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All Journal Agrotrop : Journal on Agriculture Science Jurnal Tanah dan Air Jurnal Tanah dan Air (Soil and Water Journal)
Yustisia Yustisia
Balai Pengkajian Teknologi Pertanian Sumatera Selatan
Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Physics

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Nisbah N/K jerami dan hasil tiga varietas padi (oryza sativa L.) pada pemberian hara N, P dan K alternatif berbasis teknologi eksisting petani Yustisia Yustisia; Tohari Tohari; Dja’far Shiddieq; Subowo Subowo
Jurnal Ilmu Tanah dan Air Vol 14, No 2 (2017)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v14i2.2575

Abstract

The most farmers in the lowland use N, P and K nutrients from urea, SP 36 and KCl fertilizer severally. The combined rates of NPK, NK, PK and NP was given varies by farmers. Its expected that N/K ratio of straw and grain yield varies with varieties and varies with NPK, NK, PK and NP combined rates. Pot experiment aimed to identify N/K ratio of straw and grain yield and test the several combined rates of N, P and K nutrients and its effectiveness based on the farmers’s technology. The experiment was conducted in Glasshouse of Agriculture Faculty, Gadjah Mada University during dry season 2009. The experiment applied Randomized Split Plot Design and each treatment was repeated 3 times. The Main Plot treatment consisted of 3 rice varieties: IR 64, Ciherang and Cimelati. The Sub Plot treatment consisted of 5 combined doses of N, P and K based on the farmers’s technology as a reference (+NPK): 222.26 kg ha-1 N, 56.80 kg ha-1 P2O5 and 47.67 kg ha-1 K2O; (0 NPK); (0 N + PK); (0 P + NK); and (0 K + NP). The result showed that the highest straw N/K ratio was achieved by IR 64. It was significantly different with Ciherang and Cimelati. The grain yield of IR 64, Ciherang and Cimelati was not significantly different. Considering its grain yield, Ciherang and Cimelati can be used as alternative of variety for farmers. The highest grain yield (77,089 g.pot-1) and highest RAE value (107,68%) was achieved by (0 P + NK) treatment. The RAE value in (0 P + NK) treatment was achieved by Ciherang (121.74%) and IR 64 (117.07%). The lowest of grain yield was achieved by (0 NPK) and (0 N + PK) treatments. It was affected by an imbalance of straw N/K ratio due to the effect of Inceptisol’s native soil properties (low N, high P and K). Based on the grain yield and RAE value, combined rate of 0 P + NK (0 kg P2O5/ha, 222.26 kg N/ha and 47.67 kg K2O/ha) can be used as alternative of N, P, K fertilization. 
Pengkayaan Besi (Fe) dan Seng (Zn) dalam Beras dan Karakter Penentu Varietas Padi Sawah Efisien pada Tanah Vertisol dan Inseptisol YUSTISIA YUSTISIA; TOHARI TOHARI; DJA’FAR SHIDDIEQ; SUBOWO G
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.665 KB)

Abstract

Increasing concentration of Fe and Zn micronutrients in rice grain is needed to reduce a wide gap between micronutrients concentration in rice grain and daily recommended consumption, and to antisipate of rice consumption decreased consequence. The Fe and Zn micronutrients in rice grain is influenced by genetic, soil type and management fertilizer factors. The major of rice field and intensively lowland rice production in Indonesia is conducted in Inceptisols and the others is conducted in Vertisols. This research conducted to identify rice genotypes based on their Fe and Zn concentrations in whole brown rice and to identify specific characters of efficient genotypes based on their potentially increasing concentrations of Fe and Zn in whole brown rice. The experiment was conducted in the Greenhouse of Agriculture Faculty, Gadjah Mada University during Dry Season 2008. The experiment was arranged using Randomized Complete Block Design with three replications. Two different soils (Vertisols and Inceptisols) as a first factor, and genotypes (Cimelati, Pandan Wangi, Ciherang, Cisokan, Widas dan IR 64) as a second factor. Fertilizer application in Inceptisols was applied at the rate of 222, 26 kg ha-1 N, 56,80 kg ha-1 P2O5 and 47,67 kg ha-1 K2O. In Vertisols, fertilizer was applied at the rate of 136,38; 52,29 and 43,88 kg ha-1 N, P2O5 and K2O respectively. The result revealed that the concentrations of Fe and Zn in whole brown rice of Widas and Ciherang genotypes in Inceptisols was higher than that it is in Vertisols. The Fe and Zn concentrations in whole brown rice of Widas were 19,8 ppm and 24,43 ppm and Ciherang were 11,40 ppm and 24,55 ppm respectively. The Widas and Ciherang are the efficient genotypes and Cimelati is the inefficient genotype. The efficient genotypes had darker leaves, narrower leaves, lower yield decrease, higher grain yield efficiency index, compared to the inefficient genotypes. The maximal yield decreased for selecting efficient rice genotypes with NPK fertilizer at the 222, 26 kg ha-1 N, 56,80 kg ha-1 P2O5 and 47,67 kg ha-1 K2O compared to the without NPK fertilizer obtained of arround 41,49%.
Nisbah N/K jerami dan hasil tiga varietas padi (oryza sativa L.) pada pemberian hara N, P dan K alternatif berbasis teknologi eksisting petani Yustisia Yustisia; Tohari Tohari; Dja’far Shiddieq; Subowo Subowo
Jurnal Ilmu Tanah dan Air Vol 14, No 2 (2017)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v14i2.2575

Abstract

The most farmers in the lowland use N, P and K nutrients from urea, SP 36 and KCl fertilizer severally. The combined rates of NPK, NK, PK and NP was given varies by farmers. Its expected that N/K ratio of straw and grain yield varies with varieties and varies with NPK, NK, PK and NP combined rates. Pot experiment aimed to identify N/K ratio of straw and grain yield and test the several combined rates of N, P and K nutrients and its effectiveness based on the farmers’s technology. The experiment was conducted in Glasshouse of Agriculture Faculty, Gadjah Mada University during dry season 2009. The experiment applied Randomized Split Plot Design and each treatment was repeated 3 times. The Main Plot treatment consisted of 3 rice varieties: IR 64, Ciherang and Cimelati. The Sub Plot treatment consisted of 5 combined doses of N, P and K based on the farmers’s technology as a reference (+NPK): 222.26 kg ha-1 N, 56.80 kg ha-1 P2O5 and 47.67 kg ha-1 K2O; (0 NPK); (0 N + PK); (0 P + NK); and (0 K + NP). The result showed that the highest straw N/K ratio was achieved by IR 64. It was significantly different with Ciherang and Cimelati. The grain yield of IR 64, Ciherang and Cimelati was not significantly different. Considering its grain yield, Ciherang and Cimelati can be used as alternative of variety for farmers. The highest grain yield (77,089 g.pot-1) and highest RAE value (107,68%) was achieved by (0 P + NK) treatment. The RAE value in (0 P + NK) treatment was achieved by Ciherang (121.74%) and IR 64 (117.07%). The lowest of grain yield was achieved by (0 NPK) and (0 N + PK) treatments. It was affected by an imbalance of straw N/K ratio due to the effect of Inceptisol’s native soil properties (low N, high P and K). Based on the grain yield and RAE value, combined rate of 0 P + NK (0 kg P2O5/ha, 222.26 kg N/ha and 47.67 kg K2O/ha) can be used as alternative of N, P, K fertilization. 
Co-Authors DJA’FAR SHIDDIEQ Dja’far Shiddieq SUBOWO G Subowo Subowo TOHARI TOHARI Tohari Tohari