Rangeland Ecology & Management

Get reliable science

Factors affecting weeping lovegrass seedling vigor on shinnery oak range
Author
Matizha, W.
Dahl, B. E.
Publisher
Society for Range Management
Publication Year
1991-05-01
Body

Low vigor of seedlings and stand failures plague many revegetation efforts in semiarid and arid rangelands. Phototoxicity, sandbur (Cenchrus incertus M.A. Curtis) competition, seedbed preparation (plowing vs. disking), and nitrogen (N) fertilization were studied as reasons for low vigor of Ermelo weeping lovegrass [Eragrostis curvula Schrad.) Nees] seedlings on sand shinnery oak (Quercus havardii Rydb.) range in west Texas. Oak leaf residue and sandbur-dominated grass residue extracts did not affect seed germination and initial shoot growth of lovegrass seedlings. However, these residue extracts reduced root length 92% and 21%, respectively. Survival of weeping lovegrass seedlings was not affected by even 65 sandbur plants/m2. But, herbage yield was reduced 65, 72, and 79% with 30, 45, and 65 sandbur plants/m2. Early in the growing season, unfertilized plowed (P) plots had 5.6 ppm N in the 10-20 cm soil layer compared to a maximum of 3.9 ppm on other seedbed treatments. In the surface 10 cm, the P plots had less N than the disked plots. Surface-applied N fertilizer accumulated in the upper 10 cm of soil and promoted weed growth without improving weeping lovegrass stands or seedling vigor. Weeping lovegrass seedling vigor was greatest on P and least on disked plots. Thus, plowing buried weed seeds better, put resident N more deeply into the soil for better root uptake, removed allelopathic residues from seedling contact better, and provided for much higher seedling vigor than the disked seedbeds. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020

Language
en
Resource Type
Text
Document Type
Journal Issue/Article
Digital Object Identifier (DOI)
10.2307/4002946
Additional Information
Matizha, W., & Dahl, B. E. (1991). Factors affecting weeping lovegrass seedling vigor on shinnery oak range. Journal of Range Management, 44(3), 223-227.
IISN
0022-409X
OAI Identifier
oai:repository.arizona.edu:10150/644710
Journal Volume
44
Journal Number
3
Journal Pages
223-227
Journal Name
Journal of Range Management
Keywords
plant residues
Cenchrus incertus
crop establishment
seedbed preparation
Eragrostis curvula
allelopathy
Quercus havardii
seedlings
nitrogen fertilizers
vigor
environmental factors
Texas
plant competition
rangelands