Articles by Keyword: Seed Quality

Search results for Seed Quality

We found 390 results for you
  1. The effect of environment and cultivar on sunflower seed. II. Composition and processing quality

    The effect of environment and cultivar on sunflower seed. II. Composition and processing quality

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The processing quality of sunflower seed is determined by its oil yield, oil cake yield and oil cake composition. Quality of the oil cake is determined by its protein and crude fibre content. Seed composition is affected by both cultivar...
  2. The yield and processing quality of sunflower seed as affected by the amount and timing of nitrogen fertiliser

    The yield and processing quality of sunflower seed as affected by the amount and timing of nitrogen fertiliser

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The response of sunflower (Helianthus annuus L.) seed yield and seed processing quality to the amount and timing of nitrogen were studied in a field trial. Nitrogen application rates were 20, 70 and 120 kg ha−1 with limestone ammonium nitrate...
  3. The effect of water stress during grain filling on the yield and processing quality of sunflower seed

    The effect of water stress during grain filling on the yield and processing quality of sunflower seed

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The oil and protein contents of sunflower seed are affected by water stress. Hullability is a seed quality trait which affects the efficiency of oil extrusion and the quality of the oil cake produced from the seed. Apart from cultivars,...
  4. Development and validation of relationships between sunflower seed quality and easily measurable seed characteristics for grading purposes

    Development and validation of relationships between sunflower seed quality and easily measurable seed characteristics for grading purposes

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sunflower seed delivered by farmers is usually traded without taking seed quality into account, owing to the lack of a quick and inexpensive method for quality assessment at delivery points. Seed quality parameters (oil content, protein content, hullability and amount...
  5. Effect of temperature on cone bursting, seed extraction and germination in five provenances of <em>Pinus roxburghii</em> from Garhwal Himalaya in India

    Effect of temperature on cone bursting, seed extraction and germination in five provenances of <em>Pinus roxburghii</em> from Garhwal Himalaya in India

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Pinus roxburghii (chir pine or long-needle pine) is considered to be a fire-hardy species. In this study the effect of a wide range of elevated temperatures (from 40 °C to 150 °C) on cone bursting and subsequent seed germination was...
  6. Reproductive biology of the critically endangered tropical tree <em>Talbotiella gentii</em>

    Reproductive biology of the critically endangered tropical tree <em>Talbotiella gentii</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Talbotiella gentii is a critically endangered caesalpiniaceous legume endemic to Ghana, restricted in distribution to the margins of the forest zone where there has been extensive fire damage in recent decades. It occurs as isolated, near-monospecific populations, some of which...
  7. The Application of Inorganic Fertilisers to Conditioned <em>Pinus radiata</em> Prior to Lifting as a Means of Improving Root Growth Capacity

    Item type: Journal Article • Journal: South African Forestry Journal
    A modified root growth capacity technique was used to evaluate the effect of the application of different types and quantities of fertilisers on the root growth capacity (RGC) of conditioned Pinus radiata seedlings. The experiment indicates that 0,05 g N...
  8. Comparison of <em>Eucalyptus grandis</em> Provenances and Seed Orchards in a Frost Frequent Environment

    Item type: Journal Article • Journal: South African Forestry Journal
    An international provenance trial of Eucalyptus grandis was established in southern Florida in 1980 and measured for growth and frost-tolerance through 8,8 years. The trial compared 20 Australian provenances 1) among themselves and 2) with seed orchard stock from Florida...
  9. The Impact of Harvesting Operations on Timber Quality: Causes and Remedies

    Item type: Journal Article • Journal: South African Forestry Journal
    Forests are devastated daily to satisfy the world's timber demands. Tropical forests throughout the world are exploited and endangered. An obligation therefore exists to avoid damage to timber and minimise waste wherever possible.
  10. Regeneration Procedures of <em>Pinus radiata</em> in the Southern Cape Province

    Item type: Journal Article • Journal: South African Forestry Journal
    Part 4 of the series of papers concerning the regeneration of Pinus radiata deals with characteristics of the planting stock. Such studies are motivated by the necessity of evaluating different planting stock alternatives for a variety of operational environments. This...