Pertumbuhan dan hasil benih kentang G0 kultivar medians pada berbagai komposisi media tanam dan interval pemberian air di dataran medium
Abstract
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Benih merupakan kunci sukses budidaya kentang. Salah satu faktor yang mempengaruhi dan menjadi kendala produksi kentang di Indonesia adalah ketersediaan benih kentang yang memiliki kualitas dan kuantitas baik serta belum memenuhi kebutuhan permintaan benih petani kentang. Permasalahan produksi benih kentang generasi ke-0 (G0) adalah rendahnya jumlah ubi benih yang dihasilkan. Percobaan ini bertujuan untuk mengetahui interaksi antara komposisi media tanam dengan interval pemberian air terhadap produksi benih kentang G0 di dataran medium. Percobaan dilaksanakan di Kebun Percobaan, Fakultas Pertanian, Universitas Padjadjaran, Kampus Jatinangor. Rancangan percobaan yang digunakan yaitu Split Plot. Petak utama adalah komposisi media tanam yang terdiri dari campuran tanah:kompos:arang sekam:cocopeat (2:1:1:1, 3:1:1:1, dan 4:1:1:1) ), dan anak petak adalah interval pemberian air (1, 2, dan 3 hari sekali). Hasil penelitian menunjukkan tidak terdapat interaksi antara komposisi media tanam dan interval pemberian air terhadap pertumbuhan dan hasil benih kentang G0 kultivar Medians di dataran medium. Komposisi media tanah:kompos:arang sekam:cocopeat (3:1:1:1) memberikan nilai rata-rata tertinggi terhadap konduktansi stomata, tinggi tanaman, luas daun, bobot kering tanaman, jumlah stolon, persentase stolon membentuk ubi, jumlah ubi, (6,55 knol/ tanaman) dan bobot ubi G0 (31,72 g/tanaman) yang lebih tinggi bila dibandingkan dengan komposisi lainnya. Interval pemberian air dua hari sekali menunjukkan nilai tertinggi terhadap tinggi tanaman, luas daun, bobot kering tanaman, jumlah ubi G0 yang lebih banyak yaitu (5,67 knol/tan) dan bobot ubi yang lebih tinggi (29,39 g/tan) dibandingkan dengan interval pemberian 1 dan 3 hari sekali.
Kata Kunci: benih kentang G0, komposisi media, interval pemberian air, dataran medium
Abstract
Seeds are the key to successful potato cultivation. One of the factors that affect and become a problem production potato in Indonesia is the lack of availability of good potato seeds in quality and quantity,that way it does not supply requirement. Among the problems in potato seed production of the 0th generation (G0) were low number of tuber produced. In connection with this, it is necessary to carry out an integrated study between the environmental engineering of the planting media and the water supply interval. This study aimed to know interaction between composition of planting medium with watering interval to production potato seeds G0 in medium land.The experiment was carried out at the experimental field, Faculty of Agriculture, Padjadjaran University, Sumedang. The experiment used Split plot Design. The main plot was the growing media compositions, composed by soil:compost:husk charcoal:cocopeat (2:1:1:1, 3:1:1:1, and 4:1:1:1). The sub plot was interval of watering (1, 2, and 3 day). The experimental results showed that there was no interaction effect of the growing media compositions and interval of watering. Compositions of soil:compost:husk charcoal:cocopeat (3:1:1:1) showed the plant height, leaf area, dry weight, number of stolons, the percentage of stolon becomes tuber, number of tubers (6.55 knol/plant), and weight of tuber per plant (31.72 g/plant) were higher than others. The interval of watering 2 day showed the plant height, leaf area, dry weight, produce numbers of tubers ( 5.67 knol/plant), and weight of tubers per plant (29.39 g/plant) were higher than interval 1 and 3 days.
Keywords: G0 potato seed, media compositions, watering interval, medium lands
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DOI: https://doi.org/10.24198/kultivasi.v19i3.30583
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