Agronomy: Definition, Meaning and Scope of Agronomy MCQ Quiz in தமிழ் - Objective Question with Answer for Agronomy: Definition, Meaning and Scope of Agronomy - இலவச PDF ஐப் பதிவிறக்கவும்

The Correct Answer is Dibbling. 

Important Points

• Dibbling is the process of placing seeds in holes made in seedbeds and covering them.
• In this method, seeds are placed in holes made at definite depth at fixed spacing.
• This method is very helpful in achieving proper depth, proper spacing and the proper amount of seed to be sown in the field.
• This is called the 'kera' (hand) method. When it is dropped through a Pora or Nai or Hazara, a special attachment with local plough.
• it is called the 'Pora' method. The seeds are dropped at a depth of 5 to 6 cm.
• The germination is satisfactory under this method of sowing.

Key Points

• The greening of potatoes is caused by the accumulation of chlorophyll due to the exposure of the tubers to sunlight which causes the development of the green pigment called Solanin.
• This green colour indicates an increase in glycoalkaloids. 
• Greening can occur at any stage throughout the potato supply chain and reduces the market value due to its poor colour, taste and cooking quality.
• It can be prevented by practising earthing up after every top dressing and by avoiding too much exposure to sunlight.
• The development of solanine in green potatoes results in a decrease in nutritional quality that may upset digestion and cause discomfort.

                                          Greening of Potato

The correct answer is Phototropism.

Key Points.

Phototropism

• It is the process of differential cell elongation exhibited by a plant organ in response to directional blue light.
• It provides the plant with a means to optimize photosynthetic light capture in the aerial portion and water and nutrient acquisition in the roots.

There are two types of phototropism:

Positive phototropism: It is growth toward a light source.

Negative phototropism is growth away from a light source.

Example: Plant roots tend to exhibit negative phototropism

Additional Information

The correct answer is Peter Decrescenzi.

Key Points

• Peter Decresenzi collected many literatures related to Agronomy in his book ‘Opus Ruralium Kamo Daram’ for the first time.
• That is why he is called the ‘Father of Agronomy’.

Important Points

Father of Various Disciplines

The correct answer is Cauliflower.

• Cauliflower is most sensitive to boron deficiency.
• Symptoms: B deficiency starts from the younger leaves of the plant.
• Younger leaves remain small, stiff, and light green
• The margin of the leaves turns red or brown.
• Older leaves curl down and show reddish discoloration

Additional Information

• Causes for boron deficiency: 
• Low boron content in tap water and fertilizer.
• High calcium level in soil which can inhibit the uptake of Boron.
• Inactive roots due to waterlogged conditions or dry soil.

The correct answer is Peter Decrescenzi.

Key Points

• Peter Decresenzi collected many literatures related to Agronomy in his book ‘Opus Ruralium Kamo Daram’ for the first time.
• That is why he is called the ‘Father of Agronomy’.

Important Points

Father of Various Disciplines

The correct answer is Dr. LA Ramdas

Key Points

• Dr. Lakshminarayanapuram Ananthakrishnan Ramdas (Dr. LA Ramdas) was an Indian physicist and meteorologist, known for discovering the atmospheric phenomenon of the Ramdas layer.
• He devised a system of measuring effective rainfall that included a rain gauge held below a layer of soil and plants that simulate land.

Important Points

Father of Various Disciplines

The correct answer is Phototropism.

Key Points.

Phototropism

• It is the process of differential cell elongation exhibited by a plant organ in response to directional blue light.
• It provides the plant with a means to optimize photosynthetic light capture in the aerial portion and water and nutrient acquisition in the roots.

There are two types of phototropism:

Positive phototropism: It is growth toward a light source.

Negative phototropism is growth away from a light source.

Example: Plant roots tend to exhibit negative phototropism

Additional Information

The correct answer is Urea.

Key Points

Fertilizers are generally inorganic in origin and they supply one / more essential plant nutrients in large proportions.

• Straight fertilizer: Fertilizer that supplies only one major plant nutrient e.g. Urea
• Complex fertilizer: Fertilizer that supplies two or more of the primary nutrients e.g. Di-ammonium phosphate (DAP)
• Mixed fertilizers: These are the products made by mixing two or more fertilizers e.g. Nitrogen (N), Phosphorous(P), and Potassium (K)
• Complete fertilizer: Fertilizer has all three primary major Nutrients like Nitrogen (N), Phosphorous(P), and Potassium (K).
• Low analysis fertilizers: Having less than 25 % of the primary nutrient e.g. Single Super Phosphate (SSP)
• High analysis fertilizer: Contains more than 25 % of the total primary nutrient e.g. Urea

The correct answer is Increase Agricultural Productivity

The National Mission for Sustainable Agriculture (NMSA) has been formulated to increase agricultural productivity, particularly in rainfed areas, with a focus on integrated farming, the efficiency of water use, soil health management, and resource conservation synergies.

• During the 12th Five Year Plan, the Government of India launched the National Mission for Sustainable Agriculture.
• It is one of the eight Missions under the National Action Plan on Climate Change (NAPCC)
• Objectives
  • To make agriculture more productive, sustainable, remunerative, and climate-resilient by promoting integrated or composite farming systems specific to the location.
  • Conservation of natural resources through suitable measures for soil and moisture conservation
  • Optimizing water resource utilization through effective water management to increase coverage to achieve 'more crop per drop'