Effects of arsenic-contaminated irrigation water, zinc and organic matter on the mobilization of arsenic in soils in relation to rice (Oryza sativa L.)

2007 ◽  
pp. 339-362
Author(s):  
D DAS
Keyword(s):  
Organic Matter ◽  
Oryza Sativa ◽  
Irrigation Water ◽  
Oryza Sativa L ◽  
Contaminated Irrigation Water

scholarly journals Transfer of Arsenic from Groundwater and Paddy Soil to Rice (Oryza sativa L.) Grain: A Micro Level Study in Chandina, Comilla

2015 ◽  
Vol 12 (2) ◽  
pp. 74-82 ◽  
Author(s):  
Md. Habibur Rahman ◽  
Md. Mohashin Farazi ◽  
Kohinoor Begum ◽  
Md. Serazul Islam
Keyword(s):  
Oryza Sativa ◽  
Irrigation Water ◽  
Agricultural Soil ◽  
Oryza Sativa L ◽  
Arsenic Concentration ◽  
Dry Weight ◽  
Permissible Limit ◽  
Arsenic Content ◽  
Soil Arsenic ◽  
Micro Level

Rice (Oryza sativa L.) is one of the major food crops in many countries. As the cultivation of rice requires huge volume of water, long term use of Arsenic contaminated groundwater for irrigation may result in the increase of arsenic concentration in the agricultural soil and eventually accumulation in rice grains. A micro level study was conducted to investigate the transfer of arsenic from irrigation water and soil to rice plants in the arsenic affected 8 unions of Chandina upazilla, Comilla district. The level of arsenic in irrigation water (0.12±0.08 and 0.67±0.07 mg l-1) was much above the WHO permissible limit of 0.01 mg l-1 for drinking water and FAO permissible limit of 0.10 mg l-1 for irrigation water. The total soil arsenic concentrations ranged from 3.21±0.80 to 8.74±2.83 mg kg-1 dry weight of soil, which was below the maximum acceptable limit for agricultural soil of 20.0 mg kg-1 as recommended by the European Community. The accumulation of arsenic in the grain ranged from 0.12±0.04 to 0.58±0.06 mg kg-1 in Boro and 0.16±0.04 to 1.06±0.20 mg kg-1 in T. Aman. Except grain sample (T. Aman) of one union, the grains in both Boro and T. Aman of all unions did not exceed 1.0 mg kg-1 dry weight of arsenic (the permissible limit of arsenic in rice according to WHO recommendation). Thus, till now rice has remained harmless for consumption in the study area. The results clearly showed that the arsenic content in the grains of Boro rice is correlated to the intensity of arsenic contamination of irrigation water and soil. The Agriculturists 2014; 12(2) 74-82

scholarly journals Trade-off with different establishment methods in terms of irrigation water requirement and weed pressure of rice (Oryza sativa L.)

2020 ◽  
Vol 8 (5) ◽  
pp. 1060-1068
Author(s):  
Santhosh UN ◽  
Desai BK ◽  
Satyanarayana Rao ◽  
Masthana Reddy BG ◽  
Vinay Krishnamurthy ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Irrigation Water ◽  
Oryza Sativa L ◽  
Water Requirement ◽  
Irrigation Water Requirement ◽  
Trade Off

scholarly journals Preparation of wastelage with poultry droppings and rice straw (Oryza sativa L.) as a cattle feed

2018 ◽  
Vol 4 (3) ◽  
pp. 251-258
Author(s):  
Obydul Islam ◽  
Somaya Akter ◽  
Md Ahidul Islam ◽  
Dewan Kamruzzaman Jamee ◽  
Rokibul Islam Khan
Keyword(s):  
Organic Matter ◽  
Oryza Sativa ◽  
Rice Straw ◽  
Oryza Sativa L ◽  
Fungal Growth ◽  
Metabolizable Energy ◽  
Organic Matter Digestibility ◽  
Ph Level ◽  
Poultry Droppings

The use of poultry droppings as a feed ingredient may not only reduce waste and environmental pollution but also provide inexpensive feed components for ruminants. An experiment was conducted to prepare wastelage in the field laboratory of Animal Science Department, Bangladesh Agricultural University, Mymensingh. Rice straw (Oryza sativa L.) was mixed with 0%, 10%, 20% and 30% caged layer excreta (CLE) and 5% molasses in each treatment on dry matter (DM) basis and ensiled in air tight container under room temperature. After 60 days, ensiled mixture was opened. All the wastelage had desirable smell, light brownish color, soft texture and no fungal growth was found. Results revealed that PH, DM, crude protein (CP), crude fiber (CF), ash, in vitro organic matter digestibility and metabolizable energy were significantly (p<0.05) influenced by different levels of CLE. The highest CP (5.97g/100g DM) was observed in wastelage with 30% CLE (p<0.05) followed by 20% and 10% CLE. The PH level, DM, Ash and CF contents were decreased linearly (p<0.05) from 4.8 to 4.11, 78.00 to 55.63, 25.08 to 17.70 and 22.57 to 14.95%, respectively as the level of CLE increased from 0 to 30%. In all treatments, EE content was not significantly influenced by the different level of CLE. The in vitro organic matter digestibility (IVOMD) and metabolizable energy (ME) also increased significantly (p<0.05) with the increased level of CLE and maximum value (57.51%, and 8.12 MJ/Kg DM, respectively) was obtained in wastelage with 10% CLE, which is statistically identical with 20% CLE. Therefore, it could be speculated that ensiling rice straw with up to 20% CLE improved the feeding value of wastelage.Asian J. Med. Biol. Res. September 2018, 4(3): 251-258

