Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 67 for “"seedling emergence"”.
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The effects of planting methods and granivory on seedling emergence in a tallgrass prairie reconstruction
1 PDF file (viii, 98 pages)
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Effects of soil amendments on crusting, seedling emergence and yield of onion, tomatoes and peppers.
… or crust formation, soil chemical properties, seedling emergence and yields of onions (Allium cepa), tomatoes (Lycopersicum esculentum) and chili peppers (Capsicum sp.) were studied on a Pima clay loam soil. Treatments were surface applied on a strip above the seeds. The chemicals influenced …
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Saltcedar (Tamarix spp.) in the Northern Great Plains: Seed Ecology and Cultural Considerations
… setting, 2) assess the seasonality of saltcedar seedlings in the northern Great Plains (NGP), and 3) to determine native Lakota cultural viewpoints of saltcedar and its impacts on the tribes in South Dakota. The first study evaluated saltcedar seedling emergence in conditions found in riparian …
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Seasonal Movements of White-tailed Deer in Eastern South Dakota and Southwestern Minnesota Relative to Traditional Ranges and Management Unit Boundaries
… setting, 2) assess the seasonality of saltcedar seedlings in the northern Great Plains (NGP), and 3) to determine native Lakota cultural viewpoints of saltcedar and its impacts on the tribes in South Dakota. The first study evaluated saltcedar seedling emergence in conditions found in riparian …
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Red morningglory (Ipomoea coccinea L.) biology and management in sugarcane
… %. From June through October, red morningglory seedling emergence was compared for no tillage and tillage treatments. Seedling emergence was equal for the tillage treatments in July, but more seedlings emerged in August and September where plots were tilled. Total seedling emergence for the …
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Improving Vegetable Soybean Production Through Investigating the Impact of Genotype and Environmental Factors on Germination and Emergence
… problem in edamame production is the poor seedling emergence. This dissertation focuses on three key objectives: 1) exploring the physiological traits linked to the low emergence of edamame seeds; 2) enhancing edamame seedling emergence by identifying genotypes with high vigor and …
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Effects of watering interval, planting depth and soil crusting on ermegence and seedling establishment of sorghum (sorghum bicolor (L.) moench)
… interval, planting depth, and crust formation on emergence and seedling establishment of sorghum. Three separate pot experiments were conducted using three soil types and sorghum as a test crop. Various treatment combinations of soil type/watering interval, soil type/planting depth and soil …
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Effects of watering interval, planting depth and soil crusting on ermegence and seedling establishment of sorghum (sorghum bicolor (L.) moench)
… interval, planting depth, and crust formation on emergence and seedling establishment of sorghum. Three separate pot experiments were conducted using three soil types and sorghum as a test crop. Various treatment combinations of soil type/watering interval, soil type/planting depth and soil …
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Seedling emergence and growth of winter barley as affected by sowing date and sowing depth: a dissertation submitted in partial fulfilment of the requirements for the degree of Bachelor of Agricultural Science with Honours in the University of Canterbury
… depths (20 mm and 50 mm) at Lincoln, Canterbury. Seedling emergence rate, total emergence and canopy development (number of leaves on the main stern, number of tillers and dry matter accumulation) were measured. A high level of total emergence (83-93%) resulted from all treatment combinations. …
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Quantitative multifactor analysis of planter settings and row unit design for corn stand establishment in precision agriculture
… of furrow closure, which in turn affects early seedling emergence and final stand uniformity. Nonetheless, there exists a gap in the comprehensive understanding of optimal combinations of these factors, particularly in the context of varying environmental conditions and emerging adaptive …
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The effect of sowing date, sowing depth and seed size on seedling emergence of wheat: A dissertation submitted in partial fulfilment of the requirements for the degree of Bachelor of Agricultural Science (Hons.) in the University of Canterbury
… with sowing depth, in that rate and total emergence from small seed (TSW 36g) was reduced in comparison with large seed (TSW 53g), but the effect was more marked at deeper sowings. It is suggested that one of the main reasons for the reduced emergence of deep sowings was the higher …
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Factors associated with Atlantic white -cedar seedling recruitment on microtopographic and landscape scales, Brown Mill Pond, Rye, New Hampshire
… has motivated researchers to investigate cedar seedling recruitment. In this study, conducted at Brown Mill Pond in Rye, New Hampshire, the distribution pattern of cedar seedlings was studied in order to identify which, if any, biological or physical factors observed at a microtopographic scale …
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The Investigation of the Soil Seedbank in a Long-term Mowing and Fertilization Experiment
… from each plot at two depths and used the seedling emergence method to characterize the soil seedbank community in a growth room. Long-term fertilization could alter seedling emergence either through its effect on the aboveground community and the seeds that enter the seedbank or through …
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Testing assisted gene flow in restoration of winterfat, Krascheninnikovia lanata, a Great Basin desert shrub
… winterfat (Krascheninnikovia lanata), asking how seedling emergence and outplant seedling survival vary among 15 populations collected across both deserts. Populations were sampled across a 116,893 km2 boundary. We monitored seedling emergence in a greenhouse, grew plants for 9 months, and …
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Metabolomic Discrimination of Near Isogenic Low and High Phytate Soybean [GLYCINE MAX (L.) MERR.] Lines
… been developed, a major drawback is the reduced seedling emergence of these lines resulting in low yields. Therefore, understanding the genetic and molecular bases of the low emergence trait in relation to seed phytate content in major crops such as soybean is of great economic importance. This …
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Effect of dsRNA-containing and dsRNA-free hypovirulent isolates of Fusarium oxysporum on severity of Fusarium seedling disease of Essex soybean
… from healthy and necrotic Essex soybean seedlings grown in naturally infested soil. These were tested for pathogenicity at 20 C and -0.01 MPa water potential in artificially infested, autoclaved field soil. Highly pathogenic, moderately pathogenic, and hypovirulent isolates of both …
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Influence of tillage and mulch on the early growth of corn
… temperature measurements from each plot. Plant emergence rate was recorded. Whole plant samples were collected at leaf stages 4 and 6 to measure plant height and dry weight and to provide plant material for chemical analysis. Plant population and dry matter and grain yields were measured at the …
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Grass invasion in urban lowland fynbos fragments on the Cape Flats : does nutrient addition play a role?
… the negative effects of grass invasion on seedling establishment and diversity of native species by removal of grass cover and addition of smoke water. Phytometer results were inconclusive, but soil from city sites generally had higher total N than control sites for comparable amounts of …
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Creeping bentgrass response to plant growth regulating substances and annual bluegrass competition
… 1I plant growth regulator application, following seedling emergence reduced creeping bentgrass seedling populations. Competition from established annual bluegrass and close frequent cutting were deemed reasons for lack of creeping bentgrass establishment success. Creeping bentgrass turf was …
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The effect of hydroperiod on seed banks in semi-permanent prairie wetlands
… then counting and identifying emerged seedlings. As a check against the seedling emergence method, seeds were separated and identified microscopically in one-third of the 1985 samples. Results indicated that the emergence method was an accurate technique for assessing seed pool …
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