Agronomy MCQ Question and Answer | Agriculture MCQ Question

The trench method is also known as the Java method of planting sugarcane. In this method, trenches at a distance of 75 - 90 cm are dug with the help of a ridger or manually to save the cop from lodging.
This practice is used mostly in coastal areas where the crops grow very tall and the strong winds during the rainy season cause lodging of canes.

The ripening process in rice includes young panicle formation to heading and flowering and the other from fertilization to grain maturation.
Because rice is a tropical crop, the average temperature during the growing season is between 20° and 25° C, with plenty of sunshine throughout its life cycle.

The dough stage of any agricultural crop means when the kernels or seeds are well filled, and on squeezing the liquid comes out as a dough like consistency, hence termed the dough stage. It refers to the stage of seed kernels from milking to hardening.

Of these gases, CFC, i.e., chlorofluorocarbons, cause major destruction to the ozone layer, which shields the earth from harmful ultra-violet radiation.
The most common sources of CFCs are refrigerants used in AC and refrigerators, while aircraft halon and aerosol sprays also emit CFCs into the atmosphere.

ABA (abscisic acid) is an important plant hormone that regulates numerous aspects of plant growth, development, and stress responses.
Violaxanthin is the precursor of Abscisic acid. A Whereas Precursor is any substance, mostly enzymes, which on application to an inactive substance converts it to an active one. Hence, violaxanthin activates abscisic acid for its work.

Intercropping is the practice of growing two or more crops on the same agricultural land in a season.
It is very beneficial as it leads to increased profit, ergonomic usage of the land and prevention of soil erosion. It also adds nutrients to the soil for the main crop.
It mainly adds an advantage in yield due to the development of temporal complementarity as well as spatial complementarity.

The inflorescence is nothing but the arrangement of flowers on the plant. The stem holding the whole inflorescence is called a peduncle.
The inflorescence of wheat is spike spikelet, a type of racemose inflorescence, in a common language also called ear.

The first genetically modified potato developed at CPRI (Central Potato Research Institute) is named Protato. It was created to increase the protein content of potatoes and it contains nearly 60% more protein than a regular potato.
To make this hybrid, the genes from potato plants are crossed with the genes from grain amaranthus.

Beushening or cross ploughing is a condition of ploughing in a standing rice crop when the weeds grow simultaneously for up to 30 - 40 days. Then ploughing is done in a submerged rice field with 5 - 10 cm of water. It is a traditional rice cultivation technique, commonly used in rainfed regions of eastern India like Assam, Bihar, Orrisa and West Bengal.

A rotovator is an agricultural implement that can serve both as a primary tillage implement and a secondary tillage implement, depending on its use and settings.

As a primary tillage implement, a rotovator is used to perform deep soil tillage to break up hard and compacted soil, prepare the field for planting, and bury crop residues. It is capable of working at a greater depth and is often used to prepare the soil for the initial seedbed preparation.

As a secondary tillage implement, a rotovator is used for shallow tillage after the primary tillage is done. It is used to create a finer seedbed, control weeds, and incorporate fertilizers or amendments into the soil. In this role, it helps in refining the soil structure and preparing it for planting.

Since a rotovator can perform both primary and secondary tillage operations, the correct answer is "D. Both A and B."