Chemical weed killers or natural treatments like corn gluten can suppress weed growth.

化学除草剂或者自然处理方法，比如玉米麸质可以抑制杂草生长。

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Chemical weed killers or natural treatments like corn gluten can suppress weed growth. Dense planting of a crop can also act as a natural control.

化学除草剂或类似玉米麸等自然手段可以抑制杂草的生长。作物密集种植也能作为一种自然控制手段。

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Viticulture: Tradional agriculture, without the adding of chemical products, or weed killers. Ocasional use of sulphur and every 3-4 years organic fertilizer.

种植方式：利用传统的农业种植法，没有使用化学药剂以及除草器，偶尔使用硫磺和有机肥料。

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Two of the plants growing in the wild showed resistance to both kinds of weed killers.

VOA: special.2010.09.14

Chemical weed killers or natural treatments like corn gluten can suppress weed growth.

VOA: special.2010.08.10

remove DDT the next will be all insecticides, after that it will be all the weed-killers and the fungicides and then the fertilizers, if the hysteria prevails.

VOA: special.2009.11.10

Almost all of that came from dirt, fertilizer, bug spray and weed killers sold under brand names Scotts, Miracle-Gro, Ortho--brands it owns--and Roundup, marketed through an agreement with Monsanto.

FORBES: Magazine Article

Almost all of that came from dirt, fertilizer, bug spray and weed killers sold under brand names Scotts, Miracle-Gro, Ortho--brands it owns--and Roundup, marketed through an agreement with Monsanto (nyse: MON - news - people ).

FORBES: Organic Miracle Needed