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EFIKASI HERBISIDA NABATI 1,8-CINEOLE TERHADAP GULMA PADA PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq.) MENGHASILKAN Kurniastuty, Citra Bara; Sembodo, Dad Resiworo J.; Rini, Maria Viva; Pujisiswanto, Hidayat
Jurnal Agrotek Tropika Vol 5, No 1 (2017)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Gulma menjadi salah satu kendala yang dapat menghambat pertumbuhan tanaman kelapa sawit. Pengendalian gulma yang dilakukan adalah menggunakan herbisida nabati berbahan aktif 1,8-cineole. Penelitian ini bertujuan untuk menentukan dosisherbisida nabati 1,8-cineole yang efektif mengendalikan gulma di perkebunan kelapa sawit menghasilkan, mengetahui efektivitas herbisida nabati 1,8-cineole dibandingkan herbisida paraquat dalam mengendalikan gulma di perkebunan kelapa sawit menghasilkan, dan mengetahui pengaruh herbisida nabati 1,8-cineole terhadap tanaman kelapa sawit menghasilkan. Penelitian ini dilaksanakan di Desa Sidomukti, Kecamatan Natar, Kabupaten Lampung Selatan, dan Laboratorium Gulma Fakultas Pertanian Universitas Lampung pada bulan Februari â€“ Mei 2016. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan 9 perlakuan yaitu 1,8-cineole dengan dosis (3,0; 4,5; 6,0; 7,5; 9,0; 10,5 g/ha), herbisida paraquat dengan dosis 900 g/ha, penyiangan mekanis, dan kontrol (tanpa pengendalian) dengan 3 ulangan. Homogenitas ragam diuji dengan menggunakan uji Bartlett dan additivitas data diuji dengan uji Tukey. Perbedaan antar nilai tengah diuji menggunakan uji BNT pada taraf 5%. Hasil penelitian menunjukkan bahwa Herbisida 1,8-cineole pada dosis 3,0 â€“ 10,5 g/ha efektif mengendalikan gulma total, gulma golongan daun lebar, dan gulma golongan rumput sampai 8 MSA, bahkan pada dosis yang sama efektif mengendalikan gulma golongan teki sampai 12 MSA. Herbisida 1,8-cineole pada dosis 9,0 â€“ 10,5 g/ha mampu mengendalikan gulma setara dengan tingkat pengendalian dengan herbisida paraquat 900 g/ha sampai 8 MSA. Aplikasi herbisida 1,8-cineole pada dosis 3,0 â€“ 10,5 g/ha tidak meracuni tanaman kelapa sawit menghasilkan.

Efikasi Herbisida Isopropilamina Glifosat Dalam Mengendalikan Gulma Perkebunan Karet (Hevea Brasiliensis) Belum Menghasilkan Pamungkas, Hendi; Sembodo, Dad R.J.; Evizal, Rusdi; Pujisiswanto, Hidayat
Jurnal Penelitian Pertanian Terapan Vol 18, No 2 (2018)
Publisher : Politeknik Negeri Lampung.

