The main objective of this research is to develop a methodology for identifying different varieties of paddy seeds using morphological features. Morphological features are powerful tool which could separate the different varieties of seeds. Three varieties of paddy seeds are taken that are classified according to their morphological feature range. Image of paddy seeds was acquired by a canon di...

PADDY is an experimental free-text retrieval engine for the Fujitsu AP1000. Considerable development of PADDY has occurred since the work reported at the second CAP Workshop. Search patterns now include generalised regular expressions, set operations may now be applied to the results of searches, and proximity operators have been implemented. The speed of literal searches has been increased and...

Although bubble ebullition through water in rice paddy fields dominates direct methane (CH4) emissions from paddy soil to the atmosphere in tropical regions, the temporal changes and regulating factors of this ebullition are poorly understood. Bubbles in a submerged paddy soil also contain high concentrations of carbon dioxide (CO2), implying that CO2 ebullition may occur in addition to CH4 ebu...

The paddy soil-rice system has efficient nutrient replenishing mechanisms. Basic cations and silica are supplied by irrigation water, while biological fixation works as an inexhaustible source of N in the system, and phosphorus availability is enhanced under anaerobic conditions. This, along with almost perfect resistance to soil erosion, gives the paddy rice system high productivity as well as...

this experiment was conducted in order to optimize the use of paddy fields as second cropping in the mazandaran province. study planed with 8 new cultivars and carried out in randomized complete block design with four replications during two years 2006 and 2007 in dashte-naz agricultural research station of sari. nursery prepared in the september and seedlings were transferred to the field in t...