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With advances in agro-technology, cucurbits are now being grown throughout the year. However, they are prone to biotic and abiotic stresses resulting in significant yield loss. Sustainable management of such stresses is a complex issue in the intensive cultivation of cucurbits involving high levels of fertilization and irrigation. Further, under the changing climatic conditions, pest scenarios vary constantly, with invasive alien species of pests becoming more common as a result of free trade and frequent international travel. As such, agrochemicals are being used as powerful weapons to combat the increasing number of pests and diseases. Lack of proper crop management technologies, inaccurate diagnosis, and indiscriminate and excessive use of pesticides are major causes of pesticide resistance and resurgence, environmental pollution, and hazards to the non-target biota. This comprehensive book provides essential insights into the management of biotic and abiotic stresses in cucurbit cultivation and re-evaluating the role of agrochemicals, and gathers information on insect pests, mites, nematodes, diseases and weeds, as well as on their sustainable management from scattered sources. Written in language that is easy to understand and including high-quality photographs, it is a valuable resource for students, researchers, plant protection specialists, extension workers, and growers.
Among the leading vegetable producing countries in the world, India ranks second only after China. Vegetables play pivotal role in mitigating nutritional requirement of the soceity as well as providing employment oppurtunity specially in the agriculture dominated rural agrarian economy of the developing countries like India. Among different kinds of vegetables, cucurbits are a diverse group of vegetables (include pumpkin, bitter gourd, water melon, cucumber, pointed gourd, ridge gourd, bottle gourd etc) cultivated widely all over the South Asian countries including Indian sub-continent. These are basically worm season crops and fetch several biotic and abiotic stresses during their life stages. These stressess considerably affect yield potentiality of several cucurbitaceous vegetables quantitatively as well as qualitatively. Climatic changes and increment in cropping intensity reflected in a remarkable and rapid shift of vegetable ecosystem that ultimately increasing these stresses day by day. Biotic stresses like insect, mite and nematode pests etc. are the most significant biotic stresses which are responsonible limiting yeild reduction as well as quality deterioration of produces. Application of hazardous toxic chemicals to combat the pest problems of cucurbits not only results in residual toxicity in vegetables but also destabilising agro-ecosystem. Again, due to change in climatic condition and introduction of modern agro-technology these problems are becoming very very complex. In this perspectives, updated and alternative information with regard to crop management of cucurbits is a dire need of the hour for successful and remunerative cucurbit production. The book covers all the issues related with these aspects like insect pests, diseases, mites, nematode parasites weeds, environmental stresses, nutrients elaborately with latest information, findings ect. It will be helpfull for agricultural students (both UG as well as PG level including Ph. D.) in India and abroad, horticultural experts, extension workers, policy makers etc. Latest available literatures, ideas, thoughts on these aspects has been incorporated. Related colour photographs has also been incorporated. It will be a treasure of knowledge with regard to management of cucurbitaceous vegetables for better productivity and remunerative cultivation.
The book covers all the issues related with these aspects like insect pests, diseases, mites, nematode parasites weeds, environmental stresses, nutrients elaborately with latest information, findings ect.
Biotic stresses cause yield loss of 31-42% in crops in addition to 6-20% during post-harvest stage. Understanding interaction of crop plants to the biotic stresses caused by insects, bacteria, fungi, viruses, and oomycetes, etc. is important to develop resistant crop varieties. Knowledge on the advanced genetic and genomic crop improvement strategies including molecular breeding, transgenics, genomics-assisted breeding and the recently emerging genome editing for developing resistant varieties in vegetable crops is imperative for addressing FPNEE (food, health, nutrition. energy and environment) security. Whole genome sequencing of these crops followed by genotyping-by-sequencing have facilitated precise information about the genes conferring resistance useful for gene discovery, allele mining and shuttle breeding which in turn opened up the scope for 'designing' crop genomes with resistance to biotic stresses. The nine chapters each dedicated to a vegetable crop or crop-group in this volume will deliberate on different types of biotic stress agents and their effects on and interaction with crop plants; will enumerate on the available genetic diversity with regard to biotic stress resistance among available cultivars; illuminate on the potential gene pools for utilization in interspecific gene transfer; will brief on the classical genetics of stress resistance and traditional breeding for transferring them to their cultivated counterparts; will enunciate the success stories of genetic engineering for developing biotic stress resistant varieties; will discuss on molecular mapping of genes and QTLs underlying biotic stress resistance and their marker-assisted introgression into elite varieties; will enunciate on different emerging genomics-aided techniques including genomic selection, allele mining, gene discovery and gene pyramiding for developing resistant crop varieties with higher quantity and better quality; and will also elaborate some case studies on genome editing focusing on specific genes for generating disease and insect resistant crops.
