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You searched for: Publication year rev 8020-1980 Remove constraint Publication year rev: 8020-1980 Subject term Haplorthods Remove constraint Subject term: Haplorthods Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Establishment of Alfalfa by Conventional and Minimum-Tillage Seeding Techniques in a Quackgrass-Dominant Sward

Author:
G. W. Mueller-Warrant; D. W. Koch
Source:
Agronomy journal 1980 v.72 no.6 pp. 884-889
ISSN:
0002-1962
Subject:
Elymus repens subsp. repens; Haplorthods; Medicago sativa; alfalfa; application timing; discing; energy; forage; forage yield; glyphosate; labor; minimum tillage; mowing; paraquat; pesticide application; plant density; plowing; sandy loam soils; seedlings; sowing; sward
Abstract:
... Minimum-tillage establishment of forages offers potential advantages over the conventional method in terms of reducing energy and labor requirements, erosion hazard, and improving flexibility, and timeliness of operation. Our objective was to compare these methods of establishing alfalfa (Medicago sativa L.) with various herbicides, time intervals between herbicide application and seeding, and see ...
DOI:
10.2134/agronj1980.00021962007200060006x

2. Extractable Chromium as Related to Soil pH and Applied Chromium

Author:
J. H. Grove; B. G. Ellis
Source:
Soil Science Society of America journal 1980 v.44 no.2 pp. 238-242
ISSN:
0361-5995
Subject:
Haplorthods; Hapludalfs; ammonium chloride; chromium; clay loam soils; copper sulfate; dithionite; oxalates; sand; sludge; soil pH; soil sampling; water solubility
Abstract:
... The objective of this study was to evaluate the soil chemistry of added Cr(III), Cr(VI), and sludge Cr as affected by initial soil pH. Treatments of 0 and 500 ppm Cr as CrCl₃ and CrO₃, and sludge Cr at a rate of 1,400 ppm Cr were applied to Rubicon sand (Entic Haplorthod, pH 4.7), Morley clay loam (Typic Hapludalf, pH 6.0), and limed Morley clay loam (pH 7.5). Pots were sampled at 24 hours, 1, 2, ...
DOI:
10.2136/sssaj1980.03615995004400020005x

3. Extractable Iron and Manganese as Related to Soil pH and Applied Chromium

Author:
J. H. Grove; B. G. Ellis
Source:
Soil Science Society of America journal 1980 v.44 no.2 pp. 243-246
ISSN:
0361-5995
Subject:
Haplorthods; Hapludalfs; ammonium chloride; chromium; clay loam soils; copper sulfate; coprecipitation; iron; manganese; nutrient deficiencies; sand; sludge; soil pH; soil sampling; toxicity; water solubility
Abstract:
... Metal-metal interactions in soils can be very important in determining the composition and yield of plants. Chromium application has been shown to affect plant Mn concentrations and uptake, and Fe deficiency symptoms have been associated with Cr toxicity by some workers. The objectives of this study were to evaluate the changes in soil Mn and Fe resulting from added Cr(III), Cr(VI), and a high Cr ...
DOI:
10.2136/sssaj1980.03615995004400020006x