METHOD FOR INDICATING ACIDITY OF GLEY SOILS OF NATURAL FORAGE LANDS Russian patent published in 2000 - IPC

FIELD: agriculture, in particular, meadow culture. SUBSTANCE: method involves determining flora component of plant communities and design covering of separate kinds; using combinations of indicator groups of kinds; indicating minimum number of kinds providing displaying of its indicating properties for each group; determining pH value of saline soil at intervals: 4.0-4.4; 4.5-5.2; 5.3-5.8; 5.6-6.0 and above 6.0 at certainty rate of 90%. Method is easily accomplished, because indicator groups mainly include kinds well known to agricultural workers. Method may be used for selecting primary objects of drainage amelioration and for evaluating liming costs. EFFECT: increased efficiency in determining acidity extent of gley soils of natural forage lands, in particular, bottom lands poor in chernozem, and improved quality of natural forage lands. 1 tbl, 1 ex