Weed Management in Two Potato (<i>Solatium tuberosum</i>) Cultivars Using Tillage and Pendimethalin

Nelson, D. C.; Giles, J. F.

doi:10.1017/s0043174500071836

Cited by 33 publications

(33 citation statements)

References 5 publications

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“…There were no significant differences in weed dry mass among clones. No comparative published data are known for weed dry weights in sweetpotato; however, by inference, weed dry mass differed by 35% (nonsignificant at P ≤ 0.05) for two Irish potato clones (Nelson and Giles, 1989).…”

Section: Resultsmentioning

confidence: 92%

Sweetpotato Clone Tolerance to Weed Interference

Bonte¹,

Harrison²,

Motsenbocker³

1999

HortSci

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Field experiments were conducted to assess how sweetpotato [Ipomoea batatas (L.) Lam.] clones interfere with weeds and how clones tolerate weed interference. Eleven clones with architecturally different canopies were evaluated for yield, canopy surface area and dry mass, weed dry mass, and light interception at ground level. A 2-fold difference in ground area covered by canopy surface area was observed among the eleven clones 42 days after planting, and a 3-fold difference in canopy dry mass at harvest. Yields were reduced from 14% to 68% by weed interference. The yields of high-yielding clones, `Beauregard', `Excel', L87-125, `Regal', `Centennial', and W-274, were reduced to a significantly greater extent by weeds than were yields of the other five clones. No differences were observed between clones for weed suppression as measured by weed dry mass at harvest and ground light interception. Short-internode and long-internode clones had similar competitive abilities. Yield of high-yielding clones was impacted more by weed interference than was that of low-yielding clones.

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Section: Resultsmentioning

confidence: 92%

Sweetpotato Clone Tolerance to Weed Interference

Bonte¹,

Harrison²,

Motsenbocker³

1999

HortSci

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“…Therefore, this crop relies greatly upon chemical and mechanical weed control methods (Nelson & Giles, 1989), even if the growing concern regarding the use of agrochemicals is forcing the search for other solutions. The choice of more competitive potato cultivars could prevent or reduce the dosage of chemical herbicides, enhance the efficacy of mechanical harrowing, hoeing and ridging (Nelson & Giles, 1989;Vangessel & Renner, 1990a). This could be beneficial to organic farming systems where chemical weed control is unavailable.…”

Section: Introductionmentioning

confidence: 99%

Retracted: Identifying potato (Solanum tuberosum) characteristics associated with competitiveness against weeds

et al. 2010

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We have found some characteristics associated with competitiveness that can be used to identify potato (Solanum tuberosum) genotypes able to maintain high yields in the presence of weeds. A 2-year field experiment was carried out to assess the competitive ability (Cb) of six potato cultivars grown as pure stands and in mixture with a natural weed infestation partially suppressed by mechanical weed control. The treatments were arranged in a split-plot design in a randomised complete block replicated three times. Crop characteristics at 20, 30 and 40 days after emergence (DAE), and crop, weed and competition parameters were recorded at final harvest. The marketable tuber yield in the absence of weeds ranged from 34.0 to 47.5 t ha )1 and Liseta and Marabel were the most productive cultivars. Weeds reduced the potato yield from 5.4% to 15.8%. There was significant variation in crop Cb among potato genotypes, with the highest value in the erect late maturing genotypes, Desiree and Kurola (Cb = 2.4) and the lowest in the early ⁄ intermediate maturing genotypes, Agata and Mona Lisa (on average Cb = 1.3). Cb was positively correlated with the potato above-ground biomass, especially at early growth stages and with early development of plant canopy. The results indicate that potato yield loss due to incomplete weed control can be reduced by cultivar choice, which can be part of a wider weed management strategy.

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“…However, yield was not reduced when weeds were allowed to grow in the periods from planting until potato emergence and from planting until 20-cm potato height. Considerable root pruning by cultivation equipment at later stages of crop development has been reported (Nelson and Giles 1989), and may have contributed to lower tuber yield in these experiments for treatments that received cultivation beyond 20-cm potato height. However, further studies are needed to study if cultivation throughout the entire season poses detrimental effects to potato tuber yield or whether the variety used in this study has some level of weed tolerance.…”

Section: Potato Growth Intervalsmentioning

confidence: 84%

Effect of Weed Emergence Time and Intervals of Weed and Crop Competition on Potato Yield

Ciuberkis¹,

Bernotas²,

Raudonius³

et al. 2007

Weed Technology

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A field study was conducted at Vezaiciai branch of the Lithuanian Institute of Agriculture from 1998 to 2000 to determine weed emergence dynamics in potato and to estimate the effect of different intervals of weed crop competition on potato tuber yield if regular interrow cultivation was applied. Treatments varying in intervals of weed-free conditions and competition were laid out in a randomized complete block design with six replications. The greatest emergence of annual broadleaf such as common lambsquarters and other weeds (62 to 86% of the season total) in the crop was observed in the period from potato planting until flowering. Emergence of winter annuals such as field violet and scentless mayweed was greatest in the period from the 20-cm potato plant height until harvesting. The 20-cm potato height was the most important stage affecting potato yield loss due to weed competition. Potato yield losses due to weed competition were minimized when weeds were removed before the potatoes reached 20 cm or kept clean from this point forward. The results indicated that the critical weed-free period, when weed competition was detrimental to yield, started from planting and lasted until 25 d after flowering.

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Weed Management in Two Potato (Solatium tuberosum) Cultivars Using Tillage and Pendimethalin

Cited by 33 publications

References 5 publications

Sweetpotato Clone Tolerance to Weed Interference

Sweetpotato Clone Tolerance to Weed Interference

Retracted: Identifying potato (Solanum tuberosum) characteristics associated with competitiveness against weeds

Effect of Weed Emergence Time and Intervals of Weed and Crop Competition on Potato Yield

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