California Agriculture
California Agriculture
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California Agriculture

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California Agriculture, Vol. 19, No.12

New poinsettia, 'Paul Mikkelsen,' may remain attractive from Christmas through the Easter season.
December 1965
Volume 19, Number 12

Research articles

Control of flower initiation in the new durable poinsettia ‘Paul Mikkelsen’
by A. M. Kofranek, W. P. Hackett, R. O. Miller
| Full text HTML  | PDF  
Abstract Not Available – First paragraph follows: a new cultivar of poinsettia will be in plentiful supply for the 1965 holiday season in California market places. This relatively new introduction, named ‘Paul Mikkelsen’ (after the plant breeder), has outstanding keeping qualities. If placed in the north window and properly watered, it may remain attractive beyond the Easter season. This endurance is unequalled in the standard cultivars. The bracts are not as large as the older cultivars, but they have the same vivid red color. Because of its upright stem habit, stake support is not usually required (cover and photo 2).
Abstract Not Available – First paragraph follows: a new cultivar of poinsettia will be in plentiful supply for the 1965 holiday season in California market places. This relatively new introduction, named ‘Paul Mikkelsen’ (after the plant breeder), has outstanding keeping qualities. If placed in the north window and properly watered, it may remain attractive beyond the Easter season. This endurance is unequalled in the standard cultivars. The bracts are not as large as the older cultivars, but they have the same vivid red color. Because of its upright stem habit, stake support is not usually required (cover and photo 2).
Excess Phosphorus and Iron Chlorosis
by P. C. De Kock, A. Wallace
Full text HTML  | PDF  
Slab pruning: Of mature orange trees eases harvesting, reduces yields
by J. E. Pehrson, C. D. McCarty
Full text HTML  | PDF  
A progress review…: The cotton variety improvement program
by John H. Turner
Full text HTML  | PDF  
Extra pounds Extra quality beef…: U. C. heifer selection Program
by R. Helphenstine, K. Ellis
Full text HTML  | PDF  
Propagation of california wax myrtle: …A valuable native shrub or tree for highway landscaping
by R. M. Sachs, J. Debie, R. W. Isle
Full text HTML  | PDF  
Porous block mulch∗: For ornamental plantings
by S. J. Richards
| Full text HTML  | PDF  
Abstract Not Available – First paragraph follows: water evaporaiion losses from the soil surface constitute one of the inevitable inefficiencies of irrigation. Many types of soil coverings or mulches have been investigated for reducing evaporation losses. Studies have shown that a porous mulch can be made by cementing pea gravel with a small amount of fine sand and cement mortar to hold the gravel grains in a solid array without filling the pores between grains. Such a mulch has favorable characteristics not only for water conservation, but for reducing salinity hazards, preventing soil compaction and minimizing weed control. Water conservation and salinity become even more important in arid or desert areas. For ornamental plantings, such a mulch can be cast in block form for use over the soil surface much like stone or concrete blocks.
Abstract Not Available – First paragraph follows: water evaporaiion losses from the soil surface constitute one of the inevitable inefficiencies of irrigation. Many types of soil coverings or mulches have been investigated for reducing evaporation losses. Studies have shown that a porous mulch can be made by cementing pea gravel with a small amount of fine sand and cement mortar to hold the gravel grains in a solid array without filling the pores between grains. Such a mulch has favorable characteristics not only for water conservation, but for reducing salinity hazards, preventing soil compaction and minimizing weed control. Water conservation and salinity become even more important in arid or desert areas. For ornamental plantings, such a mulch can be cast in block form for use over the soil surface much like stone or concrete blocks.
High Oleic Acid Content in New Safflower, UC-1
by P. F. Knowles, A. B. Bill, J. E. Ruckman
| Full text HTML  | PDF  
Abstract Not Available – First paragraph follows: basc genetic researcuh on safflower introduced to the United States from many parts of the world has turned up a gene with an unusual faculty. This gene changes the proportions of oleic and linoleic acid in the oil, and makes safflower oil chemically like olive oil. Unfortunately, the gene was found in an introduction (UC57-147) which was not suitable for commercial production in this country because of its low yield and low oil content. By crossing UC57-147 to N-10, and then backcrossing the products of the cros twice to US-10, it was possible to transfer the gene to an acceptable commercial safflower type. This type has been termed UC-1. The fatty acid composition of UC-1 and other oils may be noted in the tahle; the graph compares UC-1 with US-10 in fatty acid composition of the oil.
Abstract Not Available – First paragraph follows: basc genetic researcuh on safflower introduced to the United States from many parts of the world has turned up a gene with an unusual faculty. This gene changes the proportions of oleic and linoleic acid in the oil, and makes safflower oil chemically like olive oil. Unfortunately, the gene was found in an introduction (UC57-147) which was not suitable for commercial production in this country because of its low yield and low oil content. By crossing UC57-147 to N-10, and then backcrossing the products of the cros twice to US-10, it was possible to transfer the gene to an acceptable commercial safflower type. This type has been termed UC-1. The fatty acid composition of UC-1 and other oils may be noted in the tahle; the graph compares UC-1 with US-10 in fatty acid composition of the oil.
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California Agriculture, Vol. 19, No.12

