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Web URL(s): | https://scisoc.confex.com/scisoc/2018am/meetingapp.cgi/Paper/113812 Last checked: 11/21/2018 Requires: JavaScript |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Chastain, Thomas G.;
Anderson, Nicole P. |
Author Affiliation: | Chastain: Oregon State University, Corvallis, OR; Anderson: Crop and Soil Science, Oregon State University, Corvallis, OR |
Title: | Determination of harvest timing in grass seed crops by portable NIR spectroscopy |
Section: | C04 seed physiology, production and technology Other records with the "C04 seed physiology, production and technology" Section
Seed physiology, production and technology oral Other records with the "Seed physiology, production and technology oral" Section
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Meeting Info.: | Baltimore, Maryland: November 4-7, 2018 |
Source: | ASA, CSSA and SSSA International Annual Meetings. 2018, p. 113812. |
Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Canadian Society of Agronomy] |
# of Pages: | 1 |
Abstract/Contents: | "Seed moisture content (SMC) is the most reliable indicator of seed maturity and harvest timing in cool-season grass seed crops. The problem is that the most widely adopted SMC testing methodologies are slow and as a result, it is difficult to make timely harvest decisions. The objective of the study was to determine the feasibility of using portable near-infrared reflectance spectroscopy (NIR) as a rapid alternative to the oven method for determination of SMC in perennial ryegrass (Lolium perenne L.), tall fescue [Schedonorus arundinaceus (Shreb.) Dumort.], and orchardgrass (Dactylis glomerata L.) seed crops. Daily testing of SMC began when the three experimental crops were at BBCH 69 and continued until seed harvest in two years. Samples were collected by stripping seed from 30 spikes or panicles into airtight containers from each crop until ready for NIR determination of SMC in the field or by laboratory air-oven method (130°C). In perennial ryegrass, NIR determination of SMC over the course of seed development was strongly related to the oven method in both years (r = 0.958, P < 0.01). The SMC values provided by NIR also showed a good relationship with the oven method in orchardgrass (r = 0.905, P < 0.01). Differences in SMC measurement were observed in tall fescue; the relationship of NIR SMC to oven SMC in turf-type tall fescue was similar to other species (r = 0.904, P < 0.01) but NIR SMC in forage-type tall fescue was more variable in relation to oven SMC (r = 0.827, P < 0.05). Spring agronomic practices including plant growth regulators, foliar fungicides, and nitrogen (urea) had no influence on NIR determination of SMC compared to untreated controls. The portable NIR is a promising tool for rapidly measuring SMC for determination of harvest timing in grass seed crops." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! "144-2" |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Chastain, T. G., and N. P. Anderson. 2018. Determination of harvest timing in grass seed crops by portable NIR spectroscopy. Agron. Abr. p. 113812. |
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