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Effects of Natrustoll Soil Horizons on Germination, Emergence, and Growth of Four Grasses 1
Author(s) -
McGinnies William J.,
Ludwig Jim R.
Publication year - 1978
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1978.00021962007000060046x
Subject(s) - agronomy , bromus inermis , elymus , germination , forage , revegetation , grassland , biology , environmental science , botany , poaceae , ecological succession
Rehabilitation of low‐value saltgrass [ Distichlis stricta (Torr.) Rydb.] meadows involves elimination of the existing vegetation and establishment of palatable forage grassy. The seeded forage grasses have frequently failed to become established in field plantings on Natrustoll (Solonetz) soils, particularly where the B and C horizons have been brought to the surface by plowing. To determine how soil material from the Natrustoll soil horizons affects grass establishment, soil from A, B, and C horizons was placed in pots in a greenhouse, and emergence, establishment, and growth of four promising range grasses were measured. We found that Agropyron elongatum , A. desertorum , Elymus junceus and Bromus inermis could readily be established on soil from the A and B horizons of the Natrustoll soil found in the saltgrass meadows. On the C horizon, all species would germinate and emerge (although germination and emergence were slower), but only A. elongatum could become established. Herbage yields on the C horizon were less than 5% of yields on A or B horizons. We attributed the poor establishment and yield on the C horizon to its saline‐alkali nature (a pH of 8.8, a conductivity of 12.6 mmho/cm, and a sodium adsorption ratio of 78.6).