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The etiology of fruit anthracnose in hot pepper (Capsicum frutescens) was investigated at Ibadan, Osogbo, and Ikenne in the lowland forest zone of western Nigeria. Collectotrichum capsici (Synd) Butler & Bisby was found associated with the fruit anthracnose of hot pepper in all locations. Out of 300 plants examined in all the locations, over 70 per cent had fruit anthracnose, while in some pepper fields all the fruits produced had the disease symptom. The pathogen overseasoned in pepper plant debris. A high inoculum population of 4.9×10⁶ g⁻¹ colony forming units/g was estimated in the soil of pepper fields. The seed from the infected hot pepper fruits also carried propergules of the pathogen. The fungus was also found on Lycopersicon esculentus, C. annum and Vigna unguiculata growing in and around the pepper fields. Pepper fruits infection by the disease occurs during the peak of the rainy season beginning in patches which spread later, resulting in extensive infection of the pepper field.

The purpose of this paper was to determine the antifungal activities of different solvent extracts of common plants in vitro and in vivo against banana anthracnose fungus Colletotrichum musae (Berk & M.A. Curtis) Arx, and to investigate its effects on the pathogen and identify the bio active component(s).

Extracts were obtained from leaves, tender shoots, rhizomes, bulbs, seeds and fruits of 42 naturally growing plant species following hot sequential extraction. Preliminary screening of the solvent extracts was done based on the inhibition of radial mycelial growth of C. musae following poison food technique and conidial germination inhibition by cavity slide technique. The selected extracts were assessed for their effect on harvested banana in reducing anthracnose during storage. The active components in the bio-active fractions of plant extract were identified by gas chromatography-mass spectroscopy.

Methanol extracted a larger quantity of material (between 6.9 and 12.5 per cent) than hexane or chloroform, and all its extracts were active against the test pathogen with mycelial growth inhibition ranging from 13.70 to 88.89 per cent. Zingiber officinale rhizome extract as well as Polyalthia longifolia and Clerodendrum inerme leaf extracts exhibited more than 80 per cent inhibition of mycelial growth. Total inhibition of spore germination of C. musae was recorded in Z. officinale and P. longifolia extracts at 0.3 per cent w/v and 0.5 per cent w/v concentration, respectively, while only 68 per cent spore inhibition was recorded in C. inerme at 0.5 per cent w/v concentration. Of the three plant species, Z. officinale had the best antifungal activity (18.0 per cent disease incidence; 2.2 disease severity scale) when banana fruits were dipped in the extract at a concentration of 0.5 per cent w/v at 5 days of storage in ambient condition (80-82 per cent R.H., 27 ± 1°C). The bio-active compounds in the extract of Z. officinale were identified as alpha-curcumene and zingerone.

Based on the antifungal activity, plant extract of Z. officinale can be used as an effective alternative to chemicals in controlling anthracnose pathogen in harvested banana.

Malnutrition is widespread and affects about one-third of humanity. Increasing production and consumption of vegetables is an obvious pathway to improve dietary diversity, nutrition and health. This chapter analyses how climate change is affecting vegetable production, with a special focus on the spread of insect pests and diseases. A thorough literature review was undertaken to assess current global vegetable production, the factors that affect the spread of diseases and insect pests, the implications caused by climate change, and how some of these constraints can be overcome. This study found that climate change combined with globalization, increased human mobility, and pathogen and vector evolution has increased the spread of invasive plant pathogens and other species with high fertility and dispersal. The ability to transfer genes from wild relatives into cultivated elite varieties accelerates the development of novel vegetable varieties. World Vegetable Center breeders have embarked on breeding for multiple disease resistance against a few important pathogens of global relevance and with large evolutionary potential, such as chili anthracnose and tomato bacterial wilt. The practical implications of this are that agronomic practices that enhance microbial diversity may suppress emerging plant pathogens through biological control. Grafting can effectively control soil-borne diseases and overcome abiotic stress. Biopesticides and natural enemies either alone or in combination can play a significant role in sustainable pathogen and insect pest management in vegetable production system. This chapter highlights the importance of integrated disease and pest management and the use of diverse production systems for enhanced resilience and sustainability of highly vulnerable, uniform cropping systems.

The degreening process for citrus accelerates natural colour break which changes fruit from an “unripe” green colour to the characteristically ripe orange/yellow colour. Degreening is used by producers both to extend the citrus season to make short‐term financial gains and to make fruit more attractive to consumers. This study reviews how, in an attempt to improve fruit appearance, other quality attributes may be sacrificed. The process is known to be detrimental to external fruit quality and is also suspected to be detrimental to consumption quality and shelf life. In the context of a dynamic and competitive fruit market, any reduction in product quality and consequent loss consumer satisfaction inevitably will have a negative economic impact on producers and traders. Further technical and marketing research is necessary, but among the conclusions drawn is that there is sufficient evidence already to be cautious about the widespread use of degreening.

Extraction of leaf region from the plant leaf images is a prerequisite process for species recognition, disease detection and classification and so on, which are required for crop management. Several approaches were developed to implement the process of leaf region segmentation from the background. However, most of the methods were applied to the images taken under laboratory setups or plain background, but the application of leaf segmentation methods is vital to be used on real-time cultivation field images that contain complex backgrounds. So far, the efficient method that automatically segments leaf region from the complex background exclusively for black gram plant leaf images has not been developed.

