Vetiver is a monocotyledon family catnip as well as corn, sorghum, sugarcane, found scattered throughout several natural areas. A survey found that are scattered around the world, with approximately 12 species and discovered in the country in Thailand II: 1. groups breed vetiver group include species, Surat Thani. Kamphaeng Phet 2 Sri Lanka 3, Royal, etc. and songkla.2. groups breed vetiver semi-evergreen include varieties of Ratchaburi. Kamphaeng Phet, Nakhon sawan, Loei and Prachuab et 1, etc. Vetiver grass is the bud crowd around tightly. Vetiver leaves resemble long narrow parallel edge Cape examinations end. Stomach is after-taste rear blades. Root is a root system in capillary weave together. Tight long rooted in the soil Deals with flower set composed of a small number of flower blossoms, half sterile.Getting the vetiver been used cultivated in soil and water conservation because there are several features. As follows:1. There is a budding space including the tight. Do not spread sideways. 2. There is a budding and new leaves. Not much to care 3. Vetiver has the stem message frequency. Propagated using shoots throughout the year 4. most do not breed with seeds that spread. 5. is there a long cut and break new. Strong and resistant to degradation 6. root system length woven together tightly and helps water. 7 open. Around the roots as a residence of microorganisms 8. Adapt to different conditions, better disease resistance conventional plants. 9. A growing section of lower surface enables better survival in various conditions. For planting vetiver in agricultural areas are important for recovery purposes, resources, soils and soil and water conservation, which contains.1. The planting of vetiver in the slope area. Should be planted in rows along the transverse level of the vetiver grass the slope at the beginning of the rainy season by making vertical grooves along the planting levels. Distance between 5 cm and 10-term for a dare naked roots centimeters for a daring row spacing, vertical bags cannot exceed 2 metres of vetiver grass will grow close together inside the tillers 4-6 months. 2. Planting to control water distribution and water grooves Bring a plastic bag at a brave vetiver has excellent strength and tillers, and then to grow in water. By digging, planting holes, transverse Groove, the water is straight or vertical arrow heads pointing into the direction of water flow may be used or a sack of rocks. Help make cars reinforced base, firmly planting vetiver, horizontal spacing between 5 cm and 10 cm for the bare root for a brave brave vetiver planting and between not more than 2 metres vertically after birth khandin tide. Should be planted vetiver per khandin the water barrier from both sides. So as to disperse water into farmland 3. Planting to preserve moisture in the fruit garden Should be planted in orchards, vetiver, wood effect distance has not yet grown or planted fruit trees. By planting a row of vetiver, a row of wood parallel to the effect that the term in the middle of row crops or planted a semicircle from 2.5 metres to result trees. trees grow up to cover the area. The vetiver grass will die to become organic objects in the land. 4. Planting vetiver semi-evergreen crops grown in the area. Planting vetiver semi-evergreen areas along the levels in crops grown by digging grooves planted along the level spacing between 5 cm and 10 cm for the bare root for the brave dare bag. The compost should be applied before planting vetiver or planting vetiver is preferred between rows, planting crops, and should be planted in soil moisture conditions. At the beginning of the rainy season. 5. The planting of vetiver in the flat area, or an area group. In an area or an area group that has the condition is raised then the pilot to grow plants. Vetiver can grow in rows around the edge of the zone, or planting vetiver grooves at the edges to lift conversion keeps soils, soil erosion and soil moisture treatment to remove them. ๖. การปลูกรอบขอบสระเพื่อกรองตะกอนดิน ควรปลูกตามแนวที่ระดับน้ำสูงสุดท่วมถึง ๑ แนว และปลูกเพิ่มขึ้นอีก ๑-๒ แนวเหนือแนวแรก ซึ่งขึ้นอยู่กับความลึกของขอบสระ ระยะห่างระหว่างต้น ๕ เซนติเมตร สำหรับกล้ารากเปลือย และ ๑๐ เซนติเมตร สำหรับกล้าถุง โดยขุดหลุมปลูกต่อเนื่องกันไป ในระยะแรกควรดูแลปลูกซ่อมแซมให้แถวหญ้าแฝกเจริญเติบโตหนาแน่น เมื่อน้ำไหลบ่ามาลงสระ ตะกอนดินที่ถูกพัดพามากับน้ำ จะติดค้างอยู่กับแถวหญ้าแฝก ส่วนน้ำจะค่อย ๆ ไหลผ่านลงสู่สระ และระบบรากของหญ้าแฝกยังช่วยยึดติดดินรอบ ๆ ขอบสระไม่ให้เกิดการพังทลาย
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