Since it inhabits young leaves and buds of strawberry (Fragaria × ananassa Duchesne) crowns, cyclamen mite (Phytonemus pallidus Banks) is a difficult pest to control with biological or chemical means once present in field. Controlled atmosphere temperature treatment (CATT) successful technique that has been commercially used the Netherlands for nearly 2 decades disinfect nursery stock, including elimination mite. During CATT, plants are treated at 35 °C, 50% CO2, 10% O2 under high relative...

This article reports on a study of air-assisted spraying where the effects air speed, airflow rate, and jetorientation were isolated. The was carried out in spray chamber. A carriage supporting standard boomwas moved at 6 km/h over micro-plots greenhouse grown potato plants. Air delivered slightly behind nozzlesfrom variable width slot producing uniform two-dimensional jet that adjustable tilt direction oftravel. Experiments using central composite design (CCD). Compared to full factorial...

<abstract><title><italic>Abstract.</italic></title> In Canada, bioethanol is mainly produced from corn or wheat. Other alternative crops, such as sweet sorghum and pearl millet, have been investigated in the province of Québec, since they both minimal fertilizer water requirements. The objective this study was to investigate effects compressive force harvest time on volume sugar concentration juice extracted finely chopped biomass millet sorghum. Trials using a specific screw press, crop...

Summary The aim of this study was to bleach canola meal by hydrogen peroxide understand the treatment effect on product colour, dry matter and nitrogen extractability. Meal suspensions at 2.5%, 5% 10% (w/v) were treated in 3, 6 H 2 O pH 7 10. bleached extracted under acidic alkaline conditions. results showed a high bleaching effectiveness . L* parameter increased from 47.18 ± 0.56 up 86.80 1.05. Effect significant highly obtained Extractability when with , 26.87 0.10% for control 83.20...

Abstract. Sweet corn requires many insecticide applications to control its main pest: the European borer () (Lepidoptera: Crambidae). The use of is an effective biological alternative in sweet corn. However, manual introduction at large scale using Trichocards time-consuming. Mechanized a boom sprayer innovative and advantageous solution. objective this study was design test spray (Hymenoptera: Trichogrammatidae) canopy under real field conditions. parasitized eggs were sprayed rate 800,000...

Abstract. The European corn borer, (Hübner), is the major insect pest of sweet in province Quebec, Canada, and around world. presence this results substantial yield decreases profit losses for farmers. Currently, chemical insecticides are main method used to control pest. Nevertheless, there some interesting alternatives chemicals controlling particular use predator insects. Many research studies demonstrated effectiveness using wasps successfully borer. However, biocontrol more expensive...

Conventional over‐the‐row sprayers achieve very little deposit on leaves near the ground and underside surfaces of throughout canopy. Air assistance has potential to improve deposition droplets these leaf surfaces. To gain some insight effect air assistance, effects airspeed, airflow rate, jet orientation were isolated. The study was carried out in a spray chamber with standard boom over micro‐plots greenhouse grown broccoli ( Brassica oleracea var. botrytis L.) plants. delivered slightly...

In this study, an improved version of the outlier robust extreme learning machine (IORELM) is introduced as a new method for multi-step-ahead hourly air temperature forecasting. The proposed was calibrated and used to estimate one ten hours in advance after finding its most optimum values (i.e., orthogonality effect, activation function, regularization parameter, number hidden neurons). results showed that IORELM has acceptable degree accuracy predicting temperatures (R = 0.95; NSE 0.89;...

Chehaibi, S., M. Khelifi, A. Boujelban, K. Abrougui. 2012. Effects of tire inflation pressure and field traffic on compaction a sandy clay soil as measured by cone index permeability. Canadian Biosystems Engineering/Le genie des biosystemes au Canada 54: 2.92.15. Many external factors have an effect compaction, including the contact generated at soil-tire interface tires. The main objective this study was to investigate effects number wheeled tractor passes pressures permeability soil. Tests...

<abstract> The Colorado potato beetle (CPB) is a major insect pest of crops in many countries around the world. Chemical insecticides constitute most widely used control method for this pest. To date, no registered chemical product has proven effective at managing CPB on long-term basis. Although biological through manual release natural enemies been successful small scale, large-scale these predators not realistic. objective study was to assess effectiveness mechanical predator insects as...

The foliar chemicals in potatoes (Solanum tuberosum L.) could affect the growth and development of agricultural pests, such as Colorado potato beetle Leptinotarsa decemlineata (Say) aphid Macrosiphum euphorbiae (Thomas). Thus, altering chemical composition leaves potentially supplement integrated pest management (IPM). In this study, field experiments were conducted Quebec, Canada, to investigate effects nitrogen (N) rate source on sugar, glycoalkaloid, amino acid concentrations tuber yield...