Karet (Hevea brasiliensis) merupakan tanaman perkebunan penting di Indonesia karena produknya digunakan sebagai bahan baku industri karet dan sumber devisa negara. Keberadaan gulma pada lahan karet menyebabkan terjadinya persaingan sarana tumbuh dan mempengaruhi pertumbuhan tanaman karet. Salah satu bahan aktif herbisida yang umum digunakan untuk mengendalikan gulma pertanaman karet TBM adalah isopropilamina glifosat. Penelitian ini bertujuan untuk (1) mengetahui dosis herbisida isopropilamina glifosat yang efektif mengendalikan gulma pada pertanaman karet TBM, (2) mengetahui perubahan komposisi gulma akibat aplikasi herbisida isopropilamina glifosat, (3) mengetahui apakah terjadi fitotoksisitas tanaman karet akibat aplikasi herbisida isopropilamina glifosat. Penelitian ini dilakukan di kebun karet rakyat di desa Marga Agung, Kecamatan Jati Agung, Kabupaten Lampung Selatan dan Laboratorium Gulma Fakultas Pertanian Universitas Lampung pada November 2016 hingga Maret 2017. Penelitian ini menggunakan rancangan acak kelompok (RAK) dengan empat ulangan dan enam taraf perlakuan yaitu dosis herbisida isopropilamina glifosat 796,5 g/ha (P1), 1062 g/ha (P2), 1327,5 g/ha (P3), 1593 g/ha (P4), penyiangan mekanis (P5), dan tanpa pengendalian/control (P6). Homogenitas ragam data diuji dengan uji Bartlett, additivitas data diuji dengan uji Tukey, dan perbedaan nilai tengah perlakuan diuji dengan uji Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa: (1) herbisida isopropilamina glifosat dosis 796,5 – 1593 g/ha efektif mengendalikan gulma total, gulma rumput hingga 12 MSA dan gulma teki hingga 4 MSA, serta dosis 1593 g/ha efektif mengendalikan gulma daun lebar hingga 8 MSA, (2) dosis 1327,5 – 1593 g/ha efektif mengendalikan gulma Ottochloa nodosa hingga 12 MSA dan Commelina diffusa hingga 4 MSA, (3) dosis 796,5 – 1593 g/ha efektif mengendalikan gulma Cyperus brevifolius hingga 4 MSA, serta dosis 1593 g/ha efektif mengendalikan gulma Asystasia gangetica hingga 8 MSA, (4) dosis 796,5 – 1593 g/ha menyebabkan terjadinya perubahan komposisi gulma pada 4, 8, dan 12 MSA, (5) dosis 796,5 – 1593 g/ha tidak meracuni tanaman karet. Kata kunci: Gulma, herbisida, isopropilamina glifosat, karet

Growth Performance of Mature Trees Resulted from Intra and Inter-specific Grafting on Robusta Coffee Evizal, Rusdi; Sugiatno, Sugiatno; Utomo, Setyo Dwi; Pujisiswanto, Hidayat; Widagdo, Setyo; Prasmatiwi, Fembriarti Erry; Stiawan, Aresta Dwi
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 2 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.083.77-83

To improve yield and cup quality, mature coffee tree as rootstock could be grafted with scion of selected genotype. This research aimed to study growth performance of mature trees resulted from intra and inter-specific grafting on Robusta coffee. The research was arranged in Randomized Complete Block Design with 3 replications. There were 12 treatments of entrees/under-stump genotype for coffee grafting including 8 treatments of intraspecific local Robusta/Robusta grafting and 4 treatments of interspecific coffee grafting of Robusta/Liberica and Arabica/Robusta. The results showed that intraspecific grafting of Robusta/Robusta, Robusta/Liberica, and Arabica/Robusta resulted in grafting mortality of 9.8%, 10.9%, and 24.8%, respectively. Until 28 weeks after grafting, branch growth variables were significantly affected by scion/rootstock of Robusta/Robusta, Robusta/Liberica, and Arabica/Robusta grafting. Grafted Arabica/Robusta coffee showed the poor growth performance. In second year of Robusta/Robusta and Robusta/Liberica growth, generative growth of cherry inflorescence per branch and number of cherries per inflorescence were not affected by scion and rootstock genotypes. Leaf and branch growth were very important variables correlating with other variables.

Efikasi Herbisida Isopropilamina Glifosat Dalam Mengendalikan Gulma Perkebunan Karet (Hevea Brasiliensis) Belum Menghasilkan Pamungkas, Hendi; Sembodo, Dad R.J.; Evizal, Rusdi; Pujisiswanto, Hidayat
Jurnal Penelitian Pertanian Terapan Vol 18, No 2 (2018)
Publisher : Politeknik Negeri Lampung.

