?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=MODIFIKASI+INLINE+EMITTER+UNTUK+SISTEM+IRIGASI+TETES%0D%0ABAWAH+PERMUKAAAN+TANAH+(SUBSURFACE)&rft.creator=0714071012%2C+Muhammad+Fadil+Hakim&rft.subject=+&rft.description=Abstrak%0D%0A%0D%0AIrigasi+tetes+bawah+permukaan+tanah+(subsurface+irrigation)+mempunyai+efisiensi%0D%0Airigasi+relatif+lebih+tinggi+dibandingkan+dengan+efisiensi+sistem+irigasi+yang+lain%2C%0D%0Akarena+sistem+irigasi+tetes+ini+hanya+memberikan+air+pada+daerah+perakaran%0D%0Atanaman%2C+sehingga+mengurangi+kehilangan+air+irigasi.+Namun+dalam+penerapan%0D%0Airigasi+tetes+ini+masih+ditemui+banyak+kendala%2C+terutama+pada+distribusi+aliran+air%0D%0Adan+pola+pembasahan+tanah+yang+tidak+seragam+dikarenakan+emitter+tersumbat%0D%0Aoleh+partikel-partikel+kecil+seperti+debu%2C+pasir%2C+lumut+yang+terbawa+di+dalam%0D%0Aaliran+irigasi.+Selain+itu%2C+sistem+ini+hanya+dapat+diaplikasikan+oleh+para+petani%0D%0Aatau+pengusaha+dengan+modal+yang+besar.%0D%0APenelitian+ini+bertujuan+merancang+sistem+irigasi+tetes+sederhana+dengan+penetes%0D%0Ajenis+inline+emitter%2C+dengan+menggunakan+komponen+lokal%2C+uji+kinerja+sistem%0D%0Airigasi+tetes%2C+dan+menganalisa+pola+distribusi+pembasahan+tanah.%0D%0APenelitian+menggunakan+emitter+dari+kain+TC+(Totteron+Cotton)+dengan%0D%0Apenggunaan+tanpa+bahan%2C+3+lapis%2C+sirip+10+cm+dan+sirip+15+cm+dengan+head%0D%0Aoperasi+100+cm+dan+200+cm.+Uji+coba+sistem+rancangan+sistem+irigasi+dilakukan%0D%0Adengan+menggunakan+cara+penempatan+emitter+di+bawah+permukaan+tanah%0D%0A(subsurface).%0D%0AHasil+yang+diperoleh+menunjukan+penggunaan+rancangan+dengan+modifikasi+sirip%0D%0A10+cm+menghasikan+nilai+keseragaman+penyebaran+air+terbaik+dengan+spesifikasi%0D%0Aemitter+sebagai+berikut+%3A+Debit+(q)+%3D+18%2C4+l%2Fjam%3B+Koefisien+variasi+penates+(Cv)+%3D%0D%0A0%2C31+%3B+Emission+Uniformity+(EU)+%3D+75%2C4+%25%3B+coeficient+of+discharge+(Kd)+%3D+18%2C4+%3B%0D%0Aeksponen+(x)+%3D+0%2C75+dengan+tipe+emitter+orrifice+drippers.+Keseragaman%0D%0Apenyebaran+pada+sub-+unit+dalam+rancangan+ini+adalah+71%2C5+%25+dengan+rata-rata%0D%0Apembasahan+subsurface+adalah+3%2C9+m+sepanjang+bedengan+penanaman+(5+m)%0D%0Adengan+kadar+air+berkisar+antara+30%25+-+48%25+pada+1+jam+pemberian+air.+Kisaran%0D%0Aini+masih+berada+diantara+kapasitas+lapang+dan+titik+layu+permanen.%0D%0AKata+kunci+%3A+irigasi+tetes+sederhana%2C+emitter%2C+kain+%E2%80%9CTC%E2%80%9D%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0AAbstract%0D%0A%0D%0ASubsurface+drip+irrigation+has+a+relatively+higher+efficiency+level+compared+with%0D%0Aother+irrigation+systems%2C+because+it+gives+water+only+in+plant+root+areas%2C+so+that+it%0D%0Areduces+water+lost+in+irrigation.+However%2C+the+conduct+of+this+irrigation+system%0D%0Adeals+with+many+problems%2C+mainly+in+water+flow+distributions+and+soil+wetting%0D%0Apatterns+that+are+not+uniformed+because+emitters+are+clogged+by+tiny+particles+such%0D%0Aas+dust%2C+sand%2C+alga+brought+along+the+irrigation+flows.+More+over%2C+subsurface%0D%0Airrigation+can+only+be+applied+by+farmers+or+businessmen+with+larger+capitals.%0D%0AThe+objective+of+this+research+were+to+design+simple+subsurface+drip+irrigation%0D%0Awith+in-line+emitter+dripper+type%2C+using+local+component%2C+to+test+performance+of%0D%0Adrip+irrigation+system%2C+and+to+analyze+the+patterns+of+soil+wetting+distribution.%0D%0AThis+research+used+emitter+from+TC+(totteron+cotton)+cloth+without+additional%0D%0Amaterials%2C+3+layers%2C+10+cm+and+15+fins+with+100+cm+and+200+cm+operational+heads.%0D%0AThe+irrigation+system+test+was+conducted+by+placing+emitter+in+subsurface.%0D%0AThe+results+shows+that+the+use+of+designs+with+10+cm+fin+modification+results+in%0D%0Abest+uniformity+of+water+distribution+with+the+following+emitter+specification%3A%0D%0Adischarge+(q)+%3D+18.4+l%2Fhour%2C+dripper+variance+coefficient+(Cv)+%3D+0.31%2C+emission%0D%0Auniformity+(EU)+%3D75.4%25%2C+coefficient+of+discharge+(Kd+)+%3D+18.4%2C+exponent+(x)+%3D%0D%0A0.75+with+orrifice+dripper+emitter+type.+The+uniformity+of+distribution+in+sub+unit%0D%0Aof+this+design+was+71.5%25+with+3.9+m+average+of+wetting+along+planting+plot+(5+m)%0D%0Awith+water+content+ranging+from+30%25+to+48%25+in+one+hour+of+irrigation.+This+range%0D%0Awas+still+in+range+between+field+capacity+and+permanent+withering+point.%0D%0AKeywords%3A+simple+drip+irrigation%2C+emitter%2C+TC+cloth&rft.date=2012-02-03&rft.type=Skripsi&rft.type=PeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12532%2F1%2FAbstract.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12532%2F2%2FABSTRAK%2520BAHASA%2520INDONESIA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12532%2F3%2FBAB%2520I.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12532%2F4%2FBAB%2520II.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12532%2F5%2FBAB%2520III.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F12532%2F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