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Wilt And Growth Is Temporarily: If plants are to grow healthily without check, they must have access to a constant supply of water or they will wilt and growth is temporarily halted. If water is not made available to them soon after wilting, their leaves will turn crisp and brown and they will eventually die. It is particularly important to keep vegetables and fruit well-watered. Sandy soils will dry out more quickly than clay soils, and will have to be watered sooner tn a drought.
If plants are to grow healthily without check, they must have access to a constant supply of water or they will wilt and growth is temporarily halted. If water is not made available to them soon after wilting, their leaves will turn crisp and brown and they will eventually die. It is particularly important to keep vegetables and fruit well-watered. Sandy soils will dry out more quickly than clay soils, and will have to be watered sooner tn a drought.See Also Explosive Growth:Agriculture continues to be the backbone of the Guatemalan economy, contributing fully 30% of the gross national product, followed by comŽmerce ( about 28%) and manufacturing ( about 15%). Fairly satisfactory growth rates in the GNP occurred in the late 1940's and early 1950's under economic diversification and industrial deŽvelopment programs sponsored by progressive reŽgimes. More progress was recorded in the early 1960's, but the overall rate of development, parŽticularly in an era of explosive population growth, has been far from adequate. While coffee reŽmains the nation's chief foreign exchange earner, lie most dynamic of recent economic trends has been the development of cotton as an export commodity.
There never has been a more exciting time for earth scientists than today. The whole field is in explosive growth. New techniques are revealŽing new areas of research and new observations are leading to new and controversial theories of the earth. At the same time, the study of the origin, history, and nature of the earth is becomŽing less observational, or purely descriptive, and more experimental and quantitative. (See FeaŽture Article: STUDYING THE EARTH.)
On The Other Hand See Location And Growth:School boards are usually autonomous bodies and accordingly jealous of their status. CooperaŽtion between the school board and the planning board is therefore highly desirable; the guidance of the master plan data relative to population growth, the location and growth of new highways, and other transportation changes are distinctly relevant to the building program of the school board.
With the growth of large-scale housing by institutions, such as insurance companies, an inŽcreasing number of states have laws extending the power of eminent domain for the benefit of such companies. In the majority of such laws the planning board is empowered to review site location and growth, density, and other elements of the proŽposed project. Here again the objective is to safeguard the development of the city along the lines of the master plan.
Lateral growth in trees frequently begins later than growth in height, but the period of lateral growth is longer. Rates of lateral growth likeŽwise are low at the outset, increasing after a few weeks and then diminishing. In view of the long annual period of lateral growth in trees, deleterious environmental conditions may exercise a pronounced effect on growth. In the wood of trees of temperate regions, narrow and wide growth rings may be observed, marking years characterized by unfavorable and favorable conŽditions for growth. |
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