The daily turnover can be considerable: transpiration from 0.4 cm of water from a crop surface on a clear sunny day corresponds with a water loss from the root zone of than kg ha-1 d-1. Most water that plants take up from the soil is again lost to the atmosphere by transpiration through the same openings. ģ SOIL WATER BALANCE Plant production involves CO2 intake through stomatal openings in the epidermis.
(Source: LANDY / DUNSTE) Diunduh dari: …. When the excess has drained away the amount of water retained in the soil is termed its field capacity, when some of its pore spaces are still free of water. Water in excess of hygroscopic and capillary water is termed gravitational water, which is of a transitory nature because it flows away under the influence of gravity. Since it is held against the force of gravity it is permanently available for plant growth and it is this type of soil water which contains plant nutrients in solution. Water forming thicker films and occupying the smaller pore spaces is termed capillary water. Ada tiga macam bentuk lengas tanah: Water adhering in thin films by molecular attraction to the surface of soil particles and not available for plants is termed hygroscopic water. Salah satu faktor yang sangat penting dalam proses pedologis dan pertumbuhan tanaman. Priyono dan Soemarno psl-ppsub nopember 2012Ģ LENGAS TANAH Definisi: Air yang disimpan dalam tanah.
