Evaluation of Microbial Loads and The Effects of Antimicrobial Sprays in Postharvest Handling of California Walnuts
Esta publicación, la primera de una serie de tres, brinda información general sobre el nogal como especie frutícola y particular sobre las principales características de los portainjertos y variedades que pueden cultivarse en climas templado-fríos. El libro pretende ser una herramienta que contribuya a mejorar los conocimientos de técnicos y productores dedicados a este frutal, cuyo cultivo está en creciente desarrollo en amplias y diversas regiones de Argentina
Walnut growers can minimize the potential for foodborne illness outbreaks resulting from crop contamination by following good agricultural practices. Bacteria that cause foodborne illnesses such as Salmonella and E. coli O157:H7 can be found in animal and human feces. Potential for contamination of walnuts with these organisms is highest during harvest when the nuts are dropped to the ground. This brochure highlights procedures that can be applied to minimize potential for on-farm contamination of walnuts.
Temperate fruit and nut species require exposure to chilling conditions in winter to break dormancy and produce high yields. Adequate winter chill is an important site characteristic for commercial orchard operations, and quantifying chill is crucial for orchard management. Climate change may impact winter chill. With a view to adapting orchards to climate change, this review assesses the state of knowledge in modelling winter chill and the performance of various modelling approaches.
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.