Search Results
Field studies were conducted to determine the effects of row covers (no row cover or Agryl P-17), seeding date, and seeding method (seeding in a furrow or into a smooth soil surface) on the development, harvest date, and yield of brussels sprouts [Brassica oleracea L. (Gemmifera Group)] grown in southwestern British Columbia. The treatments were applied to the plants in the seedbed after which the plants were transplanted in the field and grown to horticultural maturity. In both years, row covers increased soil temperatures and advanced seedling development and transplanting dates compared with uncovered treatments. Leaf weight ratio (LWR) decreased, specific leaf area (SLA) increased, and leaf area ratio (LAR) was unaffected by the application of row covers. Early seeding also promoted early transplanting. In 1987, plots were harvested when plants reached horticultural maturity. There was a linear effect of seeding date on harvest date, early seeding promoted an early harvest, and row covers advanced the sprout harvest of plants seeded earliest (24 Mar). In 1988 all treatments were harvested from 17 to 19 Oct. and marketable yield was improved by early seeding and by row covers. Seeding method did not influence plant growth or yield.
Abstract
In field trials at two locations in British Columbia, dimethyl sulfoxide applied as a 5% foliar spray, increased the yield of ‘Dark Skin’ Perfection’ peas by 11.5 and 25.3%. The foliar application of Cycocel at 50 ppm increased yield by 14.6 and 17.4%. The effects of DMSO and Cycocel were additive, there being no interaction.
Abstract
In 2 greenhouse experiments, 15-day old pea seedlings were sprayed with 1 or 100 ppm of Cycocel, Phosfon or B-Nine. The plants were grown to marketable maturity of peas.
Cycocel at 1 ppm increased plant height, internode length, pea yield and total dry matter, but decreased chlorophyll concentration as well as the ratio of chlorophyll a:b. Cycocel at 100 ppm decreased plant height, internode length and total dry matter, but had no significant effect on pea yield. Phosfon at 1 ppm had little effect on growth and yield, but 100 ppm markedly decreased plant height and pea yield while increasing chlorophyll concentration. B-Nine at both concentrations was relatively ineffective in altering the growth pattern of the pea plant.
Cycocel generally increased the concentrations of N, P and Mg in the pea vine. Phosfon generally increased P and Ca. B-Nine at 1 ppm decreased N and P while it increased both at 100 ppm. All 3 compounds generally decreased K.
Abstract
Soil fumigation with methyl bromide greatly reduced Pythium debaryanum infection on carrots in pot experiments. The yield of carrots in fumigated soil responded to irrigation but did not respond in non-fumigated soil. A soil water stress equivalent to 20% of available water at field capacity produced the poorest yield.