pressurized irrigation technologies of course have the potential to raise the productivity of land and water; but, these technologies could not popularize among the smallholders who own millions of farms worldwide. in developing pressurized irrigation technologies, particularly for field crops irrigation, researchers and manufacturers have developed more specialized and expensive technologies w...

A vast number of journals are published monthly but a large percentage is only available by subscription and many libraries in developing nations cannot afford the institutional fees. The costs of publishing an article can be prohibitive for struggling laboratories that have to decide whether to invest in reagents or paper. Budget constraints also prevent researchers from attending large Europe...