Global ETD Search

1	The Genetic Basis for Seed Coat Polymorphisms In Lupinus Perennis Wilson, Rachel Erin 26 November 2019 (has links) No description available. Biology Genetics Lupinus perennis RNAseq Seed coat Seed polymorphism
2	Seedling Recruitment and Establishment of Lupinus perennis in a Mixed-Management Landscape Plenzler, Michael A. 07 August 2008 (has links) No description available. Biology Recruitment Establishment Lupinus perennis Management Fire Mowing
3	Peromyscus Population Dynamics and Seed Predation of Lupinus Perennis in and Near Oak Savannas of Northwest Ohio Kappler, Rachel Hope 29 July 2009 (has links) No description available. Biology Ecology Peromyscus Lupinus perennis oak savanna seed predation Northwest Ohio Program MARK tracking tubes
4	THE CONSEQUENCES OF A MANAGEMENT STRATEGY FOR THE ENDANGERED KARNER BLUE BUTTERFLY Pickens, Bradley A. 02 June 2006 (has links) No description available. Biology, Ecology butterfly Karner blue butterfly Lycaeides melissa Lupinus perennis management behavior oak savanna nutrition host-plant quality foraging prescribed burning nitrogen
5	A STUDY ON THE EFFECTIVENESS OF TRANSPLANTING VS. SEEDING OF <i>LUPINUS PERENNIS</i>IN AN OAK SAVANNA REGENERATION SITE St. Mary, Mark K. 21 May 2007 (has links) No description available. Biology, Ecology <i>Lupinus perennis</i> savanna restoration seeding transplants butterfly habitat
6	The use of cover crops to increase yield and reduce pest pressure in a commercial avocado orchard at Levubu, Limpopo Province Nengovhela, Ndoweni Mary 13 August 2020 (has links) MENVSC / Department of Ecology and Resource Management / The study investigated the impact of cover crops (Medicago sativa, Lotus corniculatus, Trifolium pratense, Melilotus alba and Phacelia tanacetifolia), bare soil and natural ground cover on pest and beneficial arthropods, soil health, crop yield, pest damage and weed suppression in avocado orchards. The trial plots were sited within established commercial avocado orchards with trees of similar cultivar (‘Hass’), soil-type and age, located in Levubu, Limpopo, South Africa. Mixtures of cover crops were planted in the alleys of avocado orchards and the effects were compared to that of a control (other half of the orchard). Mechanical clearing of vegetation in half of the alleys of different avocado orchards were compared to the other half that was left undisturbed. Data were collected during the flowering and fruit set stages of the avocado trees in the months of September - November 2019. Results revealed that there was higher abundance and diversity of flowering plants in the orchard alleys of the cover crop treatment compared to the control comprising of natural vegetation. Cover crops had a significantly positive effect on the soil health of the orchard but little or no effect on beneficial arthropods within the orchard nor any positive effect on the pests of avocados. However, the number of thrips scouted on the fruit were significantly less where cover crops were established. Avocado scale infection rates were also significantly lower where cover crops were established. There were significantly less arthropods, and specifically pests, pollinators and herbivores where the topsoil was removed mechanically. The yield resulting from the orchard half where cover crops were established were significantly higher. More research still needs to be done about the use, management and impact of cover cropping on not only commercial avocado orchards but on other fruit crops. This study shows good evidence for the benefits for using cover crops and the negative effects in having no vegetation cover in the orchards. / NRF Avocado Cover crops Biodiversity Pests Pollinators Predators 631.4520968257 Cover crops -- South Africa -- Limpopo Catch crops -- South Africa -- Limpopo Avocado -- South Africa -- Limpopo Lupines-- South Africa -- Limpopo

1

Page generated in 0.063 seconds