waterlogging vs water logging

Some examples from the web:

• Incubate at 18 to 24 ºC with sufficient light and high relative humidity with appropriate watering to avoid waterlogging or drought stress (section 7.7).
• The good soil texture, with soils that are neither clayey nor heavy, prevents waterlogging and instead favours the best possible physiological conditions of the trees, whose crown is less threatened by fungal and bacterial diseases.
• Incubate for up to two weeks at 25 to 28 ºC and high relative humidity with appropriate watering to avoid waterlogging or drought stress.
• Control of possible pests and/or diseases will be directed towards the application of growing methods such as: disinfection of seeds, treatment of seedbeds, less irrigation in order always to avoid waterlogging the ground and excessive earthing up.
• Even now, when the Rhine floods, the groundwater in areas which are prone to waterlogging rises to the surface, and this is the case in the inhabited area of Altrip.
• Sustained waterlogging, clogged soil and floods meant that cultivated land became inaccessible.
• Grow the test plants in quarantine facilities for up to four weeks at 25 to 30 ºC and high relative humidity with appropriate watering to prevent waterlogging or wilting through water deficiency.

Some examples from the web:

• Sampling should be avoided during or immediately following long periods (greater than 30 days) of drought or water logging.
• Permeability is generally good, with winter water-logging being due to the presence of small areas of hardpan, rich in limestone and sandy clay.
• The logging caused pollution of their water catchment areas with sediment displacement and the loss of many sago palms and other forest products and animals that form the staple Penan diet.
• It is also true that many of the problems which exist because of water shortage, droughts and floods, which we are trying to solve here, were caused by our human intervention, such as logging, plantations and earlier water controls.