Critical period of weed control in transplanted chilli pepper

Amador-Ramírez, Mario Domingo

doi:10.1046/j.1365-3180.2002.00278.x

Cited by 28 publications

(27 citation statements)

References 19 publications

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“…The data on weed biomass support this conclusion (Figs 1 and 2). Ghosheh and colleagues (1996) pointed out that long critical periods are indicative of more competitive crops (Amador‐Ramirez, 2002). However, it must be remembered that in the experiments reported in this paper, weed emergence may have been delayed by the use of trifluralin as a pre‐planting treatment.…”

Section: Discussionmentioning

confidence: 99%

“…The development of an Integrated Weed Management System (IWM) requires knowledge of the behaviour of weeds in the agro‐ecosystem, including possible effects on crop yield (Amador‐Ramirez, 2002). The critical period of weed control is a key component of strategies for IWM and the results of the experiments contribute to the development of such a system for Turkish cotton growers.…”

Section: Discussionmentioning

confidence: 99%

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Critical periods for weed control in cotton in Turkey

Bükün

2004

Weed Research

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Field studies were conducted over 4 years in southeastern Turkey in 1999-2002 to establish the critical period for weed control (CPWC). This is the period in the crop growth cycle during which weeds must be controlled to prevent unacceptable yield losses. A quantitative series of treatments of both increasing duration of weed interference and of the weed-free period were applied. The beginning and end of CPWC were based on 5% acceptable yield loss levels which were determined by fitting logistic and Gompertz equations to relative yield data representing increasing duration of weed interference and weed-free period, estimated as growing degree days (GDD). Total weed dry weight increased with increasing time prior to weed removal. Cotton heights were reduced by prolonged delays in weed removal in all treatments in all 4 years. The beginning of CPWC ranged from 100 to 159 GDD, and the end from 1006 to 1174 GDD, depending on the weed species present and their densities. Practical implications of this study are that herbicides (pre-emergence residual or post-emergence), or other weed control methods should be used in Turkey to eliminate weeds from 1-2 weeks post-crop emergence up to 11-12 weeks. Such an approach would keep yield loss levels below 5%.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Critical periods for weed control in cotton in Turkey

Bükün

2004

Weed Research

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“…The lower tuber yield in 2011 can be attributed to the higher weed density compared with 2010. Decrease in crop performance with increasing duration of weed interference has been reported by some researchers working on potato (Thakral et al 1989;Ahmadvand et al 2009) and other crops (Amador-Ramirez 2002;Bukun 2004;Mohammadi et al 2004). Yield responses and critical period of weed control Since a significant interaction between year and weed competition levels was observed (data not shown), relative data were not pooled across the year.…”

Section: Resultsmentioning

confidence: 96%

Determination of the critical period of weed control in potato (Solanum tuberosumL.)

Karimmojeni

Barjasteh

Mousavi

et al. 2014

New Zealand Journal of Crop and Horticultural Science

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Field studies were conducted in north-eastern Iran in 2010 and 2011 to establish the critical period of weed interference in potato (Solanum tuberosum L.) and to investigate the effects of weed interference on weed biomass. The critical period for weed control in potato based on a 5% acceptable yield loss level was calculated by fitting logistic and Gompertz equations to relative yield data. Total dry biomass and total number of weeds increased as the duration of weed infestation increased. The beginning of the critical period for weed control was 19 days after potato emergence in both years. The end of the critical period for weed control in 2011 was 22 days after potato emergence, whereas in 2010 the beginning and end of the critical period for weed control occurred simultaneously. Tuber yields of potato were reduced by prolonged delays in weed removal in both years. The practical implication of this study is that weeds must be controlled during the first 3 weeks of the crop's growing season. Such an approach would keep yield loss levels below 5%.

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“…Results of the experiments showed that the yield of pepper significantly declined with increasing duration of weed presence and this response was in agreement with previous findings reported on other crops (Van Acker et al . 1993; Medina 1995; Amador–Ramirez 2002; Bukun 2004; Arslan et al . 2006; Tursun et al .…”

Section: Resultsmentioning

confidence: 99%

“…Although many studies have been conducted to determine the CPWC in various crops under various environmental conditions, there are a limited number of studies on the critical period for weed control in vegetables in general and pepper in particular (Weaver 1984; Baumann et al . 2000; Amador–Ramirez 2002; Tursun et al . 2004, 2007; Buckelew et al .…”

mentioning

confidence: 99%

Critical period for weed control in direct seeded red pepper (Capsicum annum L.)

Tursun

Akinci²,

Uludağ

et al. 2012

Weed Biology and Management

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Direct seeded red pepper is a cash crop in Kahramanmaraş province of Turkey as well as some other nearby provinces. Weeds are a major constraint in red pepper production. Field studies were conducted to determine critical period for weed control (CPWC) in direct seeded spice pepper in Kahramanmaraş, in 2008 and2009.The CPWC in red pepper based on a 2.5%, 5% and 10% acceptable yield loss (AYL) was calculated by fitting logistic and Gompertz equations to relative yield data. The CPWC in red pepper was determined from 0 to 1087 growing degree days (GDD) in 2008 and from 109 to 796 GDD in 2009 for 10% AYL after crop emergence in red pepper. For 2.5-5% AYL, the CPWC starts with germination and lasts until harvest. Direct seeded red pepper is very vulnerable to weed competition and weed control programs for direct seeded spice pepper in Turkey should include pre-emergence and residual herbicides.Keywords: acceptable yield loss (AYL), critical period of weed control (CPWC), direct seeded pepper, red pepper (Capsicum annum L.), spice pepper, weeds.

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Critical period of weed control in transplanted chilli pepper

Cited by 28 publications

References 19 publications

Critical periods for weed control in cotton in Turkey

Critical periods for weed control in cotton in Turkey

Determination of the critical period of weed control in potato (Solanum tuberosumL.)

Critical period for weed control in direct seeded red pepper (Capsicum annum L.)

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