Peningkatan Hasil Bawang Merah dan Perubahan Sifat Kimia Tanah dengan Pemupukan Berimbang Semi Organik pada Tanah Inceptisol

Abstract

Increased Yields Onion Plant and Changes of Soil Chemical Properties with Semiorganic Fertilization on Inceptisol Soil Tabanan. Thisexperiment to study the effects of inorganic fertilizer (P) and organic fertilizer (K) on the chemical properties as well as onion yields. A Factorial Randomized Block Design pot Experiment was conducted under Inceptisol soil conditions located at Kerambitan District, Tabanan Regency. The inorganic treatments consisted of P0 (control), P1 (50kg Phonska ha-1 + 200 kg ZA ha-1), P2 (100 kg Phonska ha-1 + 150 kg ZA ha-1), P3 (150 kg Phonska ha-1 + 100 kg.ZA ha-1). The organic treatments consisted of K0 (control), K1 (2 tons ha-1), K2 (4 tons ha-1), K3 (6 tons ha-1). Plant parameters observed including: plant height (cm), maximum number of leaves, maximum number of tubers, fresh and oven dry weight of tubers and hypothetical tubers fresh yields. The observed chemical soil properties including: soil pH and CEC. All data were analyzed using variance analysis and Duncan's test (0.05). The results showed that all fertilization treatments have significant effects on most parameters observed except plant height, soil pH and CEC. The P2K2 (100 kg Phonska ha-1 + 150 kg ZA ha-1) and (4 tons ha-1) treatment resulted in the best effects on the number tubers (7.7 tubers), weight of fresh tubers (37.9 g), tubers dry weight (6.5 g) per pot respectively. The highest hypothetical yields (9.5 tons ha-1) were also found under this treatment as well as the highest soil pH (6.6) and CEC (46.8 me 100g-1 of soil).

Effect of Water Hyacinth Compost and Nitrogen, Phosphorus, Potassium, Sulfur Fertilizers on S-Availability, S-Uptake, and Quality and Yield of Onion (Allium ascalonicum L.) on Inceptisols of Jatinangor

“…The best results on number of tubers, wet weight, and dry weight were obtained from the treatment of ½ compost + ¾ dose of N, P, K, S, the results were 8 saplings, 113.24 g wet weight, and 83.83 g dry weight respectively and not significantly different from compost + ¾ dose N,P,K,S treatment; 1½ compost + ¾ dose of N, P, K, and S; and compost + dose of N, P, K, and S. The addition of N, P, K, and S fertilizer with recorded organic fertilizer can produce higher and different plant height, number of tillers, fresh weight, dry weight of bulbs, and weight of onion stover significantly compared inorganic fertilizer or without treatment. Suwandi et al [18]; Supadma et al [19].…”

Pertumbuhan Kembali dan Hasil Asystasia gangetica Subsp. Micrantha yang Diberi Pupuk Organik Limbah Padat Virgin Coconut Oil dengan Dosis dan Waktu Dekomposisi Berbeda

“…Volume aplikasi pupuk organik yang lebih besar dibandingkan dengan pupuk anorganik membuat petani lebih memilih pupuk anorganik karena biaya transportasi yang lebih murah . Pemakaian pupuk anorganik secara terus menerus dapat merusak sifat fisik, kimia, dan biologi tanah (Supadma, 2006). Alternatif untuk menyuburkan dan memperbaiki tanah dari dampak negatif pupuk anorganik dengan pemakaian pupuk organik.…”

Pemberdayaan Kelompok Tani Pattunggalengan di Kabupaten Takalar melalui inovasi budidaya bawang merah

“…pH tanah pada lahan milik petani agak masam karena masih terdapat bahan organik yang berasal dari pertanaman padi yang dilakukan pada musim rendeng dan gadu 1 sebelumnya. Adanya sisasisa jerami pada batang dan akar yang tertinggal dan melapuk meningkatkan kandungan bahan organik tanah dan berdampak pada perbaikan pH tanah (Supadma et al, 2020). Rasio C/N yang dimiliki jerami sebesar 10,28% dan sangat berpengaruh terhadap dekomposisi bahan organik dan meningkatkan pH tanah karena bahan organik yang bersifat humus dapat mengikat hidrogen (Pane et al, 2014).…”