Severe cases of the disease can reduce yield by up to 40%.
Because of the strong interest in the bonds, the city was able to reduce yields yesterday evening.
Without control leaf spot is estimated to be able to reduce yields by up to 50%.
They generally do not kill the host plant but can severely reduce growth and yield.
The mass of the pit can be reduced by half, without reducing yield.
When left uncontrolled the disease has been shown to reduce yields by 30%.
Doing so often reduces yields, but makes for more stable investments, she said.
It had pushed up the price on the Treasury's 30-year bond and reduced yields to levels not seen since the summer of 1986.
He has also worked to reduce yields significantly in an effort to improve the intensity and quality of the finished wine.
But an expected increase in interest rates is likely to reduce yields on fixed-income securities.