Temperature in terms of thermal units could influence the crop growth and yield. Similarly different climatic and moisture regime may alter crop phenology, physiology and development and it may be induced on the crop by sowing crop under different sowing dates or environments(years).Keeping in view the findings of current study it may be concluded that crop respond variably under changing climate.Similarly, its need of time to develop a model between environmental variables like temperature and PTQ with crop yield under local environments in order to sustained crop productivity and to...

Climatic variation, continuously increasing population and market infrastructure are driven forces to reduce agricultural productivity and new management options and appropriate genotypes are the need of the day to be considered for sustainable production. Crop simulation models can be complementary tools in field experiments to develop innovative crop management systems under continuous varying climatic conditions. In this perspective, two dynamic crop growth models viz., APSIM (Agricultural Production System Simulator) and DSSAT (Decision Support System for Agro Technology Transfer) were...

Pesticide usage has become an essential component of modern age agriculture. Their applications for the protection of crops through the pests, insects, mites, ticks and weeds are increasing steadily. The Pyrethroids constitute about twenty five percent of total pesticides used worldwide. These are based on an ester, derived from a flower chrysanthemum. Bifenthrin and cypermethrin are amongst natural Pyrethrins used. The excessive use of pesticides creates different environmental problems including soil and water pollution and ecological imbalance. Soil microflora the hidden creatures in...

This book is the fifth and the last volume of a much larger project, Ancient Pakistan - An Archaelogical History. which deals with the prehistory of Pakistan from the Stone Age to the end of the Indus Civilization. This volume deals with the decay and demise of the Indus Civilization and its devolution into post-Harappan regional cultures under the impact of the intruding pastoral nomads from the West, the Indo-Aryans being one of them. A comprehensive bibliography is provided for those who want to dig deeper into the subject.

This is the fourth volume of the Ancient Pakistan - An Archaeological History. It deals with a number of issues of the Indus Civilization, which are primarily of theoretical importance. The main topics that have been discussed are the social and political organization of the Harappan society, the Harappan religion, the Indus script and language, the beginning and the end of this vast civilization, and the recent attempts in creating some myths around the Indus Civilization. Since this volume is primarily dedicated to the theoretical and the abstract, descriptive material is kept to a...