?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+SISTEM+OLAH+TANAH+KONSERVASI+DAN+PEMUPUKAN%0D%0ANITROGEN+JANGKA+PANJANG+TERHADAP+N-TOTAL+DAN+NITRAT%0D%0ATANAH+PADA+LAHAN+PERTANAMAN+JAGUNG+(Zea+mays+L.)+DI%0D%0AKEBUN+PERCOBAAN+POLITEKNIK+NEGERI+LAMPUNG&rft.creator=0514031018%2C+AYU+DASA+NOVITA&rft.subject=+&rft.description=Abstrak%0D%0A%0D%0ADi+Indonesia+saat+ini+telah+dikembangkan+penerapan+sistem+olah+tanah+konservasi.%0D%0ACara+persiapan+lahan+yang+memenuhi+kriteria+olah+tanah+konservasi+adalah%0D%0Apengolahan+tanah+minimum+dan+tanpa+pengolahan+tanah.+Selain+dengan+sistem%0D%0Aolah+tanah+konservasi%2C+usaha+untuk+menigkatkan+produksi+tanaman+pangan+juga%0D%0Adapat+dilakukan+dengan+pemupukan.+Pemupukan+merupakan+suatu+tindakan%0D%0Apemberian+unsur+ke+tanah+atau+tanaman+sesuai+yang+dibutuhkan+untuk%0D%0Apertumbuhan+normal+tanaman.%0D%0APenelitian+ini+bertujuan+untuk+mengetahui+pengaruh+sistem+olah+tanah+dan%0D%0Apengaruh+pemupukan+nitrogen+jangka+panjang+terhadap+N-total+dan+nitrat+(NO3-)%0D%0Adalam+tanah+pada+lahan+pertanaman+jagung+di+Kebun+Percobaan+Politeknik+Negeri%0D%0ALampung.+Penelitian+ini+dilakukan+dengan+menggunakan+rancangan+acak%0D%0Akelompok+lengkap+(RAKL)+disusun+secara+faktorial+dengan+4+ulangan.+Faktor%0D%0Apertama+dalam+penelitian+ini+adalah+perlakuan+sistem+olah+tanah+(T)+yaitu+T1+%3D%0D%0Aolah+tanah+intensif%2C+T2+%3D+olah+tanah+minimum%2C+T3+%3D+tanpa+olah+tanah%2C+dan+faktor%0D%0Akedua+dalam+penelitian+ini+adalah+pemupukan+nitrogen+jangka+panjang+(N)+yaitu%0D%0AN0+%3D+0+kg+N+ha-1%2C+dan+N1+%3D+200+kg+N+ha-1.+Adapun+kombinasi+perlakuan+yang%0D%0Aditerapkan+adalah+%3A+N0T1+%2C+N1T1+%2C+N0T2%2C+N1T2%2C+N0T3%2C+N1T3.%0D%0APada+masing-masing+petak+percobaan%2C+sampel+tanah+diambil+pada+tiga+titik%0D%0Akemudian+dikompositkan.+Pengambilan+sampel+tanah+untuk+sampel+nitrat%0D%0Adilakukan+pada+fase+vegetatif%2C+fase+generatif+dan+setelah+panen+tanaman+jagung%0D%0Apada+kedalaman+0-20+cm+sedangkan+untuk+sampel+N-total+dilakukan+sebelum%0D%0Apengolahan+tanah+pada+musim+tanam+sebelumnya+pada+tanaman+kedelai+pada%0D%0Akedalaman+0-5+cm%2C+5-10+cm%2C+dan+10-20+cm.+Data+yang+diperoleh+dianalisis+dengan%0D%0Aanalisis+ragam+dan+dilanjutkan+dengan+uji+Beda+Nyata+Jujur+(BNJ)+pada+taraf+5+%25.%0D%0AData+yang+diperoleh+diuji+homogenitasnya+dengan+uji+Bartllet+dan+aditifitasnya%0D%0Adengan+Uji+Tukey.%0D%0ADari+hasil+penelitian+didapatkan+bahwa+sistem+olah+tanah+tidak+berpengaruh%0D%0Aterhadap+N-total+tanah%2C+sedangkan+sistem+olah+tanah+intensif+menghasilkan+nitrat%0D%0A(NO3-)+lebih+tinggi+dibandingkan+sistem+olah+tanah+lainnya.+Pemupukan+nitrogen%0D%0Adengan+dosis+pemupukan+200+kg+N+ha-1+menghasilkan+N-total+tanah+nyata+lebih%0D%0Atinggi+dibandingkan+tanpa+dipupuk+N%2C+dan+pemupukan+N+200+kg+N+ha-1%0D%0Amenghasilkan+nitrat+tanah+(NO3-)+nyata+lebih+tinggi+dibandingkan+tanpa+pupuk+N.