"Cream crop" is not a commonly used phrase in the English language, therefore, antonyms for it are not readily available. However, the word "cream" can be interpreted as something of high quality, desirable, or delicious. Therefore, antonyms for cream can include low-quality, undesirable or unpleasant. For crop, antonyms can include barren, infertile, unproductive, or fruitless. In summary, antonyms for "cream crop" would be a disappointing or unsatisfactory harvest. It is important to note that the context in which the phrase is used can significantly impact the type of antonyms appropriate for it.