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Journal : Soil REns

Pengaruh Organo-mineral Terhadap Beberapa Sifat Kimia Tanah dan Hasil Jagung pada Ultisol Jatinangor Sudirja, Rija; Machfud, Yuliati; Sofyan, Emma Trinurani; Joy, Benny; Rosniawaty, Santi; Ros, Rani
SoilREns Vol 16, No 1 (2018)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.203 KB) | DOI: 10.24198/soilrens.v16i1.18349

Abstract

The use of organic materials and minerals as fertilizer needs to be developed in order to increase agricultural productivity, especially in soils marginal that are widely distributed on the Indonesian. This study aims to determine the productivity of soil and corn plants by using various formulations of organo-mineral materials in the Ultisols Jatinangor. The experiment was conducted from April to November 2017 at Ciparanje Experimental Garden, Faculty of Agriculture, Universitas Padjadjaran, using a simple randomized block design consisting of 10 treatments and replicated 3 times. The organo-mineral ingredients used consist of a combination of Humic Acid (6; 8; 10 kg/ha); Dolomites (100; 150; 200 kg/ha); Natural Phosphates (250; 300; 350 kg/ha); also Zeolites (150; 200; 250 kg/ha). The results showed that ameliorant combination had significant effects on soil pH, P-available, and Mn Total, also the yield of maize. Dosage of 8 kg/ha of Humid Acids + 200 kg/ha of Dolomites + 350 kg/ha of Natural Phosphates + 250 kg/ha Zeolite, has indicated better result based on variable experiment.Keywords: maize, organo-mineral, Humic acid, dolomite, phosphate, ultisols
Pertumbuhan Padi Gogo yang dipengaruhi oleh Aplikasi Pupuk Hayati dan Pupuk NPK pada Andisols Fitriatin, Betty Natalie; Silpanus, Robi Natalie; Turmuktini, Tien Natalie; Sofyan, Emma Trinurani; Yuniarti, Anni Natalie
SoilREns Vol 16, No 2 (2018)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.777 KB) | DOI: 10.24198/soilrens.v16i2.20853

Abstract

ABSTRACT Intensive inorganic may lead to land degradation, and can be amended with the aid of biofertilizers . This study was conducted to investigate the application of biofertilizer (phosphatesolubilizing mircrobes and nitrogen-fixing bacteria) and inorganic fertilizers on the growth of upland rice on Andisols. Randomized Block Design (RBD) in factorial pattern were used as experimental design, which consisted of  two factors with three replications. The first factor consisted of biofertilizer addition dosages: without biofertilizer, biofertilizer consortia 1 (Pseudomonas mallei, P. cepaceae, Aspergillus niger and Penicillium sp., Azotobacter  chroococum, Azospirillum sp.), biofertilizer consortia 2 (Azotobacter choroococum, A. viilandii, Azospirillum, Pseudomonas cepaceae, Penicillium and Acitenobacter) and the mixture of biofertizer consortia 1 and 2. The second factor were Nitrogen-Phosphate-Potassium fertilizer which consisted of four levels (100%, 75%, 50% and 25% of The Indonesian Ministry of Agriculture recommended dosage). The results showed that the application of  biofertilizer consortia increased the growth of upland rice and fertilizer efficiency on Andisols.  Keywords : Andisols, biofertilizers, NPK fertilizers, upland rice
Pengaruh Dosis Konsorsium Pupuk Hayati dan Dosis Nutrisi terhadap Populasi Bakteri Pelarut Fosfat dan Hasil Tomat (Solanum lycopersicum L.) pada Sistem Hidroponik Fitriani, Iva; Suryatmana, Pujawati; Sofyan, Emma Trinurani
SoilREns Vol 15, No 1 (2017)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v15i1.13338

Abstract

Hydroponic system is an alternative agricultural cultivation technology that able to answer the problem of narrowing farmland, decline in soil fertility, and the need of healthy foods. Production of tomato with this system has its own market segment, but it needs a specific treatment, such as preparation of planting medium, usage of fertilizer and addition of nutrient, etc. This experiment aims to determine the effect of biofertilizer consortium dosage and nutrient dosage, as well as their interaction to the population of phosphate solubilizing bacteria and tomato yield. The experiment was conducted in a greenhouse of Faculty of Agriculture, Universitas Padjadjaran, Jatinangor, in June to October 2015. Design of experiment was arranged in factorial randomized block design consisting of two factors. The first factor was biofertilizer consortium dosage (0 mL/polybag, 5 mL/polybag, and 10 mL/polybag), and the second factor was nutrient dosage (0 mL, 250 mL, and 500 mL). The result showed that there was no interaction between biofertilizer consortium dosage and nutrient dosage to the population of phosphate solubilizing bacteria and tomato yield.ywords: biofertilizer consortium, hydroponic, phosphate solubilizing bacteria, tomato
Serapan N P K Tanaman Jagung (Zea mays, L.) pada Typic Eutrudepts akibat Pemberian Pupuk Organik Padat Curah (POPC) dan Pupuk Anorganik Machfud, Yuliati; Sofyan, Emma Trinurani; Saribun, Daud Siliwangi; Yuliana, Anne
SoilREns Vol 15, No 1 (2017)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.984 KB) | DOI: 10.24198/soilrens.v15i1.13340

