Agronomy MCQ Question and Answer | Agriculture MCQ Question

Our Earth's atmosphere has several layers and each has its specific features. From top to bottom, these layers are Exosphere, Thermosphere, Mesosphere, Stratosphere and Troposphere. That is Troposphere is the lowest layer of our atmosphere, it extends upward to about 10 km above sea level.

National Agricultural policy aims to actualize the vast untapped growth potential of Indian Agriculture, strengthen rural infrastructure to support faster agricultural development, promote value addition, accelerate the growth of agro-business creates employment in rural areas ultimately to secure a good standard of living for farmers. The first ever National agricultural policy was announced on 28^th July 2000. It aims at a growth rate of 4% per annum.

Tensiometer is a device to measure the water tension of soil. It consists of a cylindrical pipe about one inch in diameter with a porous ceramic cup attached to one end and a vaccum gauge attached to the other. It works in the range from 0 to 0.8 bar. Tensiometers are very convenient to schedule irrigation.

Wheat is the main cereal crop of India. The total area under the crop is about 29.8 million hectares in the country and is the second most in production of wheat in the world. Punjab has emerged as the biggest producer of wheat followed by Uttar Pradesh and Maharashtra as per the survey in 2020. Punjab alone produces 125.84 lakh metric tonnes of wheat.

An atmometer is an instrument used to measure the rate of evaporation from a wet surface to the atmosphere. It is also called an Evaporimeter. While evaporation is the process of formation of water (liquid) into water vapour (gas).

Nitrogen is the most essential requirement for almost all plant types but some require less amount while others require more amount. Here out of Barley, Wheat, Sugarcane and Mustard, sugarcane requires the maximum amount of nitrogen from the outer source in the form of fertilizers.

A plant genome assembly represents the complete genomic sequence of a plant species, which is assembled into chromosomes and another organelle by using DNA fragments. The genome of various plants has been sequenced. The first most sequenced plant is Arabidopsis followed by various rice species. Here wheat is the lastly sequenced genome out of other options.

The root system of sugarcane consists of two types of roots that are selt roots and shoot roots. Both are of fibrous type. When sugarcane is planted in the soil every cane joint is activated and produces roots, these roots are selt roots and these are mostly temporary. The roots which are formed near the soil surface from the shoot are called shoot roots. These are permanent roots, are fleshy and white in colour.

Alley cropping is a specific technique of growing field crops in between two widely spaced rows or alleys of fast-growing trees. For better yield in this practice, it is required to prune the trees regularly to limit the shading of the agricultural crop. It helps in nutrient cycling and at the same time control, soil erosion as big trees have a good hold on the soil.

Topping is one of the practices to remove the terminal bud of the plant with or without the small leaves just before or after the emergence of the flower head to make it bushier. Topping is used to stopping plants to produce seeds. Topping is done in the tobacco plant to improve its physical appearance, quality and quantity of tobacco yield.