The care minister Norman Lamb has said it is "unrealistic" to think 15 minutes is enough time to provide adequate care to the elderly and disabled.
Data obtained from 63 local authorities in England by a care charity found that three-fifths now commission 15-minute visits, despite concerns that short visits "deprive" people of essential care.
Norman Lamb said there were too many examples of councils buying "rushed care visits": "It's unrealistic to think that 15 minutes is enough time to help people who are older or who have a disability to do everyday things like wash, dress and get out of bed.
"It's not fair on those who need support and it's not fair on care workers."
The minister insisted the Government needed to help provide "better care for the 300,000 people currently getting home care" and for those likely to need it in the future.
Shorter care visits to elderly and disabled people are "fully justified", the Association of Directors of Adult Social Services (Adass) has argued.
Data obtained by the Leonard Chesire Disability charity found the number of 15-minute care visits in England were on the rise, despite concerns that shorter visits "deprive" people of essential care.
However, Adass president Sandie Keene insisted 15-minute visits are "fully justified and fully adequate", adding: "It is totally wrong to believe that all tasks need more than 15 minutes to carry out.
"And frankly naive to believe that simply by abolishing 15-minute slots a magic wand will have been waved, and improvements automatically achieved in our care services. It doesn't work like that."
The number of 15-minute care visits to elderly and disabled people are on the rise, despite concern the short visits "deprive" people of essential care.
Data obtained from 63 local authorities by Leonard Cheshire Disability found three-fifths now commission 15-minute visits.
A new report by the charity estimates the proportion of visits that last 15 minutes or less has risen by 15 percent over the past five years.
The report said that the short visits "simply do not allow enough time to deliver good-quality care".