Phytotoxic effects of aqueous extracts of walnut leaf were studied on germinating seeds and early seedling growth of mustard (Brassica campestris cv. Karanti) under western Himalayan agri-silvi system. Five treatments comprised of distilled water (control), 40, 60, 80 and 100% concentration of leaf extracts were treated. The effect of aqueous extracts was found inhibitive with concentration dependent manner on seed germination and subsequent seedling growth. The variety exhibited extent of phytotoxicity at 100% extracts application in comparison to untreated control.
This publication is an extensive vegetable production guide that addresses topics such as marketing aspects for production decisions, general production considerations, insect management, weed management, and disease management. You will find specific information for the following crops:
Turnip Mosaic Virus (TuMV) infects most cruciferous plants, but is most damaging in Chinese cabbage, turnip, mustard, and radish. The most common symptom in these crops is a distinct mosaic of light and dark green colors in the leaves. Depending upon the virus strain and the crop species, necrotic streaks, flecks, or ringspots may also occur. Necrotic spots and ringspots are the primary symptom in common cabbage, but the severity of symptoms is cultivar dependent.
Organic farmers rely primarily on preventive, cultural, and integrated methods of pest and disease management. Additionally, there are a number of materials that can complement and support organic management. This guide was developed to provide a useful and scientifically accurate reference for organic farmers and agricultural professionals who are searching for information on best practices, available materials, and perhaps most importantly, the efficacy of materials that are allowed for use in organic systems.
Vegetable seeds can be saved to sow new crops in the future, but not all seeds are suitable for saving. Varieties suitable for seed saving include local varieties that have been grown in one region for a very long time, self-pollinating crops (for example, beans and peas), and open-pollinated varieties of some cross-pollinating crops (for example, pepper, cucumber and carrot).