Browsing by Supervisor "Clearwater, Michael J."
Now showing items 1-20 of 25
-
Herbicide resistant weeds in maize in New Zealand : A survey for herbicide resistant weeds in the Bay of Plenty and Waikato
(The University of Waikato, 2022)Research on maize weeds in New Zealand is extensive, but few systematic efforts were made to catalogue weed species and determine their prevalence and abundance. Broadleaf weeds were early problems but became manageable ... -
'Hass' avocado tree water use and the effects of water stress on fruit development
(The University of Waikato, 2020)‘Hass’ avocado tree water use and the effects of water deficits on fruit development were assessed in New Zealand from 2017 to 2019. Avocado tree water use was quantified by sap flow measurement and the soil water balance ... -
The effect of deferment length on perennial ryegrass (Lolium perenne) in established grazing pasture and under controlled conditions
(The University of Waikato, 2020)Perennial ryegrass is the dominant sown grass species in New Zealand, however its persistence in pasture is an issue for hill country farms. Deferring the grazing of a pasture over the reproductive cycle of ryegrass may ... -
Understanding the role and impact of introduced honey bees in a submontane indigenous forest ecosystem
(The University of Waikato, 2020)New Zealand’s apiculture industry is the fastest growing in the world, expanding in agricultural landscapes, as well as in native ecosystems. While this has obvious benefits for economy and industry, the impacts on ... -
Predicting site productivity drivers for Podocarpus totara and modelling its growth with 3-PG
(The University of Waikato, 2020)Forests have been identified as key mitigation strategies to reduce net greenhouse gas emissions as they sequester and store carbon through growth. The Emissions Trading Scheme (ETS) and One Billion Tree (OBT) programme ... -
Effect of winter cover crops on nutrition and weeds of maize
(The University of Waikato, 2019)Cover crops are being used in New Zealand to manage soil nutrients and weeds and can have positive or negative effects on the growth of the following main crop. This study investigated the causes of lower yield of maize ... -
Effects of a pre-flower phloem girdle on root pressure and partitioning of carbohydrate in Actinidia chinensis var. deliciosa 'Hayward'
(The University of Waikato, 2019)The objective of this research is to understand the impacts of applying a pre-flower trunk girdle to the kiwifruit cultivar ‘Hayward’ (Actinidia chinensis var. deliciosa). The pre-flower girdle is a recent addition to the ... -
Determining the risk of phosphite tolerance in Phytophthora species in New Zealand and the United States: a case study on the implications of long-term use of phosphite to control Phytophthora cinnamomi in avocado (Persea americana)
(The University of Waikato, 2018)Phytophthora species cause many major plant disease epidemics worldwide, impacting horticulture, plant trade and production planting industries through the loss of plants and the costs arising from disease management. ... -
Development of a Rhizosheath Selection Tool for screening perennial ryegrass (Lolium perenne L.) for reduced root competition against white clover (Trifolium repens L.) for soil phosphorus
(The University of Waikato, 2018)Perennial ryegrass (Lolium perenne L.) outcompetes white clover (Trifolium repens L.) for soil phosphorus [P], resulting in higher P fertiliser rates to overcome the competition. Perennial ryegrass has long, dense root ... -
Investigation of host cell wall degrading strategies of Pseudomonas syringae pv. actinidiae (Psa)
(The University of Waikato, 2018)Kiwifruit (Actinidia deliciosa and Actinidia chinensis) is cultivated in several countries including Italy, France, Chile, China, Japan, Korea and New Zealand and is an important income earner for a majority of these ... -
Pasture burning post irrigation of dairy factory effluent at Edgecumbe, New Zealand
(The University of Waikato, 2017)Pasture “burning” occurs when pasture turns yellow and dies back following irrigation of high strength effluent from the Fonterra Edgecumbe dairy factory. Pasture burning generally occurs intermittently during spring and ... -
Water use efficiency of grazed pastures under contrasting diversity
(The University of Waikato, 2017)Agriculture must increase food production to support a growing global population; however, this required increase in production is potentially restricted by freshwater supply for irrigation. Consequently, relying on ... -
The development and taste of fruit of gold kiwifruit (Actinidia chinensis Planch. Var. chinensis "Gold3")
(University of Waikato, 2017)The “Gold3” cultivar of kiwifruit (Actinidia chinensis Planch. var. chinensis “Gold3”) has proven to be capable of producing high yields, however, growers have also noted an increased risk of small fruit that have high ... -
Water requirements for 'Hass' avocado flowering and fruit development in New Zealand
(University of Waikato, 2016)The aim of this work was to determine water requirements for Persea americana 'Hass’ avocado trees (mature, ca. 9 years and young, ca. 3 years) from November 2014 to October 2015 in Bay of Plenty, New Zealand. In addition, ... -
Epoxy-janthitrems, effects of temperature on in planta expression and their bioactivity against porina larvae
(University of Waikato, 2015)Ryegrass infected with the endophyte AR37 is of significant value to New Zealand’s pastoral sector. It provides superior protection against a range of ryegrass pest insects, and added an estimated $42 million dollars to ... -
Tree species sorting along temperature gradients: How do frost-resistant traits influence competitive ability in the forest environment?
(University of Waikato, 2015)To thrive in the forest environment a species must be able to pass each of three filters: first it must reach a site (the historical filter), then it must be able to tolerate the physical environment (the physiological ... -
Magnitude and controls on the net carbon balance of a New Zealand raised bog
(University of Waikato, 2015)Peatlands play an important role in the Earth system as both persistent carbon dioxide (CO₂) sinks and methane (CH₄) sources. However, large uncertainties remain in our understanding of peatland carbon cycle – climate ... -
Pittosporum kirkii: Autecology of an endemic shrub epiphyte
(University of Waikato, 2012)This research investigated the autecology of the New Zealand endemic shrub epiphyte Pittosporum kirkii (Pittosporaceae). Pittosporum kirkii most frequently displays an epiphytic lifestyle, perched amongst nest epiphytes ... -
Treeline vegetation composition, structure and dynamics across the AD 1655 Burrell Lapilli deposit, Mt Taranaki, New Zealand
(University of Waikato, 2012)Research was conducted on Mt Taranaki, North Island, New Zealand, to examine how the composition, structure and dynamics of treeline vegetation has been influenced by the AD 1655 Burrell Lapilli eruption. Treeline is ... -
Structure, composition and dynamics of Metrosideros excelsa (pōhutukawa) forest, Bay of Plenty, New Zealand
(University of Waikato, 2012)The structure, composition and dynamics of a rare forest type, Metrosideros excelsa (henceforward referred to as Metrosideros) forest, were assessed in the Bay of Plenty Region, North Island, New Zealand. Metrosideros and ...
