Q. According to CRIDA depth of shallow ploughing – 5 – 6 cm
Q. According to CRIDA depth of deep ploughing – 25 – 30 cm
Q. Irrigation method which is most common among surface method – Check Basin Method
Q. Suitable Irrigation method for fruits – Ring basin method
Q. Irrigation method which is suitable with a slope of 0.5-1% but not for sandy soils – Border strip method
Q. Sprinkler system is not suitable for – Rice & Jute and heavy clay soils
Q. Water discharge rate of sprinkler irrigation – > 1000 lit/ha
Q. Sprinkler pressure required for sprinkler irrigation system – 2.5 to 4.5 kg/cm. sq
Q. Emmitters are important part of – Drip Irrigation
Q. Irrigation method suitable for salt affected soils – Drip Irrigation
Q. Size of BBF (Broad bed and furrow method) – 150 cm width of bed and 45 cm wide furrow
Q. Mole drainage is suitable for – Clay Soils
Q. The energy by which water is held by soils is known as – Capillary Potential
Q. Water loss from Irrigation channel /canal is mostly due to – Seepage
Q. Downward movement of nutrients & salts from the root zone with water known as – Leaching
Q. When all the soil pores are filled with water at a tension of zero bars is known as – Saturation capacity
Q. Permanent Wilting Point (PWP) was proposed by – Briggs & Shantz
Q. Which is upper lower limit of water availability in plants – Upper : Field capacity & Lower : PWP.
Q. Soil Moisture tension at PWP is- 15 Bars or 15 ATM
Q. At field capacity, the soil Water Potential is – -0.1 to – 0.3 bars.
Q. The percentage of moisture in root zone at the PWP of plants called – Wilting coefficient
Q. Portion of capillary water held between field capacity to PWP known as – Available water.
