Herbicides, Theory and Applications by Sonia Soloneski, Marcelo L. Larramendy (Eds)

By Sonia Soloneski, Marcelo L. Larramendy (Eds)

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The delayed seeding of cover crops has been an effective means of minimizing yield losses in many crops including broccoli (Brainard & Bellinder 2004). Furthermore, Brainard et al. (2004) found that hairy vetch seeded at 20 days after transplanting cabbage might provide an alternative for weed control in this crop since it: 1) provides significant biomass for soil improvement; 2) does not reduce cabbage yields; and 3) provides some weed suppression. Living mulches are more difficult to manage than conventional cropping systems and are not suitable in all situations.

A cover crop is any living ground cover that is planted into or after the primary crop and is commonly killed before the next crop is planted. The primary benefit of cover crops is reduction of water runoff and soil erosion, which ultimately results in improved soil productivity. Griffith et al. (1986) indicated that the use of cover crop residues for NT planting protects the soil surface from erosion by absorbing the impact of raindrops, thus reducing soil particle detachment and decreasing the acceleration of runoff; additionally, increased water infiltration and reduced soil water evaporation under NT generally increases plant-available water and subsequent crop yield potential.

1997). Although there are many PRE or pre-transplant herbicides available for use in NT broccoli and cabbage, the lack of POST herbicides for broadleaf weed control still remains a major hindrance to the adoption of NT practices, since the lack of late-season broadleaf weed control will affect both yield and harvest efficiency. 1 Cucumber Similar to many other vegetable crops, cucumbers are generally managed with CT practices, such as plowing and repeated cultivations (Lonsbary et al. 2004). Weston (1990) found that cucumber, similar to most other cucurbits, was easy to establish in NT culture.

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