Seedcane Schemes: a Prerequisite for Disease Control and Varietal Purity
نویسندگان
چکیده
The quality of seedcane used by cane growers in South Africa has not reached the standards necessary to contain the spread of diseases and maintain varietal purity. Since the formation of Local Pest and Disease Control (LP & DC) Committees in 1982, a number of grower groups have established formal seedcane schemes to try to improve the quality ofseedcane. Six schemes are described. Each scheme has been structured to overcome the particular problems for its area and accommodates the needs of the group. The practices and requirements necessary to maintain the purity and quality of seedcane at acceptable limits are described as well as the relative advantages and disadvantages of the schemes from the results achieved.
منابع مشابه
Grow out Test and Determination of Physical Characteristics of Seed of Rice Landraces
The study was attempted with an objective to check the purity of commonly used farmer’s rice seed stock. Assessment of varietal purity of collected 76 rice genotypes showed that there was a variation among the genotypes for varietal purity. Thirty-two genotypes showed 100% varietal purity and forty-four genotypes were contaminated with different types of offtypes. The lowest varietal purity was...
متن کاملPhysical rice grain quality as affected by biophysical factors and pre-harvest practices
Varietal purity and proportions of grains with brown spots, fissured grains, chalky grains andwhole grains in a rice sample are important grain quality attributes influencing consumers'preference and price but little information exist on how these grain quality attributes are affectedby biophysical factors and pre-harvest practices. Several authors have studied in isolation theeffect of biophys...
متن کاملA Large-scale Diagnostic Service for Ratoon Stunting Disease of Sugarcane
The Experiment Station has provided a diagnostic service for ratoon stunting disease (RSD), based on microscopic observation of the causal bacterium, since 1977. The service is widely used by growers to determine the extent of RSD in commercial cane fields and sources of seedcane, and it is also frequently used by Extension staff for survey purposes. The procedures used for diagnosing RSD are o...
متن کاملTRIzol-based RNA Extraction: A Reliable Method for Gene Expression Studies
RNA extraction is a prerequisite technique for gene expression studies, analyzing the etiology and disease progression, treatment effects, as well as designing the diagnostic methods. Although many RNA extraction kits have been commercialized, but these kits are expensive and are not accessible in some countries. Many studies have shown that TRIzol is an applicable material for the RNA extracti...
متن کاملPossibilities for the Control of Sugarcane Smut
Most investigations of the use of fungicides for the control Results are described of field trials in which attempts were of Smut have been carried out with setts that were inoculated made to control sugarcane smut with fungicides. Smut was by dipping in spore suspensions, either before or after treatsuccessfully controlled in the plant cane crop when seedcane ment with f~ngicides.~~ s> 'Partia...
متن کامل