scholarly journals Aplikasi Kombinasi Bahan Organik Terhadap Ketersediaan dan Serapan Hara K Serta Pertumbuhan Tanaman Padi Hitam (Oryza sativa L.) di Tanah Sawah

2018 ◽  
Vol 1 (2) ◽  
pp. 174-179
Author(s):  
Windi Nisa Manurung ◽  
Hamidah Hanum ◽  
Razali Razali
Keyword(s):  
Organic Matter ◽  
Oryza Sativa ◽  
Organic Materials ◽  
Oryza Sativa L ◽  
Paddy Fields ◽  
Chicken Manure ◽  
Cow Dung ◽  
K Uptake ◽  
Randomized Design ◽  
Goat Manure

Di dalam bahan organik terdapat senyawa-senyawa lain yang bermanfaat bagi tanaman seperti asam humik, asam fulvat, dan senyawa organik lain. Bahan organik itu sendiri dinilai beradasarkan kualitas dan ketersediaannya. Oleh karena itu diperlukan kombinasi bahan organik yang berguna untuk mencukupi kebutuhan tanaman yang dapat meningkatkan ketersediaan dan serapan hara K tanaman padi hitam (Oryza sativa L.) di tanah sawah. Tujuan penelitian ini adalah mengetahui pengaruh aplikasi kombinasi bahan organik terhadap ketersediaan dan serapan hara K serta pertumbuhan tanaman padi hitam (Oryza sativa L.) di tanah sawah. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Lengkap (RAL) Non Faktorial dengan 7 perlakuan dan 3 ulangan yaitu A (kontrol), B (jerami kompos+kotoran ayam, 50g+50g/pot), C (jerami kompos+kotoran kambing, 50g+50g/pot), D (jerami kompos+kotoran sapi, 50g+50g/pot), E(jerami cacah+kotoran ayam, 50g+50g/pot), F(jerami cacah+kotoran kambing, 50g+50g/pot), G(jerami cacah+kotoran sapi, 50g+50g.pot). Data dianalisis dengan sidik ragam dan uji lanjut Kontras Orthogonal. Hasil penelitian menunjukkan bahwa aplikasi kombinasi bahan organik berpengaruh nyata terhadap parameter pH tanah dan jumlah anakan 6 MST namun berpengaruh tidak nyata terhadap K-dd, K-HCl 25%, tinggi tanaman, dan serapan K tanaman. Aplikasi kombinasi bahan organik memiliki potensi yang sama dalam meningkatkan K-dd, K-HCl 25% dan jumlah anakan tanaman. Penambahan jerami kompos + kotoran sapi berpotensi meningkatkan jumlah anakan tanaman. Organic materials contain beneficial compounds to plants such as humic acid and fulvic acid, and they are valued based on its quality and availability. Therefore we need a combination of organic materials to meet the plants’ need and to increase the availability and K uptake on black paddy (Oryza sativa L.) at paddy fields. The purposes of this study was to determine the effect of the organic matter combination application on the availability and K uptake, as well as the growth of black rice plants (Oryza sativa L.) at paddy fields. This study was conducted using Non Factorial Completely Randomized Design (RAL) with 7 treatments and 3 replications namely A (control), B (compost straw + chicken manure, 50g + 50g / pot), C (compost straw + goat manure, 50g + 50g / pot), D (compost straw + cow dung, 50g + 50g / pot), E (chopped straw + chicken manure, 50g + 50g / pot), F (chopped straw + goat manure, 50g + 50g / pot), G (chopped straw + cow dung, 50g + 50g.pot). Data were analyzed by variance and Orthogonal Contrast further test. The results showed that the application of organic matter combination had a significant effect on the parameters of soil pH and 6 MST number of tillers, but had no significant effect on K-dd, 25% K-HCl, plant height, and plant K uptake. The application of organic materials combination has the same potential in increasing K-dd, 25% K-HCl and the number of plant tillers. The addition of compost + cow manure has the potential to increase the number of plant tillers.

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