Boron deficiency or toxicity can reduce yield and
quality of vegetables. Seven vegetable crops, varying from
low to high boron requirements were grown in field plots at
Corvallis in 1987. Leaf-B and yield components of green
bean, cucumber, potato, carrot, tomato, broccoli and table
beet were examined under conditions of fall or spring soil
applied B at a 5 kg/ha rate on two soil types. Soil tests
on control plots indicated B levels of .39 mg/kg and .20
mg/kg in the top 23 cm of soil in the silty clay loam and
sandy loam soil, respectively. Fall or spring application
of B increased soil B levels in the top 23 cm on the silty
clay loam soil to .68 mg/kg and .37 mg/kg, and on the sandy
loam soil to .81 mg/kg and .42 mg/kg, respectively.
Boron application had no effect on yield or yield
components except in green beans where spring applied B on
the sandy loam reduced percent of premium grade pods (sieve
sizes 1-4). Leaf-B levels were not affected in cucumber,
carrot, or tomato on either soil. Boron application on
both soils had a significant effect on leaf-B levels in
bean, broccoli and table beet. Potato leaf-B was
significantly affected only on the sandy loam soil. / Graduation date: 1993
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/25752 |
| Date | 12 March 1993 |
| Creators | Oneida, Kelly Ann |
| Contributors | Mack, Harry J. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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