The influence of several fertilizer elements on the occurrence
of underdeveloped seeds in monogerm sugar beets (Beta vulgaris L.)
was studied. Lime (CaCO₃), nitrogen, phosphorus and potassium
fertilizer applications were made to sugar beet seed plots at two
locations in the Willamette Valley, Oregon. Seed produced from each
treatment was...
Experiments at the North Willamette Experiment Station have evaluated response of vegetables to lime and other fertilizers since 1970. The soils are moderately acid (pH 5.4 to 5.6), high in P, and better drained than most soils used for vegetable crop production in western Oregon. Typical soil acidity problems such...
Previous studies indicated that fertigating with nitrogen (N) was more effective than using granular N fertilizers in production of northern highbush blueberry (Vaccinium corymbosum L.). To build on these findings, four studies were conducted in western Oregon to determine whether fertigation was also an effective method for applying other nutrients,...
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...
This paper records a series of experiments conducted furing a one-year period to determine the effects of boron upon the growth and fruiting of Marshall and Corvallis strawberries, two of the leading commercial varieties in Oregon. The problem was approached in four ways: (1) applications of dry borax and borax...
Three distinct stages of flower cluster abscission were identified
prior to fertilization: flowers which did not begin development (stage
1), flowers which had begun development (stage II) and clusters which
had begun to form distinct nuts (stage III). Abscission of stages I
and II coincided with a rapid increase in...
Boron sprays produced fruit set increases in 'Barcelona'
hazelnut orchards in 1984 and in 1985. The absolute fruit set was
correlated with leaf B content but not with nut B. With relative
fruit set (RFS), B content of nuts in May (r = 0.63**) was more
strongly related to set...
An investigation of the effects of soil and foliar applications
of boron and of time of foliar application of boron on
growth, yield, and boron content of bush snap beans was made
during the 1962 growing season. This study was conducted at two
locations: Corvallis and Aurora, Oregon.
Yield, dry...
Several crops grown in the Willamette valley of western Oregon
respond to applications of boron fertilizers. The acid, highly-leached
soils of this area are naturally low in plant-available B. Application
of B to the soil annually or at less frequent intervals is currently
recommended, but the fate of applied B...