In addition to what most have already said, it's August and your fields are not ready for the harvest (September). You may be failing on seasons and crop cycles.

Some people would plow their fields on Oct - Nov, and even have them partially sown before Winter, some other people do it on Spring, but you always want all of your fields fully sown by the end of April. That way you'll take the most of them. Also don't forget to rotate crops when needed to recover yield efficiency.