| Subject | English | Spanish |
| bot. | Angola weed | orcella Roccella tinctoria |
| bot. | Angola weed | orchilla de mar Roccella tinctoria |
| nat.sc., agric. | annual weeds | malas hierbas anuales |
| nat.sc. | aquatic weed | mala hierba acuática |
| nat.sc., agric. | biennial weeds | malas hierbas bianuales |
| environ., agric. | biological weed control | lucha biológica contra las malas hierbas |
| agric., chem. | chemical weed control | bina química |
| agric. | chemical weed control | control químico de malezas |
| agric., chem. | chemical weed control | escarda química |
| agric., chem. | chemical weed control | deshierbo con productos químicos |
| agric. | chemical weed control | desmalezado químico |
| agric., chem. | chemical weed control | aplicación de herbicidas |
| bot. | clod-weed | viuda silvestre Knautia arvensis |
| bot. | clod-weed | escabiosa silvestre Knautia arvensis |
| agric. | damage caused by weeds | daño causado por malas hierbas |
| life.sc., nat.res., agric. | dill weed | eneldo (Anethum graveolens) |
| agric. | directed weed eradication | desherbado localizado |
| agric. | directed weed eradication | escarda localizada |
| agric. | directed weed eradication | desherbado dirigido |
| nat.sc., agric. | ditchbank weeds | malas hierbas de margen |
| nat.res. | dyer's-weed | gualda (Reseda luteola) |
| nat.res. | dyer's-weed | gabarro (Reseda luteola) |
| life.sc., agric. | dyer's weed | gualda (Reseda luteola) |
| bot. | dyer's weed | gabarro Reseda luteola |
| bot. | dyer's weed | gualda Reseda luteola |
| nat.sc. | emergent weeds | malas hierbas acuáticas emergentes |
| nat.sc. | emersed weeds | malas hierbas acuáticas emergentes |
| bot. | emetic weed | tabaco indio Lobelia inflata |
| bot. | emetic weed | lobelia Lobelia inflata |
| agric. | European Weed Research Council | Comité Europeo de Investigaciones sobre Malas Hierbas |
| org.name. | Expert Consultation on Weed Ecology and Management | Consulta de expertos sobre ecología y manejo de malezas |
| org.name. | Expert Consultation on Weed Management in the Near East | Consulta de expertos sobre mejores sistemas de manejo de malas hierbas en el Cercano Oriente |
| bot. | finger weed | dedo de guante Utriculidium durvillaei |
| agric. | flame weeding | tratamiento con fuego |
| agric. | flame weeding | quema de malas hierbas |
| nat.sc. | floating weeds | malas hierbas flotantes |
| agric. | forest weed | maleza de los montes |
| nat.res. | grass weed | hierba marina (Zostera marina) |
| agric. | grass weed | mala hierba |
| entomol. | hair weed | cúscuta Cuscuta (spp.) |
| nat.res. | hairy green-weed | hiniesta vellosa (Genista pilosa) |
| agric. | herbicide resistant weed | malas hierbas resistentes a los herbicidas |
| agric., chem. | hormone weed killer | herbicida hormónico |
| agric., chem. | hormone weed killer | herbicida hormonal |
| agric., chem. | hormone weed killer | fitohormona |
| agric. | infested with weeds | invadido por las malas hierbas |
| agric. | infested with weeds | enyuyado |
| agric. | infested with weeds | enmalezado |
| agric. | injurious effect of weeds | daño causado por las malas hierbas |
| agric. | injurious effects of weeds | daño causado por malas hierbas |
| agric. | integrated weed management | manejo integrado contra las malas hierbas |
| agric. | inter-row weed control treatment | escarda de las calles |
| agric. | inter-row weed control treatment | escarda interlínea |
| agric. | inter-row weed control treatment | desherbado interlínea |
| agric. | inter-row weed control treatment | desherbado de las calles |
| agric. | in-the-row weed control treatment | escarda sobre la línea |
| agric. | in-the-row weed control treatment | desherbado sobre la línea |
| bot. | Jimson weed | higuera loca Datura stramonium |
| agric. | jimson weed | manzana espinosa (Datura stramonium) |
| agric. | jimson weed | higuera loca (Datura stramonium) |
| agric. | jimson weed | estramonio (Datura stramonium) |
| agric. | jimson weed | datura (Datura stramonium) |
| bot. | Jimson weed | hierba hedionda Datura stramonium |
| bot. | Jimson weed | estramonio Datura stramonium |
| nat.res., agric. | kew weed | galinsoga de flor pequeña (Galinsoga parviflora) |
| agric. | late weed development | aparición tardía de malas hierbas |
| nat.sc., agric. | late weed infestation | invasión tardía de malas hierbas |
| nat.sc., agric. | mat weed | espolín (Stipa pennata) |
| agric. | mechanical weed control | lucha mecánica contra malas hierbas |
