Oct 09

Estimation of annual rainfall penetration from saturated hydraulic conductivity, soil moisture content and potential, and actual monsoon period


There are many empirical formulae for estimation of this factor, but these are not universal in their application regarding their methodologies. Datta et al (1973) have attempted in a classical way for assessing annual rainfall penetration with the help of … Continue reading

Sep 17

Role of legume crop rotation in rice-based cropping sequence in managing soil salinity problem and in maintaining soil fertility and rice productivity in coastal alluvial soil


Introduction  Land and water are the two most vital natural resources of the world and these are under tremendous stress due to the ever increasing biotic pressure. Accelerated land degradation caused by soil erosion, waterlogging, salinization, alkalization, acidification, fertility depletion, … Continue reading

Sep 15

RHA (Rice Husk Ash) in ameliorating soil salinity, alkalinity and acidity


Rice husk is a by-product of the rice milling industry. It is also abundantly available.  Rice husk is a residue produced in significant quantity on a global basis.  While they are used as a fuel in some regions, in other … Continue reading

Jul 04

Arsenic content of groundwater got reduced through storage in ponds

Batteries of sedimentation ponds and channels

An inventory survey (1998-2000) was conducted on land and water use pattern in  Gotera mauza  under new alluvial zone of the Gangetic delta in West Bengal. The survey revealed that ponds were continuously filled with arsenic contaminated groundwater through peoples’ … Continue reading

Jul 04

In quest of a pattern in annual rainfalls


Heat from the sun vis-à-vis evaporation and rainfall: Cause and effect Sun is the source of all energies. Heat  from the sun is the driving force in the earth’s hydrological cycle. It is due to the attraction of the sun … Continue reading

May 28

Mauza wise water conservation

Farm pond

Mauza wise or village wise water conservation is hydrologically proved to be the most beneficial method for conserving rainwater as excess surface run-off from an area or watershed. http://water-soil.org/hydrological-balance-planning-irrigation-coastal-areas This method of rainwater conservation is very much useful where annual … Continue reading

May 25

Fringe areas greatly influence the development of the Sunderbans

Fringe Areas in the Sunderbans

Either of the expansion of conventional agriculture in the community development block or the development of the forest by itself can not exclusively address the problems of Sunderbans Biosphere Reserve (SBR). Only the development of fringe areas can claim to … Continue reading

May 20

Prediction of Drought and Flood years using length of runs of annual rainfalls


While working on prediction of drought and flood years we are always making judgements and decisions on the basis of incomplete information, but this is preferable to decisions based on no information at all. In this light, we do statistical … Continue reading

May 13

Agroclimatic analysis for onset of agricultural drought period in a coastal area

Agroclimatic data analysis for onset of agricultural drought in a coastal area

    Studies on air temperature are necessary for assessing climatic conditions favourable for growing crops and also for altering the cropping pattern, if necessary, on the basis of hydrological balance in a particular area. Contai (21 ̊47´.15 N Lat … Continue reading

May 01

Water harvesting in coastal and deltaic region

Water Harvesting in Coastal and Deltaic Regions

Water harvesting in coastal and deltaic regions is the basic and problematic task for any other developmental works in these areas. The problem further intensifies with the ingress of sea water in rivers, channels and groundwater. Water harvesting in suitably … Continue reading