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Third in an agricultural research centennial series: Winning the west… with agricultural engineering Texto completo
1974
R Bainer | M Gagnon
California Agriculture - All Issues
Mostrar más [+] Menos [-]Using sensors & machine learning in an agricultural robot | Using sensors and machine learning in an agricultural robot Texto completo
2019
Jake Shaw-Sutton, senior robotic technician at the University of Plymouth, discusses the GummiArm, a machine-learning, robotic device that has been adapted to, and field-tested in, agricultural settings. The success of the GummiArm lies in its variable configuration, a multitude of sensors, and machine vision; it is also offered as open source and has possibilities as a human prostheses.
Mostrar más [+] Menos [-]The first in an agricultural research centennial series: Hilgard… California's first agricultural researcher Texto completo
1974
C Cass
California Agriculture - All Issues
Mostrar más [+] Menos [-]Fourth in an agricultural research centennial series … Early research in soils and plant nutrition Texto completo
1974
W Schoonover
California Agriculture - All Issues
Mostrar más [+] Menos [-]Potential interaction of soybean-grass intercropping with residual nitrogen for a no-tillage system implementation Texto completo
2023
Karina Batista | Alessandra Aparecida Giacomini | Luciana Gerdes | Waldssimiler Teixeira de Mattos | Ivani Pozar Otsuk
Combinations between crop intercropping and forage production in a no-tillage system are not well established for environments under low water retention and soil fertility conditions. Our study aimed to evaluate the potential interactions between soybean-grass intercropping with residual nitrogen in a no-tillage system. The experimental design was a randomized block with four replications in a subdivided plot scheme. The main plots in the summer season were: 1) soybean monoculture; 2) soybean - Aruana Guinea grass (Megathyrsus maximus cv. Aruana) intercropping, and 3) soybean - Congo grass (Urochloa ruziziensis cv. Comum) intercropping. The subplots were the nitrogen rates of 0, 50, 100, and 150 kg ha-1, applied as side-dressing in maize and grasses during the autumn-winter season. Here, the results of the summer seasons are shown. To do so, the parameters evaluated were soybean agronomic traits, dry biomass production, and macronutrient concentrations of plants intercropped. The main effects and interactions were studied. Our findings showed that soybean-Aruana Guinea grass intercropping is an alternative to no-tillage system implementation. Moreover, residual nitrogen from the autumn-winter season directly interfered with the dry biomass production of grasses intercropped with soybeans in the summer season. In short, the systems studied seem suitable for implementing a no-tillage system, which aims to neutralize degraded pastures and produce forage for ensilage. Despite the changes in macronutrient concentrations within the intercropping system and residual nitrogen, and among intercropped crops over the years, Congo grass intercropped with soybeans in the summer season showed great capacity for phosphorus, potassium, and magnesium cycling.
Mostrar más [+] Menos [-]Location-specific technology transfer model in an agricultural technology park, Indonesia Texto completo
2024
Harmi Andrianyta | Elisa Anggraeni | Sapta Raharja | Sukardi Sukardi
Diversity in the characteristics of agricultural locations has the potential to develop. Unfortunately, the weak transfer of technology based on the characteristics of the location indicates that this potential cannot grow properly. This research aims to synthesise a technology transfer model for an agricultural technology park (ATP) by considering site-specific conditions. This cross-case study was conducted at selected ATP locations. Model synthesis uses the system development life cycle stages of initiation, analysis, and design. The resource-based view approach was broken down into several variables during the analysis stage. Three location-specific technology transfer models were successfully developed: a technology transfer model based on highland specificity, a unique technology transfer model for urban farming, and a tourism village-based model.
Mostrar más [+] Menos [-]Methodological aspects of an improvement of calculation information system in agricultural companies Texto completo
2002
J. Pataky
Methodological aspects of an improvement of calculation information system in agricultural companies Texto completo
2002
J. Pataky
Phenomenalistic data of the development of prime costs in agriculture-oriented companies inSlovakia indicate that they have considerably increased in the main production, intracompany services and the company as a whole. Therefore, the management of a company has to apply an economic approach to cost management. Recommendations to build up a control structure of the cost system in the agricultural primary production are presented and its rational connection with actual costing, which uses algorithms of unconventional calculation methods, is analysed. In the cost system control structure, costs are recommended to be divided in two levels, namely by groups of activities and classification by elements of cost and by the relationship to outputs covering agricultural products. Using a general model, the objectives analysed are implemented in the livestock production aimed at dairy cow breeding.
