Introduction System of Rice Intensification (SRI) is special method of rice cultivation originally developed at Madagascar in 1983. SRI is a combination.

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Presentation transcript:

Introduction System of Rice Intensification (SRI) is special method of rice cultivation originally developed at Madagascar in SRI is a combination of several practices that includes changes in nursery management, time of transplanting and management of water, nutrients and weeds. SRI emphasizes certain changes in agronomic practices from conventional rice cultivation. However, fundamental cultivation practices remain more or less same.

Soil and seed bed preparation Soil with good drainage and enough organic matter should be used for bed preparation. Size of rice nursery bed in SRI method varies according to seedling requirement. Raising Seedlings in a Box Raising seedlings in egg boxes filled with vermi-compost or organic manure is advantageous. Wet beds on land can be used with addition of organic manure.

Sowing on seed beds Seed Rate: 2 Kg / acre seeds are used to raise the seedlings. Seed rate can different for Short duration, Medium duration and Long duration rice cultivars. Sowing Time : Seed sowing should be done before first July. A. Sowing of seeds on seed bedB. Covering with soil and watering seed bed

Water Management Minimum of water is applied during the Germination stage. Soil surface should be kept moist enough to allow seed germination. Seed beds are irrigated every 3 days. Water management practices depend on the soil type, labor availability. System of Rice Intensification (SRI) saves up to 40 % water and gives 10 to 15 % higher yield than other conventional method of transplanting.

Nutrient Management Soil nutrient should be supplied preferably with FYM or compost made from biomass. Value added bio-compost such as vermi-compost gives additional advantages. Small quantity of Chemical fertilizer can be used for better results. Use of mixed chemical fertilizer NPK ( ) is recommended.

Plant Protection: Weed Management: Practice hand weeding in SRI nursery 7 days after sowing and use of herbicides and Mechanical weeding is avoided. Pest and Disease Management: Integrated pest management (IPM) in SRI method is practiced to avoid investment on plant protection chemicals. Synthetic pesticides are used only when the incidence of pest or disease is very severe.

Cost- Effectiveness: SRI method of rice cultivation is popular among the farmers as it increases grain yield with the same level of inputs and capital. Reduce water, seed, and chemical fertilizer inputs making it more profitable than conventional methods of rice cultivation. Initially it require significantly more labor mainly for preparing land and weeding operation.

SRI Method: from nursery to harvesting A. 2 Leaf stage seedlings ready for transplant B. Transplanting of single seedlings C. Rice Crop stand in SRI Method.