Pemanfaatan Pupuk Organik Cair dan Teknik Penanaman Dalam Peningkatan Pertumbuhan dan Hasil Kentang

Kentang merupakan salah satu komoditi hortikultura yang kebutuhannya sangat tinggi di pasaran. Namun saat ini produktivitas kentang masih kurang bagus dan masih dibutuhkan suatu tindakan, sehingga produktivitasnya tinggi. Rendahnya produktivitas di antaranya disebabkan pengelolaan budidaya yang belum optimal. Penelitian bertujuan untuk mendapatkan dosis pupuk organik cair dan teknik penanaman yang tepat untuk meningkatkan pertumbuhan dan produksi tanaman kentang. Penelitian dilakukan di Kebun Percobaan Berastagi dengan ketinggian tempat 1.340 m dpl., jenis tanah Andisol yang dilaksanakan dari Bulan Agustus sampai Nopember 2012. Percobaan menggunakan rancangan acak kelompok pola faktorial dengan empat ulangan. Perlakuan terdiri atas dua faktor, faktor I ialah dosis pupuk organik cair (C0 = tanpa pupuk organik cair, C1 = pupuk organik cair 3 ml/l air, C2 = pupuk organik cair 6 ml/l air, dan C3 = pupuk organik cair 9 ml/l air) dan faktor 2 ialah teknik penanaman (T1 = tanpa mulsa, T2 = memakai mulsa). Hasil penelitian menunjukkan bahwa pupuk organik cair dengan dosis 6 ml/l air dan teknik penanaman dengan mulsa dapat meningkatkan pertumbuhan vegetatif tanaman kentang sebesar 84,48 dan 98,68% pada umur 1bulan setelah tanam dan 2 bulan setelah tanam. Teknik penanaman kentang menggunakan mulsa dapat menekan serangan penyakit Phytophthora infestans sebesar 32,25% dibandingkan penanaman tanpa mulsa. Pemberian pupuk organik cair dengan dosis 6 ml/l air dan penanaman menggunakan mulsa dapat meningkatkan produksi per plot (95,27%) dan persentase kelas umbi besar (44,27 – 128,77%), serta mengurangi kelas umbi kecil (60,93 – 119,04%)

Increasing the quantity and quality of potatoes by utilizing seed size and fish organic fertilizer

Potato plants are one of the vegetables that are in great demand by consumers so they have high economic value and needs. The fulfillment of high needs must be accompanied by increased productivity. Increased potato production can be done, among others, by the use of seeds and proper fertilization. This study aims to determine the use of seed size and addition of fish organic fertilizer with inorganic fertilizer efficiency in increasing potato growth and yield. The study is carried out from June until September 2019 in research and assessment installation of agricultural technology, Dolat Rayat District, Karo Regency. The research placed altitude is ± 1,340 m above sea level, and the soil type is Andisol. The research design is a factorial randomized block and consists of three replications. The first-factor treatment is seed size (big >20 g, medium 5-20 g, small <5 g). The second factor is a fish organic fertilizer with efficiency inorganic fertilizer (100% inorganic fertilizer, 50% fish organic fertilizer + 75% inorganic fertilizer, 100% fish organic fertilizer + 50% inorganic fertilizer, and 150% fish organic fertilizer + 25% inorganic fertilizer). The result showed that big and medium seed sizes were able to increase potato growth and yield. Big and medium seed sizes were able to increase plant height by 11.06% and 9.63%, 5,73%, and 4,64% canopy width, 7.30%, and 11.10% leaf area index, and 12.62% and 25.06% yields from small seed size. Adding fish fertilizer with inorganic fertilizer efficiency resulted in growth and yield which is no different from the application of 100% inorganic fertilizer

Increasing the quantity and quality of potatoes by utilizing seed size and fish organic fertilizer

Potato plants are one of the vegetables that are in great demand by consumers so they have high economic value and needs. The fulfillment of high needs must be accompanied by increased productivity. Increased potato production can be done, among others, by the use of seeds and proper fertilization. This study aims to determine the use of seed size and addition of fish organic fertilizer with inorganic fertilizer efficiency in increasing potato growth and yield. The study is carried out from June until September 2019 in research and assessment installation of agricultural technology, Dolat Rayat District, Karo Regency. The research placed altitude is ± 1,340 m above sea level, and the soil type is Andisol. The research design is a factorial randomized block and consists of three replications. The first-factor treatment is seed size (big >20 g, medium 5-20 g, small <5 g). The second factor is a fish organic fertilizer with efficiency inorganic fertilizer (100% inorganic fertilizer, 50% fish organic fertilizer + 75% inorganic fertilizer, 100% fish organic fertilizer + 50% inorganic fertilizer, and 150% fish organic fertilizer + 25% inorganic fertilizer). The result showed that big and medium seed sizes were able to increase potato growth and yield. Big and medium seed sizes were able to increase plant height by 11.06% and 9.63%, 5,73%, and 4,64% canopy width, 7.30%, and 11.10% leaf area index, and 12.62% and 25.06% yields from small seed size. Adding fish fertilizer with inorganic fertilizer efficiency resulted in growth and yield which is no different from the application of 100% inorganic fertilizer