Showing papers in "Journal of Agricultural Engineering Research in 1996"

TL;DR: In this article, the physical properties of cumin seed were evaluated as a function of moisture content, and the average length, breadth and thickness were 5·61, 1·77 and 1·55 mm respectively.

TL;DR: In this article, a simplified impedance measuring system is used to determine soil water content, which can be used in field data loggers to calculate the soil water volumetric fraction.

TL;DR: In this article, the authors evaluated the physical properties of karingda seed and kernel as a function of moisture content, and found that the bulk density of seed increased from 487 to 595 kg/m3 and 501 to 646 kg/ m3respectively.

TL;DR: In this paper, the authors evaluated the physical properties of lentil seed as a function of moisture content and found that the average diameter, thickness, unit mass and volume of seed were 6·64 mm, 2·65 mm, 0·070 g and 49·08 mm 3 respectively at 6·5% m.c.b.

TL;DR: In this article, a randomized plot experiment compared losses from a direct cut and a swathed crop when harvested at the recommended agronomic stage of maturity and at a later date.

TL;DR: The physical properties of neem nut were determined in the moisture range of 7·6% to 21% w.b.t. as mentioned in this paper, including physical dimensions, crushing strength, 1000 nut mass, relative mass of kernel and shell, angle of repose, porosity, bulk density, particle density and coefficient of static friction.

TL;DR: In this article, the effect of slatted floor on ammonia emission and the excretory and lying behavior of pigs in rooms for rearing and fattening was investigated, and the results showed that the urine-fouled floor area was larger for 25% than 50% slatted floors.

TL;DR: In this article, sawdust was used for two different deep-litter systems for fattening pigs (System 1 and 2) and the differences between the systems were the amount of litter per pig, the size of the sawdust particles and the way the bed was treated.

TL;DR: In this article, the results of natural ventilation measurements carried out in a plastic greenhouse with continuous roof and side openings are presented, and the results show a strong dependence of air exchange rate on wind velocity and total ventilator opening area.

TL;DR: In this article, the authors used a dynamic chamber technique and passive diffusion samplers to measure NHr3 emissions individually from 24 pens in an experimental broiler house with a total of about 3600 broiler chickens on litter.

TL;DR: In this article, the influence of wind speed on ventilation rates in a plastic tunnel with continuous side ventilators was investigated in a greenhouse environment, where the injection peak technique using N2O as tracer gas was used to measure air exchange rates.

TL;DR: Simulation results show that spreading site-specifically, simply by changing the mass flow, leads to a fluctuating spreader pattern, which results in large deviations from the intended application rates.

TL;DR: In this paper, a machine vision system was used to collect Red, Green and Blue (RGB) colour features interactively from slide images of the maize plants and evaluated the use of colour image information to characterize stress levels owing to water and nitrogen deficiencies in maize leaves and variations in colour due to normal physiological growth of plants.

TL;DR: In this article, the effect of the cutting edge geometry of tillage implements on tillaged forces, soil failure and soil movement below the tillage depth was studied using 400mm wide experimental sweeps under the controlled conditions of a tillage test track and in the field.

TL;DR: In this article, a method for dynamically determining the applied pressure at the oil-point by precise sensing of the oil (pore) pressure is presented, which permits experimental validation of the hypothesis that the oil point generally occurs at the point where the bed density approaches the kernel density of the constituent seed or material particle.

TL;DR: In this paper, a force prediction model for single and multiple tines at speeds at which inertial effects are signficant is developed for both frictional (laboratory) and cohesive (field) soils.

TL;DR: In this paper, an analysis of the momentum and turbulent kinetic energy conservation equations for a two-dimensional air-jet penetrating a uniform crop canopy from a moving sprayer is presented.

TL;DR: All measures of agreement between sensors lead to the conclusion that fusing sensors is better than using individual sensors.

TL;DR: In this article, pressure drops were measured in clean wheat beds for superficial air velocities up to 0·42 m/s at grain moisture contents in the range of 12·8-22·3% wb.

TL;DR: In this article, an image analysis technique for the identification of apple stems and calyxes was presented, where the analysis was focused on the dark patches of fruit surfaces and the patches were first segmented out by a flooding algorithm.

TL;DR: In this paper, three image analysis methods were studied and evaluated to solve the problem of removing long stems attached to mechanically harvested oranges: colour segmentation based on linear discriminant analysis, contour curvature analysis, and a thinning process which involves iterating until the stem becomes a skeleton.

TL;DR: In this article, an ultrasonic testing technique was applied for non-destructive quality evaluation of avocado fruit and quantitative relations were established between ultrasonic parameters and maturity related factors, such as the attenuation of the ultrasonic signal and the firmness of the fruit with storage time.

TL;DR: In this article, the authors used the laws of mixtures to predict grain kernel and grain bulk volume, respectively, as functions of moisture adsorption or desorption in postharvest processing of these materials.

TL;DR: The use of thin rings is considered as a means of measuring two orthogonal forces and a moment applied in the plane of the ring, with appropriately mounted strain gauge bridges.

TL;DR: In this paper, three-dimensional air velocity characteristics were measured in a full-scale, climate-controlled section of a livestock building with high airflow rate and simulated animal sensible heat.

TL;DR: In this article, the abilities of different bedding materials to reduce the ammonia emission rate from pig manure and for how long they would be efficient were investigated using an ammonia measuring chamber.

TL;DR: In this paper, a machine vision system was designed for automated measurement of the canopy area of tomato seedlings, and an image processing procedure was developed and evaluated to segment seedling canopy from background and root-growth medium parts of the seedling images.

TL;DR: In this article, two methods to reduce the emission of ammonia from cow houses with a partially slatted floor were investigated, one method was based on scraping the slats and subsequent flushing with water every 2h, using 20 l/d per cow (water treatment).

TL;DR: In this paper, a new method for rapid assessment of bruising damage is proposed, which involves dropping fruit from a geometrically increasing series of heights onto a flat steel surface using a pendulum, and counting the number of bruises observed with skin intact.

TL;DR: In this article, a study was conducted to show erosion phenomena and to consider the conservation effects of agricultural land consolidation which is carried out to make field sizes larger, mechanization easier and productivity per unit area higher.