Southern Tagalog Integrated Agricultural Research Center
Marawoy, Lipa City, Batangas
Tel./Fax No.: (043) 756-4962
Cell No. : (0919) 342-4830
E-mail Address :
Center Chief - Digna Narvacan



The Southern Tagalog Integrated Agricultural Research Center (STIARC) was established in 1930 as one of the experiment stations of the Bureau of Plant Industry (BPI) with a name Southern Luzon Experiment Station. In 1971, the Lipa City Government passed a resolution to rename the station in honor of Dr. Manuel L. Roxas, an eminent scientist and illustrious citizen of Lipa and the first to serve as Director of BPI.

In 1983, the station was integrated with the Department of Agriculture Region IV and became the seat of the Regional Integrated Agricultural Research Systems (RIARS) office. In 1989, through Executive Order No. 116, the station was again renamed as Dr. Manuel L. Roxas Regional Integrated Agricultural Research Station. And two years later, by virtue of DA Administrative Order No. 6 and 19 series of 1991, it became the R & D Center of Department of Agriculture Region 4.


The Center is about 2 km. from the city proper and 80 km. from Manila. Its elevation is about 312 m. above sea level. The topography is generally level and the soil type is Lipa Clay Loam.

The climate is fairly warm from the month of February till April and cool in October to early February. The average temperature during the hot months, 26 degrees Centigrade and 23oC during cold period. The maximum and minimum relative humidity is about 82 and 40% respectively. The average rainfall is about 61 in. annually. The total land area of the Center is 39.4 hectares.


A Center effectively responding to agricultural technology needs for the development of agriculture in Region 4 in support to the goals and objectives of the Agriculture and Fisheries Modernization Act (AFMA)


The STIARC is responsible for strengthening the Regional Research and Development/Extension Systems in agriculture for effectiveness and efficiency and promote the region's agricultural growth thru R & D. Its efforts are focused on the upliftment of the quality of life of small farmers and on sustainability of resource-base over a longer term.


Section 81 of RA 8435 (AFMA) states that Regional Integrated Agricultural Research Center (RIARC) shall serve as the nerve centers of research, production, regulatory and training activities in every region.

Maintain, reproduce and distribute improved genetic planting materials/quality animal breeding stocks for multiplication;


Collaborate with national research centers;

Alter/modify existing production systems towards the direction of modern and more productive agriculture;


Monitor, evaluate, plan, integrate R and D programs in the region;

Integrate, package and disseminate information on agricultural activities;

Conduct special training courses; and

Provide laboratory services.


Mango, Citrus, Coffee, Cutflower and other High Value Commercial Crops, Poultry and Livestock
Southern Tagalog Region (Aurora, Batangas, Cavite, Laguna, Marinduque, Occ. Mindoro, Or. Mindoro, Palawan, Quezon, Rizal, Romblon)



The Center is under the leadership of a designated Manager and two Assistant Managers - one for Technical Program and the other for Research and Development Support Services.

STIARC is manned by 48 technical personnel and 55 administrative personnel including farm/utility workers.