A. Ca
B. Mg
C. S
D. P
Submitted by: Shafiq Rehman
Correct Answer: Mg ✔
Last Updated: August 16, 2021
Related MCQs
- Which nutrients are immobile in plants?
- The highest Cation Exchange Capacity is in:_________?
- Fossils are found in which type of rock:
- A & B horizon is called as:________?
- Availability of Phosphorus is maximum at:__________?
- Flow of nitrogen in soil due to:_________?
- Field Capacity is a point at which?
- Which of the following nutrient play the most effective role in controlling rate of transpiration:
- Which is the correct sequence of soil erosion by water:
- The clay fraction of the soil contains particles less than 0.002 mm. Particles <0.001 mm size:
- Soil order Vertisol is related to:_________?
- Which type of structure is dominant in grasslands:
- The study of relationship between soil properties & plant production is known as:_________?
- Soil conservation is performed by:_________?
- One of the following is not a form of water erosion:
- “Wash-in” takes place in which horizon?
- The soil texture refers to the relative proportion of sand,__________ and clay:
- The capacity of a soil to function on sustained basis promoting plant and animal health:
- Effects of soil pollution may also include:__________?
- Chemicals, used for controlling the disease of crops, fruits & vegetables is__________ & chemical prepared for controlling insect-pests ——————-:
- Soils are also contaminated by a number of inorganic compounds which are also high toxic to human & other animals & are extremely poisonous may include:
- Moderately toxic compound:_________?
- Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
- Who is known as “the father of Hybrid Rice”?
- Items needed for synthesis of plant food in green leaves are _________ & the process through which it takes place is called photosynthesis:
- The lower leaves turn yellow and in some crops they quickly start drying up as if suffering from shortage of water, stunted growth, leaves & fruits shedding & whole plant becomes yellow, are deficiency symptoms of:_________?
- From the sources of plant nutrients availability in soil, which of the following statements are correct:
- Ammonium sulfate fertilizer containing 21% N & 24% S, is best in top dressing in:_________?
- Immobile nutrient in soil is:_________?
- Irregular rock masses formed in the pre-existing cracks & crevices are:__________?
- Azotobacter fixes atmospheric nitrogen in the soil by:__________?
- Maximum fixation of K occurs:__________?
- Conversion of inorganic P to organic P is known as:_________?
- N and P sprayed on the leaves at time of flowering results in:________?
- How many type of soil colloids?
- Auxin is_______?
- Sugarcane + Potato is an intercropping system of_________?
- Agronomy is a branch of Agriculture that deals with________?
- The rice inflorescence is called_________?
- An illustration of an organic material is__________?
- Which area of Pakistan is best for agriculture________?
- Maize plant belong to_________?
- Wheat plant belong to__________?
- Raising of two or more crops in the same field or in year is called_________?
- Raising of only one crop in a year when there is seasonal supply of water is called_________?
- The physical condition of soil is called________?
- If the quantity of organic matter is more than 50% is called________?
- These crops are planted in winter from October to December and harvested in summer from March to May is called______?
- The depth of irrigation water required for the full crop period is called_________?
- The word ‘Agriculture’ is derived from__________?
- Worlds major food crops belong to which of the following family?