Spatial Analysis of Yield and Soil Components in an Onion Field

Journal of Applied Biological Sciences

Kh. M. DARWİSH¹  A. Abd El-KADER¹ 

关键词: Precision Farming;    Spatial Variability;    Yield Map;    Dry Onion;   

DOI  :  

学科分类：生物科学（综合）

来源: Nobel Bilim ve Arasirma Merkezi/Nobel Science and Research Cente

【 摘 要 】

ThemainobjectiveofthisstudyistodeterminespatialvariabilityinadryonionfieldinEL-Saffagriculturalfarmingvillage,GizaGovernorate,Egypt,andtoproduceamanagementstrategy,whichisbasedonspatialvariabilityofyieldandsoilcomponents.Theonionfieldpropertiesweredeterminedandgiveninmaps.Soilsamplesweretakentodeterminepropertiesofsoilsuchassalt(EC),pH,availableN-P-Kandonionyield.Longitudinalslopewasalsomeasured.Resultswereusedtoproducemaps.Mostpercentageofthefieldsoilswasdeterminedassandtosandyloamtexturedsoilsandloamysandinlowerdepth.Theirsurfaceiscoveredwithmanyfineandmediumgravel.Thefinalgoalofthecurrentstudyistoproducetheapplicationmapsthroughdelineationofthemanagementzones.Itisfoundthatthereisnomuchvariabilityofsalinitybeforeharvest,exceptinthewesternpartofthefield.However,inthenorthernpartsofthefield,thereisabigvariabilityofsalinityandreachinghigherlevels.Yieldofdryonionincreasedbydecreasingoftotalsolublesalts.TherangeofresearchfieldpHfitswellwiththespatialvariabilityrangeprovidedinmoststudyareatomeetsatisfactoryyield.Nitrogenvariableshowedapronouncedtendencyforlocalclusteringofsimilarvalues,withgradualchangesfromareasoflowtohighvaluesfromsouthtonorthdirectionofthesampledarea.Visually,thereisanobviousassociationofavailableKwiththesalinity-relatedcharacteristics,especiallyafteryieldharvest.Contradictory,amanorrelationbetweenPandfieldsalinityconditionsisexisted.Yielddistributionshowedapronouncedtendencyforlocalclustering.AvailableNitrogen,Phosphorus,andPotassiuminthefieldreflectingthegoodnutrientpowersupplyofthestudiedsoilaswellasoniondrybulbsaccordingtotherelatedmaps.ItisevidencethatfertilizationwithN,PandKshouldbeappliedwithrequiredtechnicalsolutionsprotectedaccumulationandleachingofnitrogenandphosphorous.Themodelscanprovidepartialinformationtohelpimprovesoilfertilitytoincreasetheyieldproduction.Theworkreportsonhowsoilvariablesandcropgrowth(statisticalandspatialmodels)canbeusedtoassestherelationshipsbetweenthecropyieldproductionandsoilvariablesandtodelineatedifferentmanagementzonesinthetestarea.Generally,precisionfarmingapplicationsrequirehightechnologybuttherearesomeopportunitiessuchascreatingyieldmapforcropproductionmayapplyinEgypt.

【 授权许可】

Unknown