Geminivirus: Detection, Diagnosis and Management focuses on the latest techniques for managing diseases caused by these circular, single-stranded (ss) DNA genomes. The most significant impact of plant diseases in host populations is often caused by emerging diseases, whose incidence in a plant host is increasing as a result of long-term changes in their underlying epidemiology. Genetic changes in pathogen and host populations, as well as changes in host ecology and environment, are major factors contributing to disease emergence. Understanding plant virus evolution is crucial for modeling the within-host and between-host dynamics and genetics of virus populations. The book presents a comprehensive review of how these viruses develop, including contributing factors such as population bottlenecks during cell-to-cell movement, systemic colonization, or between-host transmission by different procedures. Presented in five sections—Detection and Diagnosis, Emergence and Diversity, Vector and Transmission, Virus–Host Interaction, and Disease Management, the book includes host range determinant and virulence factors involved in pathogenesis, virus–vector interactions during acquisition, retention, and transmission and evaluating management strategies to control Geminivirus. The book is an essential reference for students and researchers interested in plant virology, particularly begomoviruses, geminiviruses, and vector transmission biology. - Introduces identification and characterization of geminiviruses that infect agricultural crops, their wild relatives, and weed hosts - Discusses recombination and reassortment mechanisms influencing viral genetic diversity, virulence, and vector transmission - Explores the origin, evolution, and bottlenecks of Geminiviruses - Introduces identification and characterization of geminiviruses that infect agricultural crops, their wild relatives, and weed hosts - Discusses recombination and reassortment mechanisms influencing viral genetic diversity, virulence, and vector transmission - Explores the origin, evolution, and bottlenecks of Geminiviruses
Completely updated with new content and full-colour figures throughout, the second edition of this successful book continues to provide complete coverage relating to the production of cucurbits, including cucumbers, gourds, muskmelons, pumpkins, squashes and watermelons. These crops are grown worldwide and represent one of the largest and most important groups of horticultural food plants. This second edition of Cucurbits provides up-to-date, succinct and authoritative knowledge on this variety of crops and reflects on significant advances in the areas of production, breeding and evolution.
This book discusses the most challenging task ahead of researchers from India and around the globe: providing disease-free field crops for the ever-growing world population. In Asia, despite being cultivated in massive volumes, major crops, including cereals, oil seed, tuber and non-tuber vegetables, and fruit, are not meeting the demands of the increasing population. This book showcases naturally occurring beneficial microbes in the form of plant growth promoting rhizobacteria, or PGPR, which make it possible to grow field crops without applying synthetic chemicals. Our understanding of PGPR has increased exponentially in recent decades. They play a multifarious role in developing sustainable systems of crop production and protection. The book focuses on the mechanistic behaviors of PGPRs, their use to develop sustainable cultivation techniques, and their application to enhance crop growth and productivity at the cutting edge of tech-oriented agriculture and to replace hazardous chemicals with microbial inoculants. The book is useful to agronomists, microbiologists, ecologists, plant pathologists, molecular biologists, environmentalists, policy makers, conservationists, and NGOs working on organically grown field crops.
The Handbook of Cucurbits: Growth, Cultural Practices, and Physiology contains information on cultural practices, nutrition, and physiological processes of cucurbits under both normal and stressful conditions. It presents the history and importance of cucurbit crop production as well as exhaustive information on growth responses of cucurbits to var
Nematode Diseases of Crops and their Sustainable Management focuses on methods to recognize and identify nematode attackers in agriculturally important crops, offering ecologically sustainable and economically viable strategies and measures for the management of nematode infestations and diseases. The book analyzes nematode pests as major constraints in global crop production and explores the limitations of existing nematode management technologies. It offers comprehensive information through individually focused chapters on major nematode problems in internationally important food, fiber and beverage crops as well as in mushrooms, polyhouse agriculture and forest flora with regard to distribution, and much more.In view of the highly damaging nature of the disease complexes and complexity in their management, independent chapters on nematode-fungus and nematode-bacteria disease complexes and their management are also presented. - Presents in-depth information on the synergistic interaction of nematodes with other plant pathogens and the resulting disease complexes - Focuses on sustainable and economically-viable approaches to nematode disease management - Includes coverage of regulatory concerns and challenges