| agric. | mechanical weed control | lucha mecánica contra las malas hierbas |
| agric., chem. | mulching to suppress weeds | cubierta para la eliminación de las malas hierbas |
| org.name. | Panel of Experts on Improved Weed Management | Cuadro de expertos sobre mejores sistemas de manejo de malas hierbas |
| agric. | perennial weed | malas hierbas radiculares |
| nat.sc., agric. | perennial weeds | malas hierbas perennes |
| agric. | postemergence grass weed control | escarda después de la nascencia |
| agric. | postemergence grass weed control | desherbado después del nacimiento |
| agric. | preemergence grass weed control | escarda antes de la nascencia |
| agric. | preemergence grass weed control | desherbado antes del nacimiento |
| patents. | preparations for killing weeds | productos para la destrucción de malas hierbas |
| patents. | preparations for killing weeds and destroying vermin | productos para la destrucción de malas hierbas y animales dañinos |
| nat.sc., agric. | prickly bur-weed | pegotes (Xanthium spinosum L.) |
| nat.sc., agric. | prickly bur-weed | cadillo (Xanthium spinosum L.) |
| transp., agric. | propelled weed cutter | lancha segadora |
| agric., tech. | rolling weed breaker | desbrozadora rodante |
| nat.sc., agric. | root propagating weeds | malas hierbas propagadas por raíces |
| nat.sc., agric. | root-propagated weed | malezas rizomatosas |
| nat.sc., agric. | root-propagated weed | malas hierbas que se propagan por raíces |
| agric. | root-spreading weed | malas hierbas radiculares |
| nat.res. | sargasso weed | sargazo (Sargassum) |
| bot. | sargasso weed | sargazo Sargassum (spp.) |
| nat.res., agric. | scorpion weed | facelia tanacetifolia (Phacelia tanacetifolia) |
| agric. | secondary weed growth | infestación de malas hierbas en el segundo cultivo |
| nat.sc., agric. | seed-propagated weeds | malas hierbas que se propagan por semilla |
| agric. | selective weed control | escarda selectiva |
| nat.sc., agric. | selective weed control | lucha selectiva contra las malas hierbas |
| agric. | selective weed control | desherbado selectivo |
| agric. | sow-edged weeding hoe | azadilla de diente de sierra |
| agric. | sowing and weed control treatment in one single operation | desherbado durante la siembra |
| entomol. | strangle weed | cúscuta Cuscuta (spp.) |
| health., nat.res. | strangle weed | cuscuta (cuscuta spp.) |
| nat.sc. | submerged weeds | malas hierbas sumergidas |
| nat.sc. | submersed weeds | malas hierbas sumergidas |
| nat.sc., agric. | sweet broom-weed | escobilla dulce (Scoparia dulcis L./Benth.) |
| nat.sc., agric. | thermic weed control | escarda térmica |
| nat.sc., agric. | thermic weed control | deshierbo térmico |
| agric. | thistle weeding | descardado |
| agric. | thistle weeding | arrancamiento de los cardos |
| social.sc. | viper's weed | mandanga |
| social.sc. | viper's weed | rama |
| social.sc. | viper's weed | tila |
| social.sc. | viper's weed | maría |
| social.sc. | viper's weed | hierba |
| social.sc. | viper's weed | grifa |
| social.sc. | viper's weed | gloria |
| agric. | water-weed | hierba acuática |
| agric., construct. | water weed cutter | segadora subacuática |
| agric., construct. | water weed cutter | segadora de hierbas acuáticas |
| agric., construct. | water weed cutter | cortadora subacuática |
| agric., construct. | water weed cutter and launch | cortadora subacuática |
| agric., construct. | water weed cutter and launch | segadora de hierbas acuáticas |
| agric., construct. | water weed cutter and launch | segadora subacuática |
| environ. | water weed cutting | recorte de hierbas acuáticas |
| environ. | water weed cutting Cutting down by scythe or machine at intervals the vegetation growth and grasses on banks and berms of irrigation and drainage channels or cropped areas | recorte de hierbas acuáticas |
| agric., construct. | water weed cutting | siega de hierbas subacuáticas |
| agric., construct. | water weed cutting | guadañado de hierbas acuáticas |
| agric. | weed burning | quemado de las malas hierbas |
| agric. | weed competition | competencia entre malas hierbas |
| gen. | weed contamination | pastura contaminada con |
| environ. | weed control | control de hierba |
| environ. | weed control | eliminación de malas hierbas |
| agric. | weed control | desmalezado |
| agric. | weed control | escarda |
| environ. | weed control Freeing an area of land from weeds by several means, such as herbicides, tillage, burning, mowing, and crop competition | control de hierba |
