Step 1: Understanding the Concept:
Agronomy uses specific terms to describe how crops are arranged in space and time on a farm or region.
Step 2: Detailed Explanation:
Let us define the terms in the options:
1. Cropping Pattern: This refers to the yearly sequence and spatial arrangement of crops and fallow on a given land area. It represents the proportion of area under different crops at any given time.
2. Crop Rotation: This is the practice of growing different crops in a planned, repeating sequence on the same land to maintain soil fertility and break pest cycles. It is a temporal component, but does not capture the overall spatial pattern of an entire region.
3. Cropping System: This is a broader term that includes the cropping pattern used on a farm and its interaction with available farm resources, technology, and environmental factors.
4. Double Cropping: This is the practice of growing two crops on the same land in a single year, which is a specific type of cropping pattern.
Step 3: Final Answer:
The yearly sequence and spatial arrangement of crops is defined as the Cropping pattern, corresponding to option (B).