2016
DOI: 10.1614/ws-d-15-00049.1
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Critical Period for Weed Control in Grafted and Nongrafted Fresh Market Tomato

Abstract: Field experiments were conducted to determine the critical period for weed control (CPWC) in nongrafted ‘Amelia’ and Amelia grafted onto ‘Maxifort’ tomato rootstock grown in plasticulture. The establishment treatments (EST) consisted of two seedlings each of common purslane, large crabgrass, and yellow nutsedge transplanted at 1, 2, 3, 4, 5, 6, and 12 wk after tomato transplanting (WAT) and remained until tomato harvest to simulate weeds emerging at different times. The removal treatments (REM) consisted of th… Show more

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Cited by 21 publications
(24 citation statements)
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“…EST and REM studies were conducted in separate but adjacent fields similar to other CPWC study designs (Chaudhari et al 2016). The two studies were designed with the intention to overlay the data onto one graph to determine the CPWC, the period when weeds must be controlled to reach a yield threshold below the acceptable yield loss (AYL).…”
Section: Methodsmentioning
confidence: 99%
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“…EST and REM studies were conducted in separate but adjacent fields similar to other CPWC study designs (Chaudhari et al 2016). The two studies were designed with the intention to overlay the data onto one graph to determine the CPWC, the period when weeds must be controlled to reach a yield threshold below the acceptable yield loss (AYL).…”
Section: Methodsmentioning
confidence: 99%
“…If grafted watermelon exhibit greater early-season growth, more rapid canopy closure, or increased vigor, it would be expected that grafted plants have a shorter CPWC due to an enhanced weed competitive ability of the grafted plants. The duration of the CPWC was similar for grafted (2.3 wk) and nongrafted (2.5 wk) tomato ( Solanum lycopersicum L.); however, the CPWC began and ended 1 wk earlier in the grafted treatment (Chaudhari et al 2016). Thus, grafting did not eliminate or reduce the need for timely weed control in tomatoes; instead, weed control must be enacted 1 wk earlier in grafted plants relative to nongrafted plants.…”
Section: Introductionmentioning
confidence: 97%
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“…When modelling biological systems, it is desireable that each model parameter describe a biological function without interference from another parameter (Ratkowsky 1990). Previous CPWC studies have had difficulties identifying the biological significance of all modelled parameters and many authors have simply referred to those as constants that describe a mathematical function (for example see Chaudhari et al 2016, Hall et al 1992, Van Acker et al 1993. In the CTWR and CWFP models, the Datasets collected for the purpose of modelling the CPWC are unique to the conditions where they were collected, and from a statistical perspective, models that best fit the data should be chosen (Ratkowsky 1990).…”
Section: Modelling the Critical Period Of Weed Controlmentioning
confidence: 99%
“…The CWFP has been defined for soybean (Halford et al 2001, Van Acker et al 1993) and other crops (Chaudhari et al 2016, Fedoruk et al 2011, Hall et al 1992.…”
Section: Introductionmentioning
confidence: 99%