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. Lizi Jiaohuan Yu Xifu/Ion Exchange and Adsorption Fa yi xue za zhi
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:
Indian mustard [Brassica juncea (L.) Czern & Coss] is an important oilseed crop. Powdery mildew of mustard incited by Erysiphe cruciferarum (Opiz ex Junell) is the most important disease that causes a maximum reduction in yield and quality of mustard seed. The resistance of plants to various pathogens depends on the synthesis and level of various defense enzymes like hydrolyses peroxidases, phenol and PR-Protein. The present study focused on powdery mildew and its biochemical correlation with TSS, PR-Proteins and phenols content. The field studies observed that this disease incidence data were correlated with biochemical changes and levels of TSS, PR-protein and phenols activities. Among biochemical basis of resistance in mustard, TSS and Protein are maximum in healthy plants compared to infected plants, and Phenol content is minimum in healthy plants compared to infected plants were observed in leaves of infected plants with Erysiphe cruciferarum compared to the healthy ones. Biochemical changes in total soluble sugars, protein and phenol content were played a significant role in imparting resistance against this disease. A similar trend in these biochemical was also observed at tender and maturing stages of leaves.
The present investigation was carried out to assess PCA and genetic diversity in linseed germplasm during Rabi 2019-20 at Agricultural Research Station, Ummedganj, Kota, Rajasthan to determine level of variability among twenty nine rice genotypes in randomised block design using principal component analysis. First three principal components exhibited more than one Eigen values and accounted for 74.02% percent of total variation. PC1 accounted 42.79% of the total variability contributed by the traits like number of capsule per plant, seed per capsule, thousand grain weight and branches per plant whereas PC2 account 17.60% of the total variation that was contributed by the traits viz. number of capsule per plant, seed per capsule, plant stand, plant height and days to 50% flowering. PC3 had the contribution from the characters like plant height and 1000-grain weight. Thus, the results revealed vast genetic variation and the traits contributing for the variation in linseed genotypes which can be used for various breeding programmes for improvement in yield and quality. Cluster I consisted of 11 cultivars showed maximum mean grain yield. Cluster I had genotypes having higher mean values for characters like seed yield, thousand weight and also desirable for early flowering trait. Cluster VI had the highest mean values yield contributing traits like branches per plant, seed per capsule and capsule per pod that had significant positive correlation with grain yield. Cultivars having favourable characteristics from these clusters could be employed as prospective donors in a future hybridization programme to generate high yielders.
An investigation was conducted at Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu (SKUAST–Jammu) to study the bio-intensification possibilities in different cropping systems. The experiment was laid out in randomized block design (factorial) with 15 treatments and three replications. Among different crop bio-intensification systems, Wheat + Mustard (6:1) – Moongbean– Maize (Bed) + Cowpea (B) recorded higher Wheat equivalent yield (WEY) (142.64 q/ha and 144.86 q/ha), crop profitability (Rs 337/ha /day and Rs 352/ha/day), system profitability (Rs 304/ha/day and Rs. 324/ha/day), production efficiency (43.36 kg/ha/day and 43.12 kg/ha/day) during both years of experimentation. With regard to microbial population, higher population of bacteria (13.55x106 cfu/g and 15.92 x 106 cfu/g), fungi (20.17 x 106 cfu/g and 22.18 x 106 cfu/g) and actinomycetes (18.27x106 cfu/g and 20.10 × 106 cfu/g) was recorded in Wheat (FIRB)+Lentil (B) – Moongbean – Brown Manuring +Rice (F) + Moongbean (Bed) as compared to rest of the treatments during 1st and 2nd year of experimentation. Amongst the nutrient management practices, 100% inorganic nutrient management practice recorded higher WEY (12585 kg/ha and 12740 kg/ha), crop profitability (Rs 360/ha/day and Rs 374/ha/day), system profitability (Rs 314/ha/day and Rs 332/ha/day), production efficiency (39.58 kg/ha/day and 39.32 kg/ha/day) during both years of experimentation. Thus, application of 100% inorganic nutrient management practice in Wheat + Mustard (6:1) – Moongbean– Maize (Bed)+Cowpea(B) crop bio-intensification system has yielded maximum WEY of 127.40 q/ ha with net returns (Rs 121033) and B:C ratio of 1.90.
The present investigation was carried out during Rabi 2019 at Agricultural Research Station, Ummedganj, Kota Rajasthan, India to determine level of variability among twenty five rice genotypes in randomised block design using principal component analysis. First three principal components exhibited more than one Eigen values and accounted for 83.91 percent of total variation. PC1 accounted 49.18 % of the total variability contributed by the traits like number of grains per panicle, 1000-grain weight, grain yield per plant and amylase content, whereas PC2 account 24.39 % of the total variation that was contributed by the traits viz. number of productive tillers per plant, days to 50 % flowering, number of grains per panicle, days to maturity and plant height. PC3 had the contribution from the characters like productive tillers per plant, 1000-grain weight and grain yield per plant. Thus, the results revealed vast genetic variation and the traits contributing for the variation in rice genotypes can be used for various breeding programmes for improvement in yield and quality. Cluster I consisted of 7 cultivars showed maximum mean grain yield. Maximum inter cluster distance was recorded between cluster VI and VII. Cluster I had the highest mean values for grain yield and number of productive tillers per plant. Cluster VI had the highest mean values for 1000-grain weight, 1000-grain weight and Panicle length that had significant positive correlation with grain yield. The cultivars from these clusters with desirable characters may be used as potential donor for future hybridization program to develop high yielders.
Wheat is the one of the major cereal crop grown under subcontinent of India which faces deficit soil fertility and problem of weed infestation. Optimum fertilization and weed management plays an important role in yield enhancement of wheat in the arid region under loamy sand soil. In the present study, Chenopodium murale contributed the maximum population to total weeds followed by Chenopodium album before and after spray of herbicides. fertilization with 150-50 kg NP/ha showed significant increase in plant height and dry matter at 35 and 50 DAS stage over fertilization of 120-40 kg N-P/ha and 90-30 kg N-P/ha while remain at par with 120-40 kg N-P/ha fertilization in respect of plant height and dry matter at 75 DAS and harvest stage, grain yield straw yield and biological yield. Available nitrogen in soil after crop harvest significantly increase upto 120-40 kg N-P/ha, however available phosphorus increase up to 150-50 kg NP/ha. Among herbicidal weed management, clodinafop-propargyl 15% + metsulfuron-methyl 1% at 64 g/ha was found to be the most effective for better wheat growth (plant height and dry matter), higher yield (grain, straw and biological yield) and available soil nutrients (N and P) after harvest of crop.