Geetha, T; Dr. Balagopalan, M(Cochin University of Science and Technology, January 8, 2008)
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Abstract:
Impact of teak and eucalypt monoculture on soils in the highlands of kerala .The thesis is arranged under nine chapters. The first chapter introduces the topic, reviews the literature pertaining to the study and presents the aims and objectives of the study. The second chapter briefly describes the study location. experimental design and sampling methodology. The third chapter deals with physical properties of plantation soils. The fourth and fifth chapters cover the chemical properties and macro- and micro nutrient status in plantation soils. The organic matter fractions in plantation soils are described in sixth chapter. First part of the seventh chapter presents the results of factor analysis and the second part deals with fertility index of plantations. All these chapters are self-contained with separate introduction, materials and methods and results and discussions. A general discussion of the results is included in the eighth chapter. The ninth chapter includes conclusions and summary A study that traces the variation in physical and chemical properties and nutrient status of teak soils with age of plantations, till the end of a rotation period is thus highly pertinent. Such a study, with an adjacent natural forest as a reference stand will not only generate information that will help us to understand the pattern of variation in soil properties, but will also aid us in formulating better management strategies. The data generated by such a study will be more useful if accompanied by information on soil changes following a short rotation plantation crop. As Eucalypt, a short rotation crop is the second major
plantation crop in Kerala, it was chosen for the study.
Description:
Soil Science discipline, SNPFM Division
Kerala Forest Research Institute
Peechi
Mohamed Ali, M I; Dr.Sharma, J K(Cochin University of Science And Technology, February , 1993)
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Abstract:
In forestry, availability of healthy seeds is an important
factor in raising planting stock. Initial seed health
and storage conditions are the major factors governing the
germinability of seeds. Like seeds of agricultural and horticultural
crops, forest tree seeds are also liable to be affected
by micro-organisms during storage, which affects the
germination, and reduces the viability. Further introduction
of seed-borne diseases into newly sown crops/areas on account
of using unhealthy seeds is also not ruled out. Availability
of healthy stock of seedlings is intrinsic for raising plantations
and to meet this requirement elimination of nursery
diseases by appropriate chemicals is of prime imortance. As
exotic tree species may become susceptible to various native
pathogens, it is generally considered better to select indigenous
tree species for large scale plantations as they are
well adapted to local environment. However, before taking up
large scale afforestation progranme involving any indigenous
tree species, it is essential to have knowledge about seed
disorders and seedling diseases and their management. with a
View to select appropriate tree species with fewer seed disorders
and seedling disease problems for use in further plantation
programme, four indigenous tree species such as Albizia
odoratissima (L.f) Benth., Lagerstroemia microcazpa Wt., Pterocazpus marsupiwn Roxb. and Xylia xylocarpa (Roxb.) Taub.
were evaluated to meet the above parameters
Description:
Department of environmental studies, Cochin University of Science And Technology