Bookcover of Site-Specific Weed Control in On-Farm Research
Booktitle:

Site-Specific Weed Control in On-Farm Research

Improving Prediction-Based Management Decisions and Automating Data Collection

VDM Verlag Dr. Müller (2009-09-10 )

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ISBN-13:

978-3-639-19872-0

ISBN-10:
3639198727
EAN:
9783639198720
Book language:
English
Blurb/Shorttext:
This thesis examines, in both an experimental and theoretical context, the conditions under which site- specific management is likely to be advantageous. Initially, site-specific and broadcast herbicide treatments were applied in a large-scale block design , then subsequently compared using site-specific yield data. I calculated the net return as a function of the proportion of field treated and determined the theoretical threshold necessary to make site-specific weed control profitable. Using supplemental quadrat count data, I parameterized a relationship describing the competitive effect of wild oat on spring wheat using the site-specific yield data. I suggest that creating locally parameterized stochastic functions may improve the accuracy of input response prediction over regional small-plot experiments because of field-specific effects, which are not calibrated by regional small plot experiments. Lastly, I investigated the importance of weed demography in weed control decisions and developed an analytical approximation to the long-term economic threshold based on the population growth rate.
Publishing house:
VDM Verlag Dr. Müller
Website:
http://www.vdm-verlag.de
By (author) :
Ed Luschei
Number of pages:
88
Published on:
2009-09-10
Stock:
Available
Category:
Ecology
Price:
49.00 €
Keywords:
Ecology, Weeds, agriculture, Agroecology, decision support system, GIS, GPS, Competition, population dynamics, Economic Threshold

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