The term 'arable area' refers to land that is suitable for growing crops. The crossword solutions for this term are LOAM (4 letters), IRRIGATE (8 letters), STONIEST (8 letters), and ARID (4 letters). LOAM is a type of soil that is composed of clay, sand, silt, and organic matter, making it ideal for farming. IRRIGATE is the process of supplying water to land or crops in order to help them grow. STONIEST is an adjective used to describe land that is covered with stones, which can make it difficult to cultivate. ARID is an adjective used to describe land that is dry and lacking in moisture, making it difficult to grow crops.