Rubber (Hevea brasiliensis) is an important plantation crop in Indonesia because its products are used as raw material for rubber industry and source of stock-exchange. The existence of weeds on the rubber land causes competition of growing facilities and affect the growth of rubber plants. One of the most common herbicide active ingredients that used to control immature plant weeds is isopropylamine glyphosate. This research aims to (1) find out the dose of isopropylamine glyphosate herbicide that effectively control weeds in immature rubber cultivation, (2) to know the change of weed’s composition due to the application of isopropylamine glyphosate herbicide, (3) to know whether the phytotoxicity of rubber plants occurs due to isopropylamine glyphosate herbicide application. This research was conducted in smallholder rubber plantation in Marga Agung Village, Jati Agung Subdistrict, South Lampung Regency and Weed Laboratory of Agriculture Faculty of Lampung University from November 2016 until March 2017. This research used randomized block design (RAK) with four replicates and six treatment levels dose of herbicide isopropylamine glyphosate herbicide 796,5 g/ha (P1), 1062 g/ha (P2), 1327.5 g/ha (P3), 1593 g/ha (P4), mechanical weeding (P5), and without restraint/control (P6). The homogeneity of various data was tested by Bartlett test, the data additivity was tested by Tukey test, and the difference of median treatment was tested by Least Significant Different (LSD) test at 5% level. The results showed that: (1) isopropylamine glyphosate herbicide dose 796,5 – 1593 g/ha effectively controlling total weeds, grass weeds up to 12 weeks after application and nut grass weeds up to 4 weeks after application, and dose 1593 g/ha effectively controlling leaf weeds up to 8 weeks after application, (2) dose 1327,5 – 1593 g/ha effectively controlling Ottochloa nodosa weeds up to 12 weeks after application and Commelina diffuse up to 4 weeks after application, (3) dose 796,5 – 1593 g/ha effectively controlling Cyperus brevifolius weeds up to 4 weeks after application, and doses of 1593 g/ha effectively controlling Asystasia gangetica weeds up to 8 weeks after application, (4) doses of 796,5 – 1593 g/ha resulted in changes in weed’s composition at 4, 8, and 12 weeks after application, (5) doses 796,5 – 1593 g/ha does not poison the rubber plant.

Pengaruh Aplikasi Glifosat terhadap Efikasi dan Komposisi Gulma Pertanaman Kelapa Sawit Tanaman Menghasilkan Muda Oktavia, Kurnia; Pujisiswanto, Hidayat; Evizal, Rusdi; Susanto, Herry
Jurnal Agro Industri Perkebunan Volume 7 No. 1, 2019
Publisher : Politeknik Negeri Lampung

This study aimed to obtain the effective dose of isopropylamine glyphosate herbicide for controlling weeds in oil palm plantation andto study the change of weed composition after glyphosate application in early producing oil palm plantation.The research was conducted in smallholder oil palm plantation located in Srimulyo Kenanga Sari Village, Seputih Surabaya Sub-district, Central Lampung Regency and Weed Science Laboratory of Agriculture Faculty, Lampung University from November 2017 to January 2018. This research used randomized block design (RBD) with 4 replications and 7 treatments of 5 isopropylamine glyphosate herbicide doses (1.080, 1.440, 1.800, 2.160, and 2.520 g.ha-1), mechanical weeding, and control. The data homogeneity tested by Bartlett test, the data additivity tested by Tukey test, and the difference of median value tested by the Least Significant Difference (LSD) at 5% level. The results showed that all of isopropylamine glyphosate herbicide doses were effective in controlling total weeds, grassy weeds (Axonopus compressus, Ottochloa nodosa, Imperata cylindrica) and nutsedges (Cyperus rotundus) for 4—12 weeks after application (WAA) and broadleaf weeds (Praxelis clematidea) for 4 WAA. Glyphosate application changed weed composition at 4, 8, and 12 WAA of observations from grassy weeds to broadleaf weeds. Keywords: composition, efficacy, herbicide, glyphosate, oil palm, weeds

Response of Growth and Results of Sweet Corn Plants (Zea mays Saccharata Sturt.) To the Effect of Dosage and Time of Fertilizing Bio-slurry Liquid Fertilizers Oktavia, Vina; Pujisiswanto, Hidayat; Edy, Akari; Andalasari, Tri Dewi
Jurnal Penelitian Pertanian Terapan Vol 18, No 2 (2018)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v18i2.1237

The study aimed to was determine the effect of dose and time of fertilization bio-slurry liquid fertilizer on the growth and yield of sweet corn was held in Tanjung Laut, Fajar Baru village, Jati Agung district, South Lampung regency in October 2016 to January 2017. In this study used Randomized Block Design (RBD) with factorial treatment design (4 x 2) with three replications. The first factor was the dose of bio-slurry liquid fertilizer consisted 4 levels were 0, 25, 50, and 75 l/ha. The second factor was the fertilization time consisted of 2 levels were (2 and 4 MST) and (2, 4, and 6 MST). Variance of homogeneity was tested by Bartlett's test, if the assumptions were met, the data were analyzed by variance using F-test. The difference of median value of treatment will be tested by the Least Significance Difference Test (LSD) at 5% level. The results showed that the treatment of several doses of bio-slurry liquid fertilizer has an effect on the length of cob, while the treatment of some fertilization time has an effect on dry weight variables. However, the treatment of some dose levels and fertilization time of bio-slurry liquid fertilizer has not been able to increase growth and yield. Proper fertilization time does not depend on the dose of bio-slurry liquid fertilizer given in influencing the growth and yield of sweet corn crops.

