scholarly journals Identifikasi Status Hara N Lahan Sawah pada Daerah Irigasi Kedunglimus Arca Kiri, Di Kecamatan Kembaran Kabupaten Banyumas

Author(s):  
Leony Agustine ◽  
Teguh Widiatmoko ◽  
Begananda Begananda

Paddy soil is land that is important in Indonesia as a major resource for growing rice in rice production. The main problems in rice cultivation in paddy fields is the transfer function, especially fertile and irrigated paddy fields into industrial areas and urban sprawl. The study aims to determine the amount of the nutrient content of N and determine the availability of nutrients N correlation with the production of rice in paddy fields in the area of the left arca of weir irrigation in Sub-District Kembaran Banyumas. The experiment was conducted in paddy fields in the area of the left arca of weir irrigation in Sub-District Kembaran Banyumas and followed with the analysis of the soil at the Laboratory Institute for Agricultural Technology in Yogyakarta and in the Laboratory of Soil Science, Faculty of Agriculture Unsoed. The experiment was conducted in March and May 2015. The study was conducted by survey method, in-depth review the level of accuracy (semi detail) with scale in map 1: 50,000. The determination of sample points is based on Homogeneous Soil Map Unit (SLH), which is made by overlay map on the map of soil types, slope maps and land use maps of research areas. The number of samples is 8, which is located on the 5 villages. The variables were observed and measured in the study include the main variables, namely N-total and N-available and include support variable-organic C content, soil pH, pH of water irrigation, CEC and interviews with farmers. The results showed that N-total content at all SLH is low, i.e. 0.166% in SLH A1f and 0.173% in SLH A2f . The content of N-available (N-NH4) in all SLH are 157 ppm in SLH A1f and 163 ppm in SLH A2f.


2018 ◽  
Vol 16 (2) ◽  
pp. 63
Author(s):  
Reza Achmad Bachtiar ◽  
Muhammad Rifki ◽  
Yayang Resty Nurhayat ◽  
Sarah Wulandari ◽  
Rizki Atikah Kutsiadi ◽  
...  

<em>The objective of research was to evaluate the effect of different level of decomposers from bioethanol waste as a bioactivator to compost nutrient content. The materials used in this study were feces collected from six 3 to 5 years old of male Fresian Holstein (PFH), and decomposer agents from processed-bioethanol waste. The experimental design used was completely randomized design with four treatments and six replications, i.e. P1: 0.4% of decomposer, P2: 0.5% of decomposer, P3: 0.6% of decomposer, P4: 0.7 of decomposer %. Analysis of nutrient contents of compost was conducted at the the Laboratory of Chemistry and Soil Fertility, Department of Soil Science, Faculty of Agriculture, Gajah Mada University, Yogyakarta. Data analysis was performed using Minitab 17 software. The results of the analysis of variance showed that different levels of decomposer affected organic C, phosphor (P), Kalium (K), and Magnesium (Mg). </em><em>Organic C, P, K, and Mg contents were found highest in P2, on the other hand N and Ca contents, C/N ratio, pH, and temperature of compost were not different among treatments. It could be concluded that compost made with 0.5% decomposer agents from processed-bioethanol waste was the best.</em>



Author(s):  
Rian Kurnia ◽  
Trisna Insan Noor ◽  
Eliana Wulandari ◽  
Meddy Rachmadi

This study aims to determine the feasibility of Soybean farming in dryland and paddy fields land in the Jatiwaras Subdistrict, Tasikmalaya Regency. The method used in this study is the survey method, while the data used consists of primary data and secondary data. Determination of sample farmers using the multistage cluster random sampling method. The number of respondents was taken as many as 36 farmers who were divided by farmers on 21 farmers on dryland and 15 farmers on wetland. The results of this study indicate that soybean farming in dryland is more feasible to cultivate with a value of R/C 1.98 while the value of R / C in wetland is 1.62.



2022 ◽  
Vol 951 (1) ◽  
pp. 012014
Author(s):  
Hifnalisa ◽  
A Karim ◽  
Y D Fazlina ◽  
Manfarizah ◽  
Y Jufri ◽  
...  

Abstract Bener Meriah Regency is one of the arabica coffee areas in Indonesia. Generally, most of arabica coffees are grown in Andisols. This research aims to determine the nutrient content of N, P, K in andisols and arabica coffee leaves in the Bener Meriah regency. Data were collected from a 10-year-old arabica coffee tree planted on Andisols located at an altitude of 1200-1400 m above mean sea level and divided in five classes with different slopes, using the survey method and analysed descriptively. The results showed that andisols Bener Meriah had a total N content ranging from 0.09-0.51%. The P-available ranged from 0.3-12.81 mg.kg-1 and P-total content of 159.4-1246.7 mg.kg-1. The K-exchangeable content ranged from 0.17-0.52 cmol kg-1. Arabica coffee leaves contain N ranging from 0.85%-3.00%. The P content ranged from 0.10%-0.23%. Meanwhile, the K content ranged from 1.55%-2.33%. Furthermore, there is a close relationship between soil N-total and the N-nutrient of coffee leaves, soil P-available and P-nutrient of coffee leaves, and soil K-exchangeable and K nutrient contents of coffee leaves with r values of 0.78, 0.97, and 0.68 respectively.



Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
J Krvavac ◽  
E Kovac-Besovic ◽  
J Toromanovic ◽  
M Salihovic ◽  
I Tahirovic ◽  
...  


1992 ◽  
Vol 57 (9) ◽  
pp. 1905-1914
Author(s):  
Miroslav Bleha ◽  
Věra Šumberová

The equilibrium sorption of uni-univalent electrolytes (NaCl, KCl) in heterogeneous cation exchange membranes with various contents of the ion exchange component and in ion exchange membranes Ralex was investigated. Using experimental data which express the concentration dependence of equilibrium sorption, validity of the Donnan relation for the systems under investigation was tested and values of the Glueckauf inhomogeneity factor for Ralex membranes were determined. Determination of the equilibrium sorption allows the effect of the total content of internal water and of the ion-exchange capacity on the distribution coefficients of the electrolyte to be determined.



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