Archives

Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 01 December 2010
Bananas are a staple food for 400 million people, grown in 130 countries. Banana plantations are often fragile environments where paraquat plays an important role extending beyond weed control. The UN Food and Agriculture Organisation ranks bananas as the world’s fourth most important crop after the major cereals. Bananas provide energy, are fat-free and rich in potassium and vitamins.
Banana plantations can be fragile environments in which soil, water and biodiversity all need special care. Weeds, pests and diseases flourish in...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Friday, 05 November 2010
“Time and tide wait for no man”, so they say. Rice farmers living in coastal areas of South Sumatra, and Central and East Kalimantan in Indonesia know this only too well. Their paddy fields are flooded by river water pushed back up the deltas by each incoming tide. Preparing the land is especially difficult. Not only do weeds grow incredibly vigorously under the swampy conditions, but plowing the land too deeply can result in crop failure. Although the high organic matter topsoil is fertile, below lies a yellow layer of toxic...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Tuesday, 12 October 2010
Visit the new Benefits section of the Paraquat Information Center to see how using paraquat for weed contol brings benefits on the farm, for the environment and in rural communities.
Paraquat has been a valuable tool for farmers all over the world for nearly 50 years. Its speed of action, rainfastness and now its role as a weed resistance fighter are unsurpassed. Paraquat is also unique as a non-selective herbicide in being able to be sprayed between the rows of growing crops without fear of crop damage.
However, paraquat’s...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 08 September 2010
Australian researchers have found that spraying paraquat in a ‘Double Knock’ system is a very effective way to restrict the evolution of glyphosate resistant weeds. Survivors of glyphosate burndown are sprayed with paraquat up to two weeks later. The Double Knock ensures that weeds are hit with two different modes of action.
The Double Knock system has been modified over the years, with different options being developed, but each retains the principle of diversity in weed control.  It was pioneered when paraquat was...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Thursday, 29 July 2010
Paraquat in Samoa is not only helping farmers to provide a staple food but is also enabling taro to become a very important export crop.  Ever wonder what fuels the impressive size and power of the awesome Pacific Island rugby players? Look no further than taro. Taro is a tropical starchy root crop which is a staple food in many subsistence communities, particularly in the Pacific islands. And while the rugby team members most likely have a broad selection of meals from which to choose, for many people living in these areas taro is an...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Friday, 02 July 2010
Biodiversity is being encouraged by the adoption of conservation tillage practices, especially no-till farming. Spraying with a non-selective herbicide like paraquat means that weeds can be controlled without the need to plow.
Birds, in particular, are benefiting when fields are not plowed or only lightly cultivated in conservation tillage systems. Leaving stubble and chaff from the previous crop on the soil surface, and undisturbed no-till soil, provides habitats for invertebrates and small wildlife. Whether bird species feed on...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Tuesday, 08 June 2010
Farmers in the US have been aware for some time of the threat glyphosate resistant weeds pose to their crops and livelihoods. Now, the public is becoming more aware too after recent media attention following the publication of the US National Research Council’s report: Impact of Genetically Engineered Crops on Farm Sustainability in the United States1. The report confirmed the substantial economic and environmental benefits of GM crops, but warned that care was needed to preserve the value of the technology, especially...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Friday, 21 May 2010
Farmers in the mountains of Vietnam can plant maize crops more than two weeks early by using paraquat in a conservation tillage system. Timely operations are essential in growing all crops and paraquat’s unprecedented speed of action is often a huge help to farmers up against the weather or looking for earlier harvests to get the best prices.
Results of research conducted by The Northern Mountainous Agriculture and Forestry Science Institute (NOMAFSI) show that using paraquat for weed control increased maize yields by more than...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 21 April 2010
A paraquat-based herbicide has become an essential land preparation tool for Brazilian farmers to stem the spread of glyphosate resistant weeds.
The extensive adoption of GM soybean varieties tolerant to glyphosate has led to farmers using this non-selective herbicide for weed control too much and too often. Although glyphosate is encouraging the continued adoption of no-till, with all the benefits to soil conservation that brings, excessive use is also encouraging glyphosate resistant weeds1. Up to three million hectares in...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 07 April 2010
Soybean growers in Brazil are facing a dilemma. More land under no-till is saving its soil and reducing energy use, but many no-till farmers are now finding that glyphosate resistant weeds are threatening future success.
No-till cropping systems have now been adopted on around 70% of cultivated land in the country, particularly for soybeans. Brazil and the US lead the world in no-till farming, but this is threatened by the rise of glyphosate resistant weeds. A recent article highlighted how worried American farmers are becoming (read...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 03 March 2010
In Brazil, paraquat is helping farmers to harvest more sugarcane, more efficiently. The fast and thorough desiccation achieved by paraquat means faster harvesting, more profitable cropping and less environmental impact.
