Within the framework of the regional project "Network for Agriculture and Rural Development Policy Research and Consulting for the Countries of the Mekong Sub-Region" (NARDT) funded by IFAD, the Institute of Policy and Strategy for Development Agriculture and Rural Development organized a Scientific Workshop on TFP calculation methods and TFP's contribution to the growth of the agricultural sector to share research results of scientific topics. The workshop was chaired by Dr. Tran Cong Thang, Director of the Institute of Policy and Strategy for Agriculture and Rural Development, Project Director of NARDT
The seminar was organized with the participation of the research team on the topic "Research to assess the contribution of science and technology to GDP growth, experts and experienced managers in key research and consultancy. books or experience in TFP calculation and analysis.

Dr. Tang Van Kien presented on TFP calculation method in agriculture
The main types of productivity indicators are: Productivity is equal to input criteria divided by output criteria, Output indicators are production results (in kind or value).
Considering the nature of the input element:
+ Productivity by cost
+ Productivity by resource
Considering the calculation range of the input factor:
+ Parts productivity
+ Overall total productivity
Manifestations of productivity
• Productivity level
• Productivity increase
• Productivity growth rate
• Productivity growth rate
• Increase in production results due to increased productivity
• Rate of increase in production output due to increased productivity
• Increased share of productivity improvement in production results
Through the research results, we see that the relationship of the growth rate of these two indicators will be shown in the following cases:
• Both fixed asset productivity and labor productivity increase or decrease, and have the same increase or decrease.
• It is concluded that the overall total productivity increases or decreases and the increase or decrease is exactly equal to the increase or decrease of each individual yield indicator (rarely).
• Both fixed asset productivity and labor productivity increase or decrease with different increase and decrease.
• It is concluded that the overall aggregate productivity will increase or decrease, but it is not possible to determine how much the general increase or decrease (it happens but not much).
The common case is that when one of the two parts productivity increases, the other decreases. At that time, it was not possible to determine the overall increase or decrease in productivity, let alone determine how much the increase or decrease.
In fact, it is common to see that labor productivity has a higher growth rate than capital productivity (the opposite is also true, but not much). The above-mentioned limitations of calculating and applying separately fixed asset and labor productivity norms can only be overcome by applying common aggregate productivity indicators (calculated according to the aggregated input criteria). both fixed assets and labor).
The overall aggregate yield and the rate of increase of the output resulting from an increase in the overall aggregate yield. Aggregate total productivity by resource = Production output as value added (Y): Total resource is capital (K) and labor worked (L)
It is not possible to simply add capital and labor together to calculate the aggregate level of productivity. Many economists and statisticians around the world offer different methods to convert the units of the denominator. But there must always be a hypothetical condition, which has not been highly agreed upon, so it still remains in theory and has not been put into practice.