Brussels sprouts ( Brassica oleracea var. gemmifera ) are grown for the enlarged axillary buds that form along the main stem or stalk. In the northeastern United States, plants are typically seeded in April or May and harvested from September to
( Lactuca sativa L. var. longifolia ) and crisp lettuce ( Lactuca sativa L. var. crispa ). Brussels sprout is not commonly grown, but there is an increasing interest in its production as a result of its high nutritional value. Boron plays an important
reduce irrigation requirements and improve WUE. The use of LT can be beneficial to extend the harvest season of brussels sprouts ( Brassica oleracea L. Group Gemmifera). Brussels sprout is a cool season, frost-tolerant vegetable crop from the family
Abstract
In field experiments using brussels sprouts (Brassica oleracea L., Gemmifera Group), cabbage (Brassica oleracea L., Capitata Group), cauliflower (Brassica oleracea L., Botrytis Group), and celery (Apium graveolens var. dulce L.), the application of nitrapyrin with ammonium sulfate fertilizer at planting produced higher yields than ammonium sulfate alone, at planting, or in split applications. Tissue levels of NO3-N of cabbage, cauliflower, and celery were usually significantly higher in nitrapyrin-treated plots than in those receiving comparable rates of Ν without nitrapyrin. Tissue levels of NO3-N in brussels sprouts did not increase significantly as Ν rate and yields increased.
Mature leaves of kale (Brassica oleracea L., Alboglabra group) and collard (Brassica oleracea L., Acephala group), and Brussels sprouts (Brassica oleracea L., Gemmifera group) were heated by moist air at 40, 45, 50, or 55 °C for durations of 0, 30, 60, or 90 minutes. Heating of kale at 45 °C for 30 minutes was effective in maintaining better postharvest quality, delaying yellowing, and reducing losses of sugars and organic acids during subsequent storage at 15 °C. Exposure of collard at 40 °C for 60 minutes also delayed yellowing and maintained turgidity of the leaves. Other treatments were either less beneficial, not effective, or caused injury. Heat injury occurred when temperature and duration exceeded the tolerance levels. In some cases, heat-injured tissues remained green but developed fungal infection. Heat treatments had no measurable effects on the rate of senescence or storage quality of Brussels sprouts.
Mature leaves of kale (Brassica oleracea L., Alboglabra group) and collard (Brassica oleracea L., Acephala group), and Brussels sprouts (Brassica oleracea L., Gemmifera group) were heated by moist air at 40, 45, 50, or 55 °C for durations of 0, 30, 60, or 90 minutes. Heating of kale at 45 °C for 30 minutes was effective in maintaining better postharvest quality, delaying yellowing, and reducing losses of sugars and organic acids during subsequent storage at 15 °C. Exposure of collard at 40 °C for 60 minutes also delayed yellowing and maintained turgidity of the leaves. Other treatments were either less beneficial, not effective, or caused injury. Heat injury occurred when temperature and duration exceeded the tolerance levels. In some cases, heat-injured tissues remained green but developed fungal infection. Heat treatments had no measurable effects on the rate of senescence or storage quality of Brussels sprouts.
Abstract
Cauliflower (Brassica oleracea var. botrytis L. ‘Imperial 10-6’), broccoli (Brassica oleracea var. italica Plenck ‘El Centro’), and brussels sprouts (Brassica oleracea var. gemmifera Zenk. ‘Jade Cross’) were grown at 0, 84, 336, and 1344 kg of concentrated superphosphate (CSP) (0, 17.5, 70, and 280 kg P) and 0, 67, 268, and 1072 kg of potassium chloride (KC1) (0, 35, 140, 560 kg K) fertilizers per hectare, per application in a long-term plant nutrition experiment. Increasing the rate of CSP increased the concentrations of P, Ca and Mg but decreased K and Zn in leaf blades at midseason. Increasing the rate of KC1 increased the concentrations of K and Zn but decreased Ca and Mg in leaf blades. Increasing the rates of CSP and KC1 hastened maturity and increased yields of cauliflower and broccoli in harvest sequences, whereas brussels sprouts were less responsive to CSP or KC1 at one harvest. High rates of CSP without KC1 reduced the yield of cauliflower compared to the lower rates. Increasing the rate of KC1 increased the incidence of hollow stem, a quality defect, in cauliflower and broccoli. Best production of uniform maturity and yield was obtained with a combination of the CSP at 336 kg·ha−1 and KC1 at 268 to 1072 kg·ha−1 per application in a long-term rotation.
Abstract
Correlation coefficients based on relative concentrations of 13 glucosinolates in the edible parts of 30 cultivars were determined. Brussels sprouts (Brassica oleracea L. gemmifera group), cauliflower (B. oleracea L. botrytis group), and either marrow-stem or smooth-leafed kale (B. oleracea L. acephala group) had similar glucosinolate patterns based on significant correlations (P < 0.01). The glucosinolates of ‘Morris Heading’ collards [(B. oleracea L. acephala group (var. sabellica)] were highly correlated with those of curly kale [B. oleracea L. acephala group (var. selensia)]. Mustard greens [B. juncea (L.) Czern. & Coss. var. rugosa Bailey] and the corresponding seeds were the most highly correlated of the 17 cultivars for which the edible parts and seeds were compared. Seed analyses indicated relationships among the cultivars somewhat similar to those seen for the edible portions.
Abstract
‘Jade Cross’ Brussels sprouts plants treated once with a foliar spray of 3000-4500 ppm succinic acid-2,2-dimethylhydrazide (SADH) when the first 5-6 sprouts were 1.9 cm in diam were shorter, more uniform, and had yields equal to untreated plants. Treated plants, were about the same ht and yielded as well as plants where the terminal bud was removed (topped) by hand. Earlier maturity was obtained by treating plants with SADH at an earlier stage, but yields per plant were reduced. These sprouts, however, had higher levels of Ca and, generally, higher levels of Mn. Plants treated with 4500 ppm SADH, early or late, had medium size sprouts that were firmer than sprouts of the same size from untreated or topped plants.
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.