The USDA Agricultural Research Service found that 5% vinegar was ineffective and that 20% strength resulted in weed control effectiveness ranging from 28% to 45%, meaning presumably that between ...
The most effective concentration was 20%, applied in a 30-centimetre band over the potato row ... the effectiveness of acetic acid came from the considerable amount of literature available on the use ...
Around 30% of respondents think that tipping culture is “out of control,” with more companies ... are that you should tip around 15% to 20% of the bill. Most people in the service industry ...