Horticulture Articles
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Oxidative damage and antioxidant response of Allium cepa meristematic and elongation cells exposed to metronidazole
The toxicity of metronidazole (MTZ) in meristematic and elongation zones of Allium cepa roots was analyzed for 30 h of exposition. Toxic effects were evaluated by lipid peroxidation (content of thiobarbituric‐reactive substances [TBARS]), reduced glutathione (GSH) levels, ascorbate acid and dehydroascorbate acid content, and enzymatic activities of superoxide dismutase and catalase. The root ...
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How Much Will it Cost to Save Our Economy’s Foundation?
During the past two summers, Pakistan was hit with catastrophic floods. The record flooding in the late summer of 2010 was the most devastating natural disaster in Pakistan’s history. The media coverage reported torrential rains as the cause, but there is much more to the story. When Pakistan was created in 1947, some 30 percent of the landscape was covered by forests. Now it is 4 percent. ...
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How to create resilient agriculture
Durable food security and agricultural growth depend on development strategies with resilience built in from the start, says Gordon Conway. Economic growth with resilience to environmental threats will be central to the agenda of the UN Conference on Sustainable Development (Rio+20) in June this year, which aims to map out a pathway of sustainable development for the planet. The 'zero draft', ...
By SciDev.Net
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Reuse: Agriculture
Agronomic and water quality considerations Water use for agricultural irrigation is the largest component of water use in most countries and is more than 70% of human water use in drier countries. Use of recycled water for irrigation requires consideration of soil types, groundwater levels, soil and water chemistry, nutrient loads, limits on chemicals, the salt tolerance of crops, the ...
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Mangroves for Coastal Resilience
Coastal wetlands such as mangrove forests strongly contribute to the safety, food security and income of tens of millions of people throughout the tropics. Wetlands International has helped to restore and conserve thousands of hectares of mangrove forests, closely working with coastal communities. We aim to increase coastal resilience and reduce disaster risk by championing and enabling ...
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Quantifying vapor drift of dicamba herbicides applied to soybean
Recent advances in biotechnology have produced cultivars of corn, soybean, and cotton resistant to the synthetic‐auxin herbicide dicamba. This technology will allow dicamba herbicides to be applied in new crops, at new periods in the growing season, and over greatly expanded areas, including postemergence applications in soybean. From past and current use in corn and small grains, dicamba vapor ...
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Scalewatcher Banishes Limescale In Gardens And Greenhouses
In hard water areas, automated watering systems, sprinkler irrigation systems and greenhouse-misting systems clog with limescale, plant leaves develop white scale deposits and over-spray causes limescale build-up on greenhouse windows. Scalewatcher North America, manufacturers of the original, patented and award-winning computerized electronic water-conditioner, Scalewatcher®, has a range of ...
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Indonesia`s moratorium on new forest concessions: Key findings and next steps
The Indonesian moratorium on the award of new licenses in primary natural forests and peat lands, announced in May 2011, is an important step for improving management of forest resources by “pausing” business-as-usual and allowing time to implement reforms. To quantify the moratorium’s coverage, exemptions, encroachments, and additionality (i.e., whether the moratorium extends ...
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Pacific fisheries need tech to track climate impact
Climate change could benefit some Pacific fisheries, but tracking the success of adaptation needs effective monitoring, says Johann Bell. Climate change could derail plans by Pacific Island countries and territories (PICTs) to use fisheries and aquaculture to foster economic development and food security. Bottom-dwelling coastal fish are expected to be hardest hit. Under continued high ...
By SciDev.Net
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Crops flourish with Scalewatcher
Water is an essential component of horticulture and agriculture whether it is used for irrigating field-scale vegetables, nursery stock, flowers or fruit. Where water contains high degrees of calcium, magnesium and sodium, it can cause nutrient deficiency in plants and crops resulting in stunted growth and poor yields. Calcium also blocks irrigation systems and boilers in heated greenhouses, ...
