Survey and characterization of nematode populations affecting onion and spinach crops in Karachi, Pakistan
Journal Title: Advances in Agriculture and Biology - Year 2022, Vol 5, Issue 1
Abstract
Vegetables are an important source of micronutrients, which can help malnourished people throughout the world and improve their health. In many countries, spinach and Onion are popular vegetables that help to overcome micronutrient deficiencies. Current technology and advances have greatly aided agricultural productivity, while most of the producers have overlooked several critical aspects that might help to reduce yield losses. Particularly, root-knot (Meloidogyne spp.) and cyst (Heterodera spp.) nematodes are thought to be among the most significant plant pests on a variety of crop plants. They have a wide host range, a brief life cycle and a rapid rate of multiplication. This research study conducted an extensive survey of nematode populations affecting onion and spinach crops in Karachi, Pakistan. Soil samples were collected from farmers’ fields and the UBIT field at the University of Karachi. The survey identified a total of 10 different genera of plant parasitic nematodes including Longidorus elongatus, Hemicriconemoides communis, Rotylenchulus reniformis, Hoplolaimus columbus, Bitylenchus brevilineatus, Aphelenchus avenae, Pratylenchus coffeae, Seinura spp., Filenchus spp., and Helicotylenchus spp., along with free-living soil nematodes. Notably, some genera, such as Longidorus elongatus, Bitylenchus brevilineatus, Rotylenchulus reniformis, Hemicriconemoides communis, and Seinura spp., were reported for the first time in onion and spinach crops in Pakistan. The study also provided systematic information, morphometric data, and illustrations of these genera. The findings highlight the importance of understanding and managing nematode populations in onion and spinach crops to ensure sustainable agricultural practices in Karachi, Pakistan. © 2022 The Author(s)
Authors and Affiliations
Naveed Hameed, Asmat Ullah, Zuama Khan, Sumera Aslam and Amir Afzal
Comparative study of biodegradation potential of foreign and indigenous bacteria of pharmaceutical effluent
Pharmaceutical effluents, which contain organic compounds and other contaminants, are commonly found in wastewater. The ability of microorganisms to break down particular contaminants and their diversity are key componen...
Production and physico-chemical properties of biochar and its impact on phosphorous release for soil improvement: A review
Through a process known as pyrolysis, biomass of various biological origins is thermally decomposed to produce biochar, a solid carbon-rich substance. Biochar has enormous potential to cut greenhouse gas emissions, seque...
Morphological analysis of cold-tolerant tomato (Solanum lycopersicum Mill.) plants expressing CBF3 gene
This research endeavor sought to assess the morphological attributes of transgenic tomato plants expressing the AtCBF3 gene in comparison to their non-transgenic (NT) counterparts under standard growth conditions. The st...
Optimizing organic manure and plastic mulching to improve cucumber performance, soil water and thermal conditions of an Alfisol in a humid and tropical region
A field experiment was conducted during the 2022 dry season to investigate the effect of organic manure and plastic mulch on soil water and thermal regimes and cucumber growth, yield and water use efficiency at the Teach...
Plant parasitic nematodes associated with wheat and maize
Nematodes associated with wheat and maize cause different diseases and reduced their yield. Survey was carried out in wheat and maize fields at the University of Karachi near Department of Environmental Studies, mooti ba...