Yield reductions due to competition of weeds with crop plants
can be extremely important. Early weed competition can be as important
in reducing crop yield as weed competition for the entire
season.
The objectives of this study were (1) to determine the weed
control achieved by narrow row-cropping patterns, (2)...
The effects of modifying air temperature, soil temperature,
and soil moisture levels on flowering, fruiting, and chemical composition
of Tendercrop snap beans were studied in experiments in
the field and in the greenhouse during 1961, 1962, and 1963.
High maximum temperatures of 95-105° F. during bloom reduced
the percent 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...
In previous years, at Corvallis, yields of bush snap beans
varied among planting dates. In order to obtain additional information
on the effect of planting dates on the growth, development and
yield of snap beans, four field plantings and two greenhouse plantings
of the variety O.S.U. 2051 were made.
Results...
Petroleum mulch applied on the soil surface over a row of
planted seeds promotes a more rapid and a more uniform germination
of seeds, enhances elongation of seedlings and in some cases increases
the yield of the crop. The beneficial effects of petroleum
mulch have usually been attributed to increased...
The responses of 'Oregon 1604' snap beans (Phaseolus vulgaris
L.), 'Early Thorogreen' lima beans (Phaseolus lunatus L.), and
'Takii's Extra Early' soybeans (Glycine max L.) to two methods of
inoculation with rhizobium (seedcoating and furrow treatments) and
rates of nitrogen fertilizer were studied in field experiments.
Nitrogen rates ranged from...