%0D%0AInteraksi+antara+pengolahan+tanah+minimum+dengan+pemupukan+nitrogen+dengan%0D%0Adosis+200+kg+N+ha-1+menghasilkan+N-total+nyata+lebih+tinggi+dibandingkan+tanpa%0D%0Apupuk+N%2C+sedangkan+pada+nitrat+(NO3-)+interaksi+antara+pengolahan+tanah+dan%0D%0Apemupukan+N+tidak+berpengaruh+nyata.%0D%0AKata+kunci+%3A+Nitrat%2C+N-total%2C+Pemupukan%2C+Sistem+olah+tanah+konservasi.%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0AAbstract%0D%0A%0D%0A%0D%0ANowday%2C+Indonesia+has+developed+the+application+of+conservation+tillage+systems.%0D%0AHow+tillage+conservation+tillage+criteria+are+minimum+tillage+and+no+tillage%0D%0A(Utomo%2C+1990).+Abdurachman+et+al.+(1998)+explain+that+conservation+tillage%0D%0A(OTK)+is+a+way+of+preparing+land+to+reduce+soil+and+water+loss+due+to+erosion+and%0D%0Aevaporation+compared+by+means+of+conventional+land+preparation.%0D%0AIn+addition+to+conservation+tillage+systems%2C+efforts+to+boost+crop+production+can%0D%0Aalso+be+done+with+fertilization.+Fertilization+is+an+act+of+giving+elements+to+the+soil%0D%0Aor+plants+as+needed+for+the+normal+growth+of+plants+(Pulung%2C+2005).%0D%0AFertilizer+N+is+one+of+the+activities+carried+out+in+the+cultivation+of+land%2C+out+of%0D%0Anecessity+N+available+for+plant+growth+is+not+granted+and+organic-N+in+the+soil+will%0D%0Anot+be+enough+to+meet+the+needs+of+the+plant+(Sanchez%2C+1992).+Fertilization+is%0D%0Aintended+to+supplement+the+nutrients+that+plants+need+to+be+able+to+increase+the%0D%0Aproduction+and+quality+of+the+production+and+quality+of+crops.+N+fertilization+were%0D%0Aperformed+continuously+on+the+previous+season+with+a+conservation+tillage+system%0D%0Acontains+a+higher+soil+N+compared+to+intensive+tillage+(Niswati+et+al.%2C+1994).+Based%0D%0Aon+this+fact+it+is+important+to+know+the+N+content+of+the+soil+in+the+planting+season%0D%0Afor+corn-41.%0D%0AThis+study+aimed+to+determine+the+effect+of+tillage+systems+and+nitrogen%0D%0Afertilization+effect+of+long-term+N-total+and+nitrate+(NO3-)+in+the+soil+at+planting%0D%0Acorn+land+in+Lampung+State+Polytechnic+Experimental+Farm.+The+study+was%0D%0Aconducted+using+a+complete+randomized+block+design+(RAKL)+arranged+in%0D%0Afactorial+with+four+replications.+The+first+factor+in+this+study+is+the+treatment+of%0D%0Atillage+system+(T)+is+T1+%3D+intensive+tillage%2C+T2+%3D+minimum+tillage%2C+T3+%3D+no-tillage%2C%0D%0Aand+the+second+factor+in+this+study+is+a+long-term+fertilizer+nitrogen+(N)%2C+ie+N0+%3D+0%0D%0Akg+N+ha-1%2C+and+N1+%3D+200+kg+N+ha-1.+The+combination+treatment+applied+is%3A+N0T1%2C%0D%0AN1T1%2C+N0T2%2C+N1T2%2C+N0T3%2C+N1T3.%0D%0AIn+each+experimental+plot%2C+soil+samples+were+taken+at+three+points+and+then%0D%0Acomposited.