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Creator:: Thomasson, James E.
Abstract:: The effects of five tillage treatments on soil bulk density and mechanical impedance were examined on Newburg sandy loam soil in the Willamette Valley, Oregon, in 1987. Subsequent effects on seedling emergence and yield of carrots (Daucus carota L., cvs. Orlando Gold and Royal Chantenay) were also measured. Mechanical impedance...
Resource Type:: Masters Thesis
Full Text:: correlation with soil mechanical impedance at 5 cm. EFFECTS OF TILLAGE-INDUCED SOIL COMPACTION ON CARROT

Creator:: Burkwhat, Henry Edwin
Resource Type:: Dissertation
Full Text:: treatment for three depths EFFECTS OF DIFFERENTIAL IRRIGATION AND TILLAGE-INDUCED SOIL COMPACTION ON

Creator:: Oneida, Kelly Ann
Abstract:: 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...
Resource Type:: Masters Thesis
Full Text:: significantly affected only on the sandy loam soil. Effect of Boron on Seven Vegetable Crops Grown on Two

Creator:: Bratsch, Anthony D.
Abstract:: Field experiments were conducted with cauliflower (Brassica oleracea var. botrytis cv. Snowball Y ) to determine crop development, yield, quality and maturity response to various seasonal water levels, and to specific water stress timing in relation to curd initiation. The effects of nitrogen rate, timing, and source and the application...
Resource Type:: Dissertation
Full Text:: environment 57 plant density 58 CHAPTERS EFFECT OF NITROGEN RATES AND TIMING ON DIFFERENTIALLY

Creator:: Grealish, William J.
Abstract:: Five boron rates and seven water levels were applied to bush green beans (Phaseolus vulqaris cv Oregon 91G) and to cauliflower (Brassica olereacea var. botrytis, cultivar "Snowball Y") in 1989 and 1990 to evaluate their effects on total yield of both crops and on outer quality, head hollowness and internal...
Resource Type:: Masters Thesis
Full Text:: ). Parker and Gardner (1982) reported that no effect of soil pH on B mobility over a range of 5.4-7.5 was

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