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All Journal Plumula : Berkala Ilmiah Agroteknologi
Setyo Budi Santoso
Program Studi Agroteknologi, Fakultas Pertanian, UPN "Veteran" Jawa Timur
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Energy Immunology & microbiology Materials Science & Nanotechnology

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KERAGAAN PERTUMBUHAN BIBIT TANAMAN KAKAO AKIBAT PENGARUH PEMBERIAN BERBAGAI KONSENTRASI PUPUK ORGANIK CAIR DAN DOSIS PUPUK UREA Irawan Dwiyanto; Moch Arifin; Setyo Budi Santoso; Erwin Prastowo
Plumula : Berkala Ilmiah Agroteknologi Vol 9 No 1 (2021): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v9i1.53

Abstract

Cocoa pod have the potential to be used as an organic fertilizer because of the nutrient content in them. It was reported that 61% of the total nutrients in the cocoa pods are stored in the pod husks themselves. Liquid organic fertilizer derived from cocoa waste by combining EM-4 as a decomposer has an organic C content of 28.24%, a total N of 1, 64%, C / N ratio of 17%, P total 0, 98%, and K total 0.75%. Cocoa pod husk waste has the potential to provide added value to plantation products by further processing it as liquid organic fertilizer (POC) through a fermentation process. For this reason, this study aims to determine the effect of several levels of POC concentration obtained from the processing of cocoa husk waste and its combination with urea fertilizer doses on the growth performance of cocoa seedlings which include plant height, number of leaves, stem diameter and efficiency of N uptake of cocoa plants (ESN). This research was conducted in a greenhouse, Indonesian Coffee and Cocoa Research Center, Jember, and was compiled using a Completely Randomized Design (CRD) consisting of two factors used, namely the level of POC concentration (control, 0.25%, 0.50% and 1%) and the level of urea dose against the recommended dose (control, 10%, 25% and 50%). The analysis showed that the POC combination of cocoa and urea waste was able to increase the average plant height and diameter compared to the control. In addition, the combination of POC 2.5 ml / L and 10% dose of urea resulted in an increase in the efficiency of N uptake in tissues by 44.60%.
MINERALISASI NITROGEN TANAH PADA BERBAGAI PENGELOLAAN TANAMAN KOPI (Coffea L.) DI KECAMATAN TUTUR-PASURUAN Novita Risti Azahra; Wanti Mindari; Setyo Budi Santoso
Plumula : Berkala Ilmiah Agroteknologi Vol 9 No 1 (2021): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v9i1.56

Abstract

The mineralization process is responsible for the availability of N in the soil. The purpose of this study is to examine the management of coffee land (Coffea L.) and climate on the rate of soil Nitrogen mineralization. In situ incubation research by implanting 15.5 cm long cylindrical pvc ring; diameter of 14 cm that has been perforated around it and a wire covering / net so that animals such as scorpions and snakes do not enter the hole. The research was arranged in factorial randomized block design which was repeated 3 times. Factor 1 : 3 types of land management and factor 2 : 4 types of organic matter. The level of N mineralization is evaluated against the levels of N-nitrate and N-ammonium soil. The highest NH4+ N concentration of 0.060% was found in the L1S3 treatment (first land, mixed ring) and the lowest NH4+ concentration in the L3S1 treatment (third land, control ring) 0.03%. NO3 concentration - interaction occurs with the highest NO3 concentration in the L2S3 treatment (second land, mixed ring) 0.092% and lowest NO3 concentration in the L1S1 treatment (first land, control ring) 0.013% with a BNT value of 5% at 0.023%. So the fastest nitrogen mineralization occurs in soils that get litter of shade plants (mixed / S3). The value of mineralization rate is strongly influenced by temperature, the increase in the value of mineralization rate due to temperature is due to the faster process of decomposition of organic matter.
Co-Authors Erwin Prastowo Irawan Dwiyanto Moch Arifin Novita Risti Azahra Wanti Mindari