Production of sugarcane in Brazil has doubled in the past decade and is forecast to double again in the next1,2. As a biofuel feedstock sugarcane is attractive because of its high net energy gain. However, its impact on the environment and opportunities for food production are under scrutiny. Minimizing...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Thursday, 11 February 2010
In the Philippines, more successful results from a project using paraquat to control weeds and prevent soil erosion have been announced. Since 2005, researchers from several universities and other organisations have been collaborating to study approaches to reducing the serious threat posed by soil erosion to food production and the environment.
Professor Gil Magsino from the University of the Philippines presented the results and conclusions from the Sagip-Lupa project’s 4th Annual Report at the University of Benguet...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 27 January 2010
Sugarcane production in Brazil has almost doubled in the past decade. This has resulted from a 40% increase in the area cropped and from average yields which have increased by over 12% driven by the demand for sugar from food manufacturers and as the biofuel feedstock with the best net energy gain and lowest carbon footprint.
Predictions of ethanol production from sugarcane in Brazil in 2020 made by UNICA (União da Indústria de Cana-de-Açúcar) show a more than trebling in output from a crop area increasing...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 23 December 2009
The first weed species to develop resistance to the non-selective herbicide glufosinate has been recorded by researchers in Malaysia.
Preliminary experiments have confirmed concerns that an aggressive grass weed is developing populations which are no longer controlled by glufosinate.
Weed scientists from the University of Malaya have been investigating reports of weed control problems in an oil palm nursery in the state of Pahang. The weed in question is goosegrass (Eleusine indica), a globally important weed of many warm climate...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Thursday, 10 December 2009
Conservation tillage techniques have rapidly become popular ways of preparing fields for cropping because of their many environmental and economic benefits. Non-selective herbicides like paraquat are essential components of conservation tillage because fields are not plowed to bury weeds, and desiccated vegetation, stover and stubble provide a protective cover to the soil. This helps to minimise erosion, provides habitats for beneficial insects and other wildlife, and undisturbed soil builds higher levels of organic matter, key to good soil...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Tuesday, 24 November 2009
Weeds do not hit the headlines like droughts, insect plagues or even swine flu, but cause substantial human misery, quietly and constantly, notes one of the UN Food and Agriculture Organisation’s (FAO) most renowned weed experts. Ricardo Labrada-Romero quotes figures produced by leading environmental organisation Landcare Research (New Zealand) which indicate that uncontrolled weeds cause crop losses equivalent to 380 million tonnes of wheat every year. When FAO reckon that more than one billion people in the world are hungry, this has...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 14 October 2009

No-till crop production using paraquat for weed control is enabling the successful cultivation of one of China’s last available soil resources for food production.
China has 7% of the world’s arable land but has to feed more than 20% of the world’s population. In Southern China red soils account for one fifth of the country's land area where 480 million people live.
At present, nearly 30 million hectares of red soils have been cultivated, but they are highly weathered, inherently infertile and very...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 30 September 2009
This season has seen a redoubling of efforts to fight the spread of glyphosate resistant Palmer amaranth (Amaranthus palmeri) in US crops. The key to resistance management is to use herbicides which have different modes of action. When it comes to achieving a broad-spectrum effect like glyphosate, the choice of alternatives is extremely limited. Paraquat’s unique mode of action1 together with its broad-spectrum weed control and fast action, make it an invaluable tool in the fight against weed resistance to glyphosate.
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Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Wednesday, 16 September 2009
Knowing how a herbicide works in detail - its 'mode of action' (MOA) - is important to understanding how to use it most effectively. Herbicide MOA is a major factor in weed control spectrum, crop selectivity and weed resistance.
Herbicides control weeds by interfering with how they grow. Different MOAs all ultimately either stop seeds from germinating or establishing as seedlings; prevent plants from making essential carbohydrates, proteins or lipids (oils and fats); or desiccate leaves and stems.
Paraquat’s MOA involves...
Paraquat herbicide for non-selective weed control in no-till and other sustainable agriculture systems
Monday, 06 July 2009
The Paraquat Information Center has been completely redeveloped to make it easier to find information, not only about paraquat, but also about the huge variety of cropping systems around the world in which paraquat is one of farmers' most essential tools.
Here is a quick guide to finding your way around.
Use the top navigation bar to browse the main sections of the site:
News & Features contains topical articles about paraquat and how it is being used to increase agricultural...