?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Foar.icrisat.org%2F8022%2F&rft.title=FRSP%3ASoil+Fertility+and+Chemistry&rft.creator=ICRISAT%2C+-&rft.subject=Soil+Science&rft.description=Current+priorities+in+the+Soil+Fertility+and+Chemistry+subprogram+are+similar+to+those+discussed+at+the+last+In-House+Review.+We+attach+greatest+emphasis+to+research+on+nitrogen%2C+but+phosphorus+is+gradully+being+given+more+attention.+The+major+changes+in+the+supprogram+over+the+past+two+years+have+involved+experimental+approaches%3B+these+will+be+discussed.++Research+on+nitrogen+has+been+subdivided+also+into+areas+of+different+priority%2C+based+on+both+the+need+and+the+probable+time+-frame+of+the+research+needed.+Studies+of+the+efficiency+of+fertilizer+nitrogen+have+been+given+greatest+priority.+In+out+cooperative+project+with+IFDC%2C+major+achievements+to+data+are+the+demonstration+that+fertilizer-N+can+be+used+effectively+by+cereals+particularly+sorghum+in+the+ICRISAT+environment+provided+that+good+fertilizer+and+agronomic+management+techniques+are+used%3B+the+expertize+in+the+use+of+15N+has+given+a+preliminary+insight+into+the+extent+of+losses.+Residual+fertilizer-N+had+only+low+availability+to+a+succeeding+crop.+A+separate+assessment+of+our+fertilizer-N+experiments+over+the+past+6+years+has+been+provided+us+with+evidence+to+extend+Dr+Kanwar's+comparision+of+the+importance+of+%22Hunger+vs+Thirst%22+in+SAT+soils%3A+on+Vertisols+with+rainfall+as+assured+as+the+ICRISAT+environment+(or+better)%2C+contraint+than+the+oft-quoted+variabilty+in+rainfall&rft.publisher=International+Crops+Research+Institute+for+the+Semi-Arid+Tropics&rft.date=1983&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Foar.icrisat.org%2F8022%2F1%2FRP-2382.pdf&rft.identifier=++ICRISAT%2C+-++(1983)+FRSP%3ASoil+Fertility+and+Chemistry.++Monograph.+International+Crops+Research+Institute+for+the+Semi-Arid+Tropics%2C+Patancheru%2C+Andhra+Pradesh%2C+India.+++++