publication . Article . 2009

Sudex cover crops can kill and stunt subsequent tomato, lettuce and broccoli transplants through allelopathy

Charles G. Summers; Jeffrey P. Mitchell; Timothy S. Prather; James J. Stapleton;
Open Access English
  • Published: 01 Jan 2009
  • Publisher: eScholarship, University of California
  • Country: United States
Abstract
Grass cover crops can be harvested for biomass or used as a surface mulch to reduce erosion, improve soil structure, suppress weeds and conserve moisture. There is concern, however, that such plantings may affect subsequent crops. We studied the effects of sudex, a sorghum hybrid used as a cover crop, on subsequent crops of tomato, broccoli and lettuce started from transplants. Within 3 to 5 days of being transplanted into recently killed sudex, all three crops showed symptoms of phytotoxicity including leaf necrosis, stunting and color changes. There was 50% to 75% transplant mortality in all three species. Plant growth and development, as determined by biomass...
Subjects
Medical Subject Headings: food and beveragesfungi
free text keywords: Plant Sciences, Biofuels, Allelopathy, Sudex, Vegetable Transplants, Tomatoes, Broccoli, Lettuce, Agriculture, S, Agriculture (General), S1-972, Agronomy and Crop Science, Plant Science, Forestry, Agroforestry, Crop, Biomass, Green manure, Mulch, Biology, Sorghum, biology.organism_classification, Agronomy, Phytotoxicity, Cover crop
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publication . Article . 2009

Sudex cover crops can kill and stunt subsequent tomato, lettuce and broccoli transplants through allelopathy

Charles G. Summers; Jeffrey P. Mitchell; Timothy S. Prather; James J. Stapleton;