Pengelolaan Hara Kalium Berdasarkan Batas Kritis Untuk Tanaman Jagung (Zea mays L.) Pada Berbagai Status Hara di Tanah Inceptisol
| Main Author: | Putra, Irwan Agusnu |
|---|---|
| Other Authors: | Hanum, Hamidah, Hanum, Chairani |
| Format: | Masters |
| Bahasa: | ind |
| Subjects: | |
| Online Access: |
http://repository.usu.ac.id/handle/123456789/28015 |
Daftar Isi:
- IRWAN AGUSNU PUTRA, 2010. Potassium Based Nutrient Management of Critical Level For Maize (Zea mays L.) at Various Nutrient Status in the Inceptisol Soil. Under his guidance, Dr. Ir. Hamidah Hanum, MP as Chairman of the Commission of Advisors with members Dr. Ir. Chairani Hanum, MP. In North Sumatra, most of the planting area of corn in the ground Inceptisol widespread, also dominated by the relatively high clay content so that the fixation of potassium are very strong which resulted in the concentration of potassium in soil solution is reduced, this causes the element potassium in the Inceptisol soil is relatively low. The study was conducted with a single location approach, which is a modification of an artificial nutrient. The purpose of this study was to determine the nutrient status of K due to chicken manure application, assess the response of growth and production of maize at different soil potassium nutrient status of the application of chicken manure and determine critical limits and doses of potassium fertilizer on the soil for corn crops in Inceptisol soil at various K soil nutrient status. The results were obtained giving a dose of chicken manure 40 t / ha can increase soil nutrient status with the acquisition of K-dd me/100 of soil from the low to rather high at Inceptisol soil, the critical limit of K-dd Inceptisol soil on corn plants with medium nutrient status (1,03 mg/100 g) is higher than the low (0,50 me/100 g) and rather low nutrient status (0,76 me/100 g). Doses of K fertilizer on the basis of critical level and the response curve to obtain maximum results at different nutrient status is 79,28 kg KCl / ha (low), 104, 58 KCl / ha (rather low) and 219.45 kg/ha of KCl (medium). The best plant response at rather low nutrient status or chicken manure doses at 10 t/ha with product dry grain 11,05 t/ha.
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