Agronomy MCQ Question and Answer | Agriculture MCQ Question

Antitranpirants are substances that are applied to reduce the transpiration process in plants to protect them from drying out too quickly.
Atrazine is a widely used herbicide that can be applied to control broadleaf and grassy weeds. To some extent it can also be used as Antitranspirants as in low concentrations it induces stomatal closing which leads to stopping transpiration for some time.

Thiourea is the chemical fertilizer used to treat seed potatoes to break their dormancy.
It is a catalyze inhibitor, which triggers potato tubers germination and healing of tuber injuries.

Sugar recovery is the percentage of sugar produced after processing of definite weight of sugarcane.
The Recovery rate of the sugarcane crop in India as per the latest reports from last year's financial year is about 8 - 10%.

Anabena is one of the principle "Nitrogen fixing" algal communities of blue-green algae.
Anabena is found as plankton in shallow water and on moist soil with beadlike or barrel like cells and interspersed enlarged spores to provide nitrogen to plants in soluble forms.

When ice melts, the total volume of water decreases because the density of ice is less than that of water, thus when the ice melts the volume of water will decrease.

Field capacity is the maximum limit of the water available in the soil, after the drainage of excess water. The physical definition of field capacity is the bulk water content retained in the soil at $$-$$33 kPa of the hydraulic head or suction pressure.
Thus in field capacity, the water is held at a tension of $$ - \frac{1}{3}$$ bar.

Bollworm is the common term for a moth larva that attacks the fruiting bodies of certain crops, especially cotton and it causes a huge loss in the yield.
The cotton bollworm is widely controlled by biopesticides Bacillus thuringiniensis (Bt) toxin and baculovirus HaNPV.

The seed rate of soybean produced in the summer season is more than the seed rate of soybean planted in the Kharif season.
It is around 100 - 120 kg/ha during summer and 70 - 75 kg/ha during Kharif season.

The optimum seed rate is the amount of crop harvested from the field when provided with all favorable parameters like temperature, rainfall, seed quality, soil quality, fertilizers, etc.
For tobacco plantations, the optimum seed rate is 2 - 3 kilogram/hectare.

Agronomy is the study of the crop and plants for cultivation, production, and management in the field, also dealing with its soil environment and other basic parameters.
Climatology is the study of the atmosphere and weather patterns over time.
Agriculture is the practice of growing plants and livestock.