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Accueil du site → Doctorat → Inde → 2008 → Studies on the dynamics of soil microbial biomass and nitrogen mineralization associated with tillage practices in rainfed agricultural systems

Assam University (2008)

Studies on the dynamics of soil microbial biomass and nitrogen mineralization associated with tillage practices in rainfed agricultural systems

Gosal, Kuldip

Titre : Studies on the dynamics of soil microbial biomass and nitrogen mineralization associated with tillage practices in rainfed agricultural systems

Auteur : Gosal, Kuldip

Université de soutenance : Assam University

Grade : Doctor of Philosophy (PhD) in Science 2008

Préface
The study on the dynamics of soil microbial biomass and N mineralization associated with tillage practices will not only help in knowing the best tillage option viable for a particular soil type to attain enhanced productivity but also can contribute to the filling up of the gap in the lacking knowledge on the relationship between soil and microbial nutrients, mineralization and overall crop productivity in a rainfed agricultural system with former so far being a neglected area of research. The study was carried out in three villages’ viz., Model, Lekhi and Nirjuli within the Papum Pare district of Arunachal Pradesh bearing soil textural variability. The sampling frequency was designed for two cropping seasons of 2005-2007. The data collected have been tabulated, analysed for statistical significance and presented in the form of nine chapters including graphical representation of important and trendy data sets. Amongst the technical chapters. Chapter 4 deals with agroecosystem categorization besides giving a detail study on the species composition, diversity, biometric changes and productivity with respect to tillage intervention in a rainfed agricultural system. Chapter 5 describes the changes in soil and plant nutrient properties through tillage. Data on soil microbial dynamics and N mineralization have been critically discussed in Chapters 6 and 7 that deals with their spatial and temporal dynamics along with their contribution to soil nutrient budget. Chapter 8 includes the possible effect of residue amendments on the tillage intervened agroecosystem while the findings of the study have been discussed critically in Chapter 9. Summary enlists the observed results of the study and the feasible acclamation for sustainable management of tillage intervened agroecosystem. Literatures cited in the text have been listed at the end.

Mots clés : Effect of Tillage, Agroecosystem Categorization, Microbial Biomass Dynamics, Tillage Gradient, Nitrogen Mineralization Dynamics, Residue Amendment

Présentation et version intégrale (Shodhganga)

Page publiée le 16 février 2021