Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

Damen, M. C. J.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856343064

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: XV, 547 Seiten

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856343064

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 4 Renewable resources in rural areas: Vegetation, forestry, agriculture, soil survey, land and water use. Chairman: J. Besenicar, Liaisons: M. Molenaar, Th. A. de Boer

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Farm development using aerial photointerpretation in Ruvu River Valley, Ragamoyo, Tanzania, East Africa. B. P. Mdamu & M. A. Pazi

Document type:: Multivolume work

Structure type:: Chapter

Table 1« Electrical Conductivity Standards for plant growth. 487 ELECTRICAL 2 Saturation extract CONDUCTIVITY mmhos/cm at 25°C 1:5 soil to water suspension RELATIVE LEVEL OF SOLUBLE SALTS PLANT GROWTH RESPONCE 2 0.1 Low non saline No injury to plants . 2-4 0.1-0.4 Medium slightly saline. Very salt sensitive plants may be injured. cc 1 -cr 0.4-0.75 High moderately saline. Injurious to salt sensitive plants 8 0-75 Excessive strongly Very injurious to many plants of any age only salt tone cant crops can grow. 2. \vith regard to soils fertility in almost all of the soil profile sites samp led and analysed, the soils have a defici ency of sodium, potasium, calcium and ma gnesium. It is therefore necessary to raise the levels of the macronutrients by the application of fertilizers. From the soils analytical data, also the soils have reasonable amounts of available phosphorus, nitrogen and organic matter. 3. The soils in the study area range from deep sand, excessively drained, (northwest part of the farm) to sandy clay loams (in the middle part of the farm). They were classified as canbic Arenosols, utric gleysols (mapping unit c). The Alluvial flood plain consists of deep poorly drai ned heavy clay soils. They were classified as Eutric Fluvisols, Utricgleysols and pellic Vertisols (mapping Unit A). REFERENCES CIDA, 1979. Coast Dar es Salaam Regions Water Master Plan Report Vol. B. Land Resource s. Goosen D, 1967. Aerial photointerpretation in soil survey SOIL Bui. 6 FAO Rome. Nyle C. Brady 1968. The Nature and Properties of soils. 4. CONCLUSION 1. From the analyti cal re sul t s , it can be con eluded tha t the f e r t i 1 ity 0 f the soil i s 1 ok e s p e cially in th e c oa stal plain area. How r ever , d e pe nd ing u pon the crops to be plan ted t h e alluvia 1 plain area n eeds littl e fort ilizat ion • 2. Due to the fine textur e 0 f the soils in the alluvial flood plain, wa te r does not dr ain easily . Ser ious d ama ge may be caused to heavy soils by plo rgh in g when soil s are too w r e t. Th is c au ses i mpemeable pans , compac tion and s mearin g « ff ect of the soils. Therefor e i t i s reco mmend ed that proper farming methods , use of th e required f armin g machines and i mpleme nt s shotild be ad opte d in order to pr e serve go od soil struc t ure . ( 3. Soil manag ement practi ces «. g . instal lation of an und ergrou nd ti le d r a- inage system) aimed at improving the soils drainage would be necessary. 4. Fairly accurate and economical soil surveys for agricultural development planning can be achieved by using aerial photographs. Tanzania has good aerial photography coverage lor natural resources inventories and exploitation. Therefore it is recommended that aerial photo inter pretation should be user! as a tool in soil surveys. enforced. It has to be emphasized and

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