Effect of Acetic Acid as Pre-Emergence Herbicide on Maize Germination Pujisiswanto, Hidayat; Yudono, Prapto; Sulistyaningsih, Endang; Sunarminto, Bambang Hendro
Jurnal Penelitian Pertanian Terapan Vol 15, No 1 (2015)
Publisher : Politeknik Negeri Lampung.

Profitable crop production starts with a weed control program that includes pre-emergence herbicides to deliver long-lasting, residual weed control. Pre-emergence herbicides are applied to prevent the germination of weed seeds. The study was conducted to determine the effect of acetic acid as a pre-emergence herbicide on maize germination. Pots experiment was conducted on August until September 2012. The experimental design used was Completely Randomized Design (CRD) single factor in four replicates. The application of pre-emergence acetic acid at several concentration, i.e. control (no acetic acid) 0%, 10% acetic acid and 20% acetic acid. The result showed that the pre-emergence aplication at 10% and 20% of the glacial acetic acid solution lowered pH were 5,12 and 5,43 respectively at one week after application, so that inhibited maize germination. No shoots and roots were grew. This was due to the increase of electrical conductivity (EC) or electrolyte leakage caused by the high permeability of the damaged membrane of seed. The EC of control treatment was 11?S/cm g, compared to 10 and 20% treatment of acetic acid were 36 ?S / cm g and 55 ?S / cm g EC respectively. Increasing concentration of acetic acid caused the higher of protein content leaked, i.e. 7,95%, 7,32% and 7,03% respectively for without acetic acid treatment, 10% and 20% acetic acid. Acetic acid also inhibited respiration rate of maize seed, where the higher concentration of acetic acid produced the lower respiration rate, i.e. 31.63 mg/g/hour, 12.38 mg/g/hour and 2,75 mg/g/hour respectively for without acetic acid treatment, 10% and 20% acetic acid. Keywords : Acetic Acid, Maize (Zea mays L.), Germination, Pre-Emergence Herbicide

Pengaruh Fermentasi Limbah Cair Pulp Kakao terhadap Tingkat Keracunan dan Pertumbuhan Beberapa Gulma Berdaun Lebar Pujisiswanto, Hidayat
Jurnal Penelitian Pertanian Terapan Vol 12, No 1 (2012)
Publisher : Politeknik Negeri Lampung.

The research was conducted to determine the effect of fermentation liquid waste cocoa pulp on the level of toxicity and growth some broad-leaved weeds. Experiments conducted in Way Halim, Sukarame, Bandar Lampung. The timing of the trial starting from June to July 2011. The design used was Randomized Design Group (RAK) with one factor, namely the time of fermentation of cocoa pulp effluent, namely: 1 week, 2 weeks, and 3 weeks. Each treatment was repeated thrice. Weed seeds used are young or vegetative phase. The results showed: (1) The Liquid waste cocoa pulp on the fermentation 2 and 3 weeks are able to control the growth of broad leaf weeds up to 4 MSA, visible from suppression the dry weight of weeds and levels of toxicity. (2) Fermentation 1-3 weeks to control weed growth Cleome rutidospermae DC and Agerotum conyzoides, while the other weeds that can be controlled with Asystasia gangética fermentation 3 weeks and Synedrella nudiflora able to be controlled by the fermentation of 2 and 3 weeks up to 4 MSA (3) Toxicity caused by the fermentation of cocoa pulp liquid waste is contact to visible blotches and burning weeds on the affected part. Keywords: broadleaf weeds, cocoa pulp, fermentation

