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Physical Sciences and Mathematics Commons™
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- Environmental Sciences (235)
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- Sustainability (111)
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Articles 331 - 343 of 343
Full-Text Articles in Physical Sciences and Mathematics
Sunrise And Sunset Times For March-April, 1953
Sunrise And Sunset Times For March-April, 1953
Journal of the Department of Agriculture, Western Australia, Series 3
State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear earlier.
[Supplied by the Government Astronomer]
The Regeneration And Maintenance Of Wimmera Ryegrass Pastures Under Saline Soil Condition, F L. Shier
The Regeneration And Maintenance Of Wimmera Ryegrass Pastures Under Saline Soil Condition, F L. Shier
Journal of the Department of Agriculture, Western Australia, Series 3
Over the past ten years, Wimmera ryegrass pastures at the Salmon Gums Re- VJ search Station have been improved and maintained by periodic cultivation of the soil even without applications of superphosphate. On heavy crab-holey soil affected by high salt content and unsatisfactory for wheat growing, cultivation treatments have produced remarkably uniform stands of Wimmera ryegrass as shown in the accompanying pictures. The bare patches due to salt, have been largely eliminated. If the interval between cultivations is more than three years Wimmera pastures deteriorate badly.
Sunrise And Sunset Tables Times For Jan.-Feb., 1953
Sunrise And Sunset Tables Times For Jan.-Feb., 1953
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …
Soil Conservation Service - Basis Of Co-Operation, G H. Burvill
Soil Conservation Service - Basis Of Co-Operation, G H. Burvill
Journal of the Department of Agriculture, Western Australia, Series 3
The Soil Conservation Service has been established as provided in the Soil Conservation Act, 1945. To carry out its objectives will require the co-operation with it of individual farmers and landholders. The policy of the Service is therefore to encourage farmers to help themselves, and particularly to encourage them to recognise the need for soil conservation methods and for soil erosion control in the early stages. More particularly, the Service aims to provide, through its trained staff, technical asistance in the way of agricultural advice, research, conservation, planning, layouts and surveys. As indicated below, under the heading "Charges for Soil …
The Hose U-Tube Level, J P. Fallon
The Hose U-Tube Level, J P. Fallon
Journal of the Department of Agriculture, Western Australia, Series 3
With the growing use of soil conservation practices throughout the farming areas, there has been an increasing demand for a simple levelling device that will enable farmers to take their own levels. When they have become familiar with the use of pasture furrows, contour banks and the various other mechanical erosion control measures, farmers with the aid of such an instrument would be able to make an immediate start on an erosion control programme. The instrument would also prove useful for numerous small jobs around the farm when accurate levels are required. Tests have shown the "Hose U-Tube Level" here …
Soil-Saving Schools
Journal of the Department of Agriculture, Western Australia, Series 3
Save the soil for your sons and grandsons," or "Every farmer his own soil conservationist" might well serve as slogans for the recently-inaugurated farmers' schools organised in this State by the Soil Conservation Service. Judging by the enthusiasm shown by pupils at the first two schools, held in August last, this highly practical approach to an important subject seems destined to usher in an entirely new conception of soil conservation work as it affects the individual land-owner.
Sunrise And Sunset Tables
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …
Soil Conservation Farming
Journal of the Department of Agriculture, Western Australia, Series 3
A list of farmers known to be using contour practices for soil conservation, is printed at the end of this note. It will enable other interested farmers to find and see something of such methods. Now is considered an appropriate time to publish this list as many farmers will shortly be travelling through the countryside to agricultural shows and field days.
Sunrise And Sunset Times For Sept.-Oct., 1952
Sunrise And Sunset Times For Sept.-Oct., 1952
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun s disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would …
Sunrise And Sunset Times For July - Aug., 1952
Sunrise And Sunset Times For July - Aug., 1952
Journal of the Department of Agriculture, Western Australia, Series 3
(Supplied by the Government Astronomer)
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on …
Dams On The Hillsides
Journal of the Department of Agriculture, Western Australia, Series 3
A reader of the "Journal of Agriculture" recently wrote to the Commissioner of Soil Conservation concerning the current tendency towards sinking dams on hillsides. He stated that many farmers and contractors were throwing up holding banks in such a manner that a large percentage of the water impounded was lost by seepage under the banks.
Water Erosion Control, L C. Lightfoot
Water Erosion Control, L C. Lightfoot
Journal of the Department of Agriculture, Western Australia, Series 3
Although soil erosion caused by water action is common in our agricultural areas, effective erosion control measures, likely to pay for themselves quickly, can be applied in nearly every case. Plant cover above the soil surface, and fertile soil with good structures are the main factors which enable soils to resist erosion. Dense pasture gives the best cover and at the same time improves the fertility and structure of the soil both effectively and economically, so land management adjusted to the need and capability of soils, slopes and climate is of first importance. Contour practices are of secondary value and …
Sunrise And Sunset Times For May-June, 1952
Sunrise And Sunset Times For May-June, 1952
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …