"more economical method" is correct and usable in written English.
It is often used to describe a means of doing something that has lower costs than the traditional approach. For example: "The company has implemented a more economical method of production, which has allowed them to cut costs significantly."
Therefore, feeding whole or coarsely ground barley would be a more economical method compared with steam rolled or roasted barley.
The major advantage of this lysis-PCR method is that it avoids a second step of purification resulting in a simpler and more economical method.
A more economical method which requires a less repellent agent is by attaching the netting materials such as a piece of cloth which has been treated with repellent agent at the lower part of the hammock.
Moreover, the cost of the second survey packet ($2.40) was less than the $3 difference in incentives, making the $2 incentive with multiple mailings the more economical method.
The cost-minimisation analysis demonstrated that under the circumstances described in this paper, the tele-ENT service was a more economical method for the health department of providing specialist ENT services.
Because the conservation of water is important for most terrestrial animals, it is not surprising that many of them have evolved more economical methods for disposing of nitrogenous by-products.
In the industrialized world the growing cost of health services has caused both private and public health-care delivery systems to question current policies and to seek more economical methods of achieving their goals.
However, increased demand for pyridine resulted in the development of more economical methods of synthesis from acetaldehyde and ammonia, and more than 20,000 tons per year are manufactured worldwide.
However, researchers are still seeking safer and more economical methods of treatment.
The impact on estimates of using more economical methods is largely unknown.
Combining these three effects in a smaller volume format accurately provides more accessible and more economical methods of study of these sample configurations, without the additional variable of differing volume or thawing rate.