PENGARUH SISTEM OLAH TANAH DAN KOMBINASI PUPUK MAJEMUK NPK DENGAN KOMPOS TERHADAPPERTUMBUHAN DANBIOMASA GULMAPADA PERTANAMAN KACANG HIJAU (Phaseolus radiatus L.) Julaili, Sirot; Lumbanraja, Jamalam; Pujisiswanto, Hidayat; Sarno, Sarno
Jurnal Agrotek Tropika Vol 7, No 3 (2019): JAT September 2019
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Keberadaan gulma pada lahan budidaya kacang hijau dapat menyebabkan terjadinya persaingan sarana tumbuh serta mempengaruhi pertumbuhan dan produksi tanaman kacang hijau. Salah satu upaya yang dapat dilakukan untuk mengendalikan gulma adalah pengolahan tanah. Penelitian ini bertujuan untuk mengetahui pengaruh sistem olah tanah dan pemupukan terhadap pertumbuhan gulma dan produksi tanaman.Penelitian dilaksanakan di Laboratorium Lapang Terpadu, Fakultas Pertanian, Universitas Lampung dari bulan april 2016 sampai dengan Januari 2017. Analisis gulma dilakukan di Laboratorium Ilmu Tanah, Fakultas Pertanian, Universitas Lampung. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial yang terdiri dari dua faktor, sistem olah tanah yang terdiri dari: olah tanah minimum dan olah tanah sempurna, dan pemupukan yang terdiri dari: kombinasi pupuk majemuk NPK 200 kg ha -1 dengan 1 Mg ha -1 kompos dan tanpa pemupukan. Setiap perlakuan diulang 4 kali. Seluruh data yang diperoleh dianalisis dengan menggunakan Analisis Ragam. Homogenitas ragam diujidengan Uji Bartlet, jika asumsi terpenuhi data dianalisis dengan sidik ragam menggunakan Uji F, perbedaan antar nilai tengah perlakuan diuji dengan BNT pada taraf 5%. Hasil penelitian menunjukkan bahwaJenis gulma yang dominan pada pengamatan 3 MST adalah gulma Rottboellia exaltata dan 6 MST adalah Synedrella nodiflora pada semua perlakuan. Perlakuan olah tanah minimum memberikan bobot kering gulma daun lebar dan Asystasia gangetica yang lebih tinggi dibandingkan perlakuan lainnya di 3 MST, sedangkan pada 6 MST perlakuan olah tanah minimum memberikan bobot kering gulma Asystasia gangetica lebih tinggi di bandingkan perlakuan lainnya. Perlakuan pemupukan pupuk majemuk NPK 200 kg ha -1 dan kompos 1 Mg ha -1 berpengaruh terhadap bobotkering gulma total, daun lebar, rumput, gulma Rottboellia exaltata dan gulma Synedrella nodiflora yang lebih tinggi dibandingkan perlakuan lainnya di 3 MST. Terdapat interaksi antara pengolahan tanah dan pemupukan terhadap tinggi tanaman kacang hijau, dimana interaksi antara perlakuan olah tanah minimum + pemupukan menunjukan tanaman kacang hijau paling tinggi dibandingkan dengan 3 interaksi perlakuan lainnya.

INCIDENCE DYNAMIC OF POD ROT DISEASE OF COCOA CLONES IN LAMPUNG, INDONESIA Evizal, Rusdi; ,, Sugiatno; ,, Ivayani; Pujisiswanto, Hidayat; Wibowo, Lestari; Erry Prasmatiwi, Fembriarti
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 2 (2018): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Incidence dynamic of pod rot disease of cocoa clones in Lampung, Indonesia. The declining of production and productivity of cocoa in Indonesia might due to pests and diseases attacks and planting unselected clones. Dynamic of pod rot incidence was important to plan pest controlling. To study dynamic incidence of some cocoa clones, a research was conducting in Pesawaran District, a centre of cocoa production in Lampung. A farmer cocoa plot under agro-forestry system was selected which had been upgrading in 2014 by pruning and side-grafting with national clones including Sul 1, MCC 1, MCC 2, ICCRI 7 and selected local clone named T1, T2, and T3. The results showed that pod rot incidence occurred along the year of observation. For immature pod, pod rot incidence was dynamic and varied among months and clones. There was high pod rot incidence every months for particular clone. National clone Sul1 and local clone T3 exhibited more tolerant to pod rot disease than other clones. Clones Sul1 and T3 also produced more pod than others. High incidence of pod rot occurred on fruit stage of cherelle (incidence 38.7%) and small pod (incidence 18.8%) that well known as cherelle wilt symptom.

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