| agric. | weed control | lucha contra las malas hierbas |
| agric. | weed control | control de malezas |
| agric. | weed control | escardadura |
| agric. | weed control | lucha contra las hierbas perjudiciales |
| agric. | weed control chemical applicator | aplicador de productos químicos |
| agric. | weed control chemical applicator | binadora química |
| agric. | weed control chemical applicator | aplicador de herbicidas |
| agric. | weed control treatment after sowing | desherbado después de la siembra |
| agric. | weed control treatment after sowing | escarda de postsiembra |
| agric. | weed control treatment after sowing | desherbado de postsiembra |
| agric. | weed control treatment before sowing | escarda de presiembra |
| agric. | weed control treatment before sowing | desherbado de presiembra |
| agric. | weed control treatment before sowing | desherbado antes de la siembra |
| fishery | weed-cutting launch | lancha arranca-hierbas |
| fishery | weed-cutting launch | lancha segadora |
| agric., construct. | weed cutting launch | segadora subacuática |
| agric., construct. | weed cutting launch | cortadora subacuática |
| agric., construct. | weed cutting launch | segadora de hierbas acuáticas |
| fishery | weed-cutting launch | barca segadora de vegetales |
| agric. | weed density | densidad de malas hierbas |
| agric. | weed destruction | destrucción des malas hierbas |
| gen. | weed-eater | desmalezador |
| agric. | weed eradication | escarda |
| agric., construct. | weed eradication | extirpación de las malas hierbas |
| agric. | weed eradication | desmalezado |
| agric. | weed eradication | escardadura |
| agric., construct. | weed eradication | escarda total |
| gen. | weed extracts for food | extractos de algas, para uso alimenticio |
| ichtyol. | weed fish | peces indeseables |
| agric. | weed fork | horca escardadora |
| nat.sc., agric. | weed-grown | asilvestrado |
| agric., chem. | weed growth regulator | herbicida a base de hormonas |
| agric. | weed harrow | desherbador |
| agric. | weed harrow | grada para desherbar |
| agric. | weed hoe | azadilla escardadora |
| agric. | weed-hook | escardillo |
| fish.farm. | weed infestation | infestación de plantas acuáticas |
| agric. | weed infestation | invasión de malas hierbas |
| agric. | weed invasion | invasión de malas hierbas |
| chem. | weed killer | herbicida |
| agric. | weed killing | destrucción des malas hierbas |
| gen. | weed killing | destrucción de malas hierbas |
| agric., chem. | weed killing machine | máquina para extirpar la hierba |
| agric., chem. | weed killing machine | máquina para matar el pasto |
| agric., chem. | weed killing machine | máquina para matar la hierba |
| agric., chem. | weed killing machine | máquina para extirpar el pasto |
| agric., chem. | weed killing machine | máquina fumigadora |
| transp., chem. | weed-killing train | grupo quita-hierbas, tren de extirpación de hierbas |
| agric., chem. | weed-killing treatment | tratamiento matayuyos |
| agric., chem. | weed-killing treatment | tratamiento herbicida |
| transp. | weed-killing wagon | vagón para extirpar el pasto |
| transp. | weed-killing wagon | vagón para extirpar la hierba |
| transp. | weed-killing wagon | vagón para matar la hierba |
| transp. | weed-killing wagon | vagón herbicida |
| pest.contr. | weed management | lucha contra las malas hierbas |
| forestr. | weed management | control de malezas |
| nat.sc., agric. | weed mould | moho maligno |
| vet.med. | weed of cows | mamitis mastitis |
| vet.med. | weed of cows | mastitis |
| nat.sc., agric. | weed panaeolus | paneolos (Panaeolus spp.) |
| agric. | weed population | multiplicación de malas hierbas |
| agric. | weed scientist | malherbólogo |
| nat.sc., agric. | weed seeds | semillas de malas hierbas |
| bot. | weed species | especies de malas hierbas |
| agric. | weed sprayer | pulverizador herbicida |
| agric. | weed spudding | arrancar las malas hierbas |
| forestr. | weed tree | árbol de una especie de poco valor |
| agric. | weeding fork | horca escardadora |
| agric. | weeding hoe | azadilla escardadora |
| agric. | weeding knife | cuchillo para escardadura |
| gen. | weeding machines | máquinas para escardar |
| agric. | weeding rod | barra escardadora |
| agric. | weeding tractor | tractor cuidadora |
| gen. | weeds for human or animal consumption | algas para la alimentación humana o animal |
| agric., construct. | weeds screen | rejilla colectora |
| agric., construct. | weeds screen | pantalla contra malas hierbas |