Abstract

The use of organic fertilizer in the form of manure at as dose of 5000-10000 kg.ha-1 has been practiced by corn farmers, while the Solid Organic Fertilizer (SOF) in a small dose isn’t quite is known among of corn farmer. This study aims to determine the effect of POPC combined with N P K to the results of corn (Zea mays L.). The research was carried out in Typic Eutrudepts land from in October 2013 to January 2014 use a RBD, consisting of SOF was combined nine treatment with N P K and one treatment as a control. The results of this research indicated that SOF with N P K doses improved the growth and yield of corn. Increasing the dose recommended dosage 1-2 POPC (500-1000 kg.ha-1) combined with one dose of a standard N P K can increase yields significantly, the highest result was achieved by treatment with 1 dose of 2 POPC standard N P K.Keywords: corn, solid organic fertilizer, Typic Eutropepts
Kontribusi Pupuk Hayati dan Pupuk Anorganik untuk Meningkatkan Pertumbuhan dan Hasil Tanaman Padi Gogo pada Ultisols Jatinangor Fitriatin, Betty Natalie; Nabila, Muthia Erwina; Turmuktini, Tien; Sofyan, Emma Trinurani; Yuniarti, Anni
soilrens Vol 17, No 1 (2019)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.517 KB) | DOI: 10.24198/soilrens.v17i1.23216

Abstract

Ultisols have low soil fertility problems. Beneficial microbes such as biofertilizers could improve soil fertility and the productivity of Ultisols sustainability.  The purpose of this research was to study the contribution of biofertilizers and NPK fertilizers to increase growth and yield of upland rice on Utisols. This experiment used a Randomized Block Design (RBD) in factorial pattern, consisting of  two factors with three replications. The first factor consisted of biofertilizer, which were ; without biofertilizer, biofertilizer consortia A (Pseudomonas mallei, P. cepaceae, Aspergillus niger and Penicillium sp., Azotobacter  chroococum, Azospirillum sp.) biofertilizer consortia B (Azotobacter choroococum, A. viilandii, Azospirillum, Pseudomonas cepaceae, Penicillium and Acitenobacter) and biofertizer consortia A+B. The second factor were NPK fertilizers with four levels ( 100%, 75%, 50% and 25% dosage of recomendation). The results showed that the application of  biofertilizer consortia increased growth of upland rice on Ultisols Jatinangor
Analisa Usaha Tani terhadap Aplikasi Pupuk Majemuk Cair pada Tanaman Jagung Manis Mulyani, Oviyanti; Sofyan, Emma Trinurani; Sudirja, Rija; Machfud, Yulianti; Joy, Benny
soilrens Vol 17, No 1 (2019)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (588.364 KB) | DOI: 10.24198/soilrens.v17i1.23246

Abstract

Analysis of the farming system is an applied science which concerns on how to use resources efficiently and effectively in agricultural business in order to get maximum results. In this analysis, one of the important aspects on agricultural production is fertilizer. Liquid compound fertilizer is a fertilizer with several advantages such as simple application, complete and balanced required nutrients, labour and time efficient, and easy to procure and store. The purpose of this study was to determine the analysis of farming system on the application of liquid compound fertilizer on sweet corn. This experiment used a Randomized Block Design (RBD) consisted of 10 treatments (8 treatments of liquid fertilizer doses, one treatment of fertilizer dosage recommendations for NPK and one control (without fertilizer)). Each treatment was repeated three times, with the total of 30 experimental plots. The results of this experiment were the application of compound liquid fertilizer provides a high relative value of agronomic efficiency and profits on corn. The treatment of 1 ¼ NPK liquid fertilizer dose gave higher RAE, R/C and B/C values compared to the control. NPK liquid fertilizer has a significant effect on the variables of soil (pH, N, P and K content) and yield components (N, P and K uptake). In general, the use of NPK liquid fertilizer can significantly increase the yield, with the highest yield on 1 ¾ dose and the yield of corn plants (18,329 kg/ha).