Manual Control of Thorny Mimosa (Mimosa invisa) in Cassava (Manihot esculenta)<sup>1</sup>

Alabi, B. S.; Ayeni, A.O.; Agboola, A. A.; Majek, Bradley A.

doi:10.1614/0890-037x(2004)018[0077:mcotmm]2.0.co;2

Cited by 11 publications

(8 citation statements)

References 5 publications

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“…In this study, hoe-weeding was conducted at 4, 8, and 12 WAP. Several weeding regime recommendations (Alabi et al 2004b; NACWC 1994) exist for smallholder cassava production systems, however, farmers often do not follow them because of scarcity and the high cost of labor, or lack of awareness of the scale of yield damage caused by weed competition with crops. Farmers often perform their first weeding via hoe after the period when cassava should be free of weeds (critical period); this can result in severe yield loss due to competition from weeds.…”

Section: Resultsmentioning

confidence: 99%

“…were aclonifen, clomazone þ pendimethalin, dimethenamid-P þ pendimethalin, flumioxazin þ pyroxasulfone, indaziflam þ isoxaflutole, indaziflam þ metribuzin, oxyfuorfen, and terbuthylazine þ S-metolachlor (Table 3, dark green, Table 3). Hemorrhage plant, Siam weed, giant sensitive plant, and giant potato are prominent weeds in cassava fields (Alabi et al 2001(Alabi et al , 2004aNzegbule and Ogunremi 1995;Tarawali et al 2013;Wakjira 2011). Siam weed and giant sensitive plant are reported as invasive species (Ikuenobe and Ayeni 1998;Uyi et al 2014) that reduce cassava root yield in the Humid Forest and Derived Savanna agroecologies in Nigeria.…”

Section: Resultsmentioning

confidence: 99%

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Screening preemergence herbicides for weed control in cassava

et al. 2020

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Weed competition severely constrains cassava root yield in sub-Saharan Africa; thus, good weed control measures, including the use of herbicides, are increasingly important. Herbicide trials were conducted at five locations across eastern, western, and north-central Nigeria over two cropping seasons (2014 and 2015). Nineteen premixed PRE herbicides applied at different rates were evaluated for efficacy on weeds and selectivity on cassava. Manual hoe-weeding at 4, 8, and 12 wk after planting (WAP) and two S-metolachlor + atrazine treatments commonly used by cassava growers were included for comparison. Six of the 19 PRE herbicide treatments (indaziflam + isoxaflutole, indaziflam + metribuzin, flumioxazin + pyroxasulfone, isoxaflutole, acetochlor + atrazine + terbuthylazine, and terbuthylazine + S-metolachlor) consistently provided 80% to 98% broadleaf and grass weed control up to 8 wk after treatment. Overall, PRE herbicide treatments and cassava yield were significantly positively correlated. Herbicide treatments terbuthylazine + S-metolachlor, flumioxazin + pyroxasulfone, diflufenican + flufenacet + flurtamone (respectively, 60 + 60 + 60, 120 + 120 + 120, 90 + 360 + 120, and 135 + 360 + 180 g ha−1), acetochlor + atrazine + terbuthylazine (875 + 875 + 875 g ha−1), S-metolachlor + atrazine (870 + 1,110 g ha−1), oxyfluorfen (240 g ha−1), indaziflam + isoxaflutole (75 + 225 g ha−1), indaziflam + metribuzin (75 + 960 g ha−1), and aclonifen + isoxaflutole (500 + 75 g ha−1) contributed to yields exceeding twice the Nigerian national average of 8.76 tonnes ha−1. These treatments had root yields of 1.4 to 2 times higher than plots that had been hoe-weeded three times. There were some adverse herbicide treatment effects such as delayed cassava sprouting and temporary leaf bleaching observed in indaziflam and diflufenican + flufenacet + flurtamone treatments, whereas sulfentrazone caused prolonged leaf crinkling. The PRE applications alone at rates safe for cassava did not provide adequate season-long weed control; supplemental POST weed control is needed about 10 WAP for satisfactory season-long control.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Screening preemergence herbicides for weed control in cassava

et al. 2020

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“…Na região norte-nordeste, os valores para PAI variaram de 20 a 30 dias, para PCPI, de 30 a 135 dias, e para PTPI, de 60 a 135 dias. Em estudo realizado na Nigéria, Alabi et al (2004) recomendam deixar o mandiocal livre da interferência dos 35 aos 77 dias após o plantio. Segundo Melinfonwu (1994), de modo geral, a prevenção deve ser realizada até 84 dias depois do plantio, mas, quando cultivado em consórcio com o milho, esse período poderá ser reduzido para 56 dias.…”