Mostrar más [+] Menos [-]Methodological aspects of an improvement of calculation information system in agricultural companies
2002
Pataky, J. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
Phenomenalistic data of the development of prime costs in agriculture-oriented companies in Slovakia indicate that they have considerably increased in the main production, intracompany services and the company as a whole. Therefore, the management of a company has to apply an economic approach to cost management. Recommendations to build up a control structure of the cost system in the agricultural primary production are presented and its rational connection with actual costing, which uses algorithms of unconventional calculation methods, is analysed. In the cost system control structure, costs are recommended to be divided in two levels, namely by groups of activities and classification by elements of cost and by the relationship to outputs covering agricultural products. Using a general model, the objectives analysed are implemented in the livestock production aimed at dairy cow breeding.
Mostrar más [+] Menos [-]The overshadow of the human evolvement process in the dynamics of soil drift of an agricultural watershed in Nilgiri Hills, India Texto completo
2021
Ramakrishnan Sangeetha | Neelakanda Pillai Kanniperumal Ambujam
The overshadow of the human evolvement process in the dynamics of soil drift of an agricultural watershed in Nilgiri Hills, India Texto completo
2021
Ramakrishnan Sangeetha | Neelakanda Pillai Kanniperumal Ambujam
The Nilgiri Biosphere, being one of the critical catchments, a small agricultural watershed of Udhagamandalam has been analysed to show the need to improve the agriculture by reducing the soil erosion. For this study, the land use and land cover classification was undertaken using Landsat images to highlight the changes that have occurred between 1981 and 2019. The Revised Universal Soil Loss Equation (RUSLE) method and the Geographic Information System (GIS) was used in this study to determine the soil erosion vulnerability of Sillahalla watershed in the Nilgiri Hills in Tamilnadu. This study will help to promote the economic development of the watershed with proper agricultural planning and erosion management. This study focuses on the estimation of the average annual soil loss and to classify the spatial distribution of the soil loss as a map with the RUSLE method and GIS. To estimate the average annual soil loss of the study area, GIS layers of the RUSLE factors like rainfall erosivity (R), soil erodibility (K), slope length and steepness (LS), cover management (C) and conservation practice (P) were computed in a raster data format. The total soil loss and average annual soil loss of the study area for 1981-1990,1991-2000, 2001-2010, 2011-2019 were found to be 0.2, 0.254, 0.3, 0.35 million t/year and 31.33, 37.78, 46.7, 51.89 t/ha/year, respectively. The soil erosion rate is classified into different classes as per the FAO guidelines and this severity classification map was prepared to identify the vulnerable areas.
Mostrar más [+] Menos [-]The overshadow of the human evolvement process in the dynamics of soil drift of an agricultural watershed in Nilgiri Hills, India Texto completo
2021
Ramakrishnan, Sangeetha | Neelakanda Pillai Kanniperumal, Ambujam
The Nilgiri Biosphere, being one of the critical catchments, a small agricultural watershed of Udhagamandalam has been analysed to show the need to improve the agriculture by reducing the soil erosion. For this study, the land use and land cover classification was undertaken using Landsat images to highlight the changes that have occurred between 1981 and 2019. The Revised Universal Soil Loss Equation (RUSLE) method and the Geographic Information System (GIS) was used in this study to determine the soil erosion vulnerability of Sillahalla watershed in the Nilgiri Hills in Tamilnadu. This study will help to promote the economic development of the watershed with proper agricultural planning and erosion management. This study focuses on the estimation of the average annual soil loss and to classify the spatial distribution of the soil loss as a map with the RUSLE method and GIS. To estimate the average annual soil loss of the study area, GIS layers of the RUSLE factors like rainfall erosivity (R), soil erodibility (K), slope length and steepness (LS), cover management (C) and conservation practice (P) were computed in a raster data format. The total soil loss and average annual soil loss of the study area for 1981–1990,1991–2000, 2001–2010, 2011–2019 were found to be 0.2, 0.254, 0.3, 0.35 million t/year and 31.33, 37.78, 46.7, 51.89 t/ha/year, respectively. The soil erosion rate is classified into different classes as per the FAO guidelines and this severity classification map was prepared to identify the vulnerable areas.