+Soil+sampling+for+nitrate+samples+done+in+the+vegetative+phase%2C+the%0D%0Agenerative+phase+and+after+harvest+of+maize+at+a+depth+of+0-20+cm%2C+while+for+the%0D%0Asample+of+N-total+tillage+done+before+the+growing+season+prior+to+the+soybean+crop%0D%0Aat+a+depth+of+0-5+cm%2C+5+-+10+cm%2C+and+10-20+cm.%0D%0AData+were+analyzed+with+analysis+of+range+and+continued+with+test+Honestly%0D%0ASignificant+Difference+(HSD)+at+the+level+of+5%25.+The+data+obtained+by+the+assay%0D%0ABartllet+tested+homogeneity+and+aditifitasnya+with+Tukey+Test.%0D%0AThe+result+showed+that+the+tillage+system+had+no+effect+on+N-total+land%2C+while+the%0D%0Aintensive+tillage+systems+produce+nitrate+(NO3-)+differ+significantly+higher+than%0D%0Aother+tillage+systems.+Nitrogen+fertilizer+dose+of+fertilizer+200+kg+N+ha-1+produced%0D%0Adifferent+soil+N-+total+significantly+higher+than+without+fertilizer+N%2C+fertilizer+N%0D%0Aand+200+kg+N+ha-1+produced+soil+nitrate+(NO3-)+differs+significantly+higher+than%0D%0Athat+without+fertilizer+N.+Interactions+between+minimum+tillage+with+fertilizer%0D%0Anitrogen+dose+of+200+kg+N+ha-1+produced+significantly+different+N-total+is+higher%0D%0Athan+without+fertilizer+N%2C+whereas+the+nitrate+(NO3-)+interaction+between+tillage%0D%0Aand+N+fertilization+had+no+significant+effect.%0D%0AKeywords%3A+conservation+tillage+systems%2C+fertilizer+N%2C+N-total%2C+Nitrate.&rft.date=2012-03-04&rft.type=Skripsi&rft.type=PeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F1%2FABSTRAK%2520perbaikan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F2%2Fbab%25205.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F3%2Fbab1.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F4%2Fbab2.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F5%2Fbab3.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F6%2Fbab4.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F7%2Fcover.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F8%2FDAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F9%2FDAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F10%2FDAFTAR%2520PUSTAKA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F11%2FLembar%2520Pengesahan%2520Final.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F12%2Fpengesahan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F13%2FRIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F14%2FSANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F15%2Fucapan.pdf&rft.identifier=++0514031018%2C+AYU+DASA+NOVITA++(2012)+PENGARUH+SISTEM+OLAH+TANAH+KONSERVASI+DAN+PEMUPUKAN+NITROGEN+JANGKA+PANJANG+TERHADAP+N-TOTAL+DAN+NITRAT+TANAH+PADA+LAHAN+PERTANAMAN+JAGUNG+(Zea+mays+L.)+DI+KEBUN+PERCOBAAN+POLITEKNIK+NEGERI+LAMPUNG.++UNSPECIFIED.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F12392%2F