scholarly journals Patterns of Soil Nitrogen Release in Paddy Fields of Warm Regions in Japan and Diagnosis of Fertilizer Application. III. Evaluation of amount of soil nitrogen supplied from paddy fields in relation to rice yield.

1994 ◽  
Vol 63 (3) ◽  
pp. 411-417 ◽  
Author(s):  
Tomizou YAMAMOTO ◽  
Kouhei TANAKA ◽  
Kazuhiro KADOSIGE
Keyword(s):  
Soil Nitrogen ◽  
Rice Yield ◽  
Fertilizer Application ◽  
Paddy Fields ◽  
Nitrogen Release

Reduction of nitrogen fertilizer application under different crop rotation systems in paddy fields of Taihu Area

2011 ◽  
Vol 19 (1) ◽  
pp. 24-31 ◽  
Author(s):  
Jun QIAO ◽  
Ting-Mei YAN ◽  
Feng XUE ◽  
Lin-Zhang YANG ◽  
Ping LU
Keyword(s):  
Crop Rotation ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Paddy Fields

RELATION OF AVAILABLE SOIL NITROGEN TO RICE YIELD

Soil Science ◽  
1980 ◽  
Vol 129 (4) ◽  
pp. 229-237 ◽  
Author(s):  
M. T. DOLMAT ◽  
W. H. PATRICK ◽  
F. J. PETERSON
Keyword(s):  
Soil Nitrogen ◽  
Rice Yield

scholarly journals Effects of Biochar Amendment on CO2 Emissions from Paddy Fields under Water-Saving Irrigation

2018 ◽  
Vol 15 (11) ◽  
pp. 2580 ◽  
Author(s):  
Shihong Yang ◽  
Zewei Jiang ◽  
Xiao Sun ◽  
Jie Ding ◽  
Junzeng Xu
Keyword(s):  
Co2 Emissions ◽  
Rice Yield ◽  
Rice Paddy ◽  
C Sequestration ◽  
Sensitivity Coefficient ◽  
Water Saving ◽  
Paddy Fields ◽  
Flood Irrigation ◽  
Controlled Irrigation ◽  
Biochar Amendment

The role of carbon pool of biochar as a method of long-term C sequestration in global warming mitigation is unclear. A two-year field study was conducted to investigate the seasonal variations of CO2 emissions from water-saving irrigation paddy fields in response to biochar amendment and irrigation patterns. Three biochar treatments under water-saving irrigation and one biochar treatment under flooding irrigation were studied, and the application rates were 0, 20, 40, and 40 t ha−1 and labeled as CI + NB (controlled irrigation and none biochar added), CI + MB (controlled irrigation and medium biochar added), CI + HB (controlled irrigation and high biochar added), and FI + HB (flood irrigation and high biochar added), respectively. Results showed that biochar application at medium rates (20 t ha−1) decreased CO2 emissions by 1.64–8.83% in rice paddy fields under water-saving irrigation, compared with the non-amendment treatment. However, the CO2 emissions from paddy fields increased by 4.39–5.43% in the CI + HB treatment, compared with CI + NB. Furthermore, the mean CO2 emissions from paddy fields under water-saving irrigation decreased by 2.22% compared with flood irrigation under the same amount of biochar application (40 t ha−1). Biochar amendment increased rice yield and water use efficiency by 9.35–36.30% and 15.1–42.5%, respectively, when combined with water-saving irrigation. The CO2 emissions were reduced in the CI + MB treatment, which then increased rice yield. The CO2 emissions from paddy fields were positively correlated with temperature. The highest value of the temperature sensitivity coefficient (Q10) was derived for the CI + MB treatment. The Q10 was higher under water-saving irrigation compared with flooding irrigation.

scholarly journals PELUANG PENINGKATAN PRODUKSI PADI PADA DI LAHAN RAWA LEBAK LAMPUNG

2017 ◽  
Vol 36 (1) ◽  
pp. 13
Author(s):  
Yulia Pujiharti
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Fresh Water ◽  
Rice Yield ◽  
Fertilizer Application ◽  
Rice Production ◽  
Land Productivity ◽  
Yield Gap ◽  
Integrated Crop Management ◽  
Self Sufficiency

<p><em><strong>Opportunity to Increase Rice Production in Fresh Water Swampy Land in Lampung</strong></em></p><p>The area of fresh water swampy land in Lampung in 2012 was 55,714 ha with rice productivity of 5.13 t/ha so it is possible to be increased. The article discusses opportunity to increase rice production in fresh water swampy land in Lampung. Increasing rice yield can be done by enhancing cropping index and land productivity, lowering yield gap and decreasing yeld loss. Cropping index in fresh water swampy land can be increased by cultivating rice with surjan system, while rice yield is increased by integrated crop management (ICM) which its components include the use of improved varieties, planting with legowo 2: 1 or 4: 1, fertilizer application according to plant need, water management to prevent rice plant from submerging or drought, and integrated pest management. Rice yield gap is decreased by implementing location specific technologies and intensifying counseling to farmers, while yield loss is lowered by applying integrated pest management and using agricultural tools and machineries in rice farming. These production increases have an impact on the regional and national food availability in an effort to achieve rice self-sufficiency.</p><p>Keywords: Rice, production, fresh water swampy land, growth source</p><p align="center"><strong><br /></strong></p><p align="center"><strong>ABSTRAK</strong></p><p>Luas lahan rawa lebak di Provinsi Lampung pada tahun 2012 mencapai 55.714 ha dengan tingkat produktivitas padi 5,13 t/ha sehingga masih berpeluang ditingkatkan. Tulisan ini membahas peluang peningkatan produksi padi di lahan rawa lebak di Lampung. Peningkatan produksi dapat dilakukan melalui peningkatan indeks pertanaman (IP) dan produktivitas lahan, mengurangi senjang hasil, dan menurunkan kehilangan hasil. Indeks pertanaman di lahan rawa lebak dapat ditingkatkan dengan menerapkan sistem surjan. Sementara produktivitas ditingkatkan melalui pengelolaan tanaman terpadu (PTT) dengan komponen teknologinya antara lain penggunaan varietas unggul baru, cara tanam legowo 2:1 atau 4:1, pemberian hara sesuai kebutuhan tanaman, pengelolaan tata air sehingga tanaman padi terhindar dari terendam atau kekeringan, serta pengelolaan hama dan penyakit secara terpadu. Penurunan senjang hasil dapat dilakukan dengan menerapkan teknologi spesifik lokasi dan mengintensifkan penyuluhan ke petani. Sementara kehilangan hasil dapat dikurangi melalui penerapan pengelolaan hama dan penyakit secara terpadu dan penggunaan alat dan mesin pertanian pada kegiatan usaha tani. Peningkatan produksi ini akan berdampak pada peningkatan ketersediaan pangan daerah dan nasional dalam upaya mencapai swasembada beras.</p><p>Kata Kunci: Padi, produksi, rawa lebak, sumber pertumbuhan</p><p> <em></em></p>