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SRS Crisafulli`s Rugged Roots in Montana
SRS Crisafulli's Rugged Roots in Montana SRS Crisafulli's employees are a mix of deep rooted Montanan families, returned children and transplants. It seems those who find themselves here share common goals and values, whether it is access to fresh air and wide open landscapes or taking advantage of a current employment boom. Everyone here also values hard work, the rugged environment, and ...
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Quantitative risk assessment of acquiring listeriosis from consumption of minimally processed vegetables
Listeriosis is a serious invasive disease with high fatality rates especially among the vulnerable population. Although the causative pathogen had been detected in several foods in Malaysia, there have so far been no reported cases of listeriosis in Malaysia. The aim of this study was to carry out a quantitative risk assessment to estimate the risk of acquiring listeriosis through the consumption ...
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Vitamin A content of traditional leafy vegetables consumed by the Luo people of western Kenya
Vitamin A deficiency (VAD) causes numerous health problems in developing countries, including the subSaharan Africa. VAD is one of the major causes of morbidity and mortality in children, and also affects lactating mothers and the elderly. The main objectives of the study were to identify, collect and analyse traditional, leafy vegetables for provitamin A carotenoids and tocopherols. A total of ...
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Obtention of plant peroxidase and its potential for the decolorization of the reactive dye Remazol Turquoise G 133%
Peroxidases can be used in the decolorization process. There is a growing interest for new sources of this enzyme and for obtaining economically viable processes. In this work, a low-cost vegetable peroxidase extraction process is proposed; the resulting enzyme is characterized to determine its optimum pH, temperature, and stability conditions, and it is then applied in the decolorization of ...
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Use of nuclear techniques in the study of the behaviour of rare earth elements on the use of phosphogypsum in Cerrado agriculture
Phosphogypsum (PG) is a by-product of phosphoric acid industry. In Brazil, this material has been used as a conditioner for soils with high levels of aluminium. Taking into account the presence of radionuclides and Rare Earth Elements (REEs) in this material, a research project has been conducted in order to investigate the impact of using PG in crops cultivated in Cerrado soils. For this purpose ...
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Soil water reserve estimation and vegetation relationships in a Mediterranean sub-humid forested catchment
A simple water balance model was used to calculate soil water reserve in a Mediterranean forested catchment. The relationship between soil water reserve and leaf water potential and stem water content was analysed. The usefulness of these variables as plant water status indicators was tested. The analyses were developed with a seven-year-long database (2001–2007) in the case of soil water content ...
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Potential impacts of on-site greywater reuse in landscape irrigation
This study investigated the effects of irrigation with different types of waters on soil, plants, and public health. The test plant was ryegrass grown in 12 planters filled with sandy loam soil and irrigated with three types of waters (4 planters for each type): freshwater, raw domestic light greywater (GW), and treated domestic light GW. The sodium adsorption ratio (SAR), EC, pH and alkalinity ...
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Assessing vegetation response to drought in the Laohahe catchment, North China
In order to better understand the relationship between vegetation vigour and moisture availability, a correlation analysis based on different vegetation types was conducted between time series of monthly Normalized Difference Vegetation Index (NDVI) and Palmer Drought Severity Index (PDSI) during the growing season from April to October within the Laohahe catchment. It was found that NDVI had ...
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Seasonal ammonia losses from spray-irrigation with secondary-treated recycled water
This work examines ammonia volatilization associated with agricultural irrigation employing recycled water. Effluent from a secondary wastewater treatment plant was applied using a center pivot irrigation system on a 12 ha agricultural site in Palmdale, California. Irrigation water was captured in shallow pans and ammonia concentrations were quantified in four seasonal events. The average ammonia ...
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PEWE Dayton Meat Case Study
Pacific Natural Foods of Tualatin is known for soymilk, vegetable soups, free-range chicken broth and dairy as well as running its own meat processing plant- Dayton Natural Meats. It is primarily a red meat plant, and its poultry line, added in 2009, primarily produces chicken for soups. The facility is run to organic standards and built to a mid-sized, state-of-the-art processing facility. As a ...
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