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 36 for “"Field crops"”.
-
Occurrence and Significance of Vesicular-Arbuscular Mycorrhizae in Saskatchewan Soils and Field Crops
… of VAM in soils and their symbiosis with crops is important to understand the impact of VAM on crops in agroecosystems. This information may be used to manage VAM so as to maximize their contribution to plant growth and development My research assessed the occurrence and significance of …
-
Economic impact of climate change on major South African field crops : a Ricardian approach
Please read the abstract in the 00front part of this document
-
Effects of Farm Management Practices on Pest Slugs and Slug Predators in Field Crops
… tillage and planting high residue cover crops. These practices are associated with an increase in moderate to severe damage to field crops by slugs. Conserving, and even enhancing, natural enemy populations is a desirable way to manage slug infestations because remedial control measures …
-
The history and development of the Virginia Seed Service, Inc. into the Southern States Cooperative, Inc.
… the more widespread use of improved seed for field crops.
-
Inheritance of Resistance in Dent Corn to Wheat Streak Mosaic Virus and Erwinia Stewartii
… is the primary means of controlling diseases of field crops, such as dent corn (Zea mays L.). Knowledge of the inheritance of resistance facilitates its incorporation into agronomically desirable germplasm. Relatively little is known about the inheritance of resistance in corn
-
The effects of environmental factors on honey bee morbidity
… being located near neonicotinoid seed treated crops increases honey bee morbidity. Second, I examine if forage availability and weather affect honey bee health. Third, I provide a demonstration of how the biological modeling of environmental factor effects on honey bee health can be used by …
-
A morphological study of some of the immature stages of Cryptohypnus nocturnus eschscholtz, and a study of some ecological factors concerning wireworms : a preliminary study
… and widely distributed pests of cultivated crops. They have undoubtedly caused some losses from the earliest days of agriculture, since their importance has been recognized from the beginning of economic entomology. Several species of Elaterids are injurious to crops; scarcely any plant …
-
Differential moisture sensitivity in the life cycle of selected vegetable crop
… In an area like Saskatchewan, the production of crops important to the horticulturist can be expected to attain significant economic importance only with the use of supplementary water. The forthcoming opening of tens of thousands of acres of irrigable land in the South Saskatchewan and other dam …
-
Biofuel supply chain challenges and analysis
… are liquid fuels that are mainly derived from field crops. This paper examines the supply chain challenges and issues that exist for bringing biofuel production up to scale. One major challenge that exists is how to transport the feedstock from a farm to a refinery in the most cost efficient …
-
EFFECTS OF CO-INOCULATION OF ARBUSCULAR MYCORRHIZAL FUNGI AND RHIZOBIUM ON THE TRIPARTITE ASSOCIATION WITH FIELD PEA (Pisum sativum) AND LENTIL (Lens culinaris) UNDER SASKATCHEWAN FIELD CONDITIONS
… western Canada as a commercial biofertilizer for field crop production. Mycorrhizal inoculant use is an established practice in land reclamation and horticultural activities; however, it is only an emerging interest in agricultural systems. Key questions need to be answered regarding its impact on …
-
Türkiye'de yetiştirilen ekmeklik ve makarnalık buğday (Triticum spp.) çeşitlerinin in vitro koşullarda tuza toleranslarının belirlenmsi
… out in Biotechnology Laboratory, Department of Field Crops, Faculty of Agriculture in Ankara University.This study was arranged both in vitro and in vivo conditions. The effect of 7 different salt doses (0, 3, 6, 9, 12, 15 and 18 g/l) on callus induction and plant regeneration in the …
-
Where trees grow, assets grow: applying spatial matching to evaluate agroforestry’s household welfare impacts in Kenya
… planted in association with annual field crops--has potential as a method for sequestering carbon while reportedly increasing agricultural yields and farmer income. However, measuring the downstream effect of agroforestry promotion on household welfare is difficult due to the …
-
The use of the fungus Ascochyta caulina as a biological control agent for the weed Chenopodium album. Evaluation of the bioherbicide formulation efficacy of Ascochyta caulina on different life stages of the weed plant Chenopodium album under laboratory and field conditions comparing Libyan and UK populations.
… due to its highly competitive influence on field crops. Chemical herbicides have increased the efficiency of farming, but recently problems of herbicideresistant weed populations and herbicide residues in soil, water, food products and effects on non-target organisms have increased, …
-
Landscape of the Past: The 1815 Log House at Western Kentucky University
… of the house will be used to display examples of field crops, including 'Stowell's Evergreen" corn. An area close to the house has been designed for a native plants display. Construction of these gardens in the spring of 2008 involved the removal of grass around the house in keeping with …
-
The cabbage whitefly, aleyrodes Proletella: causes of outbreaks and potential solutions
… years become a primary pest of several brassica crops in Europe. In the UK, its greatest impact has been on kale, where nymphs, wax deposits and sooty mould caused by honeydew excretion reduce the marketable portion of the crop, particularly later in the year. In order to test the contribution of …
-
Herbicide strategies for Palmer amaranth (Amaranthus palmeri) management in Illinois
… of damage this weed can inflict to Illinois row crops is not yet known. Palmer amaranth is known for rapid biomass accumulation and multiple emergence events, making this weed difficult to control. Field and greenhouse experiments were conducted in 2015 and 2016 to evaluate the biology and …
-
The Role of Agricultural Cooperatives in Poverty Reduction: A Case Study of Selected Cooperatives in the Four Local Municipalities of Vhembe District Municipality, Limpopo Province, South Africa
… There are 70 agricultural cooperatives producing field crops and vegetables in Vhembe District. A clustered random sample of the 4 Local Municipalities within Vhembe District Municipality was employed. It involved the selection of 9 cooperatives from Thulamela, 3 cooperatives each from Makhado and …
-
Crops, pesticides, and honey bee disease
… areas and disease load, as well as agricultural field crops and disease load. The conclusions of this analysis show that natural areas do not seem to have a strong or significant impact on honey bee morbidity factors. In my analysis, I observe that agricultural land does not have a consistent …
-
Quantification of neonicotinoid residues in soils and dust drift in conservation reserve program fields in Illinois, USA
… are also registered to use on other major field crops, such as cotton and wheat. Increasing attention has been paid to the extensive use of neonicotinoids, considering that empirical evidence has shown that neonicotinoids can affect bee longevity and behavior. Furthermore, dust drift from …
Page 1 of 2