Pemupukan sebagai Penentu Produktivitas Ubi Jalar
| dc.contributor | en-US | |
| dc.creator | Paturohman, Eman; Pusat Penelitian dan Pengambangan Tanaman Pangan Jl. Merdeka 147 Bogor 16111 | |
| dc.creator | Sumarno, Sumarno; Pusat Penelitian dan Pengambangan Tanaman Pangan Jl. Merdeka 147 Bogor 16111 | |
| dc.date | 2016-06-14 | |
| dc.date.accessioned | 2018-06-04T07:35:37Z | |
| dc.date.available | 2018-06-04T07:35:37Z | |
| dc.description | Sweet potato (Ipomoea batatas L.) is a cosmopolitan crop, grown on 116 countries in the world. A total of 34 countries harvested 200,000 tons or more fresh tuber annually, and 82 countries with a national production less than 200,000 tons per year. China accounted for 68% of the world’s sweet potato production or 90% of the Asian fresh tuber production. The sweet potato productivity varies among countries in the world, from less than 5 t/ha to 24 t/ha, mainly related to the amount use of inorganic fertilizers of N, K, and organic fertilizer. The recommended use of fertilizers for sweet potato is as follow: low to moderate dosage of N (40 to75 kg N/ha), low dossage of P (20-50 kg P2O5/ha), and medium to high dosage of K (75-100 kg K2O/ha), combined with organic manure (3-10 t/ha). Indonesian sweet potato productivity is relatively high as compared to that in other countries in the world with an average of 14.75 t/ha. In the provincial production center, sweet potato productivity ranges from 18 to 22.7 t/ha fresh tuber except in Nusa Tenggara Timur (7.5 t/ha) and Papua (10.9 t/ha). In other provinces, the productivities range from 7.1 to 15.5 t/ha fresh tubers. Commercial sweet potato farming is always carried out under an optimum agroecology condition; however farmers do not always obtain optimum yield due to inoptimum application of fertilizer. Application of the recommended dosage of inorganic fertilizers with the addition of 3 to 5 t/ha organic manure is expected to improve sweet potato productivity to 24-25 t/ha fresh tubers. Improvement on sweet potato productivity will increase the supply of fresh tubers to the markets and thus, increases the sweet potato consumption as a rice substitute. | en-US |
| dc.format | application/pdf | |
| dc.identifier | http://ejurnal.litbang.pertanian.go.id/index.php/ippan/article/view/3506 | |
| dc.identifier.uri | https://repository.pertanian.go.id/handle/123456789/4288 | |
| dc.language | eng | |
| dc.publisher | Puslitbang Tanaman Pangan | en-US |
| dc.relation | http://ejurnal.litbang.pertanian.go.id/index.php/ippan/article/view/3506/2968 | |
| dc.rights | Copyright (c) 2016 Buletin Iptek Tanaman Pangan | en-US |
| dc.source | 1907-4263 | |
| dc.source | Iptek Tanaman Pangan; Vol 10, No 2 (2015): Desember 2015 | en-US |
| dc.title | Pemupukan sebagai Penentu Produktivitas Ubi Jalar | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | Peer-reviewed Article | en-US |