Nematology In The Year 2000 A. D. As I See It In Relation To Dryland Farming uri icon

abstract

  • Over the years, the prcscncc of ncnlatological problems has gradually becomemore and more apparent, especially in developed nations. This trend is gaining'momentum in developing' countries as well. It is now known that ncrnatodediseases take their toll in crop production all over the world. A recent survcyindicated that nlonetary losses due to discascs causcd by ncmatodc on a worldwidebasis exceed $ 100 billion annually (Sasser and Freckmon, 1987). Thoughextensive in occurrence, discascs caused by nematodes Icad to great loss in tropicalcrop production. The 'rcasons for this arc probably many ' and diverse;~avous;~bsloci l tcmperaturcs for nematode activity and dcvclopment during mostparts of the year, longer growing seasons, cultivation of susccptiblc crops continuouslyyear after ycar, occurrcncc of many d;jmaging spccics in thebtropics,,and lack of general awareness about these diseascs are some of thc rcasons formost of the damage. In somc crops, such as banana. coconut, and vcgctablcs.the damagc is usually spectacular, wllile in pulses, oilseeds, and Inany other cropsin dryland agriculture, the damagc is less dramatic, but surc and cun~ulativc.resulting in reduced crop productivity. Crop yields in the drylands arc as sucllpoor due to a lack of soil moisture and nutrients. Tlic prescncc of insect pcsts,nematodes, and other discascs further reduce the potential yields

publication date

  • 1988