The limestone and sandstone foot-hills are clothed with vines and fruit trees, and are broken by deep alluvial valleys of particular fertility.

The central figure, the woman, was nicknamed " Māra " after the ancient Latvian goddess of motherhood, fertility, and the earth ( see: Māra ), while the cross in her outstretched arm symbolizes the deep importance of Catholicism to Latgalian culture and complements the pagan symbol " Māra ".

By returning switchgrass and other perennial prairie grasses as an agricultural crop, many marginal soils may benefit from increased levels of organic material, permeability, and fertility, due to the grass's deep root system.

Further analysis at the tail-end of the 20th century suggested that the cave art had deep links to prehistoric rituals promoting fertility and successful hunting.

Within the Hawkesbury soil landscape the soil types on the tops of the plateau and ridges are generally lithosols, which have low fertility and are usually less than 500 mm deep.

Between the Cotton Belt and the Tennessee Valley is the mineral region, the Old Land area — a region of resistant rocks — whose soils, also derived from weathering in silu, are of varied fertility, the best coming from the granites, sandstones and limestones, the poorest from the gneisses, schists and slates.

As a result of this mutually-beneficial relationship, alder improves the fertility of the soils where it grows, and as a pioneer species, it helps provide additional nitrogen for the successional species which follow.

The importance of chemically stable humus is thought by some to be the fertility it provides to soils in both a physical and chemical sense, though some agricultural experts put a greater focus on other features of it, such as its ability to suppress disease.

Combined with thin or damaged soils this causes low fertility.

* Soil Science – study of soil as a natural resource on the surface of the earth including soil formation, classification and mapping ; physical, chemical, biological, and fertility properties of soils ; and these properties in relation to the use and management of soils.

Soil science is the study of soil as a natural resource on the surface of the earth including soil formation, classification and mapping ; physical, chemical, biological, and fertility properties of soils ; and these properties in relation to the use and management of soils.

The soils vary in fertility ; erosion is a problem, with crop loss resulting from landslides, washouts, and falling rocks.

The early French settlers named the parish for the fertility of its soils: terre bonne means " good earth.

In the Marlborough region, sandy soils over slate shingles have become the most desirable locations for plantings due to the good drainage of the soil and poor fertility that encourages the vine to concentrate its flavors in lower yields.

The effects of overstocking are often worst on soils of low fertility and in low rainfall areas below 500 mm, as most soil nutrients in these areas tend to be concentrated in the surface so any movement of soils can lead to severe degradation.

Also tilling of soil can cause severe erosion and crusting of soils which will lead to a decrease in soil fertility.

One theory states that the fertility of loess soils is due largely to cation exchange capacity ( the ability of plants to absorb nutrients from the soil ) and porosity ( the air-filled space in the soil ).

The fertility of Loess is not due to organic matter content, which tends to be rather low, unlike tropical soils which derive their fertility almost wholly from organic matter.

A few alluvial soils ( chiefly near the Snowy ) have much better native fertility, and these have always been intensively cultivated.

Heathland is favoured where climatic conditions are typically warm and dry, particularly in summer, and soils acidic, of low fertility, and often sandy and very free-draining ; mires do occur where drainage is poor, but are usually only small in extent.

These soils are rich in minerals but poor in organic material, and have high chemical but low physical fertility.

It can be a problem in heavy, rich soils with good fertility, high moisture, and low boron content.

The productivity of such systems depends primarily on the natural fertility of the soils — enhanced by skillful care — and on the climate.

The element of soil relates both to the composition and the intrinsic nature of the vineyard soils, such as fertility, drainage and ability to retain heat.

It is hypothesized that fertility is a function of the social system when the population as a whole is considered and a function of the subsystems when the two-fold division of core families and marginal families is considered.

An extension of this is the sacred cockfight, ” a popular form of fertility worship among almost all Southeast Asians ” considered by some in the Judeo-Christian ethic as a form of ’ fertility worship ’ or Baalim.

It is also a fertility festival, similar in some ways to other harvest-time celebrations in other cultures.

Although the holiday may use features of the Gaelic Beltane, such as the bonfire, it is more alike the Germanic May Day festival, both in its significance ( focusing on fertility ) and its rituals ( such as maypole dancing ).

The writers of the study had initially speculated that the reason for this is due to endocrinology with larger breasts indicating higher levels of estrogen and a sign of greater fertility, but the researchers said that " Men may be looking more often at the breasts because they are simply aesthetically pleasing, regardless of the size.

The dying god is often associated with fertility.

However, bitheistic and ditheistic principles are not always so easily contrastable, for instance in a system where one god is the representative of summer and drought and the other of winter and rain / fertility ( cf.

Doric Dāmātēr ) is the goddess of the harvest, who presided over grains and the fertility of the earth.

The loss of soil fertility due to erosion is further problematic because the response is often to apply chemical fertilizers, which leads to further water and soil pollution, rather than to allow the land to regenerate.

Humans are the only ape in which the female is fertile year round, and in which no special signals of fertility are produced by the body ( such as genital swelling during estrus ).

In Norse mythology, Freyja ( Old Norse the " Lady ") is a goddess associated with love, beauty, fertility, gold, seiðr, war, and death.

Freyja assists other deities by allowing them to use her feathered cloak, is invoked in matters of fertility and love, and is frequently sought after by powerful jötnar who wish to make her their wife.

The tree was chosen as a symbol of the French Revolution because it is a symbol of fertility in French folklore, which provided a simple transition from revering it for one reason to another.

Furthermore, during the last century there is a negative correlation between fertility and intelligence.

Fertility is not shown before 1950. Notable features before that time are fertility being extremely low during the ending years of the Weimar Republic, when it dropped down to about 1. 1 child per woman in 1933.

Another Ethiopian goddess is Atete — the goddess of spring and fertility.

The first is rather terrestrial, of abundant fertility and luxuriant vegetation, known as the " lower Gan Eden ".

Hyperthyroidism is very rare in canines ( dogs ) ( occurring in less than 1 or 2 % of dogs ), who instead tend to have the opposite problem: hypothyroidism, which can manifest itself in an unhealthy-appearing coat and fertility problems in females.