scholarly journals Effect of Plant Revitalization Hormone and Foliar Fertilization on Growth and Yield of Boro Rice

2015 ◽  
Vol 19 (1) ◽  
pp. 33-39
Author(s):  
MR Karim ◽  
MM Rashid ◽  
MA Salam ◽  
MA Mazid ◽  
MA Momin ◽  
...  
Keyword(s):  
Agricultural Research ◽  
Rice Yield ◽  
Block Design ◽  
Fertilizer Application ◽  
Plant Performance ◽  
Growth And Yield ◽  
Liquid Fertilizer ◽  
Significant Difference ◽  
Plant Growth Promoting ◽  
Boro Rice

Correction: In the last line of the abstract, the word 'increase' was replaced with the word 'reduced' on 25th November 2015. The correct sentence now reads "The application of PRH, Calsol and Magic Growth significantly reduced rice yield than that obtained with recommended fertilizer dose."AbstractInherent soil fertility and application of exogenous fertilizer generally affect rice yield. Fertilization would be soil fertilization or foliar feeding through leaf area. Plant growth promoting substances also improve plant performance through modulation of its growth and yield. The study was conducted at BRAC Agricultural Research and Development Center (BARDC), Gazipur. The aim of the study was to find out the growth and yield of Boro rice as influenced by plant revitalization hormone (PRH) and liquid fertilizer Calsol and Magic Growth during dry season 2012-13 using randomized complete block design with three replications. Treatment consists of; T1=Recommend fertilizer dose of NPKS and Zn (Control), T2=T1+ recommended PRH, T3=T2 + half of the PRH, T4=Half of doses of T1 + PRH, T5=PRH, T6=Recommended fertilizer dose of NPK with three N top dressed along with Calsol, T7=Recommended fertilizer dose of NPK with 1st and 3rd split of N application and along with three split of Calsol application, T8=Recommended dose of liquid fertilizer Magic Growth. The effect of different treatment combinations of PRH and liquid fertilizer Calsol and Magic Growth showed significant difference (p<0.05) in panicle m-2, unfilled grain panicle-1, total grain panicle-1, and grain yield. However, none of the treatments out yielded the existing fertilizer application method. The application of PRH, Calsol and Magic Growth significantly reduced (corrected on 25th Nov. 2015) rice yield than that obtained with recommended fertilizer dose.Bangladesh Rice j. 2015, 19(1): 33-39

Pengaruh Baja Nitrogen (N) dan Kalium (K) Terhadap Padi Varieti MR 269 dan MR 284 di Sungai Nibong (PBLS)

2014 ◽  
Vol 70 (6) ◽  
Author(s):  
Ahmad Arif Ismail ◽  
Ismail Che Haron ◽  
Wan Zaki Wan Mamat ◽  
Muhammad Naim Fadzli Abd. Rani
Keyword(s):  
Significant Interaction ◽  
Rice Yield ◽  
Block Design ◽  
Fertilizer Application ◽  
Positive Influence ◽  
Rice Varieties ◽  
Fertilizer Recommendation ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
K Fertilizer

An experiment to study influence of nitrogen (N) and potassium (K) on new rice varieties MR 269 and MR 284 has been carried out in Parit 12 Sungai Nibong, Sekinchan, 45400, Sabak Bernam, Selangor from February 2012 to January 2013. Compatibility tests need to be carried out on current fertilizer recommendation towards these new rice varieties. There are three rates used in this experiment which are 0, 100 and 200 kg/ha for both N and K fertilizer. The experimental design used in this experiment is Randomized Complete Block Design (RCBD) with 3 replications. A set of 54 small plots were erected with 4 m x 4 m in size. Manual Teknologi Penanaman Padi Lestari is used as crop management guideline for this experiment. Results indicated no significant interaction between N and K on yield of the newly tested rice varieties. The rice yield was significantly affected by N but not by K. Results suggest that there is significant interaction between cropping season and N towards rice yield. Analysis showed that fertilizer application of N up to 200 kg/ha contributed to higher yield in first season (Off-season). However, yield increment in season 2 (main season) only took place up until N fertilizer application at 100 kg/ha and began to drop when subsequent additional of 200 kg/ha. This study indicated that number of panicle and number of seed per panicle had positive influence to the rice yield.

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