scholarly journals Plot Scale Phosphorous and Potassium Balances of Newly Opened Wetland Rice Farming Originated from Wetland

2013 ◽  
Vol 17 (3) ◽  
pp. 227-237
Author(s):  
. Sukristiyonubowo ◽  
Kusumo Nugroho ◽  
Sofyan Ritung
Keyword(s):  
Nutrient Balance ◽  
Mineral Fertilizer ◽  
Application Rate ◽  
Rice Fields ◽  
Wetland Rice ◽  
Soil Productivity ◽  
Rice Grain ◽  
Rice Farming ◽  
Dry Land ◽  
East Kalimantan

Development of newly opened wetland rice fields both from dry land and wetland in Indonesia are important to meetrice growing demand, increase soil productivity, keep rural food security and provide jobs as well as generateincome. Most soils of newly opened rice fields are low in P and K contents, but the farmers do not apply P and Krecommended fertilisers. The study was conducted on newly opened wetland rice farming in Panca Agung village,Bulungan District, East Kalimantan Province, Indonesia in 2009. The aims were to evaluate phosphorous andpotassium input – out of newly opened wetland rice and to validate the P and K recommendation. Six treatmentswere tested including farmers practices (as control), farmer practices + straw compost + dolomite, NPK withrecommendation rate in which N and K was split in two applications, NPK with recommendation rate in which N andK was split three applications, NPK with recommendation rate + straw compost + Dolomite , in which N and K wassplit three applications, and NPK with recommendation rate + straw compost + dolomite, in which N and K weresplit two applications. The N, P and K rates were 250 kg urea, 100 kg SP-36 and 100 kg KCl ha-1 season-1, while thefarmer practices 100 kg urea and 100 kg SP-36 ha-1 season-1. Parameters to be measured were concentration P andK in mineral fertilizer, compost, irrigation water and grains as well as straw. The results showed that surplus Pranged from 5.75 to 12.85 kg P ha-1 season-1, meaning that SP-36 application rate was more than enough to replace Premoved by harvest product. In contrast, potassium application rate should be increased from 100 to 200 kg KClha-1 season-1 to fix K removed by harvest product. However, when the compost will also be increased to 3 Mg ha-1season-1 K fertilizer can be increased to 150 kg KCl ha-1 season-1 to substitute K taken away by rice harvest productand to keep higher rice grain yield. These P and K recommendation rate imply that total SP-36 and KCl should beavailable at district level will be about 984.9 Mg SP-36 and 1.477 Mg KCl district -1 season -1, respectively.Keywords: Newly opened wetland rice; nutrient balance; nutrient input; nutrient losses; plot scale wetland[How to Cite: Sukristiyonubowo, K Nugroho and S Ritung. 2012. Plot Scale Phosphorous and Potassium Balances of Newly Opened Wetland Rice Farming Originated from Wetland. J Trop Soils 17 (3): 227-237. doi: 10.5400/jts.2012.17.3.227][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.227] 

scholarly journals Nutrient Removal by Rice Cultivated in Newly Opened Wetland Rice in Bulungan District, East Kalimantan

2012 ◽  
Vol 17 (2) ◽  
pp. 115
Author(s):  
. Sukristiyonubowo ◽  
Kusumo Nugroho ◽  
Tagus Vadari
Keyword(s):  
Rice Straw ◽  
Nutrient Removal ◽  
Rice Field ◽  
Wetland Rice ◽  
Rice Grain ◽  
Nutrients Removal ◽  
Fertility Status ◽  
East Kalimantan ◽  
Acid Sulphate Soils ◽  
Potential Acid

