Splitting is caused by rapid growth, especially when rain or watering follows a very dry period. Wide fluctuations in temperature can also cause splitting. This disorder can be prevented with a good management plan

Susceptible Plants- Carrot, cherry, onion, parsnip, plum, potato, rutabaga, and tomato

Symptoms- Fruits, heads, roots, and stems split lengthwise. The root then splits open as the skin cannot cope with the sudden surge in growth. This can lead to secondary infections such as bacterial soft rots making the roots virtually inedible. Apple fruits may become hollow

Prevention and Control- Improve water holding capacity of soil. Free-draining soils such as sand or chalk can pose the greatest challenge, and so the addition of plenty of well-rotted organic matter to increase the soil's moisture retentiveness can help deter the problem, as can increasing crop spacings.Consider the use of raised beds for vegetable crops.

Regular watering is also essential where soils are not very moisture retentive to ensure a steady growth rate.Give the rows a thorough soaking every two weeks initially, rising to every week as the vegetables near their harvest stage (allowing for rainfall).By ensuring that the plants never fall short of water, you should harvest perfect vegetables for the rest of the season.
 

In fruits physiological disorders such as splitting are problems that are not caused by insects or diseases, but rather by the climate (temperature, rain, humidity) and by management practices that change the micro-climate endured by the plant. Among these practices would be training and pruning, irrigation, fertilization and harvest procedures.

In addition to these factors, in many cases, certain varieties are more predisposed to a splitting disorder than others. Plant crops suitable to the climate and soil conditions, it is simpler to do than to change the soil type.

Changing soil type can be expensive to do and very difficult to maintain. It is easier to use sound gardening practices. Do not over fertilize. During dry periods make sure crops are well watered. In most cases splitting can be prevented by proper management.