Crop loss can be caused by many factors: soil, climate & weather events, pests & diseases, site selection, seed quality, and others. Climate change can affect these in many ways:
Drought conditions dry soil and make it susceptible to blowing and erosion; it dries out & stresses plants, stunts growth, and reduces food production.
Heat waves throw off plant's life cycle, stunting growth, or drying/wilting plants past the point of recovery.
Powerful storms can break stems, flatten crops, cause damaging erosion & topsoil loss, flood & inundate fields, and lead to rot and physical damage of crops.
Flooding can submerge fields, resulting in complete crop loss or major impacts to livestock production.
Freshwater scarcity can cause a lack of irrigation resulting in poor crop, no crop and livestock loss.
Erratic weather can cause frost damage, freezing, or burn plants as well as flatten crops.
Now that you know a bit more about this climate change-related problem....