Highly weathered Indonesian soils and potential acid sulphate soils are mainly granted for developing newlyopened wetland rice field to meet rice growing demand in Indonesia. Nutrient removal by rice harvest product ofCiliwung variety planted in newly opened wetland rice was studied in Bulungan District, in 2009. The aims were toexamine the nutrient taken out by rice harvest product and to properly manage its fertility status to sustain ricefarming. Six treatments were studied including T0: farmers practices, T1: farmer practices + compost + dolomite, T2:NPK recommended rate, N and K were split two times, T3: NPK recommended rate, N and K were split three times,T4: NPK recommended rate, N and K were split three times + compost + dolomite and T5: NPK recommended rate,N and K were split two times + compost + dolomite. The results indicated that the highest concentrations of N, P,and K in rice grain and rice straw were observed at NPK with recommendation rate in which N and K were split threetimes + straw compost + dolomite (T4). The T4 (NPK with recommendation rate in which N and K were split threetimes + straw compost + dolomite) also showed the highest nutrient removal by harvest product. Depending on thetreatments, total nutrients removal through rice grains and rice straw varied from 61.81 to 101.71 kg N, 4.31 to13.69 kg P and from 95.77 to 171.16 kg K ha-1 season-1, meaning that at least about 137 to 225 kg urea, 50 to 160kg SP-36 and 190 to 339 kg KCl ha-1 season-1 should be given to replace nutrient removed by harvest product andto avoid any nutrients depletion. When all rice straws were returned to the field as compost, about 55 to 133 kg urea,25 to 110 kg SP-36 and 10 to 19 kg KCl ha-1 season-1 should be added to substitute nutrient removed by rice grain.[How to Cite: Sukristiyonubowo, K Nugroho and T Vadari. 2012. Nutrient Removal by Rice Cultivated in Newly Opened Wetland Rice in Bulungan District, East Kalimantan. J Trop Soils 17: 115-120. Doi: 10.5400/jts.2012.17.2.115] [Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.2.115]

scholarly journals Analisis Sistem Agribisnis Padi Sawah di Kawasan Ekowisata (Studi Kasus Subak Sembung, Desa Peguyangan, Kecamatan Denpasar Utara)

2017 ◽  
pp. 336 ◽  
Author(s):  
LISTIANA DEWI ◽  
DWI PUTRA DARMAWAN ◽  
I KETUT SUAMBA
Keyword(s):  
Rice Field ◽  
Descriptive Analysis ◽  
Economic Value ◽  
Farming System ◽  
Rice Fields ◽  
Wetland Rice ◽  
Rice Farming ◽  
Quantitative Descriptive Analysis ◽  
Good Relation ◽  
Quantitative Descriptive

Analysis of Wetland Rice Agribusiness System in Ecotourism Area (A Case Study of Subak Sembung, Peguyangan Village, District of North Denpasar) The existence of subak land conversion in Denpasar City causes Denpasar Mayor to issue a policy to protect rice fields through development of Green Open Zone, especially rice fields for ecotourism purposes. Subak Sembung is a subak that becomes ecotourism area in the middle of the town. It is necessary to do research to analyze the system of wetland rice agribusiness in an ecotourism area. The purpose of this study was to determine the system of wetland rice agribusiness, profits and feasibility of rice field farming, as well as obstacles in the development of rice farming in Subak Sembung. The method used was qualitative descriptive analysis and quantitative descriptive analysis in the form of cost analysis, income, as well as analysis of revenue and cost balance. The results showed that upstream agro-industry subsystem, farming system, downstream agroindutrial subsystem, and supporting institution subsystem had a good relation. There is a special support institution (Subak Sembung ecotourism manager) that provides additional ecological and economic value through the sharing of the results of ecotourism management. The farmers did not receive a direct share of the management of ecotourism, but the farms earned a profit of Rp. 6,996,784.20 / ha, as well as the revenue and expense of 2.88. Obstacles faced by farmers were in the form of labor shortage of rice field tractor and pest insulation aphis. The conclusion of the research is the system of wetland rice agribusiness in Subak Sembung has been running quite well, rice farming is able to gain profits and said feasible to run in the future, and farmers experience barriers in the management of the farm.

scholarly journals Dynamics of plankton and fish in a subtropical temporary wetland: Rice fields

2011 ◽  
Vol 6 (10) ◽  
pp. 2069-2077 ◽  
Author(s):  
Helena Ribeiro Rodrigues Luacute cia ◽  
Bertazzo Canterle Eliete ◽  
Becker Vanessa ◽  
Gazulha Vanessa ◽  
Hamester Acirc ngela ◽  
...  
Keyword(s):  
Rice Fields ◽  
Wetland Rice ◽  
Temporary Wetland

scholarly journals Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname

2017 ◽  
Vol 47 (3) ◽  
pp. 185-194 ◽  
Author(s):  
Adriano Stephan NASCENTE ◽  
Ruby KROMOCARDI
Keyword(s):  
Grain Yield ◽  
Management Practices ◽  
Upland Rice ◽  
Block Design ◽  
Field Trials ◽  
Application Rate ◽  
Rice Grain ◽  
Rice Varieties ◽  
Local Conditions ◽  
Randomized Block Design

ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.

