biomass.
Relationship between Spot and Futures Markets of Pearl millet in Rajasthan: A Co-integration Analysis
This study examined the market which reacts first in Rajasthan by assessing the relationship between spot and future prices of pearl millet for a period from July 2015-16 to June 2020-21 traded in NCDEX. This paper tests the extent of market co- integration of prices of pearl millet and cluster bean among major markets of Rajasthan by using Johansen co-integration test, Granger Causality test and also captures the speed of adjustment to deviations in long run equilibrium in both crops markets by using Vector Error Correction Model. The futures and spot market prices of pearl millet in Rajasthan exhibited a significant positive co-movement in general. The Johansen’s co-integration test revealed that the futures and spot markets of cluster bean were integrated, and that of pearl millet were not integrated. There also exists a strong information flow between other markets of selected crop under study, and the price transmission was effective. To get the additional evidence as to whether and in which direction price transmission is occurring between the market pairs, Granger causality test has been used, which has confirmed futures to be the price-determining market.
Price Volatility of Futures and Spot Market of Agricultural Commodities: An Evidence from Rajasthan
Volatility transmission is a crucial price phenomenon that influences upstream production and downstream consumption in agricultural commodity markets. However, existing studies offer little evidence on how agricultural products are related to price volatility transmission along the agricultural market chain. The present study investigates the volatility dynamics in spot and futures markets of selected commodities. The time series data on monthly price of pearl millet and cluster bean required for the study was collected from the registers maintained in these selected APMCs of respective District from the year 2015-16 to 2020-21. For the period of six years viz. 2015-16 to 2020-21 monthly future and spot prices of selected agricultural commodities were collected from National Commodity and Derivative Exchange (NCDEX). We adopt ARCH and GARCH models to evaluate the time evolution of price volatility transmission. Empirical results indicate that the future price of a commodity will have a bearing on the current price. Understanding volatility gives a much better indication of the future prices than anything else. However, we find little evidence of price volatility transmission along the pearl millet and cluster bean markets. Our findings suggest that the volatility shocks in the prices of selected crops were persistent in the selected markets of crops and prices of cluster bean show more volatility than pearl millet.
Price sustainability in marketing and processing of Papaya: An Economic Analysis
In this study, we investigated the monthly wholesale price of papaya in Jaipur, Rajasthan. The study is based on primary data to explore the market power of papaya wholesalers and secondary data on papaya prices and arrivals at A.P.M.C. in Muhana mandi, Jaipur, for 10-years that is From 2007-08 to 2016-17. As a result, market power was measured by two of the indices, the concentration ratio (CR) and the Herfindahl-Hirshman index (HHI). The analysis found the selected markets to be significant, showing an upward trend in papaya prices range in the target markets. The results of the cyclical variation of papaya wholesale prices in Muhana Mandi showed a cycle of 4 years (2010-11 to 2014-15). Irregular fluctuations showed no particular periodicity in the repetitions in mandi selected for papaya. The Seasonal Price Index provides a measure of month-to-month variation in papaya prices. As for the price index, the seasonal index was highest in month of July and lowest in month of December at 109.89 and 89.43 respectively whereas, the arrivals index was inverse [peaked in December (170.42) and its lowest in July (61.87)] during the study period. An increase in the seasonal price index was observed in July when arrivals were low. Setting up a papaya processing unit requires an average of $ 294.67 of machinery and equipment. The average total cost of a papaya processing unit was $ 3265.39 ($ 1.04/kg). The average gross income for the papaya processing sector was $ 4013.03 ($ 1.28/kg). During the study period, the establishment of a papaya processing unit was profitable and financially feasible. NPW was positive, BCR was ≥1 in all treatment units, and PBP was also reliable. The main problems faced by sellers and processors were rising rental prices, rising transportation costs, rising electricity supply, high market charges and fees, labor shortages and raw material supply shortages.