Sentences with phrase «higher plant populations»

Corn hybrids with improved tolerance to crowding stress, grown at higher plant populations than their predecessors, have been a driver of rising field corn yields in recent decades.

According to one recent study, «These changes in stress tolerance are likely the by - product of plant breeders selecting for yield at high plant populations and over a wide range of growing environments.»

Not exact matches

Entergy, the plant's owner, has a history of quickly responding to charges the facility isn't safe or would endanger the high - density population that lives within meltdown range.

In Baptist High School, Iwo, for example, where the hijab crisis was planted and nurtured to death, well over 60 per cent of the student population is Muslim.

Even though many have El Niño response plans, the risks have grown thanks to population increases and crops being planted in high - risk zones.

At least 14 of 600 employees who'd been at the plant for more than 10 years had developed prostate cancer — a rate nine times as high as that of the general statewide population.

In addition to showing growers and processors which hybrids could be planted at higher populations than normal, results of the study also challenge seed companies to improve CST.

For example, the once - abundant Echinopsis pampana, endemic to the puna desert of Peru, has been collected illegally for the ornamental plant trade at such high rates that at least 50 % of the population has disappeared in the last 15 years.

With the current human population growth, these plants can not sustain such high levels of collection and habitat loss.»

Plant workers are being exposed to much higher levels of radiation than the general population, and will be monitored for long - term health effects.

«We need high - yielding varieties to address rising population and decreasing land area planted to rice,» he said.

High prices of agricultural inputs, rising population, typhoons, and decreasing land area planted to rice, have all played roles in setting the nation back in its rice - self sufficiency efforts.

There are two general types of resistance genes found in wheat: Race - specific genes confer a high - level of resistance to specific strains of leaf rust but can be easily overcome by genetic mutation in pathogen populations, while slow rusting (APR) resistance provides partial resistance to a broad spectrum of races, but is typically effective only at the adult stage of plant growth.

However, higher dietary levels of alpha - linolenic acid, a fatty acid found in plants, was associated with less stroke in the total population, not just those with the APOE variation, she added.

These populations follow diets that are higher in whole plant foods and lower in fat and saturated fat than the typical western diet.

To prevent Vitamin B12 deficiency in high - risk populations such as vegetarians, it is necessary to identify plant - derived foods that contain high levels of Vitamin B12.

The plant based diet may be temporarily effective for CORRECTING poor health from these factors, but for the growing population of responsibly physically active individuals that require higher protein diets, a strictly plant based diet will only starve their muscles, bones and tendons leading to injury, tissue damage and disease.

It is home to native birds and plant life that face many threats and imbalances due to invasives, development, and higher population.

A brief and incomplete list of their positive roles would include the pollination of many, perhaps most higher plants; the decomposition of organic materials, facilitating the recycling of carbon, nitrogen, and other essential nutrients; the control of populations of harmful invertebrate species (including other insects); the direct production of certain foods (honey, for example); and the manufacture of useful products such as silk and shellac.

third, it is necessary to site nuclear plants near population centers because the energy is gradually lost over miles of high tension lines.

These parts might not have very high human populations, but they tend to live near the shores, and the local plants and animals can be affected by these rapid changes.

The Lambert - Quiggin school of econometrics would agree there's a likely high R - squared and t statistic, and that these «prove» that CO2 «causes» population growth and AGW, as well it may, as the same source (236, see below) shows that C3 plants (95 % of all plant matter) do best at elevated CO2 levels, eg soya, 61 % higher mass when CO2 rises from 160 to 330 ppm, with mass peaking at CO2 600 ppm (today only 380).

Nevertheless, sequestering CO2 (gaseous plant food)-- when human population is at an all - time high — seems to be a very unsound policy.

In particular, many of the plant populations predicted to persist in the near future will actually do so under local climate conditions that are already unsuitable for their long - term survival because long live spans and clonal reproduction strategies of many high mountain plants allow them to retard extinction.

Increased weed and pest pressure associated with longer growing seasons and warmer winters will be an increasingly important challenge; there are already examples of earlier arrival and increased populations of some insect pests such as corn earworm.64 Furthermore, many of the most aggressive weeds, such as kudzu, benefit more than crop plants from higher atmospheric carbon dioxide, and become more resistant to herbicide control.72 Many weeds respond better than most cash crops to increasing carbon dioxide concentrations, particularly «invasive» weeds with the so - called C3 photosynthetic pathway, and with rapid and expansive growth patterns, including large allocations of below - ground biomass, such as roots.73 Research also suggests that glyphosate (for example, Roundup), the most widely - used herbicide in the United States, loses its efficacy on weeds grown at the increased carbon dioxide levels likely to occur in the coming decades.74 To date, all weed / crop competition studies where the photosynthetic pathway is the same for both species favor weed growth over crop growth as carbon dioxide is increased.72

With solar plants along vast stretches of the almost 2,000 - mile U.S. - Mexico border on the Mexican side, a new high - voltage direct - current (HVDC) grid could be set up to transmit energy efficiently from that long, snaking array to population centers along the border.