Sentences with phrase «per hectare»

The dry bottom is becoming a desert, the site of sand storms that may drop up to half a ton per hectare of a mixture of sand and salt on the surrounding fields to damage the cotton crops.

Carbon Emissions Could Increase Still if Remaining Unprotected Areas Cleared They also found that in the the remaining unprotected forests in the region the amount of carbon stored in the biomass is higher still — 231 metric tons per hectare in these areas, versus 183 - 201 metric tons in the areas cleared in 2001 - 2007.

The trees in the fields, meanwhile, could absorb 10.87 tons of carbon per hectare per year.

They found that when thale cress and lettuce plants were subjected to increasing amounts of biochar mixed with soil, using the equivalent of up to 50 tonnes per hectare per year, if applied in the field, plant growth was stimulated by over 100 percent.

«For horticulture, grapes had the highest gross value of production, while almonds were the most profitable per tonne produced, and potatoes had the highest yield per hectare in 2015 - 16,» he said.

While smaller scale producers might stick to 1,500 birds per hectare as the recommended maximum, large scale producers are keeping their hens at much higher densities to cash in on the growing market for free range products.

This is entirely in contrast to consumers» expectations for free range eggs and the CSIRO's Model Code of Practice, which says there should be a maximum of 1500 hens per hectare on an outdoor range.

• According to the analysis, a coral reef with no fishing averages 1,000 kilograms per hectare of fish biomass.

The page indicates that there are about 75 large trees per hectare which add to the leaf litter of the coffee plants, and there is a photo of coffee growing under shade in their photo gallery.

The standard calls for at least 12 native tree species per hectare for certified farms, so there are either certified farms in this sample that are not meeting that criteria, or there is error in the farmer reporting.

The differences are much larger for individual states, which you can see in the maps below, These show the difference in tonnes of crop per hectare in warm Arctic years compared to cold years.

«12 different native tree species» is not the same as «minimum 12 native tree species per hectare on average.»

They expected to increase yields per hectare by 30 %.

In contrast, the grasses and other flowers and plants that grow naturally when such lands are left fallow — species such as goldenrod, frost aster, and couch grass, among others — can deliver roughly the same amount of biofuel energy per hectare per year if fertilized, yet also reducing CO2 by more than twice as much as corn.

The company, which banks with National Australia Bank, saw its average yield for irrigated cotton reach 15.10 bales per hectare with an average price of $ 574 per bale including seed.

Haas and Köpke (1994) calculated the CO2 emissions of German organic farms to be 0.5 tonnes of CO2 per hectare whereas in conventional agriculture the amount was 1,3 tons, a difference of 60 percent (Table 5).

Just over two per cent of all agricultural land in Thailand is given over to palm oil production, which equates to approximately 17.49 tonnes of palm oil per hectare of land per year.

They may be trickier than trees for environmental protesters to chain themselves to, but it turns out that seagrass ecosystems hold as much carbon per hectare as the world's forests — and are now among its most threatened ecosystems.

«Because they tend to use more labour, grow a wider range of crops and work the land more carefully, small farmers, as a rule, grow more food per hectare than large ones.

As a result of all these changes to the plant's form, the variety promises yields of up to 13 tonnes of grain per hectare under the best conditions, says Kenneth Fischer, the IRRI's deputy director - general for research.

Table 1: Nitrate leaching rates per hectare from organic agriculture compared to conventional agriculture systems

Only 136 kg of pesticides used per hectare of land, with a corresponding 2.6 % of species threatened.

According to him, Osun is the highest producer of cassava in Nigeria but even as that, the state produces just 16 metric tons per hectare which is far from expectation.

The paper attests that coastal habitats — such as mangroves, sea grasses, and salt marshes — sequester as much as 50 times the amount of carbon in their soil per hectare as tropical forest.

The researchers also calculated the average annual cost of — and income from — forest production per hectare across different types of forests.

A new report states that boreal forests store nearly twice as much carbon as tropical forests per hectare: a fact which researchers say should make the conservation of boreal forests as important as tropical in climate change negotiations.

It shows that under western European conditions nitrate leaching rates per hectare are significantly lower in organic agriculture than in conventional agriculture systems.

In an earlier study, he and his colleagues found that Chinese farmers use an average of around 600 kilograms of nitrogen fertilizers per hectare per year, but that could be cut by up to two - thirds without affecting crop yields.

$ 464 estimated median value (mid-range) of the economic value per hectare per year of nature's regulation of climate

Yields per hectare measure the productivity of land and the efficiency of land use.

A study found that of the 3,300 tons of carbon per hectare stored in Indonesia's coastal peatland areas, up to half would be released into the atmosphere over the 100 years following conversion to oil palm plantations — the equivalent of 2,800 years» worth of accumulated carbon.

«The recently released drought - tolerant rice variety, NSIC Rc282, yielded up to 7.9 tons per hectare during the 2016 dry season in an on - farm trial in Cuyapon, Nueva Ecija,» said Dr. Aurora Corales, supervising science research specialist at PhilRice.

• Coral reefs that maintained 500 kilograms of fish biomass per hectare (about 50 percent of an average reef's carrying capacity) were found to maintain ecological functions while sustaining local fisheries, providing fishers and marine managers with a critical target.

The assumed carbon sequestration rate is reportedly based on a weighted average of the annual increment of merchantable timber per hectare in a sample of existing forest biomes.

There was a rapid reduction in biodiversity up to a logging intensity of around 10 -20 m3 of timber removal per hectare after which it flattened.

The fact that organic agriculture systems also absorb and retain significant amounts of carbon in the soil has implications for global warming, Pimentel said, pointing out that soil carbon in the organic systems increased by 15 to 28 percent, the equivalent of taking about 3,500 pounds of carbon dioxide per hectare out of the air.

And interestingly applying 2,535 kg of pesticide per hectare of land, while having 8.5 % of its known species (birds, mammals and reptiles) considered «threatened.»

Analyzing deforestation data from 2001 through 2007, a team of researchers from the Carnegie Institution's Department of Global Ecology at Stanford University found the aboveground biomass lost per unit of forest cleared increased from 183 to 201 metric tons per hectare over the period, largely the result of moving from drier «transition» forests in the southern Amazon to wetter «rainforests» closer to the heart of the basin.

The Accenture study assumes that smart agriculture will deliver a 900 kg crop yield increase per hectare in the coming 15 years.

Supermarket giant Coles brand free range eggs allow for 10,000 birds per hectare with each bird allowed «at least a square metre of space» outside and «minimum perching space» inside the sheds.

However, the survey results were not published on the corporation's website until last month, after a follow - up survey in May had recorded the far more favourable result of 84 per cent support for the 20,000 hens per hectare density limit.

«This means farmers are now harvesting more rice per hectare, which not only lifts them out of poverty, but it is contributing towards the world - wide challenge of feeding the estimated global population of 9 billion people in 2050,» said Australian Minister for Foreign Affairs Kevin Rudd.

German researchers claim that it can yield 30 tonnes of dry matter per hectare per year.

CO2 emissions per hectare of organic agriculture systems are 48 to 66 percent lower than in conventional systems.

The latest finding from these researchers suggests that the birds are returning the favor to farmers by eating an aggressive coffee bean pest, the borer beetle, thereby improving coffee bean yields by hundreds of dollars per hectare.