Lumbanraja, Jamalam and Wanti, ND and Supriatin, Supriatin and Sarno, - and Dermiyati, - and Triyono, Sugeng and Kaneko, Nobuhiro (2018) Production and harvested nutrient of cassava (manihot esculenta l.) affected by compost and its combination with NPK inorganic fertilizer for the 5th planting period. "6TH INTERNATIONAL WORKSHOP ON CROP PRODUCTION AND PRODUCTIVITY UNDER GLOBAL CLIMATE CHANGE" (Proceeding). pp. 69-71. ISSN ISBN 978-4-909365-04-0

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Abstract

One of the reasons for decreasing cassava production is the degradation of soil quality especially in a humid tropical climate. To increase cassava production is usually by adding inorganic fertilizers. The objectives of this research were to determine the effect of compost and its combination with NPK inorganic fertilizer on the production, and harvested nutrient by cassava in the 5th planting period and to determine the combination of compost with inorganic NPK on the production, and harvested nutrient by cassava in the 5th period. Treatments in this research were T1 = control; T2 = 800 kg urea ha-1, 300 kg TSP ha-1 and 600 kg KCl ha-1; T3 = 400 kg urea ha-1; 200 kg TSP ha-1, 400 kg KCl ha-1 and 1 Mg compost ha-1, T4 = 200 kg urea ha-1, 100 kg TSP ha-1, 200 kg KCl ha-1 and 5 Mg compost ha-1 , T5 = 100 kg urea ha-1, 50 kg TSP ha-1, 100 kg KCl ha-1 and 10 Mg compost ha-1 and T6 = 20 Mg compost ha-1 with 3 replications. The results showed that the combination treatment of compost with inorganic NPK with a rate of 200 kg urea ha-1, 100 kg TSP ha-1, 200 kg KCl ha-1, and 5 Mg compost ha-1 produced the highest production, harvested C and harvested N in cassava compared to other treatments. While the treatment of compost at a rate of 20 Mg of compost ha-1 produced the highest harvested P and K in cassava compared to other treatments.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Prof.Dr.Ir Jamalam Lumbanraja
Date Deposited: 30 Apr 2019 04:15
Last Modified: 30 Apr 2019 04:15
URI: http://repository.lppm.unila.ac.id/id/eprint/11038

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