scholarly journals GROWTH AND NUTRITION OF Paratecoma peroba SEEDLINGS IN DIFFERENT TUBE VOLUMES AND CONTROLLED-RELEASE FERTILIZERS

FLORESTA ◽  
2020 ◽  
Vol 50 (3) ◽  
pp. 1613
Author(s):  
Thais Arão Feletti ◽  
Emanuel França Araújo ◽  
Elzimar De Oliveira Gonçalves ◽  
Thamara Arão Feletti ◽  
Aline Ramalho Dos Santos ◽  
...  
Keyword(s):  
Controlled Release ◽  
Nutrient Balance ◽  
Mineral Fertilizer ◽  
Integrated System ◽  
Native Forest ◽  
Forest Species ◽  
Randomized Design ◽  
Growth And Nutrition ◽  
Nutritional Balance ◽  
Balance Index

Paratecoma peroba is a native forest species of great economic and ecological interest, currently at risk of extinction from selective and illegal exploitation; however, there are no established parameters for the production of seedlings of this species. The objective of this study was to analyze the growth and nutritional balance of P. peroba seedlings grown in polypropylene tubes of different sizes with variable doses of controlled-release fertilizer (CRF). Three volumes of tubes (120, 180, and 280 cm3), four CRF doses (0, 2.5, 5, and 7.5 kg m-3), and a conventional mineral fertilizer (CF) were tested as indicated in the literature for native forest species: arranged in a completely randomized design in a 3 × 5 factorial scheme, with four replicates composed of 16 seedlings. After 180 days, the percentage of survival, growth variables, indices of the diagnosis and recommendation integrated system, and the average nutrient balance index of the seedlings were analyzed. Based on the total dry matter and the mean nutritional balance index, the combination of a 280 cm³ tube with a 7.5 kg m-3 CRF dose was the most effective in the production of P. peroba seedlings.

Methane Emission from the Wetland Rice Fields in Sagar Island, Ne Coast of Bay of Bengal, India

2005 ◽  
Vol 1 (1) ◽  
pp. 76-84 ◽  
Author(s):  
H. Biswas . ◽  
S.K. Mukhopadhayay . ◽  
T.K. De . ◽  
S. Sen . ◽  
T.K. Jana .
Keyword(s):  
Methane Emission ◽  
Bay Of Bengal ◽  
Rice Fields ◽  
Wetland Rice ◽  
Sagar Island

scholarly journals Level of work day (human, animal, and machine) at each stage of rice farming in irrigated rice fields

2020 ◽  
Vol 486 ◽  
pp. 012031
Author(s):  
M Salam ◽  
D Rukmana ◽  
Mahyuddin ◽  
A N Tenriawaru ◽  
Akhsan ◽  
...  
Keyword(s):  
Rice Fields ◽  
Rice Farming ◽  
Irrigated Rice ◽  
Human Animal

scholarly journals Impact of depth of placement of mineral fertilizer micro-dosing on growth, yield and partial nutrient balance in pearl millet cropping system in the Sahel

2014 ◽  
Vol 153 (8) ◽  
pp. 1412-1421 ◽  
Author(s):  
A. IBRAHIM ◽  
D. PASTERNAK ◽  
D. FATONDJI
Keyword(s):  
Pearl Millet ◽  
Root Length Density ◽  
Nutrient Balance ◽  
Growth Yield ◽  
Cropping System ◽  
Soil Nutrient ◽  
Mineral Fertilizer ◽  
Fertilizer Application ◽  
Different Depths ◽  
Positive Effect

SUMMARYA study was carried out in the rainy seasons of 2008 and 2009 in Niger to investigate the effects of fertilizer micro-dosing on root development, yield and soil nutrient exploitation of pearl millet. Different rates of diammonium phosphate (DAP) were applied to the soil at different depths and it was found that although micro-dosing with DAP increased grain yield over the unfertilized control to a similar level as broadcast DAP, doubling the micro-dosage did not increase it further. Increasing the depth of fertilizer application from 5 to 10 cm resulted in significant increases in root length density, and deep application of fertilizer resulted in higher yields, although the increases were generally not significant. It was postulated that the positive effect of micro-dosing resulted from better exploitation of soil nutrients because of the higher root volume. Levels of nutrients exported from the soil were at least as high in plants receiving micro-dosing as the unfertilized control, and plants receiving micro-dosing exported 5–10 times more phosphorus from the soil than the amount added through fertilization.

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