California Agriculture, October 1958

Volume 12, Number 10
Heavy duty drill for seed placement on ranges

research articles

Mechanical fruit tree shaking: Effect of frequency and stroke on fruit removal and power requirements analyzed in study of reciprocating type shaker
by P. A. Adrian , R. B. Fridley
pp3-15, doi#10.3733/ca.v012n10p3
Abstract
Abstract Not Available – First paragraph follows: Boom type shakers—used for the mechanical removal of fruit from trees—may cause less strain on the roots and consequently less damage than the cable type shakers according to observations made in an extensive analysis of the basic engineering principles involved in tree shaking.
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Rooting pear, plum rootstocks: Growth-regulator treatments and a warm preplanting storage period promoted rooting of fall-collected hardwood cuttings
by Hudson T. Hartmann , Carl J. Hansen
pp4-14, doi#10.3733/ca.v012n10p4
Abstract
Abstract Not Available – First paragraph follows: Taking hardwood cuttings in the fall—while the buds were in the rest period—treating them with indolebutyric acid, followed by immediate planting or holding at 60°F-65°F for several weeks before planting gave good rooting of several difficult-to-root tree fruit rootstocks.
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Drill seeding of forage ranges: Heavy duty drill permits good placement of desirable grass and legume seeds for establishment of pasture on range land
by J. E. Street , B. L. Kay , C. F. Walker
pp5-6, doi#10.3733/ca.v012n10p5
Abstract
Abstract Not Available – First paragraph follows: Tremendous increases in quantity and quality of forage production on many acres of California's rangeland could be achieved by establishing and growing selected varieties of grasses and legumes.
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Weeds controlled with cyanamid: New method for treating winter leafy vegetable crops with calcium cyanamid controlled weeds at moderate cost in tests
by Garland E. May , William A. Harvey
pp7-15, doi#10.3733/ca.v012n10p7
Abstract
Abstract Not Available – First paragraph follows: Control of annual weeds—79% in 1957 and 81% in 1956—was achieved in winter crops of spinach and mustard greens by a new method of incorporating calcium cyanamid into the soil.
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New selective herbicide tested: CDEC applied in pre-emergence treatment of seeded lettuce shows promise for selective weed control without crop injury
by C. D. McCarty , D. C. Purnell , M. J. Garber
pp8-15, doi#10.3733/ca.v012n10p8
Abstract
Abstract Not Available – First paragraph follows: Precision cultivation and hand hoeing—the methods now used for weed control in lettuce production—become difficult where weed growth is thick and rapid. The lettuce may be overgrown to the point where cultivation is difficult and the lettuce suffers heavily from weed competition.
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Nitrification of fertilizers: Ammoniacal fertilizers used in study on the rate nitrifying bacteria function at various ammonia concentrations in soils
by F. E. Broadbent , K. B. Tyler , G. N. Hill
pp9-14, doi#10.3733/ca.v012n10p9
Abstract
Abstract Not Available – First paragraph follows: Results of experiments with three ammonium fertilizers—aqua ammonia, ammonium sulfate, and ammonium nitrate—have shown that not only the rate of nitrification but also the elapsed time required before the maximum rate is attained depends on the ammonia level in the soil.
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Deficiencies of micronutrients: Influence of phosphate fertilizers on micronutrients in avocado leaves subject of long-term study of Fuerte orchard
by C. K. Labanauskas , T. W. Embleton , W. W. Jones
pp10-16, doi#10.3733/ca.v012n10p10
Abstract
Abstract Not Available – First paragraph follows: Because the deficiency of micronutrients in avocado trees is often a problem in southern California orchards a fertilizer experiment was started to evaluate treble superphosphate—among other phosphatic fertilizers—as a source for the micronutrient content of the leaves.
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Septoria leaf scorch of azalea: Disease especially severe in cloudy, damp weather controlled by spray treatment in tests on experimental plot in Eureka
by Robert D. Raabe , John V. Lenz
pp11, doi#10.3733/ca.v012n10p11
Abstract
Abstract Not Available – First paragraph follows: The fungus—Septoria azaleae—attacks only the leaves of azaleas and causes a disease that appears as irregular, angular, brown lesions.
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Lemon fruit quality studied: Comparative tests made of several new strains frequently used to avoid some diseases prevalent in old line Eurekas
by G. E. Goodall , W. P. Bitters
pp12, doi#10.3733/ca.v012n10p12
Abstract
Abstract Not Available – First paragraph follows: To avoid the lemon tree diseases of Dry Bark and Lemon Tree Collapse—so prevalent in the old line Eureka strains—new strains have come into use in Santa Barbara County within the past 10 years.
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Four new asparagus varieties: Now in third season of trial in experimental and commercial plantings, new varieties show promise but more testing needed
by G. C. Hanna
pp13, doi#10.3733/ca.v012n10p13
Abstract
Abstract Not Available – First paragraph follows: Although not officially released—and won't be for several years—four new asparagus varieties now occupy between eight and ten thousand acres for further testing.
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