Agronomy MCQ Question and Answer | Agriculture MCQ Question

Seed treatment is the treatment of seeds by applying fungicide, insecticide, or a combination of both, to seeds to disinfect them from seed-borne pathogens and storage insects.
Seed treatment is done mainly to control the disease.

Hectare-furrow slice (HFS) is the assumed mass of a hectare to a depth of 15 cm, 2,200 Mg (metric tons, 1,000 kg. Acre-furrow (AFS) is the assumed mass of an acre to a depth of, 1,000 tons (2,000 lbs)
The approximate weight of surface 15 cm soil of a one-hectare field is approximately 2 million i.e. 2.24 × 10⁶ kg.

Oryza galberrima is the variety of rice mainly grown in Africa which is why it is also known as African Rice. It was first domesticated and grown in West Africa around 3,000 years ago.
It has been replaced by higher-yielding Asian rice. In comparison to Asian Rice, African rice is hardy, pest resistant, low- labour, and suited to a larger variety of African conditions.

A hollow-cathode lamp (HCL) is the type of cold cathode lamp used in Physics and chemistry as a spectral line source. It is generally used for AAS i.e. Atomic Absorption Spectrometers.
An HCL consists of a glass tube containing a cathode, an anode and a buffer gas usually a noble gas.

A sequence cropping is a rotation system approach in crop production that enables the available natural resources to be preserved and more efficiently utilized.
In the dry land of Rajasthan, the best combination of sequence cropping is Gram + Mustard.

Indica rice is one of the major ecogeographical races of Oryza Sativa. The Asian rice is subdivided into two main subspecies that is Indica and Japonica with over 40,000 varieties.
Indica is the major type of rice grown in the tropics and subtropics. They grow mostly in the Philippines, India, Pakistan, Java, Srilanka, Indonesia and Central and southern China.

A dispersant or dispersing Agent is a substance, typically a surfactant, that is added to a suspension of solid or liquid particles in a liquid to improve the separation of the particles and to prevent their settling or clumping.
Cohesion is the force or action or fact of forming a united whole.
Dispersing agents reduce cohesion between similar particles.

The root density is the estimate of soil volume explored by a root system and consequently the amount of water and nutrients available to the plant.
Root density is higher under irrigated soil in comparison to dry soil or soil of dryland or rainfed area. This is because the moisture and water content in the soil leads to more supply of nutrients which ultimately enhance the density of roots.

Simazine, Atrazine, and Alachlor are the common herbicides used for weed control in sugarcane whereas the most used one is atrazine.
Simazine is a selective herbicide used for the control of broadleaf weeds and annual grasses in sugarcane.
Atrazine is an herbicide of the triazine class. It is used to prevent the preemergence of broadleaf weeds in crops.
Alachlor is an herbicide from the chloroacetanilide family. It is an odorless, white solid used to control annual grasses and broadleaf weeds in crops.

Allelopathy is derived from the greek derived compounds allilon means one to another and pathy means natural harm or suffering. This term was first used by the Austrian professor Hans Molisch in 1937 which means the effect of plants on each other.
He used the term to describe biochemical interactions through which a plant inhibits the growth of neighboring plants.