Mineral Content of Tomato (Lycopersicon esculentum) and Four Competing Weed Species

Tomatoes (Lycopersicon esculentum ‘Roma VF’) and weeds were seeded at two locations in 1973 and 1974. In separate plots, jimsonweed (Datura stramonium L.), tall morningglory [Ipomoea purpurea (L.) Roth.], and common cocklebur (Xanthium pensylvanicum Wallr.) seedlings were thinned to densities rangin...

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Bibliographic Details
Published in:Weed science 1981-09, Vol.29 (5), p.590-593
Main Authors: Sanders, Douglas C., Grayson, Allen S., Monaco, Thomas J.
Format: Article
Language:English
Subjects:
Corn
Leaves
Minerals
Nutrient utilization
Orchard soils
Plant nutrition
Plants
Soil nutrients
Tomatoes
Weeds
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Summary:Tomatoes (Lycopersicon esculentum ‘Roma VF’) and weeds were seeded at two locations in 1973 and 1974. In separate plots, jimsonweed (Datura stramonium L.), tall morningglory [Ipomoea purpurea (L.) Roth.], and common cocklebur (Xanthium pensylvanicum Wallr.) seedlings were thinned to densities ranging from 2.7 to 86 plants/m2. Densities of large crabgrass [Digitaria sanguinalis (L.) Scop.] ranged from 11 to 430 plants/m2. There were a few instances of difference in nutrient concentrations in tomato and weed leaf tissue, but no clear relationship was evident between concentration of N, P, K, Ca, Mg, and S and weed density. Considerably more fruit weight was produced per kilogram of total assimilated N, P, and K in the weed-free than in the weed-infested tomato plots.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500063785