New poinsettia, 'Paul Mikkelsen,' may remain attractive from Christmas through the Easter season.
December 1965
Volume 19, Number 12

Research articles

Control of flower initiation in the new durable poinsettia ‘Paul Mikkelsen’
by A. M. Kofranek, W. P. Hackett, R. O. Miller
| Full text HTML  | PDF  
Abstract Not Available – First paragraph follows: a new cultivar of poinsettia will be in plentiful supply for the 1965 holiday season in California market places. This relatively new introduction, named ‘Paul Mikkelsen’ (after the plant breeder), has outstanding keeping qualities. If placed in the north window and properly watered, it may remain attractive beyond the Easter season. This endurance is unequalled in the standard cultivars. The bracts are not as large as the older cultivars, but they have the same vivid red color. Because of its upright stem habit, stake support is not usually required (cover and photo 2).
Abstract Not Available – First paragraph follows: a new cultivar of poinsettia will be in plentiful supply for the 1965 holiday season in California market places. This relatively new introduction, named ‘Paul Mikkelsen’ (after the plant breeder), has outstanding keeping qualities. If placed in the north window and properly watered, it may remain attractive beyond the Easter season. This endurance is unequalled in the standard cultivars. The bracts are not as large as the older cultivars, but they have the same vivid red color. Because of its upright stem habit, stake support is not usually required (cover and photo 2).
Excess Phosphorus and Iron Chlorosis
by P. C. De Kock, A. Wallace
Full text HTML  | PDF  
Slab pruning: Of mature orange trees eases harvesting, reduces yields
by J. E. Pehrson, C. D. McCarty
Full text HTML  | PDF  
A progress review…: The cotton variety improvement program
by John H. Turner
Full text HTML  | PDF  
Extra pounds Extra quality beef…: U. C. heifer selection Program
by R. Helphenstine, K. Ellis
Full text HTML  | PDF  
Propagation of california wax myrtle: …A valuable native shrub or tree for highway landscaping
by R. M. Sachs, J. Debie, R. W. Isle
Full text HTML  | PDF  
Porous block mulch∗: For ornamental plantings
by S. J. Richards
| Full text HTML  | PDF  
Abstract Not Available – First paragraph follows: water evaporaiion losses from the soil surface constitute one of the inevitable inefficiencies of irrigation. Many types of soil coverings or mulches have been investigated for reducing evaporation losses. Studies have shown that a porous mulch can be made by cementing pea gravel with a small amount of fine sand and cement mortar to hold the gravel grains in a solid array without filling the pores between grains. Such a mulch has favorable characteristics not only for water conservation, but for reducing salinity hazards, preventing soil compaction and minimizing weed control. Water conservation and salinity become even more important in arid or desert areas. For ornamental plantings, such a mulch can be cast in block form for use over the soil surface much like stone or concrete blocks.
Abstract Not Available – First paragraph follows: water evaporaiion losses from the soil surface constitute one of the inevitable inefficiencies of irrigation. Many types of soil coverings or mulches have been investigated for reducing evaporation losses. Studies have shown that a porous mulch can be made by cementing pea gravel with a small amount of fine sand and cement mortar to hold the gravel grains in a solid array without filling the pores between grains. Such a mulch has favorable characteristics not only for water conservation, but for reducing salinity hazards, preventing soil compaction and minimizing weed control. Water conservation and salinity become even more important in arid or desert areas. For ornamental plantings, such a mulch can be cast in block form for use over the soil surface much like stone or concrete blocks.
High Oleic Acid Content in New Safflower, UC-1
by P. F. Knowles, A. B. Bill, J. E. Ruckman
| Full text HTML  | PDF  
Abstract Not Available – First paragraph follows: basc genetic researcuh on safflower introduced to the United States from many parts of the world has turned up a gene with an unusual faculty. This gene changes the proportions of oleic and linoleic acid in the oil, and makes safflower oil chemically like olive oil. Unfortunately, the gene was found in an introduction (UC57-147) which was not suitable for commercial production in this country because of its low yield and low oil content. By crossing UC57-147 to N-10, and then backcrossing the products of the cros twice to US-10, it was possible to transfer the gene to an acceptable commercial safflower type. This type has been termed UC-1. The fatty acid composition of UC-1 and other oils may be noted in the tahle; the graph compares UC-1 with US-10 in fatty acid composition of the oil.
Abstract Not Available – First paragraph follows: basc genetic researcuh on safflower introduced to the United States from many parts of the world has turned up a gene with an unusual faculty. This gene changes the proportions of oleic and linoleic acid in the oil, and makes safflower oil chemically like olive oil. Unfortunately, the gene was found in an introduction (UC57-147) which was not suitable for commercial production in this country because of its low yield and low oil content. By crossing UC57-147 to N-10, and then backcrossing the products of the cros twice to US-10, it was possible to transfer the gene to an acceptable commercial safflower type. This type has been termed UC-1. The fatty acid composition of UC-1 and other oils may be noted in the tahle; the graph compares UC-1 with US-10 in fatty acid composition of the oil.

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