Kandungan Hara Tanah Dan Tanaman Kelapa Sawit Menghasilkan Terhadap Pemberian Tandan Kosong Kelapa Sawit (TKKS) Dan Kedalaman Biopori

Research aim to of this was to study effect of aplication empty palm oil fruit bunches (EPOFB)and depth biopori treatment on soil and oil palm nutrient content. The research was conducted inPTPN III Kebun Bangun since July- October 2013, used factorial randomized block design with 2factors and 3 replication. The first factor was aplication EPOFB with levels 0, 16, 32 and 48 kg.The second factor was depth biopori with 50, 75 and 100 cm. The results showed that the highestlevel of N-leaf obtained at a depth of 75 cm with biopori without giving EPOFB, the highest levelof N-soil acquired in treatment without giving EPOFB at depth of 50 and 75 cm, the highest palmleaf chlorophyll obtained at aplication 16 kg EPOFB at depth of 50 cm biopor

Maintaining Storability of Shelled Rubber (Hevea Brasilliensis, Muell - Arg) Seed Using Potential Osmotic Solution and Fungicide

Rubber seed will loose its storability in a short time. Seed germination and fungal attack were factors that barrier the storage period. The research aim was to test the ability of the potential osmotic solution and fungicides to reduce seed germination. Completely randomized design with two factors and three replications, i.e: PEG 6000 (w/v): 0%, 15%, 30%, 45%, 60% (potential osmotic solution) and fungicide (active ingredients were pyraclostrobin + metiram ) (g / 1 kg seed): 0 g, 10 g, 20 g, 30 g and 40 g, were applied.The results showed that PEG 30% can inhibit seed germination up to 9.07% and 37.47% and fungicides 40 g/1kg can reduce fungal attack during storage of 12 and 16 days. Combination of PEG-6000 30% and fungicides 40g / 1 kg could maintain seed storability by pressing the seeds germination up to 10.67% and fungal attacks up to 18.00% during storage of 16 days with 96.80% germination

Respon Pertumbuhan Stump Karet (Hevea Brassiliensis Muell Arg.) Terhadap Pemotongan Akar Tunggang Pada Berbagai Komposisi Media Tanam

Salah satu upaya untuk mengatasi tingginya persentase kematian stump yang diakibatkan terhambatnya pertumbuhan akar maka dilakukan pemotongan dan untuk mendukung permasalahan diatas media tanam juga penting untuk pertumbuhan tanaman. Ketersedian tanah subur untuk saat ini sudah sangat sulit karena penggunaan tanah secara terus menerus mengakibatkan adanya pilihan untuk membuka lahan pertanian pada lahan yang marginal. Penelitian dilaksanakan pada bulan Juli hingga November 2014 di Fakultas Pertanian Universitas Sumatera Utara, Medan. Penelitian ini bertujuan untuk mengetahui respon pertumbuhan stump karet terhadap pemotongan akar tunggang pada berbagai komposisi media tanam. Rancangan penelitian yang digunakan adalah rancangan acak lengkap faktorial dengan dua faktor dan tiga ulangan. Faktor pertama adalah pemotongan akar yaitu tanpa pemotongan akar tunggang, pemotongan ¼ dari akar dan pemotongan ½ dari ujung akar dan faktor kedua adalah media tanam yaitu topsoil : pasir 1:0, 1:1, 1:2, 1:3. Hasil penelitian diketahui bahwa pemotongan akar tidak nyata untuk meningkatkan pertumbuhan stump karet. Komposisi media tanam topsoil : pasir (1:2) menurunkan pertumbuhan stump karet secara tidak nyata. Pemotongan akar ¼ dari ujung akar dengan media topsoil menurunkan pertumbuhan stump karet secara tidak nyata

Respons Pertumbuhan Stum Mata Tidur Karet (Hevea Brasiliensis Muell Arg.) Dengan Pemberian Air Kelapa Dan Pupuk Organik Cair

