RAPE POLLEN ALLERGY
In 1948 Juhlin-Dannfelt published his investigation of the occurrence of different types of pollen allergy in Sweden. According to Urbach (1937) and Hansen (1940), certain regions of Europe have only one pollen season. Juhlin-Dannfelt showed that there are two pollen seasons in Sweden, one in spring in which catkin bearing trees play an important role, and the other in June and July, months in which the grass pollens predominate. Juhlin-Dannfelt also reported hypersensitivity to other types of pollen, especially from some Compositae, particularly the oxeye daisy. He also described isolated instances of allergy to pollen from the genera of Taraxacum, Rumex, Plantago and Chenopodium. Recently a man presented himself at the department of allergy complaining of asthma and pollinosis, which on investigation proved to be due to hypersensitivity to rape pollen. As a search of the literature failed to reveal any reports of hypersensitivity to pollen from plants belonging to the Cruciferae family, a brief description of the case observed was considered justified.
The biology and ecology of canola ( Brassica napus ) July 2002
PREAMBLE This document addresses the biology and ecology of the species Brassica napus L. Included is the origin of B. napus as a crop plant (referred to as 'canola'), general descriptions of its growth and agronomy, its reproductive biology, toxicity and allergenicity and its general ecology. This document also addresses the potential for canola to outcross via pollen transfer and seed movement. Special emphasis has been given to the potential hybridisation between canola and its close relatives.
PRECISION FARMING APPROACHES TO SMALL-FARM AGRICULTRUE
Precision farming implies a management strategy to increase productivity and economic returns with a reduced impact on the environment. It is based on the application of information technology to a description of variability in the field, variable-rate operations and the decisionmaking system. There are three technology levels and three strategies in the development of precision farming. Precision farming practices can be used on small farms as well as big ones, and they play a core role in rural development programs which are integrated with industry. A real-time soil spectrophotometer was developed to describe soil variability in farmers' fields, to be used in precision farming.