GENERAL KNOWLEDGE

Detailed explanation-1: -Option D-Patela, Roller and Scrappers, all these three are used to implement land levelling. All these help in preparing the field for agricultural purposes by smoothing and moulding the field.

Detailed explanation-2: -There are several methods for land leveling design. These methods are: Plane method, Profile method, Plan inspection method and Contour adjustment methods. The procedures adopted to use these methods are briefly presented in this lesson. The plane method is the most commonly used method of land levelling design.

Detailed explanation-3: -And finally, a leveller is used to level the soil. A hoe is a tilling tool that can be used by a farmer by hand for weed removal and loosening of soil.

Detailed explanation-4: -Land leveling increases yield to a large extend because it improves weed control. Improved water coverage from better land leveling reduces weeds by up to 40%. This reduction in weeds results in less time for crop weeding. A reduction from 21 to 5 labor-days/ha is achieved.