Mostrar más [+] Menos [-]Feeding Behaviour of Eurasian Beavers (Castor fiber) Along Small Streams in an Agricultural Landscape Texto completo
2022
Ondřej Mikulka | Miloslav Homolka | Jakub Drimaj | Jiří Kamler
Feeding Behaviour of Eurasian Beavers (Castor fiber) Along Small Streams in an Agricultural Landscape Texto completo
2022
Ondřej Mikulka | Miloslav Homolka | Jakub Drimaj | Jiří Kamler
In areas with high population density, the Eurasian beaver may be forced to utilise sparsely forested landscapes where living conditions may not be optimal for the species. Here, we examine the feeding strategy of Eurasian beavers along a number of small (mainly) forested streams in the Czech agricultural landscape. Diet availability in these sparsely forested landscapes is characterised by a lack of woody plants but a large supply of herbaceous vegetation, including agricultural crops grown close to the watercourse. The beaver has adapted to such conditions by building dams on low-water streams, allowing it to move between scattered diet resources. In winter, the main dietary component was woody plants (70% V), with species normally neglected in optimal sites (e.g. Acer negundo, Prunus spp.) taken in the absence of more favoured species (e.g. Salix spp., Populus spp.), the remaining 30%V consisting of herbaceous vegetation. In summer, however, the main component in the diet was herbaceous vegetation (90% F), which included agricultural crops (56% V). Where there were not enough trees, the beaver tended to leave its summer territory and move to stretches with denser tree stands. Thus, beavers in sparsely forested agricultural landscapes have adapted by utilising the diverse supply of herbaceous vegetation, though its continued presence in the landscape is still primarily dependent on sufficient stocks of woody plants, which the beaver needs to survive winter.
Mostrar más [+] Menos [-]Feeding Behaviour of Eurasian Beavers (Castor fiber) Along Small Streams in an Agricultural Landscape Texto completo
2022
Mikulka, Ondrej | Homolka, Miloslav | Drimaj, Jakub et al.
In areas with high population density, the Eurasian beaver may be forced to utilise sparsely forested landscapes where living conditions may not be optimal for the species. Here, we examine the feeding strategy of Eurasian beavers along a number of small (mainly) forested streams in the Czech agricultural landscape. Diet availability in these sparsely forested landscapes is characterised by a lack of woody plants but a large supply of herbaceous vegetation, including agricultural crops grown close to the watercourse. The beaver has adapted to such conditions by building dams on low-water streams, allowing it to move between scattered diet resources. In winter, the main dietary component was woody plants (70% V), with species normally neglected in optimal sites (e.g. Acer negundo, Prunus spp.) taken in the absence of more favoured species (e.g. Salix spp., Populus spp.), the remaining 30%V consisting of herbaceous vegetation. In summer, however, the main component in the diet was herbaceous vegetation (90% F), which included agricultural crops (56% V). Where there were not enough trees, the beaver tended to leave its summer territory and move to stretches with denser tree stands. Thus, beavers in sparsely forested agricultural landscapes have adapted by utilising the diverse supply of herbaceous vegetation, though its continued presence in the landscape is still primarily dependent on sufficient stocks of woody plants, which the beaver needs to survive winter.
Mostrar más [+] Menos [-]An Overview of Agricultural Pollution in Vietnam : The Aquaculture Sector Texto completo
2017
Cong, Nguyen Van
Aquaculture is an important and growing part of Vietnam’s agricultural economy. The aquaculture industry’s expansion has, however, contributed to environmental degradation and become a potential threat to the industry’s sustainability. Aquaculture expansion has involved the conversion of large areas, including mangroves, to farms and ponds, leading to changes in ecosystems and land use. In addition, aquaculture practices generate an array of emissions, most of them carried in wastewater and solid waste. This report is meant to provide a broad national overview of pollution problems in the aquaculture subsector. It aims to describe the nature, magnitude, and drivers of aquaculture pollution problems, taking stock of the state of evidence on this topic. It also touches upon current responses to the problem and offers a number of directions for policymakers.
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