Sentences with phrase «deeper soils not»

Not exact matches

The organically - farmed soil not only had deeper topsoil but also significantly higher organic matter content and suffered less soil erosion than the conventionally farmed soil.

Susan Lorenz studied soil, sediment, ground and surface water samples, and said that although she found lead present in surface soils, it had not migrated to deeper soils or ground water.

I got a great idea lets drill off Long Island to make up for the loss of Florda oil... Rump can not possilbly soil the beach in front of Mar a Lago but who cares about NY... Not Rumps fault we are a deep blue stanot possilbly soil the beach in front of Mar a Lago but who cares about NY... Not Rumps fault we are a deep blue staNot Rumps fault we are a deep blue state.

Despite this good news, the team's data also show that the radioisotopes seem to be stuck firmly to the soil, mainly in the top five centimeters (see «Skin deep»), and are not being washed away by rain.

The remaining soil organic matter is not — as is frequently the case with forest soil — mostly present as «forest floor» in the surface layer, but lies deeper underground where it is better protected from humus - degrading microorganisms.

The tentacles went just as deep as did the tap roots of other species such that the trees were not trading off structural differences for the ability to seek nutrients and water deep in the soil.

When he tested soils from the experimental plots, he saw soil organic carbon concentrations rise gradually with increases in nitrogen fertilization at soil depths from 0 to 6 inches, although not at deeper ones.

These soils typically don't hold a lot of carbon, but the researchers believe warming has encouraged soil nematodes and mites, which help decompose leaves and other plant matter, to make their way to the deeper soils.

Evidence from carbon isotope records from both soil carbonates [18]--[20] and biomarkers (n - alkanes) extracted from deep - sea sediments [21] provide clear evidence of a progressive vegetation shift from C3 (∼ trees and shrubs) to C4 (∼ tropical grasses) plants during the Plio - Pleistocene.

If you don't want to soil test, just use a shovel to remove a 6 - inch deep section of soil and grass.

They do not like bright light and move deep into carpet fibers or under furniture, organic debris, grass, branches, leaves, and soil.

Jockum Nordström: I was in the middle of the island, not too close to the sea, where the soil is not too deep, like meadows.

Mechanical Engineers learn some basics about Fluid Mechanics but not as deeps as taught in Geo / Soil Sciences.

However, even if net accumulation of biomass continues for a very long time (and produces very deep soils), the rate of accumulation is going to be steady at best — it is certainly not going to increase as the forest matures.

Bonin Petrels are burrowing birds, and over the years their nesting activity has helped to stir the lead paint chips deep in to the soil — as far as 15 feet deep.

Is not the precipitous loss of groundwater levels, the fact that deep, rich agricultural soils that took thousands of years to be generated but are now exhausted in less than a decade, the collapse of marine fisheries, the loss of biodiversity (thousands of times higher than background rates), the number of species becoming endangered etc. etc. etc. not enough to say that we are headed in the wrong direction?

For deep placement, nitrogen (as a 28 «N solution of urea - ammonium nitrate) was banded 10 to 15 cm below the soil surface using modified anhydrous ammonia applicator knives spaced 45 cm apart.

Nitrogen fertilizer was incorporated in the surface layer of soil, not deep banded.

We propose that when there is adequate precipitation to allow deep drainage, trees can survive on clayey soils, however, in periods of lower precipitation, there may not be enough water reaching the rooting zone to meet the evaporative demand.

been associated with any or all of a number of mechanisms, including persistent flammability, inhibited recruitment of big trees in locations where their early growth was not sheltered so that their roots could reach deep soil water, persistent shrub vegetation types, etc..

While such models lack adequate observational datasets of subsurface soil properties and / or geology, it is clear that the time scale for deep permafrost thaw is measured in centuries, not years.

The repeated fires modify ecosystem structure, penetrate ever deeper into forest margins, affect large areas of understory vegetation (which is not detected by remote sensing), and take an ever greater cumulative toil on soil quality and its ability to sequester carbon.

Preferred habitat: edges of forests, lowland areas, fields, thickets; requires deep, moist, but well - drained bottomlands + + + + Foliage / winter appearance: evergreen + + + + Soil conditions: loam, clay loam, well drained + + + + Light conditions: partial shade to full sun + + + + Plant spacing: 8 to 15 feet + + + + Wildlife value: Seeds attract American Robin, Cedar Waxwing, Eastern Bluebird, Mickingbird; it is a butterfly nectar and larval food plant + + + + Note: plant will reseed itself prolifically with the help of robins; do not be surprised if a small number of your cherry laurel population die during changing climatic conditions

The pipes pointing the collected water into the ground would have to run rather deep to ensure the water actually hits soil and not more city infrastructure, and there would likely be maintenance involved to keep the collection system from clogging up.

I do not know the exact rules because I secure all trenches but - and this also depends on the soil - the looser the soil the more shallow you need «shoring» If it's more than a 3 - 4» deep take care and slope the sides - the deeper you get you need to secure the sides.