Section: Período Crítico De Competição Das Plantas Daninhasunclassified

Manejo de plantas daninhas na cultura da mandioca

Silva¹,

Santos

Ferreira³

et al. 2012

Planta daninha

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RESUMO -A mandioca (Manihot esculenta) é cultivada em vários países, sendo de grande importância como fonte de energia para alimentação humana e animal e na geração de empregos e renda. No Brasil, apesar de essa cultura apresentar alto potencial produtivoem alguns estudos alcançando valores superiores a 100 t ha -1 de raízes -, a produtividade nacional é baixa, atribuída em grande parte ao manejo inadequado das plantas daninhas. A interferência dessas plantas resulta em competição pelos recursos essenciais, como nutrientes, água e luz. Além disso, o controle realizado de maneira incorreta das plantas daninhas nos mandiocais dificulta outros tratos culturais e aumenta os custos de produção. Nesta revisão são abordados os aspectos relativos ao manejo das plantas daninhas na cultura, descrevendo, de forma detalhada, os principais componentes de interferência. Discute-se, em várias situações, o período crítico de competição. Por fim, são apresentados os principais métodos de controle visando à utilização do manejo integrado como forma sustentável do controle de plantas daninhas nessa cultura. Palavras-chave:Manihot esculenta, interferência, períodos de controle, manejo integrado. ABSTRACT -Cassava (Manihot esculenta) is grown in many countries, being of great importance as an energy source for food, generating jobs and income. Although this crop has been proved to have high yield potential in some studies, reaching values above 100 t ha -1 roots, its national productivity in Brazil is

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“…Hand weeding or hand harvesting infested fields is extremely difficult because stems are covered with abundant prickles. In upland areas, giant sensitiveplant grows as a biennial (Alabi et al 2004). The plant has been reported all year round in the Philippines and produces approximately 800 seeds per plant (Holm et al 1977).…”

mentioning

confidence: 99%

Seed Germination and Seedling Emergence of Giant Sensitiveplant (Mimosa Invisa)

Chauhan

Johnson

2008

Weed Science

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Giant sensitiveplant is a dominant weed in many tropical and subtropical countries because it is highly competitive and is difficult to clear by hand. Experiments were conducted to determine the effect of various environmental factors on giant sensitiveplant seed germination and seedling emergence. Light was not required for germination, though germination was stimulated by seed scarification, suggesting that inhibition of germination is mainly due to the seed coat. Germination of scarified seed was not influenced by a range of alternating temperatures. Germination increased by exposure to higher temperatures, such as might occur when vegetation is burnt, as simulated by placing nonscarified seed in an oven for 5 min. Germination increased as exposure temperature was increased from 25 C to 120 C but declined progressively with further increases and there was no germination after exposure to 200 C. Moderate salinity and osmotic stress did not inhibit germination and some seed germinated at 250 mM sodium chloride (55%) and osmotic potential of −1.0 MPa (13%). Germination was greater than 79% over a pH range of 4 to 10. Seedling emergence was 80 to 94% at depths of 0 to 2 cm but decreased progressively at deeper depths, and no seedlings emerged from seed buried at 10 cm. The results of this study identify some of the factors enabling giant sensitiveplant to be a widespread and problematic weed in the humid tropics and provide information that could contribute to its control.

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Manual Control of Thorny Mimosa (Mimosa invisa) in Cassava (Manihot esculenta)¹

Cited by 11 publications

References 5 publications

Screening preemergence herbicides for weed control in cassava

Screening preemergence herbicides for weed control in cassava

Manejo de plantas daninhas na cultura da mandioca

Seed Germination and Seedling Emergence of Giant Sensitiveplant (Mimosa Invisa)

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Manual Control of Thorny Mimosa (Mimosa invisa) in Cassava (Manihot esculenta)1

Cited by 11 publications

References 5 publications

Screening preemergence herbicides for weed control in cassava

Screening preemergence herbicides for weed control in cassava

Manejo de plantas daninhas na cultura da mandioca

Seed Germination and Seedling Emergence of Giant Sensitiveplant (Mimosa Invisa)

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Product

Resources

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Manual Control of Thorny Mimosa (Mimosa invisa) in Cassava (Manihot esculenta)¹