Managing Commelina Species: Prospects and Limitations

Isaac, Wendy-Ann P.; Gao, Zongjun; Li, Mei

doi:10.5772/55842

Cited by 17 publications

(10 citation statements)

References 27 publications

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“…listed as indicators of healthy soils are native species of the Savannah [49][50][51]. Moreover, C. benghalensis, S. acuta, and A. gayanus are reported to exhibit steady growth in less favorable environments [52][53][54]. Similarly, R. cochinchinensis and C. benghalensis are reported to be abundant and tend to dominate fallow fields [54,55].…”

Section: Farmers' Perception and Indigenous Indicators Of Soil Healthmentioning

confidence: 99%

Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana

et al. 2018

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Efforts to improve soil productive capacity aimed at boosting crop production in the Northern Ghana has primarily focused on field-based experiments with little documentation on farmer practice and local indigenous knowledge of soil management. A sample group of 114 farmers from five farming communities in the Guinea Savannah was interviewed to evaluate their indigenous knowledge of crop production practices in the context of soil health, fertilization management, and crop yield. Data were collected using semi-structured interviews and responses for each category were calculated using simple proportions. Farmers’ fertilization practice was primarily influenced by fertilization resource availability and crop yield response. The results showed that inorganic fertilization was the commonest fertilization type among farmers. Farmer local indicators of soil health were predominantly limited to visually observable signs such as presence or absence of indicator plants, growth vigor of plants, soil color, and tilth, texture, and compaction. Non-tactile and visible indicators, notably soil chemical composition and presence of soil microorganisms, was rarely used. The listed indicators were congruent with scientific reports, although some knowledge gaps, particularly on the use of indicator plants, were identified. The use of indicator plants as determinants of healthy or non-healthy soils appeared to be influenced by the ease of control of weeds, its utilitarian benefits, benefits to the soil, and threats on cultivated crops. Famers were well informed about the decreasing crop yield. Fertilization practices and limitations in soil management practices with proposed capacity building approaches aimed at enhancing productive capacities of cultivated farmlands are discussed.

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Section: Farmers' Perception and Indigenous Indicators Of Soil Healthmentioning

confidence: 99%

Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana

et al. 2018

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“…It is currently controlled by applying herbicides such as Axiom ® (flufenacet + metribuzin), Dual Magnum ® Canopy SP ® (metribuzin +chlorimuron) during pre-emergence, while herbicides such as Basagran ® , Classic ® (acetochlor) and Pursuit ® (Imazethapyr) are used during post-emergence. But, it has been reported that applying herbicides with soil residual activity is crucial for the management of C. benghalensis (Webster et al ., 2006; Issac et al ., 2013).…”

Section: Introductionmentioning

confidence: 99%

Biology and life history ofLema praeusta(Fab.) (Coleoptera: Chrysomelidae), a biocontrol agent of two Commelinaceae weeds,Commelina benghalensisandMurdannia nudiflora

Das

Koner

Barik

2018

Bull. Entomol. Res.

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We examined previous reports of Lema praeusta (Fab.) (Coleoptera: Chrysomelidae) as a minor pest of turmeric, eggplant, bottle gourd and pumpkin leaves, but no feeding damage by larvae and adults of L. praeusta were recorded by us on these leaves. We observed feeding by the larvae and adults of L. praeusta on ten species of Commelinaceae plants in no-choice tests. The biology, fecundity and life table parameters of L. praeusta on two Commelinaceae weeds, Commelina benghalensis L. and Murdannia nudiflora (L.) Brenan were determined under laboratory conditions (27 ± 1°C, 65 ± 5% RH and 12L:12D). Total larval development times of L. praeusta were 6.36 ± 0.07 and 7.28 ± 0.11 days (mean ± SE) on C. benghalensis and M. nudiflora, respectively. Adult females lived 106.25 ± 1.17 and 77.65 ± 0.91 days (mean ± SE) on C. benghalensis and M. nudiflora, respectively. Each female laid 272.95 ± 2.39 and 224 ± 1.74 eggs (mean ± SE) during a lifetime on C. benghalensis and M. nudiflora, respectively. The net reproductive rate (Ro), intrinsic rate of increase (rm), generation time (Tc), doubling time (DT) and finite rate of increase (λ) were 136.48, 0.14, 36.17, 5.10 and 1.41 on C. benghalensis, respectively, whereas Ro, rm, Tc, DT and λ were 112, 0.20, 23.64, 3.47 and 1.51 on M. nudiflora, respectively, suggesting that L. praeusta could be a potential biocontrol agent against C. benghalensis and M. nudiflora in the fields of rice, maize, sorghum, soybean, mung bean, peanut and cotton.

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“…e invasive plant has a native range starting from Cameroon to Ethiopia and Botswana, Arabian Peninsula, and its synonym is Cyanotis foecunda (http:// plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names: 172477-1). According to the report by Isaac et al [6], among the Commelina weeds, C. benghalensis, C. diffusa, and C. communis are the most troublesome weeds in the new world, Asia and tropical Africa. But now, C. foecunda is becoming the most noxious weed in north Ethiopia.…”

Section: Introductionmentioning

confidence: 99%

Assessment of an Invasive Weed “Maimaio” Commelina foecunda in the Sesame Fields of Western Zone of Tigray, Northern Ethiopia

Zenawi

Goitom

Fiseha

2018

International Journal of Agronomy

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Sesame (Sesamum indicum L.) is probably the most ancient oilseed. It has multiple uses; it is used as a source of food and in the pharmaceutical and cosmetics industries. The average yield of sesame in western Tigray is too low (about 400 kg/ha to 500 kg/ha) due to different factors, and weed infestation takes a lion’s share. More than 80 weed species were recorded and identified as weed pests for sesame in western Tigray. “Maimaio” Commelina foecunda is the most troublesome weed of sesame. The purpose of this study was to assess the distribution of C. foecunda and quantify its infestations. The survey was conducted in 24 sesame growing areas and 48 sesame farms from the three districts of western Tigray in the 2017 production season. The survey result showed that about 91.7% of the assessed sesame farms in western Tigray were found infested with C. foecunda. The weed frequently appeared in Kafta Humera. And, it occurred abundantly and closely in Kafta Humera, whereas it occurred poorly and irresolutely in Tsegede. Concentrated frequency, abundance, and density of the weed were recorded by large-scale sesame producers, lower growing altitudes, and early growth stage of sesame; whereas, it was limited in the small-scale farms, higher growing altitudes, and late growth stage of sesame.

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Managing Commelina Species: Prospects and Limitations

Cited by 17 publications

References 27 publications

Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana

Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana

Biology and life history ofLema praeusta(Fab.) (Coleoptera: Chrysomelidae), a biocontrol agent of two Commelinaceae weeds,Commelina benghalensisandMurdannia nudiflora

Assessment of an Invasive Weed “Maimaio” Commelina foecunda in the Sesame Fields of Western Zone of Tigray, Northern Ethiopia

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