Extracting leaf regions from the complex background is cumbersome, and the proposed PLRSNet (Plant Leaf Region Segmentation Net) is one of the solutions to this problem. In this paper, a customized deep network is designed and applied to extract leaf regions from the images taken from cultivation fields.

The proposed PLRSNet compared with the state-of-the-art methods and the experimental results evident that proposed PLRSNet yields 96.9% of Similarity Index/Dice, 94.2% of Jaccard/IoU, 98.55% of Correct Detection Ratio, Total Segmentation Error of 0.059 and Average Surface Distance of 3.037, representing a significant improvement over existing methods particularly taking into account of cultivation field images.

In this work, a customized deep learning network is designed for segmenting plant leaf region under complex background and named it as a PLRSNet.

The purpose of this paper is to evaluate the banana industry in Zimbabwe focusing on postharvest losses along the value chain (VC).

The study evaluated the banana industry in Zimbabwe focusing on postharvest losses along the VC.

Total postharvest losses for 2011-2012 were estimated to be 24-27 per cent of total production with a minimum economic loss of USD69,983/annum/firm, and a total loss of more than USD500,000/annum between the VCs analysed. The bulk of the losses occurred at farm level during handling and transportation. The major factors contributing to banana postharvest losses were: unreliable transport, poor communication and coordination between producers and processors; lack of or inefficient temperature management and poor sanitation.

The study identified production capacity, quality and branding as opportunities and challenges in the banana industry. Currently, there is a 40 per cent unmet local demand for bananas and hence there are no exports. If modern banana handling systems are employed and more research and development is carried out along the VC, postharvest losses can be reduced significantly, resulting in increased income and potential expansion of the industry.

This is the first known attempt to analyse the banana VC in southern Africa and quantify postharvest losses.

The purpose of this paper is to study the managing of emergencies pertinent to public health which is critical to the well‐being of a society; as such, the management mechanisms employed should be of great interest and significance for research.

This paper first relies on extensive literature to describe the mechanism used in the USA from three aspects – organizational structure, management system, and logistics network. For the purpose of comparison, the Chinese version of the mechanism is presented from the same three aspects. The two management systems are then compared both qualitatively and quantitatively.

Deficient areas in Chinese public‐health management mechanism as well as challenging issues associated with supply chain design and coordination for emergency supplies in the context of large‐scale public health emergencies with low frequency but catastrophic impacts are found. Specifically, the following three important research problems are revealed from the comparative study: how to establish an efficient organizational structure that incorporates all the relevant entities in public‐health emergency management? How to establish an information system for emergency management that integrates disease surveillance, control, and prevention? How to design an efficient and cost‐effective logistics network to ensure prompt and sufficient delivery of emergency supplies?

To date, this research has been the first of its kind that compares two countries' emergency management systems in the context of public health management.

Banana is an important tropical fruit with high demand in the market. The ripe fruits are less resistant to transport making logistics difficult. Moreover, as a climacteric fruit, it has a short post-harvest shelf life. Edible coatings/films, including active substances, have been used as an alternative for preserving fruits and vegetables during post-harvest period. The purpose of this study was to evaluate the incorporating clove essential oil on the properties of cassava starch films and their effect on the post-harvest quality of different banana varieties.

Cassava starch films incorporating clove essential oil were developed and the films were characterized with respect to moisture, thickness, solubility, water vapor permeability (WVP), biodegradability, color and in vitro antifungal activity. Cultivars such as Prata-Anã, Grand Nine, BRS Tropical and BRS Conquista were coated with cassava starch, cassava starch film with clove essential oil (CSEO) and polyvinyl polychloride (PVC). The quality of fruits was monitored during eight storage days using mass loss, total soluble solids content (TSS) and titratable acidity (TTA).

Incorporation of clove essential oil significantly increased film thickness, reduced moisture content, solubility and WVP (p < 0.05) and did not affect the biodegradability and color of the films. The essential oil incorporated films showed antifungal activity against the fungi Colletotrichum gloeosporioides and Colletotrichum musae, but not against the yeast Saccharomyces bourladii. CSEO and PVC coating were more efficient in reducing the mass loss, SS content and TTA of the coated fruits in all varieties studied. Both CSEO and PVC coatings improve the quality attributes such as TSS and TTA and reduced mass loss, of the banana varieties such as Prata-Anã, Grand Nine, BRS Tropical and BRS Conquista during storage.

The active film with essential oil showed antifungal activity and essential oil can be incorporated into other food systems. This study approaches a new possibility of film coating with essential oil for a banana that showed minimum weight loss and satisfactory quality and increased shelf life. This film coating demonstrates biodegradable characteristics that could be eco-friendly and sustainable to consumers.

The inspection of food labellings is a long and monotonous routine but nonetheless, a cornerstone of consumer protection. For many years complaints have been made of the loopholes and anomalies in the statutory requirements for labelling, particularly in descriptive names and declarations of ingredients. The long‐awaited report of the Food Standards Committee on Food Labelling has now appeared and been reviewed at some length in the present and previous issues of the B.F.J. The Committee have taken a long time over their subject, but their review of it has been most thorough. Their recommendations are in the main reasonable and whilst some are new and others, if adopted, could have a not inconsiderable influence on manufacturing practice, they do not disturb the present structure of food labelling set up by the Order of 1953, which was quite a landmark in its day.