Agronomy MCQ Question and Answer | Agriculture MCQ Question

Red rot disease in sugarcane is caused by the fungus Colletotrichum falcatum.
In this infection, red and white patches are found within the cane along with a sour alcoholic odor when the cane is split open.
The spindle leaves start drying in an earlier stage of infection and at a later stage, stalks become discoloured and hollow.

The barometer is the instrument that measures atmospheric pressure. While Barograph is a self-recording barometer, it records the readings of any change in the pressure on a moving chart. Thus, continuous variation in atmospheric pressure is recorded by Barograph.

Sesame is called as "Queen of oilseeds" because of its high quality polyunsaturated stable fatty acids that restrain oxidative rancidity. It is also stable due to the natural antioxidants such as sesamin, sesamolin, sesamol and sesamolinol that reduce the rate of oxidation. It also contains an essential nutrient in a significant amount that is vitamin K, providing 17% per 100gms.

Biological value is a measure of the proportion of absorbed protein from food that becomes incorporated into proteins of the organism's body which ultimately means the least time required by the digested protein to be used in the protein synthesis process in a cell of an organism.
The proteins from animal sources have a higher biological value than the protein obtained from plant sources.
Out of all the options given, the mung bean has the highest biological value.

5^th June of every year is celebrated as World’s Environment Day.
This day was first observed in the year 1974 in the city of Spokane, USA. The first celebration, under the slogan, "Only one Earth" took place.
It is a platform to raise awareness of the problems faced by our environment like Air pollution, illegal wildlife trade, sustainable consumption, global warming, food security, etc.

Ratooning is an ancient practice of propagation of sugarcane in which subterranean buds on the stubble give rise to a new crop. It is also referred to as stubble crop, where stubble is the leftover part of the cane left underground after harvesting.
This is practiced as a matter of routine in Sugarcane and Napier grass.

A crop yield index of a farm is a number that denotes the average of the yields of various crops grown on a farm or in a locality to the yields of the same crops on another farm.
It is calculated by dividing the gross cropped area by the net area available on the farm, multiplied by 100.
Here, all the given options are not correct.

Sprinkler irrigation is a method that mimics natural rainfall by spraying water through a system of pipes and sprinklers.

Undulated soils, or uneven terrains, pose challenges for traditional irrigation methods like surface irrigation due to irregular slopes and water flow issues.

Sprinkler systems are ideal for such conditions because they do not rely on gravity or level surfaces to distribute water evenly.

They allow for controlled water application and uniform coverage, making them highly suitable for undulated areas.

In contrast, clay soils have slow infiltration rates, saline soils need careful water management to avoid salt accumulation, and acidic soils are more about pH management than irrigation method.

Hordeum vulgare is the botanical name of Barley. It is a member of a grass family and is a major cereal crop grown in temperate climates.
About 70% of barley production is used as animal fodder while the remaining 30% is used as a source of raw material for fermentable drinks and beverages and as a component of various food.

Urea (Option B) is typically considered a cheaper fertilizer compared to other options listed. It is a widely used nitrogenous fertilizer due to its relatively low cost of production. Single super phosphate (Option A), dicalcium phosphate (Option C), and ammonium sulfate (Option D) generally tend to be more expensive than urea. Hence, the correct answer is Option B: Urea.