NPK-S Lam Thao increased carrot yieldUpdate: 3/25/2015
Plants can grow carrots on soil types, however Favorite alluvial soil slightly acidic to neutral pH 5.5 to 7, porous.
1 The name, origin and growth characteristics
Carrot Tree scientific name is Daucus carota var. sativa of the family Umbelliferae canopy States.
Carrots are grown first in Afghanistan and then expand to 10-12 countries in the EasternMediterranean, then moved out west about 14-15 European countries.
Carrot plants long used, is considered the first medicinal plant, until the early years of the twentieth century were used as food plants. Carrots are famous for rich source of vitamin A, vitamin B1, B2, Cand also very pretty.
Carrots are root vegetables crops, tuber yield significantly reduced if the tubers bulge stage water shortage. Cold tolerance, proper temperature 16 - 210C, however, can withstand high temperatures, 25 - 270C, at the right temperature to grow bulbs, tubers little high temperature.Temperatures above 270C or 150C lower than the old small, rough, red light, the amount of vitaminA in the lower bulb.
2 Requires soil, nutrients
Tree roots and tubers carrots were lying on the ground, so land planted carrots should be at leastloosen soil to a depth of 0-20 -> 25 cm, raised bed. Plants can grow carrots on soil types, howeverFavorite alluvial soil slightly acidic to neutral pH 5.5 to 7, porous.
If planted in light soil, coarse sand and shape many of the tubers will then deformed, distorted. Ifplanted in heavy soil (clay content is too high), the tree tends to leaf out, hard to root out. To createsuch capacity in SX, carrot plants get nitrogen from the soil of many types (divided into 5 groups ofvegetables, carrot plants in the first group), potassium and phosphorus are average low (group 3 of the 4 groups ).
Planting season 3
Highland Da Lat (Lam Dong), Sa Pa, Bac Ha (Lao Cai) can be grown year round carrots. North Delta carrots can be planted from autumn - winter - spring, sown in July, 8, 9, 10, 11, 12, 1, 2 toOctober harvest, 11, 12, 1, 2, 3, 4, 5 There are 3 seasonal tree planting carrots:
- Department of Early sown in July, August, the harvest in October, November.
- Key Services: Direct seeding 9-10 are harvested in December and January next year.
- Department Late sowing 1-2 then harvested in April and 5.
4.-tillage, planting density
Carrots are closely planted trees leg (no nursery and planting stage), to the amount of particles is 4-5 kg / ha (140-180 gr / North pole 360 m2), if possible, the amount of technical sowing seedsmaybe less.
The soil should be plowed, deep hoeing, tillage techniques. Raised bed 20-25 cm wide bed surfacefrom 1.2 to 1.5 m. Evenly distributed on the surface of the bed liner, mixed with soil, then spread on a thin layer of surface soil before sowing. Sowing should be done to cover 1 layer of straw on waterand warm enough. Water daily until the plants grow.
+ Tree Pruning positioning 1-2 times: When plants 5-8 cm and 12-15 cm plant spacing to locate 10-12 x 20 cm corresponding density 310000-375000 trees / ha (11000-13500 trees / perchTonkin). If you sow good technique, only prune one time.