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Abstract
A commercially available seaweed concentrate (Kelpak 66) was applied to nutrient-stressed plants of cucumber (Cucumis sativa L. cv. Pepinova) as a root dip at transplant or as a weekly foliar spray. Overall plant dry mass was increased by the seaweed treatment. Those plants receiving higher levels of seaweed treatment showed greatly increased root growth.
Abstract
Mechanical pollination trials using air blasts and vibration to distribute pollen were conducted on the highbush blueberry, Vaccinium corymbosum cvs. ‘Jersey’ and ‘Rubel’. Neither treatment nor a simultaneous combination of the two gave commercial fruit set for either cultivar. Mechanical trials on the ‘Rubel’ cultivar indicated almost total failure to effect pollination. Production from ‘Jersey’ cultivar mechanical pollination trials was more promising. However, low seed numbers indicated that the increased production of this cultivar might be due to its tendency to set fruit parthenocarpically.
Abstract
The relationship between soluble solids and moisture in sweet corn (Zea mays L.) was not significantly influenced by cultivars or cultural practices. Soluble solids could be used to predict moisture values (y:98.82 – 0.95X, Sy·x = 1.09 within ±1%). Data from soluble solids and microwave oven methods were collected in 3 minutes or less and were com parable with data from the vacuum oven method.
Abstract
Early introduction of honey bees into caged ‘Jersey’ blueberries was associated with increased yields and fruit size and suggests that hives be introduced in plantations for pollination not later than 25% of full bloom.
Abstract
Type of storage influenced yield and quality of applesauce. The yield of applesauce from controlled atmosphere (CA) storage was significantly less than from cold stored apples. Applesauce color was superior when the sauce was made from CA stored apples. Increased cooking time reduced total sauce yield but had no effect on yield at the pulper-finisher or on the color of the sauce. The addition of acid to the applesauce improved color. Acid addition had a stronger influence on the applesauce color of cold stored apples than of CA fruit. The addition of extra water beyond 30% by weight reduced quality regardless of storage type, cook time or addition of acid.
Abstract
In the paper “Effect of Plant Population and Planting Date on Root and Starch Production of Buffalo Gourd Grown as an Annual” by J.M. Nelson, J.C. Scheerens, J.W. Berry, and W.P. Bemis [J. Amer. Soc. Hort. Sci 108(2): 198–201, 1983), 2 incorrect quadratic equations are given. In Fig. 3 and on page 199, column 2, line 11, the equation Y = 676 + 0.8X - 0.000072X2 should be Y = 6.8 x 103 + (8.0 x 10-2)X - (7.2 x 10-8)X2. In Fig. 4, the equation Y = 462 + 1.27X - 0.000145X2 should be Y - 4.6 x 102 + (1.3 x 10-2)X - (1.5 x 10-8)X2.
Abstract
The buffalo gourd (Cucurbita foetidissima HBK) produced root yields as high as 34,550 kg/ha with a root starch content of 63.5% on a dry weight basis at a 920-m elevation site. A quadratic relation between root yield and plant population showed maximum yield at 550,000 plants/ha. No clear relation was observed between root starch content and plant population. An April planting resulted in higher root and starch yields than a July planting, at a 370-m elevation site. Vine growth appeared to be restricted when maximum air temperatures were above 40°C.
Abstract
Unpeeled and peeled ‘Rival’ and ‘Tilton’ apricots (Prunus armeniaca L.) were canned at 2 levels of vacuum and headspace. Differences in the canned product were significant between cultivar, peeling treatment and vacuum in the drained weights, dissolved Sn content of the syrup, corrosion of the cans and clearness of the syrup. ‘Rival’ apricots had less drained weight loss, reduced amounts of Sn, less visual corrosion, and a clearer syrup than ‘Tilton’ apricots. Peeling the apricots increased drained weight loss and Sn content, and reduced the clearness of the syrup. Low vacuum increased Sn content, visual corrosion and clearness of the syrup, and reduced drained weight loss.
Abstract
Butanedioic acid mono-(2,2-dimethylhydrazide) (daminozide) increased the red color and anthocyanin content of fresh and processed sweet cherries (Prunus avium L.). Daminozide had no effect on the USDA color grade for processed dark sweet cherries but reduced the USDA character of processed dark sweet cherries and increased drained weight losses regardless of cultivar. The use of daminozide on light sweet cherries resulted in reduced USDA color grade for the processed product. A 2-week delay in harvest also increased red color and anthocyanin content of sweet cherries, and increased the USDA color grade of the processed ‘Bing’, ‘Chinook’, and ‘Rainier’ cherries. In addition, it reduced the USDA character grade of processed ‘Chinook’ but not of ‘Bing’ and ‘Rainier’ sweet cherries.
Abstract
Ammonia volatilization from urea-N applied to Kentucky bluegrass ( Poa pratensis L. ‘Bensun’) was investigated using a chamber trapping procedure. Urea was spray-applied in a 0.2 cm depth at N of 5 g·m−2 with and without additional irrigation of 0.5, 1, 2, or 4 cm. Losses up to 36% of the applied N occurred when urea was applied without irrigation. Supplemental irrigation of as little as 1.0 cm reduced the loss to 3-8%, while a 4.0-cm irrigation further reduced losses to about 1%. Of the ammonia volatilized, most was lost in the first 24 hr. Maximum N loss was associated with the thatch layer, a zone having high urease activity.