1. **Stating the problem:** Calculate the usher (likely meaning 'interest' or 'cost') on a wheat crop amounting to 1500000 produced by artificial resources. 2. **Understanding the problem:** The problem is ambiguous as it does not specify the rate or time period for calculating usher (interest or cost). Usually, usher could mean interest or additional cost incurred. 3. **Assumption:** If we assume usher means interest, we need the rate of interest and time period to calculate it using the formula: $$\text{Interest} = \frac{P \times R \times T}{100}$$ where $P$ is principal (1500000), $R$ is rate of interest, and $T$ is time in years. 4. **Since rate and time are not given, we cannot calculate a numeric answer.** 5. **Conclusion:** Please provide the rate of interest and time period to calculate usher (interest) on the crop amount.