Nematodes are tiny, microscopic round worms which are subterranean in nature and affect almost all the agricultural crops and cause substantial yield loss to the farmers. Nematode management over years relied on chemical methods. Owing to the ill effects with the application of chemicals, ecofriendly methods are gaining importance now a days in nematode management.
Marigold is an effective antagonistic plant against nematodes. The plant, by the production of alpha terthienyl bithenyl compounds from its roots, repel the nematodes and reduce its population. Understanding the mechanism involved in the antagonistic nature of the plants will result in the better enhancement of the nematode management practices in an environmental friendly approach.
Tomato (Lycopersicon esculentum Mill.) is the most important solanaceous vegetable. In India, it is produced around 1, 75, 00,000 MT/ha. Lycopene, an antioxidant is the primary product of tomato, which gives colour to the fruit and protects humans against cancer and heart diseases. Moreover the fruit is also rich in Vitamin A and C.
Among the yield reducing factors in tomato, root knot nematode, Meloidogyne incognita is the only species known to cause economic damage and often happens to be the major limiting factor in the successful cultivation of tomato (Lycopersicon esculentum Mill.) In affected roots, the functional root system gets modified to galls and it impairs the uptake of water and nutrients. Poor development of root system makes the plant highly susceptible to drought. The entire root system may be shallow with excessive branching.
Inhaltsverzeichnis (Table of Contents)
- Introduction
- Methodology
- Results of the studies
- Discussion
- Literatures Cited
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This work aims to investigate the effectiveness of marigold as a natural control agent for root knot nematodes, specifically Meloidogyne incognita, which significantly impact tomato production. The study explores the potential of marigold to reduce nematode populations and improve tomato yields through its production of antagonistic compounds.
- The impact of root knot nematodes on tomato production.
- The use of botanicals as an eco-friendly alternative to chemical nematicides.
- The effectiveness of marigold in controlling nematode populations.
- The mechanism of action of marigold in repelling nematodes.
- The potential of marigold for sustainable nematode management practices.
Zusammenfassung der Kapitel (Chapter Summaries)
The introduction provides a detailed overview of the economic significance of tomato cultivation and the detrimental effects of root knot nematodes on tomato yield. It highlights the limitations of chemical nematicides and the growing importance of botanicals in nematode management.
The methodology chapter outlines the experimental design and procedures employed in the study to assess the effectiveness of marigold in controlling nematode populations. This section details the specific methods used to cultivate tomatoes, inoculate plants with nematodes, and evaluate the impact of marigold on nematode densities.
The results of the studies chapter presents the findings of the experiments, showcasing the quantitative data collected on nematode populations, plant growth parameters, and other relevant indicators. This section provides a comprehensive analysis of the effectiveness of marigold in reducing nematode populations and improving tomato yield.
The discussion chapter interprets the findings and draws conclusions based on the results of the studies. It analyzes the mechanism of action of marigold in repelling nematodes and explores the potential of marigold for sustainable nematode management in tomato production.
Schlüsselwörter (Keywords)
Root knot nematode, Meloidogyne incognita, tomato, marigold, botanicals, nematode control, sustainable agriculture, eco-friendly, antagonistic compounds, alpha terthienyl bithenyl, plant nematology, yield loss, biological control.
- Quote paper
- Sankari Meena (Author), M. Sivakumar (Author), 2004, Marigold as an Effective Candidate in Nematode Control, Munich, GRIN Verlag, https://www.grin.com/document/301991
