Test: Agriculture - 2 - UPSC MCQ

Neem oil can be used as pesticide to control the proliferation of some species of insects and mites and also has applications in pharmaceutical industry as neem oil has various medicinal properties.

Rice is the main kharif crop and groundnut and cotton are also the kharif crops wheat is a raki.

Contour Bunding is one of the simple method of soil and water conservation. This technique is used at places where the land is sloppy. Due to slope, soil and nutrients erode fast which makes agriculture on this land very uneconomical. To adopt this technique the agriculture fields contours are marked and then the bunds are taken along the contours.

All of them are predominantly rain fed crops

All these crops are leguminous crop (Pulses crops), and have the capacity to fix atmospheric nitrogen through symbiotic nitrogen fixation.

Mixed farming refer to rearing of animals and cultivation of crops together.

Salinization for a long time on the irrigated land led to soil impermeability.

Maize is one of the carbohydrate rich crops; hence it is more suited for ethanol-production among the given crops.

The predominant soil in Tamil Nadu is red which supports cotton cultivation and a rich pool of skilled labour is available in Tamil Nadu.

As per scientific estimations it has been suggested that more than 2 per cent of human-induced climate warming can be attributed to rice farming. It is predominantly due to methane, a potent greenhouse gas emitted from flooded rice fields. Methanogen bacteria in the waterlogged soil produce it in large quantities.
Nitrous oxide is also released from cultivated fields due to transformation of nitrogen based fertilizers that can have a harmful climate effect.