Download or read book The Use of Boron on Western Oregon Soils written by Wilbur Louis Powers and published by . This book was released on 1939 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mobility and Plant Availability of Boron in Selected Western Oregon Soils written by David R. Parker and published by . This book was released on 1981 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several crops grown in the Willamette valley of western Oregon respond to applications of boron fertilizers. The acid, highly-leached soils of this area are naturally low in plant-available B. Application of B to the soil annually or at less frequent intervals is currently recommended, but the fate of applied B and the residual effect on plant growth has received little attention. In studying boron in these soils a more convenient and more accurate method for determining hot-water-soluble B based on the azomethine-H procedure was developed and adopted to replace the curcumin method. Substitution of 0.02 M CaC12 for distilled water for extraction of soil B resulted in clear, colorless solutions which permitted accurate colorimetric determination of B.A greenhouse experiment was established to investigate 1) the influence of soil properties on the mobility and plant-availability of B, 2) the magnitude of the loss of B from the surface soil by leaching, and 3) the residual effect of applied B on plant growth and the B supplying power of soils. Soil samples from sixteen locations representing five agriculturally important soil series were studied. The percentage of B from a 2.0 mg B /kg application recovered in 25 cm of leachate decreased as soil organic matter, clay, and free iron and aluminum oxide content increased. The results clearly indicated the importance of organic matter in reducing the mobility of B, and suggested that free Fe and Al oxides, and perhaps clay, may also be important. Soil acidity over a pH range of 5.4 to 7.5 did not influence the mobility of B. Dry matter yields for three cuttings of New Zealand white clover (Trifolium repens L.) were not significantly affected by B soil test level or B applied at planting. Plant tissue concentrations of B were high compared to field-grown forage legumes and, while these concentrations were affected by extractable soil B level or B application, the correlations between soil test level of B and plant content of B were low. A balance-sheet approach, where the amounts of leachate, plant, and extractable soil B were tabulated, indicated a B supplying power for the soils studied. All sixteen soils released B to leaching and cropping with minimal decreases in hot-water-soluble B content. When B was applied to the soils, only those higher in organic matter and/or free Fe and Al oxides tended to "fix" B in a form not recoverable by leaching, cropping and hot-water extraction. The capacity of the soils to maintain soluble B levels under cropping depended both on the individual soil and the amount of B present (i.e., check vs. B applied). The results are in agreement with a small body of literature suggesting the importance of intensity/capacity relationships in the availability of B to plants.
Download or read book Optimum and Critical Concentrations of Boron in Oregon Soils written by James Verdun Jordan and published by . This book was released on 1947 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identification and Productivity of Western Oregon Soil Types written by Wilbur Louis Powers and published by . This book was released on 1948 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liming Western Oregon Soils written by Roscoe Elmo Stephenson and published by . This book was released on 1949 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boron and Its Role in Crop Production written by Umesh C. Gupta and published by CRC Press. This book was released on 1993-07-23 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boron and Its Role in Crop Production provides a broad perspective on this subject by experts from around the world. The book offers in-depth coverage of the chemistry of boron, the extraction of boron from various soils, methods for determining boron in soil and plants, and the role of boron in the physiology of plants and seed production. It also examines the technology and application of boron fertilizers for crops, the response to boron of various crops, boron deficiency and toxicity in plants, and boron distribution among plant parts. Modeling of boron adsorption and desorption to provide a description of chemical systems in soils is explained, and models for detoxifying boron in irrigation water high in boron content are described.
Download or read book Boron in Soils and Plants written by R.W. Bell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The economic significance of boron (B) in agriculture, horticulture, and forestry has been beyond dispute for several decades. Even in the last two decades, the areas where B deficiency limits plant production has grown with increased reports from China, south Asia and southeast Asia. The present volume is reflective of the growing awareness of the significance of low soil B with reports from Australia, Bangladesh, Brazil, north, central and southern China, India, Nepal, and the North West Frontier Province of Pakistan contained herein. Boron deficiency also continues to be a problem for crop yield and quality in areas where B deficiency has been known for some time, for example in Germany and the USA. The problem of low soil B is not limited to effects on field crop yield, with papers reporting on depressed wood yield and quality in timber trees (Lambert et al. ), and depressed fruit quality (Dong et al. ; Smith et al. : Zude et al. ) also appearing in the present volume. Globally, Shorrocks (1997)1 estimates that ?? tonnes of B fertiliser is applied annually in agriculture. The economic benefits from the use of B fertiliser have not been quantified but are clearly enormous. Paradoxically, the clear economic imperatives for using B fertiliser on low B soils are not matched by a similar clarity of understanding of the role and functions of B in plants.
Download or read book Report written by Oregon. Agricultural experiment station, Corvallis and published by . This book was released on 1920 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liming Western Oregon Soils written by Oregon State University. Agricultural Experiment Station and published by . This book was released on 1928 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Circular of Information written by Oregon. Agricultural experiment station, Corvallis and published by . This book was released on 1932 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Survey of Yamhill Area Oregon written by United States. Soil Conservation Service and published by . This book was released on 1974 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Agricultural Research written by and published by . This book was released on 1946 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research on Forest and Range Soils in Oregon and Washington written by and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water and Anion Movement in Selected Soils of Western Oregon written by Dale P. Hammermeister and published by . This book was released on 1977 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ratio of Sulfur to Phosphorus in Western Oregon Soils and Losses of Sulfur Through Drainage and Cropping written by J. Shirley Jones and published by . This book was released on 1928 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boron in Agriculture written by Pacific Coast Borax Company and published by . This book was released on 1944 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acidifying Soil for Crop Production West of the Cascade Mountains western Oregon and Washington written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
