... wide, 1 5-2 0cm in heigh, 2 5- 30cm in gutter. Fertilizer: Amount of fertilizer for 1 ha growing cucumber (to get yield about 50tons/ha) - Cow dung: 3 5 -4 0 tons - Urea (46 %N): 30 0-3 50kg - Supper ... area of 50 ha, in which about 30 ha vegetable with 5ha of plastic houses and 10ha of net-houses. The work is being started with 0.1ha of plastic house and 1ha of net-house and a house of 200m2 ... time, 15 minutes per time. 5. Plant protection a/The main of insect and diesease In nursary: Concerning to damping-off (Pythium or Rhizoctonia) and to used pesticide with ½ concentrate of recommended...