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.
Results
Showing 1 to 20 of 41 for “"Growth and productivity"”.
-
Potato growth and productivity under different biological nitrogen fertilization strategies
… dispostas em esquema fatorial (2 × 4 +1 ) empregando parcelas subdivididas em DBC com quatro repetições. O estado nitrogenado da batata foi avaliado pelo índice SPAD e teor de N-total após a aplicação de EC. A produção de matéria seca, a eficiência de recuperação de N e a sua distribuição entre …
-
Biostimulants and phosphorus fertilizer to improve growth and productivity of corn
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
-
Multiple stresses by insect and plant-competition on growth and productivity of Canada thistle
… throughout temperate areas for both the northern and southern hemisphere. As various single tactics have shown limited success in controlling this weed, I believe that a combination of different stress factors is necessary for effective sustainable control of Canada thistle. This study evaluates …
-
Impacts of Elevated Carbon Dioxide and Tropospheric Ozone on the Growth and Productivity of Trees
… rising greenhouse gases, carbon dioxide ([CO2]) and tropospheric ozone ([O3]) have this potential through direct alteration of photosynthesis. This thesis aims to provide quantitative estimates of the magnitude of the impact of these gases on tree growth and productivity. Free-Air Concentration …
-
Eicosapentaenoic Acid (EPA) from Porphyridium Cruentum: Increasing Growth and Productivity of the Microalgae for Pharmaceutical Products
… the effects of two temperatures (16°C & 20˚C) and light intensities (140 & 180µE/M2.S) and four nitrate levels (0.075, 0.3, 0.5 and 0.7g/L) on the cell growth and lipid productivity of Porphyridium cruentum, one of the most promising oil-rich species of microalgae, were investigated. A growth …
-
The growth and productivity of ribes nigrum under various levels of shade and the implications for multifunctional woody polycultures
… an important horticultural crop across Europe and parts of Asia. In the United States, however, they have been relegated to a niche market, with little practical use to date. Much of this is due to the illegality of production throughout much of the 20th century, as it was an alternate host to …
-
Effects of nitrogen and cutting management on root growth and productivity of a Kentucky bluegrass (Poa pratensis L.) and white clover (Trifolium repens L.) pasture
Nitrogen (N) and defoliation effects on productivity, root growth and soil nitrate (NO3-) in a Kentucky bluegrass and white clover pasture were examined. Nitrogen was applied annually in two equally split applications at rates of 0, 80 or 160 kg N ha -1. After reaching 12.7 cm, plants were cut to …
-
Plant secondary metabolites enhance survival and pathogen tolerance in the European honey bee: a structure-function study
… for European honey bee (Apis mellifera) colony growth, and productivity, yet foraging limitations resulting from factors such as habitat loss often lead to dietary deficiencies. Plant secondary metabolites are key constituents of floral nectar that support physiological processes in honey bees, …
-
Pengaruh pemetikanan kuncup bunga terhadap pertumbuhan dan produktivitas pada beberapa aksesi tanaman kapas (Gosypium hirsutum L.)
… Fhitung> Ftabel 0,05 sehingga Ho ditolak. Ini menandakan bahwa terdapat pengaruh pemetikan kuncup bunga terhadap pertumbuhan dan produktivitas, namun antara umur pemetikan dengan aksesi tidak ada interaksi. ENGLISH: Fruit borer (Helicoverpa armigera), potentially reducing productivity up to 30-50% …
-
Carbon dioxide mass transfer within algal raceway ponds and the potential for improvement using slopes to create wave
The growth of microalgae has the potential to be extremely useful for the production of a wide range of products or for specific processes, such as capture and cycling of CO₂. The fast micro-algal growth rates and ability to grow on agriculturally poor land and in waste water means that …
-
Utilising Chlorophyll Fluorescence to Assess the Variability of Phytoplankton Biomass and Productivity in the North-West European Shelf Seas
Marine primary productivity by phytoplankton drives the conversion of CO2 into organic carbon, thus supporting key marine ecosystem services such as biogeochemical nutrient cycles and fisheries. Therefore, the ability to accurately quantify and predict the environmental influences that govern this …
-
PHENOLOGICAL STUDIES OF THREE NATURAL STANDS OF JOJOBA (SIMMONDSIA CHINENSIS (LINK) SCHNEIDER) NEAR TUCSON, ARIZONA.
… a commercial crop, it is important to understand its response to environmental factors and to study its regularity of production. Phenological studies including vegetative growth, floral biology, seed production, and seed wax content were conducted from 1979 to 1982, complementing …
-
Stover, tillage, and nitrogen management in continuous corn for grain, ethanol, and soil carbon
… regarding its potential effects on crop growth and productivity as well as soil quality. Previous research has generally occurred in environments different than those found in the Upper Midwest, meaning application of those conclusions to the Upper Midwest may not be appropriate. This …
-
Evaluation of Grafting Rootstocks on Plant Growth, Fruit Yield and Quality in Tomato (Lycopersicon esculentum Mill).
… plant. Grafting is a common technique in trees and vine crops and is becoming popular in annual vegetable production in order to control biotic and abiotic stresses, improve fruit yield and quality. The objectives of the study were to determine the (a) compatibility of the tomato scion x …
-
Water-use efficiency and productivity in native Canadian populations of Populus trichocarpa and Populus balsamifera
Afforestation and reforestation programs utilizing available fields for biofuel production, carbon sequestration, and other uses linked to climate change are looking to tree physiologists to identify species and genotypes best-suited to their purposes. The ideal poplar genotype for use in Canadian …
-
Molecular mechanisms of stress tolerance in plants
… stress conditions such as drought, salt stress and pathogenic fungi affect negatively plant growth and productivity. Therefore, it is necessary to search for new genetic components and strategies for improving resistance and tolerance in crops. In the present thesis, we describe two different …
-
Field trials to phenotype transgenic tobacco plants with improved RuBP regeneration
… The aims of this project were firstly to produce and identify homozygous transgenic tobacco plants and then to test these plants in field conditions for improved photosynthesis and yield. Transgenic Nicotiana tabacum plants were produced using gene constructs designed to either overexpress the …
-
Recycling and Regeneration of Spent Perfusion Media via Ion Concentration Polarization
… accessibility, particularly for patients in low- and middle-income countries. Addressing this economic barrier is crucial to ensure that life-saving treatments can reach all who need them. We present a series of bioprocessing innovations designed to reduce the cost of monoclonal antibody …
-
Investigating Physical and Chemical Interaction of Aspergillus terreus Spores for Changes in Morphology and Physiology
… spore inoculum size affects culture morphology and secondary metabolite production. The reasons for this, however, have not been investigated thus far. There are two possible explanations as to why spore inoculum size affects fungal morphology, growth and productivity. Firstly, a quorum sensing …
-
Compactação do solo: efeito no perfilhamento e na produção de fitomassa fresca e seca de Brachiaria decumbens
… favoring excessive animal trampling, on the one hand causes breakdown of material and, secondly, causes soil compaction, which becomes a limiting factor for growth and root development of forage species, especially in places where there is greater traffic of animals. Thus, the main objective of a …
Page 1 of 3