Data mining algorithms were used to develop models to forecast the outcome of leafroller pest monitoring decisions on ‘Hayward’ kiwifruit crops in New Zealand. Using industry spray diary and pest monitoring data gathered at an orchard block level for compliance purposes, 80 attributes (independent variables) were created in three categories from the spray diary data: (1) individual insecticide ...

The Guthion-resistant strain of walnut aphid parasite, Trioxys pallidus, was reared in the greenhouse on potted walnut trees and released into a commercialwalnut block near Gridley during the 1989 growing season where it established, survived Guthion,and spread to an adjacent blocktreated with Lorsban. Aphidand parasite counts suggest the parasites controlled the aphids in both the Guthionand L...

The effectiveness of two different types of pheromone release systems in disrupting OBLR mating and subsequently preventing fruit damage were compared in 2.6–5.6-acre blocks in three commercial orchards in western NY: (1) Microsprayers (aerosol spray-burst devices, MSU), one application setup for the summer (Doyle and Oakes orchards); (2) Paraffin-based pheromone emulsions (Agrium), one applica...

Introduction New rootstocks for peaches have been recently introduced into the United States through commercial nurseries. Most all of these rootstocks are complex Prunus L. hybrids that are propagated asexually. Past experience with newly introduced Prunus rootstocks has shown that extensive testing is critical to avoid potential problems in commercial situations due to nonadaptation of some r...

Urban and peri-urban agriculture is becoming increasingly important as a source of income and food for the urban population in South Africa. This study was prompted by concerns of city authorities that soil compaction in horticultural fields that used conventional tillage practices with tractors was, not only limiting the performance of fruit and vegetable crops, but also affecting the quality ...

Introduction: Recent work by [1] indicates that the mesoside-rites are isotopically identical to the HEDs, strongly suggesting that they originate from the same parent body. One argument against this theory is the differences between the silicates within the two meteorite groups. Mesosiderite pyroxenes tend to have higher MgO concentrations and lower Fe/Mn ratios, which show a positive correlat...

In the 1996 Winter issue of Fruit Notes, we reported results of our 1995 research on plum curculio responses to unbaited “Tedders” traps. These traps are pyramidal in shape, dark in color, and are placed on the ground. They capture curculios that arrive on the trap surface and subsequently crawl upward to the tip, where they enter an inverted screen funnel (a cotton boll weevil trap top) placed...

Remote sensing can provide good alternatives for traditional in situ water status measurements in orchard crops, such as stem water potential (Ψstem). However, the heterogeneity of these cropping systems causes significant differences with regards to remote sensing products within one orchard and between orchards. In this study, robust spectral indicators of Ψstem were sought after, independent...

The estimation of site water budget is important in Mediterranean areas, where it represents a crucial factor affecting the quantity and quality of traditional crop production. This is particularly the case for spatially fragmented, multi-layer agricultural ecosystems such as olive groves, which are traditional cultivations of the Mediterranean basin. The current paper aims at demonstrating the...

ABSTRACT Apple replant disease typically is managed through pre-plant application of broad-spectrum soil fumigants including methyl bromide. The impending loss or restricted use of soil fumigants and the needs of an expanding organic tree fruit industry necessitate the development of alternative control measures. The microbial community resident in a wheat field soil was shown to suppress compo...