Tag: modern agriculture

The primary cause of heat buildup in cities is insolation i.e. absorption of solar radiation by roads and buildings. Storage of this heat by building material results in subsequent re-radiation. Due to transpiration of plant surface, its temperature does not rise 4-5 degree above the ambient and sometimes is cooler. This then translates into the cooling of the environment. Hence rooftop gardening reduces the overall heat absorption of the building which then reduces energy consumption. Thus the correct answer is option A.

Precision farming is a concept of crop management based on observing, testing, measuring and responding to field variability in crops. In this farming, they use research in weathers, test the soil temperature, humidity, growth and moisture.

A polyhouse also called polytunnel is a tunnel made of polyethelene semi-circular, square or elongated in shape. Solar radiations are used to heat up the interior. This warms the plants, soil, and other things inside the building faster than heat can escape the structure. This warmed air in interior surfaces is retained in the building by the roof and wall.Temperature, humidity and ventilation is controlled by equipment fixed in the polytunnel or by manual opening and closing of flaps. Thus plants grow under the complete controlled condition in polyhouse farming. 

Drip irrigation is the best for watering plants in a polyhouse. In drip irrigation system, water under high pressure is forced through nozzles arranged on a supporting stand at about 1 feet height. This enables watering at the base level of the plants.This watering system ensures that water does not fall on the leaves or flowers as it leads to disease and scorching problems.

Precision farming is a farming system in which inter and intra-field variability in crops are observed and responded to. The goal of precision farming is using information technology in decision making for optimizing returns on inputs and at the same time preserving resources. Polythene sheets prevent weed and soil pathogens growth. They accelerate the uptake of micronutrients from the soil. They reduce the irrigation water requirement of the crop and thus conserve soil moisture. Thus polythene sheets are used in precision farming.

Roof gardening is a type of garden which is started on the roof of the building. It is an ideal way of urban gardening.  The advantage of this gardening is it helps in runoff stormwater, these are energy efficient, improves air quality, etc.

Drip irrigation also called micro irrigation system is the best for watering plants in a polyhouse. In drip irrigation system, water under high pressure is forced through nozzles arranged on a supporting stand at about 1 feet height. This enables watering at the base level of the plants.This watering system ensures that water does not fall on the leaves or flowers as it leads to disease and scorching problems.

Precision farming is a concept based on observing, testing, measuring and responding to field variability in crops. In this farming, they use research in weathers, test the soil temperature, humidity, growth and moisture. They also rotate crops to improve their diversity and monitor irrigation.