Proceedings
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| Filter results5 paper(s) found. |
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1. Unmanned Aerial System Applications In Washington State AgricultureThree applications of unmanned aerial systems (UAS) based imaging were explored in row, field, and horticultural crops at Washington State University (WSU). The applications were: to evaluate the necrosis rate in potato field crop rotation trials, to quantify the emergence rates of three winter wheat advanced yield trials, and detecting canker disease-infection in pear. The UAS equipped with green-NDVI imaging was used to acquire field aerial images. In the first application,... L. Khot, S. Sankaran, D. Johnson, A. Carter, S. Serra, S. Musacchi, T. Cummings |
2. Should One Phosphorus Extraction Method Be Used for VRT Phosphorus Recommendation in the Southern Great Plains?Winter Wheat has been produced throughout the southern Great Plains for over 100 years. In most cases this continuous production of mono-culture lower value wheat crop has led to the neglect of the soils, one such soil property is soil pH. In an area dominated by eroded soils and short term leases, Land-Grant University wheat breeders have created lines of winter wheat which are aluminum tolerant to increase production in low productive soils. Now the fields in this region can have... D.B. Arnall, S. Phillips, C. Penn, P. Watkins, B. Rutter, J. Warren |
3. Use of the Active Sensor Optrx to Measure Canopy Changes to Evaluate Foliar Treatments and to Identify Soil Quality in Table GrapeTable Grape (Vitis vinifera L.) is the main exporting horticultural crop in Chile, with the country being one of the top exporters at the world level. Commonly, grape producers perform trials of different commercial products which are not evaluated in an objective way. On the other hand they do not have the tools to easily identify areas within the field that may have some limiting factor. The use of active ground sensors that pass under the canopy several times during the season may... R.A. Ortega, M.M. Martinez, H.P. Poblete |
4. Soil Factors Affecting Severity of Verticillium Wilt in Kiwifruit (Actinidia Deliciosa)Verticillium wilt, caused by the soil-borne fungal pathogens Verticillium albo-atrum and V. dahliae, represents a highly destructive vascular disease in kiwifruit, with pronounced impact on gold kiwi (Actinidia chinensis). The disease manifests as acute wilting, shoot dieback, foliar necrosis, and, in severe cases, complete plant mortality. Conversely, green kiwi (Actinidia deliciosa) exhibits greater resistance to Verticillium wilt; while the disease does not typically cause vine death, it adversely... H. Poblete, R.A. Ortega, M.M. Martinez, I. Ortega |
5. Spatial Variability of Biochemical Soil Properties and Its Relationship to Physical and Chemical Properties and Vegetation IndicesBiochemical soil properties, particularly enzymatic activity, are increasingly recognised as important indicators of soil quality within the context of regenerative agriculture. However, limited information exists regarding the spatial variability of these properties in fruit orchards at varying scales, as well as their relationships with other soil characteristics, such as texture and soil organic matter, and with plant quality. This study aimed to investigate the spatial variability... R.A. Ortega, M.M. Martinez, H. Poblete, I. Ortega |