Possible Clues:

• Artist introduced to lively rag by man of the land
• Niagara River trip to do with land management
• A king, theologically unsound, but politically reformist
• Ruralist in Indian city laughing endlessly
• A rag for the country before the rain
• Relating to land or its cultivation
• Farming-related
• Of the cultivation of plants - description of a revolution
• In a grain that's crushed the artist turns up for the land
• Of land and its cultivation