The mandatory task of Seed Certification & Plant Protection Centre (SCPPC) comprise of taking all possible measure in protecting the agriculture sector in the country by preventing enter of alien pests, promoting the environmentally friendly, technically feasible and economically viable pest management strategies, ensuring quality pesticides for pest control, assuring safe use of pesticides, promoting of seed industry assuring seed quality, conserving of genetic resources of food crops & supporting their utilization.

The activities of the center are mainly focused on overseeing and coordinating the operational functions of the Plant Protection Act No. 35 of 1999, Control of Pesticides Act No.33 of 1980 and Seed Act No. 22 of 2003. Thus it facilitates the regulatory and legislative impetus required for the development of the sectors mentioned in the mandate.
In order to achieve these objectives the responsibilities are entrusted to five units which function under the administration of this center.

The SCPPC provides several significant services required to sustain agricultural productivity such as quality control of seeds, plant protection, and control of pesticides and conservation of plant genetic resources. In order to ensure a safe and viable agriculture industry and preserving its prosperity in the future, regulatory aspects of agricultural activities have received due recognition in the programmes of the SCPPC. This is primarily achieved through legislation pertaining to plant protection, control of pesticides and seed certification.
The Plant Protection Act No. 35 of 1999 in Sri Lanka makes provision against the introduction and spread of any organism harmful to or destruction of plants and for the sanitation of plants in Sri Lanka. Pest free plants and plants products play a vital role in the development of agriculture and related industries in the country, which in turn enhances the national economy.

The Control of Pesticides Act No. 33 of 1980, which regulates the import, storage, transport, marketing and use of pesticide helps minimize hazard on public health and the environment by their wide usage in agriculture. In addition, with a view to reduce the use of pesticides, the concept of Integrated Pest Management (IPM) was actively promoted and is now considered a great success in rice cultivation.

Seed Act No. 22 of 2003 which safeguard the famers as well as seed handles from malpractices that would harm the seed industry.