Agronomy MCQ Question and Answer | Agriculture MCQ Question

Cropping intensity is the extent of the use of land for cropping purposes during a given year. It is the number of times a crop is planted per year in a given agricultural area.
It can be calculated as the ratio of effective crop area harvested to the physical area.

For transplanting a one hectare area of rice approximately 1000 meter square of the area is sufficient for nursery raising.
There are different methods of raising rice seedlings, these are the Wet bed nursery, the Dry bed nursery, the Dapog nursery, etc.

IIPR stands for Indian Institute of Pulses Research, established in the year 1983 by ICAR and is located in Kanpur, Uttar Pradesh.
Its motive is to carry out basic strategic and applied research on major pulse crops.
The present Director of IIPR is Dr. N. P. Singh.

Denitrification is defined as the reduction of nitrate or nitrite to gaseous nitrogen catalyzed by the bacteria. The level of denitrification is affected by the presence of an abundance of organic matter, elevated temperatures, alkaline pH, etc.
In the case of rice, the denitrification losses are highest in the AWD system.
AWD system is the 'Alternate Wetting and Drying’ system, which is a water management technique, practiced to cultivate irrigated lowland rice with much less water than the usual system of maintaining continuous standing water in the crop field.

Rice requires water logging for its cultivation while most the crops are intolerant to water logging.
Waterlogging is the saturation of soil with water it occurs when there is too much water in a plant’s root zone, which decreases the oxygen available to roots.
Rice is a facultative hydrophyte, that is it can transport oxygen from the foliage to the flooded roots, so to counteract weeds and increase productivity, water is kept in the torrential fields throughout the growing season.

Cotton is the soft fiber that grows around the seeds in the seed pod or boll of the cotton plant. Each fibre is a single elongated cell that is flat twisted and ribbon like with a wide inner hollow.
Cotton fibres are comprised of 88% - 97% of cellulose, while the remaining constituents are wares, proteins, and pectin.

Norin 10 is the first wheat variety to have short plant height, lodging resistance, and higher grain yield.
It is a semi-dwarf wheat cultivar with a very large ear that was bred by Gonjiro Inazuka at an experimental station in Japan. It grew just 2 feet tall, provided with two genes, Rht1 and Rht2, that resulted in the reduced height of the plant.

Crop rotation is the practice of growing different crops sequentially on the same field to improve soil health, optimize nutrients in the soil, and combat pest and weed pressure.
Maize-potato-sugarcane-ratoon-green gram is an example of crop rotation for 3 years.

A Xerophyte is a species of plant that is adapted to survive in an environment with less water or in extremely dry soils. Example: cacti, pineapple.
A Hydrophyte is a plant species that live in water and adapt to its environment. Example: Valisineria, Hydrilla.
Thallophyta is a polyphyletic group of non-mobile organisms that are grouped based on the same characteristics. Example: Spirogyra, Ulothrix.
Hydroponics is the method of growing plants without soil.

A cash crop is a profitable crop that is grown to sell for profit. Cash crops are usually crops that attract demand in more developed nations and hence have some export value.
Out of the following options, groundnut is an important cash crop in our country. Groundnut farming in India is done on 85 lakh hectares of land and the highest productivity is from Tamil Nadu.