Table of Contents Author Guidelines Submit a Manuscript
Applied and Environmental Soil Science
Volume 2012 (2012), Article ID 769357, 10 pages
http://dx.doi.org/10.1155/2012/769357
Research Article

Oilseed Meal Effects on the Emergence and Survival of Crop and Weed Species

Department of Soil and Crop Sciences, Texas A&M University, 370 Olsen Boulevard, 2474 TAMU, College Station, TX 77843-2474, USA

Received 28 October 2011; Revised 20 December 2011; Accepted 23 December 2011

Academic Editor: Philip White

Copyright © 2012 Katie L. Rothlisberger et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Oilseed crops are being widely evaluated for potential biodiesel production. Seed meal (SM) remaining after extracting oil may have use as bioherbicides or organic fertilizers. Brassicaceae SM often contains glucosinolates that hydrolyze into biologically active compounds that may inhibit various pests. Jatropha curcas SM contains curcin, a phytoxin. A 14-day greenhouse study determined that Sinapis alba (white mustard), Brassica juncea (Indian mustard), Camelina sativa, and Jatropha curcas applied to soil at varying application rates [0, 0.5, 1.0, and 2.5% (w/w)] and incubation times (1, 7, and 14 d) prior to planting affected seed emergence and seedling survival of cotton [Gossypium hirsutum (L.)], sorghum [Sorghum bicolor (L.) Moench], johnsongrass (Sorghum halepense), and redroot pigweed (Amaranthus retroflexus). With each species, emergence and survival was most decreased by 2.5% SM application applied at 1 and 7 d incubations. White mustard SM incubated for 1 d applied at low and high rates had similar negative effects on johnsongrass seedlings. Redroot pigweed seedling survival was generally most decreased by all 2.5% SM applications. Based on significant effects determined by ANOVA, results suggested that the type, rate, and timing of SM application should be considered before land-applying SMs in cropping systems.