Recently in TX Nghia Lo, Yen Bai province combination with Codespa-non-governmental organization of the Kingdom of Spain organized a seminar on "original solution" to assess the support of Codespa help farmers People applying intensive systems tablets thighs depth for SX rice (SDFRI) bring high economic efficiency.
workshop was attended by the Spanish Ambassador Fernando Curcio, territorial Yen Bai People's Committee, leaders of the National Agricultural Extension Center, representing the agricultural sector 15 provinces in the northern mountainous region, a number of non-governmental organizations operating in Vietnam and many scientists in the field agriculture.

In 2000, the Organization Codespa implement assistance programs in Vietnam, including agricultural and rural development programs. Currently ongoing Codespa support fellow northern mountainous area applied method SDFRI. This is the new farming methods, synthesis of new techniques of rice cultivation in Vietnam and many countries around the world.
farming method SDFRI soil engineering, apply liner from 300-400 kg manure, 15-20 kg phosphorus / sao, non plated implanted aligned, density 35 khom/m2, each with 8 beds , a quantity of 1.2 m, a farm hand transplant. Will stifle tablets include two types of inorganic nitrogen and phosphorus are compressed into small cubes. After transplanting from 1-3 days, then the rice pressed in between the 4 clusters, 7-8cm deep, the amount of manure from 8-9 kg / sao. This method of farming fertilizer from being washed away from the shoulder, are soluble in the soil supply of fertilizer needed for the growth of rice plants.
In 2006 Codespa coordinated with the Vietnam Women's Union and DARD Yen Bai province deployment farming methods SDFRI use tablets thighs deep in some of Luc Yen commune, Van Chan, TX Nghia Lo. This model follows each service is extended to local Tran Yen district of, Van Yen Yen Binh and 2 upland districts Tram Tau, Mu Cang Chai. 2006-2008 are 17,000 households farming methods Tablets thighs deep, the 2008-2010 period the number of households doubled, to $ 38,000, now has 60,000 households.

The total amount of fertilizer for the 2012 season to incomplete statistics about 2500-3000 tons, on an area of ​​7000-8000 ha. Method of cultivation SDFRI are expanding in many local: Tuyen Quang Thanh Hoa, Quang Tri and Thua Thien-Hue, Quang Nam Province and other provinces with a total area of ​​about 15000-17000 ha. Tablet presses digits on the 400.