in order to study of yield, growth index and physiological traits in spring sugar beet genotypes with delayed planting date, a field experiment was carried out in chenaran in khorasan razavi province in the east of iran in 2008 cropping season. for this experiment a complete randomized block design with 4 replications and 6 treatments was used. the experimental treatments were six improved vari...

Pre-harvest desiccation of rapeseed crop may allow a more timely harvest as well as increase the speed and harvest operation efficiency as a second crop after rice. An effective desiccant which could be used as a harvest-aid with no negative effects on rapeseed yield and quality would be advantageous for oil seed crop producers and may reduce yield losses with no interferential effects on rice ...

Multiple cropping, a common practice of intensive agriculture that grows crops multiple times in the agricultural land in one growing season, is an effective way to fulfill the food demand given limited cropland areas. Deriving cropping cycles from satellite data provides the spatial distribution of cropping intensities that allows for monitoring of the multiple cropping activities over large a...

Rapeseed has formed three ecological types, namely winter, semi-winter, and spring during the long domestication process. Different ecotypes have different low-temperature requirements for floral initiation. growth a large demand nitrogen, amount of nitrogen application significantly impacts number flowering. Meanwhile, time imitation determined quantity bud, final pods, yield rapeseed. Therefo...

Summary Incorporating the dominant male sterile gene, Ms44, in new maize varieties results 50% non-pollen producing (FNP) varieties. This makes more nitrogen efficient and increases yield directly by an average of 200 kg ha −1 across levels. However, as half plants do not shed pollen, presence Ms44 FNP variety is clearly visible. technology can improve food production security African maize-bas...

Legumes are widely used in many cropping systems because they share their nitrogen fixation products and phosphorus mobilization activities with their neighbors. In the current study, however, we showed that co-cultivation with legumes increased cadmium (Cd) contamination in the adjacent crops. Both field and mesocosm experiments indicated that legumes increased Cd levels in edible parts and sh...

Blackleg disease of canola in western Canada has been effectively managed for the past 20 years through a combination of resistant varieties, adequate crop rotation intervals and good agronomics. Increased canola production in western Canada, in large measure through more frequent cropping in the rotation, has increased the risk that resistance to blackleg in current varieties may be defeated. ...

To determine the influence of N fertilizer management on rice yield and quality under diversified rotations establish a high-yield, high-quality, environmentally friendly planting technology, rapeseed/wheat–rice rotation system for 2 successive years was implemented. In those systems, conventional rate (Nc; 180 kg/hm2 in rape season, 150 wheat season) reduced (Nr; 120 were applied. Based an app...

The aim of the study was to document wheat landraces that were and and Dandi districts, West Shewa, Ethiopia; and to investigate the extent of genetic loss and its causes. Survey was carried out in three Peasant Associations of Ambo District and four Peasant Associations of Dandi District from 2007 to 2008. Three to five farmers’ group per Peasant Association containing 5 to 12 individual farme...