scholarly journals Control of Rots and Spoilage of Agricultural Products: A Review

2014 ◽  
Vol 18 ◽  
pp. 63-72 ◽  
Author(s):  
S.N. Deshi ◽  
D.L. Wonang ◽  
B.S. Dafur

The most important losses in agricultural production which involve the greatest costs on the farm economy occur postharvest. It is estimated that worldwide between 10 and 40% losses of agricultural produce occur postharvest. Losses are more severe in developing than developed nations of the world. Several species of fungi and in some cases bacteria participate in postharvest deterioration and rots of tubers and agro- produce. These include species of Aspergillus, Fusarium, Colletotrichum, Macrophomina, Penicillium and Rhizopus amongst several others. In a bid to control these storage diseases several control techniques including physical, biological, and chemical and in recent times plant-based pesticides are employed. Chemical control has been identified as the most popular and most effective means of controlling plant diseases. However, it is being de-emphasized due largely to mammalian toxicity occasioned by chemical residues in crops. This in addition to many other demerits on ecological health and build-up of pathogens’ resistance to some of the most effective fungicides have prompted search for alternatives. Recently in plant pathology many tropical plants are being screened for fungitoxic properties. This review presents highlights of the different control techniques for control of myco- induced storage rots of tubers and agricultural products in the tropics.

2020 ◽  
Vol 5 (1) ◽  
pp. 404-440 ◽  
Author(s):  
Mehrdad Alizadeh ◽  
Yalda Vasebi ◽  
Naser Safaie

AbstractThe purpose of this article was to give a comprehensive review of the published research works on biological control of different fungal, bacterial, and nematode plant diseases in Iran from 1992 to 2018. Plant pathogens cause economical loss in many agricultural products in Iran. In an attempt to prevent these serious losses, chemical control measures have usually been applied to reduce diseases in farms, gardens, and greenhouses. In recent decades, using the biological control against plant diseases has been considered as a beneficial and alternative method to chemical control due to its potential in integrated plant disease management as well as the increasing yield in an eco-friendly manner. Based on the reported studies, various species of Trichoderma, Pseudomonas, and Bacillus were the most common biocontrol agents with the ability to control the wide range of plant pathogens in Iran from lab to the greenhouse and field conditions.


Agriculture is the backbone and plays a vital role in many Asian countries. Farmers mainly depend on their agricultural produce for their living. A report says one-third of the farmers income account’s for the agricultural loss which is primarily due to plant diseases. To combat this farmers are in need of a early plant disease identification mechanism. Observation of individual plants in the farm for detecting the disease is labor-intensive and time consuming work, if the farm is vast and multiple plants are cultivated then it’s even worse. To solve such issues, current technologies like the Internet of Things (IoT) and artificial intelligence (AI) and Machine Learning (ML) are used to predict the diseases more effectively. Farmers usually detect plant diseases with the help of images captured manually and analyzed separately by experts. The proposed system renders an efficient solution for detecting multiple diseases in several plant varieties. The system is designed to detect and recognize several plant varieties, specifically pepper, grapes, and strawberry. The proposed system discovers various plant’s various diseases based on the inputs obtained by capturing images from a built-in camera present in the Autonomous rover. The rover also record’s it’s GPS location and makes a map of the entire farm traced and checked by the robot. The images are processed and are classified into their respective categories using deep learning algorithms. Convolutional neural networks the powerful methodology for image classification is the underlying principle applied. The deep learning model’s architecture namely, VGG16 and InceptionResNetV2, are used to train the model. These models are primarily made of convolutional layers. On testing, we recorded am accuracy of 93.21% was obtained from VGG16, and 95.24% from InceptionResNetV2.


2018 ◽  
Vol 31 (1-2) ◽  
pp. 108-124
Author(s):  
María DeGuzmán

How is the field of Latina/o Studies concerning itself with “botanical epistemologies” in light of what scholar Claudia Milian has described as “environmental forecasts and new forms of LatinX displacements and transitions”? How have botanical epistemologies been associated with LatinX populations in the United States and its territories? How is the present-day “order of things” bringing social, economic, cultural, and ideological pressures to bear upon these epistemologies? As Chipper Wichman, Director of the National Tropical Botanical Garden, explains, “plants hold the answer to mitigating climate change, feeding the hungry, providing cures for diseases, and much more” and “80 percent or more of the planet’s biodiversity exists in the tropics and approximately one third of all tropical plants are threatened with extinction.” Plants provide living creatures with food and medicines and are responsible for producing the oxygen that makes life possible. However, “the loss of biodiversity-based cultural knowledge [of plants] is widely reported, globally as well as at the level of communities and individuals.” Specifically, LatinXs have not received credit for their botanical knowledge or its practices. This essay unearths how Latina/o Studies can help us to think through the relations among “LatinX,” botany, and the crossroads of survival and extinction—what the author proposes as “LatinX botanical epistemologies.”


