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Showing 1 to 20 of 40 for “"dry matter production"”.
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Distribution of dry matter production in twenty families of Virginia pine (Pinus virginiana)
… among the 20 families in the distribution of dry matter. Families differed in branch weight and cone weight but not in stem, stem bark, leaf, and total wood weight (stem + bark + branch weights). Proportionate distributions of stem, branch and stem bark dry weights were significantly different …
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Differential dry matter production, nutritive value and grazing utilisation of perennial ryegrass varieties and mixtures evaluated within intensive grazing regimes
Grass based ruminant production systems aim to utilise large proportions of grazed herbage as high utilisation levels reduce costs associated with ruminant production and therefore maximise profit. Perennial ryegrass (Lolium perenne L.) grazing efficiency has been shown to influence farm herbage …
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Leaf area index, light penetration, and carbohydrate reserves during growth of Kentucky 31 tall fescue (Festuca arundinacea Schreb.)
The interrelationship between dry matter production, leaf area index (LAI), light penetration through the canopy and carbohydrate reserve fluctuations during regrowth under different growth stages and cutting managements of Kentucky 31 tall fescue were studied in three field experiments during …
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From forest to pasture without weeds: A dissertation submitted in partial fulfilment of the requirements for the Degree of Bachelor of Agricultural Science with Honours at Lincoln University
Dry matter production, botanical composition and seedling size of a ryegrass/ subterranean clover pasture sown on 1 April out of Pinus radiata were measured over three harvest dates (28 July, 17 August, 7 September) in Darfield (43° B'S, 172° 8'E). Pasture was grown at 4 lime rates (0, 2.5, 5, 10 T …
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Plant to plant variation in harvest index in lentil (Lens culinaris L.) : A dissertation submitted in partial fulfilment of the requirements for the Diploma of Agricultural Science in the University of Canterbury New Zealand
… 0.40 to 0.50. In autumn-sown lentils, total dry matter production per plant increased from 3.90 to 4.90 g/plant with increased irrigation. Spring-sown plants did not show any significant response to irrigation in dry matter production. Irrigation of the autumn-sown crop had a negative effect …
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Dry matter estimation and potassium fertilization of intensively managed soft red winter wheat
Dry matter production must be predicted to utilize nitrogen recommendation models for winter wheat at growth stage 30. Four methods of dry matter estimation were evaluated for their ability to predict dry matter production. The pasture probe, height, and rising plate methods did not have adequate …
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Characterization of spatial distribution of soil organic carbon stocks in selected land use types and landscapes in Chama District
… levels. The high levels in soils under maize production could be attributed to the use of chemical fertilizers and high dry matter production associated with the application of chemical inorganic fertilization which leads to higher inputs of carbon to the soil through increased root bio mass, …
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Characterization of spatial distribution of soil organic carbon stocks in selected land use types and landscapes in Chama District
… levels. The high levels in soils under maize production could be attributed to the use of chemical fertilizers and high dry matter production associated with the application of chemical inorganic fertilization which leads to higher inputs of carbon to the soil through increased root bio mass, …
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Evaluation of Five Cycles of Selection for Canopy Photosynthesis in Corn
… a primary mechanism which determines the total dry matter production and thus economic yield of a plant. Beginning in 1982, half-sib families of maize synthetic RSSSC were monitored for CO$\sb2$ exchange rate, (CER), a common indicator of photosynthesis. The objectives of the study were to …
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Divergent Phenotypic Recurrent Selection for Nitrate Reductase Activity and Correlated Responses in Maize
… responses in grain yield, grain protein, dry matter production and related parameters. The correlative responses were obtained by growing C(,0) and the four composites from selection under comparable single season environments. Auxiliary studies determined: the relationship between …
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The Control of the Root to Shoot Ratio of Radish (Raphanus sativus L.)
… Robino and Cherrybelle both showed an increased dry matter production but only Robino had an increased root/shoot ratio. Saxa, Serra, Istar and Saxerre showed no increase in dry matter production and a decrease in root/shoot ratio. Daminozide treatment and soil heating increased the root/shoot …
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Genetic and Environmental Responses of Harvest Index and Other Agronomic Traits in Winter Wheat (Triticum Aestivum L.) and Spring Oats (Avena Sativa L.)
… traits, especially harvest index, total dry matter production, and growth rate, for improving grain yield. The effect of four nitrogen fertilizer treatments on harvest index, grain yield, grain protein percentage, grain protein yield, and total dry matter yield of wheat was evaluated for …
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The long-term effect of elevated CO₂ on grassland biomass production
… influence of elevated CO₂ on grassland biomass production at a naturally elevated CO₂ spring situated on the Bongwan gas fault in Natal. The effect of elevated CO₂ on monocotyledenous (C₄) and dicotyledenous (C₃) above ground plant biomass production and their dominance patterns along a CO₂ …
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Seasonal range analysis for white-tailed deer on the Broad Run Wildlife Research Area
… deer range on four study areas by measuring dry matter production of key forages and determining their nutrient composition. Composite diets containing plant species which represented the major portions of each seasonal diet as indicated by food habits studies, were mixed for the summer, fall …
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Environmental drivers of bulb production in brassicas
… cultivars averaged 56oCd (Tb = 3.6oC). Total dry matter production of bulb brassicas was described by logistic curves where leaf production was the main component of yield until bulb development started. From this point, leaf production stabilized until leaf senescence became predominant and …
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Growth and nodulation of autumn sown chickpea (Cicer arietinum L.) as affected by additional nitrogen: A dissertation submitted in partial fulfillment of the requirement for the degree of Bachelor of Horticultural Science (Honours) at Lincoln University
… 37.5, 50 and 100 mol N m⁻³). Leaf area and shoot dry matter production for both chickpea types, and nodule dry weight for Kabuli chickpea were measured. In the field experiment, autumn sown Kabuli and Desi chickpea shoot and nodule dry matter were measured to determine the response of chickpea to …
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The short-term effects of fertilization on loblolly pine (Pinus taeda L.) photosynthesis, dark respiration, and leaf area
… levels, which leads to an increase in dry matter production.
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Forage Production and Quality of Forage Sorghum Intercropped with Sunnhemp at Different Seeding Rates
… is primarily known for grain and forage crop production for cattle feed. It is important to determine alternative crops that provide optimal nutrition to cattle and are drought and heat tolerant due to the increasing importance to improve crop water use efficiency in crops grown in the region. …
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Phosphorus and nitrogen metabolism in soybeans as influenced by potassium
… in N uptake was associated with increased dry matter production rather than K levels, per se. An inverse relationship was found between per cent P and K levels. This was attributed to a dilution effect due to the increased yield with increasing K levels. An extraction-time study on the …
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