Varieties
in sentence
189 examples of Varieties in a sentence
Examples include a five-year-long moratorium on approvals of GM plants throughout Europe, and the rejection of badly needed food aid by several African countries--only because it contains the same GM
varieties
of grain consumed routinely in North America.
The start of this turnaround could be associated with the other two trends, as the cumulative result of more favorable policies and increased labor per hectare, but it could also reflect the gradual spread of improved crop
varieties
that resulted from earlier investment in agricultural technology.
But it is true that no other country matches India’s extraordinary mix of ethnic groups, profusion of mutually incomprehensible languages,
varieties
of topography and climate, diversity of religions and cultural practices, and disparate levels of economic development.
Touring the Mwandama Village, I saw the potential of modern technologies – smart phones and mobile broadband, improved seed varieties, the latest in drip irrigation, modern diagnostic tests for malaria, and low-cost solar-energy grids – to advance human well-being in ways that simply were not feasible even a few years ago.
The doves today, in all their varieties, must fight for one goal: stopping Israel’s slow transformation into a binational state, which would be a disaster for both sides.
Even with research and development hampered by resistance from activists and excessive government regulation, drought-resistant GE crop
varieties
are emerging from the development pipeline in many parts of the world.
Over the last two decades, such crop
varieties
have been cultivated on more than 1.5 billion hectares by more than 17 million farmers in some 30 countries – without disrupting a single ecosystem or causing so much as a stomachache.
Worldwide, these new
varieties
have provided “very significant net economic benefits at the farm level, amounting to $18.8 billion in 2012 and $116.6 billion” from 1996 to 2012, according to a recent report by Landes Bioscience.
Most of these new crop
varieties
are designed to resist herbicides, so that farmers can adopt more environmentally friendly, no-till cultivation practices, and many have also been engineered to resist pests and diseases that ravage crops.
But, in the long term, the greatest boon of all, for both food security and the environment, will likely be the ability of new crop
varieties
to tolerate periods of drought and other water-related stresses.
To develop such varieties, plant biologists identified genes that regulate water use and transferred them into important crop plants, enabling them to grow with less or lower-quality water, such as water that has been recycled or is high in natural mineral salts.
Other types of GE crop varieties, such as those that are disease- and pest-resistant, indirectly improve the efficiency of water use.
Even where GE crops are being cultivated, unscientific, excessively burdensome regulation has raised the cost of producing new plant
varieties
significantly, keeping many potentially important ones from the market.
They permit the largely unregulated use of new
varieties
of plants and microorganisms that have been crafted with less precise and predictable techniques, under the pretense that they are somehow more “natural,” while stringently regulating – or even banning – those based on the most advanced knowledge and methods.
But if they do not, the Fed’s continued interest-rate hikes would stimulate investors to trade their German and Japanese bonds, in particular – which are now bringing low and even negative returns – for higher-yielding US
varieties.
Look for new global cooperative approaches to clean energy systems, medicines and vaccines, improved techniques for fish farming, drought-and-temperature resistant crop varieties, high-mileage automobiles, and low-cost irrigation techniques.
Organic practices afford limited pesticide options, create difficulties in meeting peak fertilizer demand, and rule out access to genetically engineered
varieties.
Starved for ScienceAMSTERDAM – In the Mekong Delta, farmers obtain 6-7 tons of rice per hectare in dry seasons and 4-5 tons per hectare in wet seasons, using fast-maturing rice
varieties
that allow up to three consecutive yields annually.
Indeed, the proliferation of agricultural technology – from more efficient machinery to higher-yielding or more robust crop
varieties
– has the potential to narrow the productivity gap considerably, even if differences between climates and producers remain.
If the concept of “viral sovereignty” had been applied to HIV 25 years ago, we would not have central repositories of thousands of
varieties
of HIV today; these allow scientists to test drugs and vaccines against all the different strains of the virus that causes AIDS.
They described new high-yield rice varieties, which they are prepared to share with their African counterparts.
By comparison, replacing blighted coffee trees with rust-resistant
varieties
would cost an estimated $1 billion.
Iraq’s marshlands have been restored, and local wheat
varieties
in Jordan and Syria have been preserved.
That innovation is “Golden Rice,” a collection of new rice
varieties
that is bio-fortified, or enriched, by genes that express beta-carotene, the precursor of vitamin A, which is converted in the body, as needed, to the active form.
That applies even to the numerous new plant
varieties
that have resulted from “wide crosses,” hybridizations that move genes from one species or genus to another – across what used to be considered natural breeding boundaries.
But experts are increasingly concerned about the potential for pandemics caused by bacteria resistant to all current antibiotics, while our intellectual-property system is failing to create adequate incentives for the development of new
varieties.
The key will be for the new government to provide a sound framework which combines key public investments – roads, power, soil nutrients, improved seed varieties, public health, safe water – with confidence-building outreach to the business community and fruitful relations with the US and other donor countries.
A second lesson of recent events in Iran and Turkey is that the spectrum of government in the Middle East and North Africa runs from autocracy and theocracy to
varieties
of managed democracy.
LONDON – In the 1960’s, the Green Revolution – which included the development of high-yielding crop varieties, the expansion of irrigation infrastructure, and the distribution of modern fertilizers and pesticides to developing-country farmers – bolstered agricultural production worldwide.
Despite some resemblances, she believes that the different
varieties
of left-wing populism around the world “need to be apprehended according to their various contexts.”
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