2016 ◽  
Vol 14 (1) ◽  
pp. 134-141 ◽  
Author(s):  
M Zaker

The use of chemical pesticides for controlling various plant diseases is still a common practice especially in developing countries. Although with the application of chemical fungicides, plant diseases can be controlled but the hazardous impacts of such products in human health and environment are well known. Moreover, with their excess applications pest resistance may exist. Natural plant products have been found effective in plant disease managements and could be safely incorporated as suitable alternatives for synthetic fungicides. It is estimated that there are more than 250,000 higher plant species on earth that can be evaluated for their antimicrobial bioactive chemical compounds. During last several decades researchers have evaluated plant extracts and oils against plant pathogens, valuable results have been achieved and some commercially botanical formulations have been prepared and marketed. If we are supposed to move toward production of safer agricultural products, more attention and effort are still needed for production of more commercially botanical fungicides in the near future. The organic agriculture cannot rely on a limited number of commercially pesticides of natural origin, therefore it seems that more researches in formulating more commercially botanical products as fungicides are still needed.The Agriculturists 2016; 14(1) 134-141


Author(s):  
George J. Giummarra ◽  
Graham Foley ◽  
Stephen Cropley

Road dust can degrade agricultural produce, affect health, reduce road safety, increase wear and tear on vehicles, and increase the rate of deterioration of the roadway. In October 1996, Australian Road Research Board Transport Research completed and published a study of various dust-control techniques. That report encompassed a worldwide literature search on various measures to control dust and a survey of municipal councils and other road authorities across Australia and New Zealand to ascertain what experiences people have had with the use of dust suppressants. The outcome of this study is to provide a guide to the reported effectiveness of particular dust suppressants under given circumstances and other methods to better control dust emissions.


2011 ◽  
Vol 361-363 ◽  
pp. 1679-1683
Author(s):  
Jian Hua Qu ◽  
Xin Sheng Yao ◽  
Ji Lai Ying

Analyzing the typical management pattern of agricultural produce logistics, this paper discovered that the dominant of the pattern and got more profit because of the information fully. In view of this status quo, the agricultural products logistics management pattern based on information center was built. The advantages of the pattern were explained. The pattern was demonstrated by the orange logistics management pattern based on information share,the result showed that the pattern is effective and practicable.


2010 ◽  
Vol 442 ◽  
pp. 431-437 ◽  
Author(s):  
J.S. Bhatti ◽  
R.A. Pasha

Vibration control using combination of piezoelectric material and electrical circuits can remove the vibration energy from the host structure. The need for passive damping techniques arises to avoid the complexities and energy requirements associated with other vibration control techniques. Passive damping technique for reduction of vibration of structures by introduction of shunted piezoelectric patch is presented in this study. Finite element analysis is performed for a cantilever beam with shunted piezoelectric patch on it. The prediction of the model is validated against experimental published results. The obtained results demonstrate the feasibility of using piezoelectric patches with passive shunting as effective means for damping out the vibrations. The aim of this research work is the advancement of the coupled field analysis for structural vibration control with advanced methodology and to promote the design and analysis activities in the field of passive vibration control techniques using smart structures. Results obtained showed up to 86% reduction in the amplitude of the host structure which shows good agreement with published experimental results.


2017 ◽  
Vol 21 (6) ◽  
pp. 150-159
Author(s):  
S. V. Shmanev ◽  
E. I. Moskvitina ◽  
D. E. Morkovkin

Today a special role in the social and economic development of the Russian Federation is played by the policy on import substitution announced by the leadership of the country, which has become a powerful stimulus for improving the national economy under the conditions of Western sanctions and the response from the Russian Federation. The formation of a full-fledged legislation in the innovation sphere and the creation of an effective system for stimulating innovative reproduction can be among the priority tasks of the state policy of the Russian Federation to strengthen innovative opportunities for the development of Russian agricultural regions. The authors note that innovative, including nanotechnological products, used in agricultural production, diagnostics and prevention of animal and plant diseases, primary and industrial processing of agricultural products become widespread in Russia. Thus, the problem of creating a competence center of import substitution of agricultural products as a tool for innovative development of the real sector of the economy is relevant at the present time. The article is devoted to the problem of solving the problem of import substitution in the agricultural sector at the municipal level. It is proposed to create a competence center for import substitution of agricultural products (the Center) in the Petushinsky district of the Vladimir region. The main tasks and functions of the Center are determined. Particular attention is paid to issues of stimulating innovation. In the conclusion of the study, the authors came to the understanding that the main problem on the way to creating competence centers in agriculture today is a lack of understanding of how to form and run a really working mechanism for updating and transferring new knowledge. System work is necessary: it is advisable to develop a concept for the establishment of the Center, provide conditions for the expert assessment of this concept to identify possible risks, determine the amount of required funding and identify sources of investment, appoint responsible executives for the implementation of the concept, approve the forms of preliminary, current and final control of project implementation and etc.


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