It really depends on the University and the standards for retention, tenure, and promotion. At Research I universities, the requirement isn't limited to number of journal publications but also includes dollars generated from external grants.
One high-level paper published in a reputed journal every two years would be the minimum number of publications. On the other hand, there is no maximum number of annual publications in journals, or conferences, or posters as well as book chapter, reports, books.
It really depends on the University and the standards for retention, tenure, and promotion. At Research I universities, the requirement isn't limited to number of journal publications but also includes dollars generated from external grants.
It is best to only attend conferences where you can present a conference paper yourself. One trick to ensure that you get sent to conferences is to send two different papers to the same conference.
It depends on your current rank and also varies according to institution Harry. In my experinece, a lecturer once every 2 years, senior lecturer once a year, associate Prof 2 and Full professor 3 to 4
As Borden has pointed out, if you are not doing 100% research, but are both lecturing and researching, you will only be available to present or papers at half the rate. Bear in mind that if you are lecturing as well, you can be presenting and publishing papers on education as well. ;-)
I agree with you Sir Mushongo. It is the same in my institution. However, there is a cap for promotion. From lecturer to senior lecturer, you need not less than 6 publication; from senior lecturer to associate professor , you need not less than 10; and from asso. Professor to full professor, you need not less than 20.