To improve the accuracy and reliability of orchard spraying robots, an integrated navigation system was developed, consisting a real-time kinematic positioning-Beidou satellite (RTK-BDS) receiver, inertial measurement unit (IMU), controller, servo motors. Using loose coupling combination method, error Kalman filter algorithm based on position heading angle is implemented to correct in real time...

Robotics and intelligent sensing systems can provide useful information to improve yield and quality in specialty crop production. A key requirement for treecrop applications is the ability to associate sensed data to the individual trees in an orchard. A mobile ground robot with a scanning lidar (laser range sensor) is used to build a three dimensional (3D) model of an orchard and algorithms a...

Orientational responses of four species of feral tortricid moths (Lepidoptera: Tortricidae) to polyethylene tube dispensers of pheromone were observed in a 0.8 ha apple orchard treated with such pheromone dispensers and in an untreated 0.8 ha orchard. Male oblique-banded leafrollers, Choristoneura rosaceana (Walker) (mean 7.2 ± 0.4 moths/night during 21 nights) , Oriental fruit moths, Grapholit...

Abstract. Orchard tree inventory plays an important role in acquiring up-to-date information on planted trees for effective treatments and crop insurance purposes. Determining damage could help assess orchards’ health faster cheaper. Having accurate the tree’s status also managers to plan necessary fieldwork predict productivity. Traditional orchard is often performed manually, thus time-consum...

Teacher preparation is a highly contested area in England with a range of epistemological approaches potentially being promoted through the availability of a range of preparation routes. The dominant model of teacher preparation used by programmes led by university education departments is that of developing reflective practitioners. However, other models, including those coined as ‘craftworker...

Northern red oak is a high-value hardwood used for lumber, furniture and veneer. Intensively managed northern red oak seed orchards are required to obtain genetic gain for trait improvement. Data from conifer seed orchards and natural and managed stands of hardwood trees have shed light on the distance over which pollen can move, and underscore the need for managerial attention to seed orchard ...

1. The relations between food intake, reticulo-ruminal motility and abomasal digesta outflow were investigated in ewes receiving lucerne (Medicago sativa) v. orchard grass (Dactylis glomerata) hay. Abomasal digesta outflow was recorded continuously by means of an electromagnetic flowmeter probe inserted into a duodenal T-shape cannula and the motility using strain-gauge force transducers. Volum...

Shortleaf pine (Pinus echinata Mill.) is an important conifer in much of the southeastern United States. However, the species and its associated ecosystems are in decline, and recent evidence about hybridization with loblolly pine (Pinus taeda L.) raises concerns that the species may be at risk of further losses due to introgression. Although shortleaf pine is not widely planted for timber prod...