One of the problem encountered in rubber cultivation by rubber budded stump is high deathpercentage of stum in field. The research aim was to obtain useful rubber germ by cococut water soakand liquid organic fertilizer. The research was conduted at Kelurahan Pulo Brayan Bengkel Baru,Kecamatan East Medan (+ 25 meter above sea level) on June to October 2012.Completely randomized design with two factors and three replications. The first factor isthe duration coconut water soak (0, 12, 24 hour) and the second factor is liquid organic fertilizer(0, 20, 40, and 60 cc/plant). Parameters observated were percentage of break bud in field, time of brekbud, height of bud, diameter of bud, amount of leaf, root drived weight, shoot drived weight andpercentage of amount the death of stump at field. The result showed that period of coconut watersoak significantly affect the to percentage of broken bud 2 weeks after plant and the time of brek therubber bedded stump. The liquid organic fertilizer significantly affect to time of break stump, heightof bud, and shoot drived weight. Interaction of coconut water and liquid organic ferlilizer was notsignificantly effect to all paremeters. The best sit of coconut water is 12 hour and dose of liquidorganic fertilizer is 60 cc/plant

Pertumbuhan Stump Karet (Hevea Brassiliensis Muell Arg.) Pada Berbagai Kedalaman Dan Komposisi Media Tanam

Salah satu permasalahan yang dihadapi pada pembibitan stump karet dilapangan ialah tingginya persentase kematian stump (sebesar 15-20%) yang diakibatkan oleh pertumbuhan akar dan tunas yang terhambat. Oleh sebab itu dibutuhkan suatu penelitian untuk mengetahui pertumbuhan stump karet yang ditanam pada berbagai kedalaman penanaman dengan komposisi media tanam yang berbeda. Tujuan penelitian ini untuk mengetahui pertumbuhan stump karet pada berbagai kedalaman dan komposisi media tanam. Penelitian dilaksanakan pada bulan Juli hingga November 2014 di Lahan Percobaan Fakultas Pertanian Universitas Sumatera Utara. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap Faktorial. Faktor pertama adalah kedalaman (di tengah antara mata okulasi dengan pangkal batang, tepat dipangkal batang, di sepertiga dari pangkal batang) dan faktor kedua adalah perbandingan media tanam topsoil dan pasir (1:0, 1:1, 1:2, 1:3).Hasil penelitian menunjukkan bahwa perlakuan kedalaman penanaman stump meningkatkan persentase bertunas, kecepatan melentis, dan jumlah daun, sedangkan perlakuan media tanam meningkatkan kecepatan melentis, diameter tunas dan bobot segar tunas, serta interaksi kedua perlakuan meningkatkan persentase bertunas, panjang tunas, diameter tunas, dan bobot segar akar

Uji Pemberian Peg 6000 Terhadap Morfologi Benih Karet (Hevea Brassiliensis, Muell-arg.) Tanpa Cangkang Setelah Penyimpanan

Giving test of PEG 6000 to morphology of rubber seeds (Hevea brassiliensis, Muell-Arg.) shellesafter storage. Rubber seeds are recalcitrant seeds have a very high water content, low storability, sorapid had deterioration, and therefore required special treatment on the storage period to maintainseed viability. Using PEG 6000 increased storage recalcitrant seeds because it has the potential tolimit cell osmoticum changes in water content and oxygen on seed. The purpose of this study to getthe right PEG 6000 concentration to improve seed storability. The research was conducted inJanuary and March 2012 at the Seed Technology Laboratory, Agricultural Faculty, Sumatera UtaraUniversity, Medan – Indonesia. Randomly complete design was applied with four treatments andfour replications, i.e: PEG 6000 ; 0, 150, 300, 450 (gr/l aquadest). Parameters observed germinateseeds in storage and recapitulation germinate seeds ability after storage. The results showed thatPEG 6000 was significantly on germinated seeds in storage but not siqnificant effect on seedgermination after storage and best result was achieved at PEG 300 gr/l aquades, germinated seedsin storage was 0,33% and recapitulation germinate seeds ability after storage was 80,09%