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Ahmad etal Experimental Agrometeorology

Authors:
  • University of Guelph-Ontario Canada

Abstract and Figures

Weather and crop production are integral components of agriculture. During the era of global warming and climate change, the role of agro-meteorology in agriculture has become more important in mitigating the challenges arisen by climate change. Successful crop production depends on the prevailing weather conditions at different stages of crop growth. This manual has been prepared to enhance the understanding of undergraduate and postgraduate students regarding measurement of weather elements, their interpretation and role in agriculture and its allied subjects. Weather is the most important entity in agricultural production. Sustainable agricultural production is dependent to a large extent on the precise knowledge of the weather resources. Precise measurements of weather elements are required to understand the proper interpretation in relation to crop growth and development. The manual “Experimental Agrometeorology” provides some of that necessary information using practical description of the “microclimate” or “crop environment”. The manual contains practical assignments that deal with the measurement of weather parameters, instruments used and computation of various weather variables, crop simulation models and agro-met advisories. The manual also contains the description of agro-climatic and agro-ecological zones of India and the state of Jammu and Kashmir. The related information through glossary on the subject and tabulated Saturation Vapour Pressure, Maximum Possible Sun Shine Hours, Mean Solar Radiation and Standard Meteorological Weeks has also been included. We hope that the manual will be helpful for undergraduate and postgraduate students of agriculture, horticulture, animal science, forestry, fisheries and other related subjects. Nineteen chapters have been included in the manual with the aim to provide a convenient form information regarding the practices and procedures that are of the greatest importance in agricultural meteorology.
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Article
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The present paper attempted to divide Jammu and Kashmir into micro agro-climatic zones with the purpose to have an understanding of the cropping system that may be suitably adopted in such a region. For the delineation of State into agro-climatic zones, altitude, precipitation-temperature regime, major crops are grown and agricultural productivity have been taken into consideration. The different map layers were prepared using suitable data base and methodologies. The superimposition of these map layers, viz., altitude zonation map, cropping land use map, productivity map and PT Index map resulted in the delineation of fourteen zones (five-climatic zones and nine agro-climatic zones). The largest among them is Zone L (93531 km 2) and the smallest is Zone 5J (384.6 km 2). The zones with altitude below 1800m are most suitable for paddy (rice) cultivation or wheat cultivation depending upon the availability of water requirements for the crop, while as those which lie above 1800m are suitable for maize or orchard cultivation. The productivity of the crops vary with the geo-climatic conditions and as a result of this, the productivity of rice (paddy) is highest in two zones of Jammu division (1J and 3J) and one zone of Kashmir valley (1K), while as productivity of maize is higher in zones of Jammu division (1J, 2J and 2'J) than Kashmir and similarly zone 2K is leading in the wheat productivity in Kashmir division and zone 3'J and 2'J are high productive wheat zones in Jammu division. The Ladakh division (zone L) is producing only wheat with the productivity of 17.26 q/ha (quintals/hectare).
Book
The book is a practical manual which has been created to support the syllabus of agro-meteorology courses specifically designed for graduate and post-graduate students. The topics covered in the manual include working with meteorological instruments for measurement of various meteorological parameters like temperature, humidity, sunshine hours, precipitation, etc. Separate chapters have been included for computation of growing degree days, agro-climatic zones, crop modelling and agro-advisory services. The book will have great appeal to students of agriculture, horticulture, and forestry.
Article
Six different energy summation indices representing radiation and thermal units and pan and potential transpiration (PT), which could be used for identification of phenological events and maturity dates in crops, were accumulated over the sowing to anthesis, and sowing to maturity periods of three varieties of wheat. Determination of the coefficient of variation of the summations showed that while pan evaporation summed over sowing to anthesis stage is a better parameter than the rest of the units, for the season as a whole, accumulated PAR or PT showed lower variability than accumulated pan evaporation.
Agricultural hydrology as evaluated by monolith lysimeters 1944-1955
  • L L Harrold
  • F R Dreibelbis
Harrold, L.L. and Dreibelbis, F.R. (1967). Agricultural hydrology as evaluated by monolith lysimeters 1944-1955. USDA Technical Bulletin, (1367).
Decision support system for agrotechnology transfer version 4
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Soil climatic zones in relation to cropping patterns
  • A Krishnan
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Krishnan, A. and Singh, M. (1968). January. Soil climatic zones in relation to cropping patterns. In Proceedings of the Symposium on Cropping Patterns, Indian Council of Agricultural Research, New Delhi (pp. 172-185).
The agro-climatic approach
  • S S Khanna
Khanna, S.S. (1989). The agro-climatic approach. Survey of Indian agriculture, pp. 28-35.