Vegetable growing has become a highly specialised and intensive activity. As a result of the ever increasing demand for better quality, vegetable growers and plant raisers require an improved quality of the basic material.
The demand for specific seed forms and more information about seed quality has strongly increased to better influence emergence and required number of plants. Seed is a natural product. The often varying environmental conditions thus influence final results. It is therefore often not possible to give detailed information about emergence and other physical seed characteristics. To meet the wishes of clients as much as possible, Elsoms has made up quality standards for the various seed categories.
The germination percentages mentioned are Elsoms minimum required figures and made according to ISTA methods and tolerances.
ESA Product Specifications
These product specifications for germination of precision seeds, varietal purity of precision seeds and seed health requirements are based upon ESA recommended standards.
These product specifications are not meant to be absolute minimum standards for delivery. If the quality tests of Elsoms indicate a lower quality level than given in these specifications, Elsoms will inform perspective seed users. This communication is aimed at informing professional seed users about the quality they can expect, so
they can make their own assessment and decide if these seeds meet their requirements.
Germination tests relate to ISTA procedures and are valid at the time of despatch. Our licensed satellite seed testing station is used to test seed before and after treatment, and germination checks are carried out according to ISTA test methods and guidelines by our qualified analysts.
In general, normal seed has not been subjected to special processes. It is sold by weight and/or by count depending on the product. Normal seed complies with EC Standards.
Precision seed has been subjected to additional processes. It has a uniform size and high germination. Precision seed is sold by count.
Reaction of plants to pests or pathogens
According to: International Seed Federation (ISF), Section Vegetables. (Adopted 28.05.04 Berlin)
Not subject to attack or infection by a specified pest or pathogen.
The ability of a plant variety to restrict the growth and development of a specified pest or pathogen and/or the damage they cause when compared to susceptible plant varieties under similar environmental conditions and pest or pathogen pressure.
Resistant varieties may exhibit some disease symptoms or damage under heavy pest or pathogen pressure. Two levels of resistance are defined.
High/standard resistance (HR): plant varieties that highly restrict the growth and development of the specified pest or pathogen under normal pest or pathogen pressure when compared to susceptible varieties. These plant varieties may, however, exhibit some symptoms or damage under heavy pest or pathogen pressure.
Moderate/intermediate resistance (IR): plant varieties that restrict the growth and development of the specified pest or pathogen, but may exhibit a greater range of symptoms or damage compared to resistant plant varieties. Moderately/intermediately resistant plant varieties will still show less severe symptoms or damage than susceptible plants varieties when grown under similar environmental conditions and/or pest or pathogen pressure.
(These standard abbreviations HR (high/ standard resistance) and IR (moderate/ intermediate resistance) are used throughout the text.)
The inability of a plant variety to restrict the growth and development of a specified pest or pathogen.