Description : The moisture content of a soil at which plants permanently wilt and will not recover.
Last Answer : Ans.Permanent wilting point (PWP)
Description : Soil moisture content is determined by
Last Answer : Ans.Tensiometer (at 0.85 bar)
Description : The moisture deficit condition, results when the amount of water vapour available in the soil is not sufficient to meet the demand of potential evapo-transpiration
Last Answer : Ans.Drought
Description : Optimum moisture content for safe storage of mustard is
Last Answer : Ans.7-8%
Description : The moisture content at harvesting stage of wheat
Last Answer : Ans.25-30% 3. Maize
Description : The flow of excess water from the field after saturation of soil.
Last Answer : Ans.Runoff
Description : A period in which the available soil moisture is enough to meet the evapotranspiration requirement of dry land crops
Last Answer : Ans.Length of growing period
Description : Which of the following is a method of indirect measurement of soil moisture?
Last Answer : Ans.Neutron moisture meter
Description : A system of tillage in which organic residues are not inverted into the soil and used as a protective cover against erosion and evaporational losses of soil moisture?
Last Answer : Ans.Conservation tillage or stubble mulch tillage
Description : The optimum range of available soil moisture for convenient and effective ploughing
Last Answer : Ans.50-75%
Description : Generally, the third row of crop is removed or growing of crop in pair row and the third row is escaped with an object to conserve the soil moisture in Dryland areas?
Last Answer : Ans.Paired row Crops
Description : Such crops are grown to conserve the soil moisture through their ground covering foliage?
Last Answer : Ans.Mulch Crops
Description : When water is held tightly as thin film around soil particles by adsorption forces and flows at gravity of > -31 bar, is called
Last Answer : Ans.Hygroscopic water
Description : The artificial application of water to supply moisture essential to plant growth is termed as
Last Answer : Ans.Irrigation
Description : If drainage is permitted throughout the test, during the application of both normal, and shear stresses so that full consolidation occurs and no excess pore pressure is set up at any stage of the test, is ... (A) Quick test (B) Drained test (C) Consolidated undrained test (D) None of these
Last Answer : Answer: Option B
Description : The maximum dry density upto which any soil can be compacted depends upon (A) Moisture content only (B) Amount of compaction energy only (C) Both moisture content and amount of compaction energy (D) None of the above
Last Answer : (C) Both moisture content and amount of compaction energy
Description : The change of moisture content of soils, changes the (A) Value of the angle of repose (B) Amount of compaction required (C) Cohesive strength of soil (D) All the above
Last Answer : Answer: Option D
Description : Plants usually do not grow well in poorly drained soils because: a. Oxygen content is low in poorly drained soils b. The organic matter content of poorly drained soils is too high c. Poorly drained soils warm too quickly in spring d. Plant roots become engorged with water in poorly drained soils
Last Answer : Oxygen content is low in poorly drained soils
Description : The water content between Field capacity (-1/3 bar) to PWP (-15 bar) is called
Last Answer : Ans.Available water
Description : Salt content in irrigation water evaluated as best quality
Last Answer : Ans.0.2 to 0.5 g/lt
Description : The good physical condition of soil after tillage is
Last Answer : Ans.Tilth
Description : The permissible and normal limit of EC, RSC, SAR (meq 1 –1 ) and Boron content (ppm)
Last Answer : Ans.2–4, < 2.5, < 10 and 10,000 ha
Description : Nicotine content accumulates in which part of tobacco?
Last Answer : Ans.Leaves (IV) Cropping and Farming system
Description : Nicotine content (%) of tobacco is
Last Answer : Ans.0.5 to 5.5 (N. tabacum) and 3.5 to 8.0 (N. rustica)
Description : Protein content in potato is
Last Answer : Ans.1.6%
Description : The solanin content present in potato is
Last Answer : Ans.5 mg/100 gm of potato
Description : The sugar content/recovery is more in the cane produced at
Last Answer : Ans.Southern India
Description : The oil content in safflower
Last Answer : Ans.32-36%
Description : The protein and oil content in soybean seeds
Last Answer : Ans.40-42%, and 20-22%
Description : Sunflower has high quality edible oil content of
Last Answer : Ans.45-50%
Description : The oil and protein content of groundnut
Last Answer : Ans.45 and 26 %
Description : Alkaloid content present in sorghum leaves
Last Answer : Ans.HCN (Dhurin alkaloid)
Description : The protein content in wheat
Last Answer : Ans.8-11%
Description : The protein (Oryzein) content in paddy
Last Answer : Ans.6-7%
Description : The ratio of the crop yield to the total amount of water used for irrigation is called, measured in kg/ha-cm is
Last Answer : Ans.Water use efficiency
Description : Pick up the correct statement from the following: (A) The volume of underground water extracted by gravity drainage from a saturated soil, is known as yield (B) The ratio of volume ... ) The sum of specific yield and specific retention, is equal to porosity (D) All the above
Last Answer : (D) All the above
Description : Vertical movement of water or downward movement of water from different soil layer is called as
Last Answer : Ans.Percolation
Description : Growing of two or more crops simultaneously in alternate rows or otherwise in the same area, where there is significant amount of inter crop competition is called as
Last Answer : Ans.Intercropping
Description : Growing of two or more crops simultaneously and intermingled without row arrangements, wherethere is significant amount of intercrop competition is called as
Last Answer : Ans.Mixed cropping
Description : The most suitable soil for the production of cotton is – (1) Black lava soil (2) Alluvial soil (3) Loamy soil (4) Well drained soil
Last Answer : (1) Black lava soil Explanation: Black soil is most suitable for the cultivation of cotton. The deep and medium black lava soil of the Deccan and Malwa plateaus is considered ideal, though it can be grown on alluvial 'and red soil as well. The black cotton soil is also known as regur.
Description : In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear (A) Decreases (B) Increases (C) Remains unchanged (D) First increases and then decreases
Last Answer : (A) Decreases
Description : The most suitable soil for the production of cotton is : (1) Black lava soil (2) Alluvial soil (3) Loamy soil (4) Well drained soil
Last Answer : Black lava soil
Description : Detachment and transportation of top soil particles by wind and or by water is known as.
Last Answer : Ans.Soil erosion
Description : The process in which soil water lost from leaves of plants in the form of vapour and enters the surrounding atmosphere.
Last Answer : Ans.Transpiration
Description : The water, retained by the soil in capillary pores (micropores), against gravity (-1/3 to - 31 bar) by the force of surface tension
Last Answer : Ans.Capillary water
Description : The percentage of applied irrigation water stored in the soil and made available for consumptive use by the crop
Last Answer : Ans.Irrigation Efficiency
Description : First entry of water from the upper layer of soil is known as
Last Answer : Ans.Infiltration
Description : A branch of agricultural science which deals with principles and practices of soil, water and crop management.
Last Answer : Ans.Agronomy
Description : The property of a soil which permits water to percolate through it, is called (A) Moisture content (B) Permeability (C) Capillarity (D) None of these
Last Answer : (B) Permeability
Description : The most popular mechanical measure to control soil erosion and conserve is
Last Answer : Ans.Contour Bunding