Visual Measurement of the Number of Direct-Seeded Paddy Rice Seedlings Using a Digital Still Camera

2007 ◽  
Vol 16 (3) ◽  
pp. 107-112 ◽  
Author(s):  
Masaharu Okado
Keyword(s):  
Paddy Rice ◽  
Rice Seedlings ◽  
Visual Measurement ◽  
Digital Still Camera ◽  
Direct Seeded

scholarly journals PENGARUH JARAK TANAM PADA SISTEM TANAM JAJAR LEGOWO TERHADAP PERTUMBUHAN, PRODUKTIVITAS DAN PENDAPATAN PETANI PADI SAWAH DI KABUPATEN SRAGEN JAWA TENGAH

2018 ◽  
Vol 13 (2) ◽  
pp. 188
Author(s):  
Tota Suhendrata
Keyword(s):  
Data Analysis ◽  
Paddy Rice ◽  
Plant Spacing ◽  
Rice Seedlings ◽  
Financial Feasibility ◽  
Input And Output ◽  
Planting Distance ◽  
Paired T Test ◽  
Planting System ◽  
Padi Rice

<p>Abstract : One of the efforts to increase the productivity of paddy rice by setting the<br />right spacing. At this time,  developing technology engine planting of rice seedlings<br />(rice transplanter) which introducing plant spacing ranging from narrow spacing to<br />large plant spacing both on legowo row planting system and tile planting system. With<br />regard to the introduction of these technologies, further research is needed in the<br />effect of plant spacing on growth, productivity (grain yield) and income of paddy rice<br />farmers. The assessment was carried out on the wetland of farmer group of Rukun<br />Tani Sulur  Blimbing Village of Sragen Regency on July – October 2014. The<br />assessment consisted of 3 planting distance treatment of legowo row 2: 1 planting<br />system, ie 20 x 10 x 40 cm, 20 x 13 x 15 cm and 20 x 15 x 40 cm, each treatment<br />repeated 7 times. The area of each treatment is about 0.33 ha. The assessment<br />involves 7 farmers, each farmer carrying out 3 treatment. The seedlings using legowo<br />2:1planting system of rice transplanter. This rice transplanter has 3 combination of<br />plant distance, that is 20 x 10 x 40 cm, 20 x 13 x 15 cm and 20 x 15 x 40 cm. The data<br />collected includes the number of productive tillers, productivity, input and output of<br />farming. Data analysis to compare between 3 treatment by using paired t test. While<br />the analysis of financial feasibility of paddy farming technology using partial budget<br />analysis. The results of this assessment showed that a legowo row 2:1 planting system<br />with plant distance 20 x 15 x 40 cm resulted in highest productive tillers, productivity<br />and income compared to the legowo 2:1 with a narrower plant distance 20 x 10 x 40<br />cm and 20 x 13 x 40 cm.</p><p> </p><p>Abstrak: Salah satu upaya untuk meningkatkan produktivitas padi sawah melalui<br />pengaturan jarak tanam yang tepat. Pada saat ini, berkembang teknologi mesin tanam<br />bibit padi (rice transplanter) yang mengintroduksikan jarak tanam mulai dari jarak<br />tanam sempit sampai dengan jarak tanam lebar baik pada sistem tanam jajar legowo<br />maupun sistem tanam tegel. Berkenaan dengan introduksi teknologi tersebut perlu<br />dilakukan penelitian lebih dalam pengaruh jarak tanam terhadap pertumbuhan,<br />produktivitas (hasil gabah) dan pendapatan petani padi sawah. Pengkajian<br />dilaksanakan pada lahan sawah kelompok tani Rukun Tani Sulur  Desa Blimbing Kec.<br />Sambirejo Kab. Sragen Jawa Tengah pada MT-3 2014. Pengkajian terdiri dari 3<br />perlakuan jarak tanam pada sistem tanam jajar legowo 2:1, yaitu  20 x 10 x 40 cm, 20<br />x 13 x 15 cm dan 20 x 15 x 40 cm dengan 7 kali ulangan. Luas masing-masing<br />perlakuan sekitar 0,33 ha.  Pengkajian melibatkan 7 orang petani, setiap petani<br />melaksanakan 3 perlakuan. Tanam bibit padi menggunakan mesin tanam bibit padi  4<br />baris sistem tanam jajar legowo 2:1. Mesin tanam ini mempunyai 3 kombinasi  jarak<br />tanam, yaitu  20 x 10 x 40 cm, 20 x 13 x 15 cm dan 20 x 15 x 40 cm.  Data yang<br />dikumpulkan meliputi jumlah anakan produktif, produktivitas, input dan output<br />usahatani.  Analisis data untuk membandingkan antara 3 perlakuan jarak tanam dilakukan uji t berpasangan dengan menggunakan software SPSS Statistics 17.0. <br />Sedangkan analisis kelayakan finansial teknologi usahatani padi sawah menggunakan<br />analisis anggaran parsial.  Hasil pengkajian menunjukkan bahwa sistem tanam jajar<br />legowo 2:1 dengan jarak tanam lebar (20 x 15 x 40 cm) menghasilkan jumlah anakan<br />produktif,  produktivitas dan pendapatan yang lebih tinggi dibandingkan sistem tanam<br />jajar legowo 2:1 dengan jarak tanam yang lebih sempit (20 x 10 x 40 cm dan 20 x 13 x<br />40 cm).</p>

scholarly journals Effect of shading on biomass and N mass partitioning in paddy rice seedlings through allometric analysis

2017 ◽  
Vol 45 (2) ◽  
pp. 346-354 ◽  
Author(s):  
F. Zhang ◽  
J. Li ◽  
X.L. Wang ◽  
W. Mao ◽  
H. Zhang ◽  
...  
Keyword(s):  
Paddy Rice ◽  
Rice Seedlings ◽  
Allometric Analysis

Some Factors Affecting Herbicide Selectivity in Upland Rice

Weed Science ◽  
1976 ◽  
Vol 24 (1) ◽  
pp. 63-67 ◽  
Author(s):  
D. Nangju ◽  
D. L. Plucknett ◽  
S. R. Obien
Keyword(s):  
Activated Carbon ◽  
Upland Rice ◽  
Rice Seed ◽  
Soil Leaching ◽  
Rice Seedlings ◽  
Factors Affecting ◽  
Degree Of Protection ◽  
Flooded Rice ◽  
Transplanted Rice ◽  
Direct Seeded

Several methods were used to overcome herbicide phytotoxicity to upland rice (Oryza sativaL., ‘IR8′). Seed pelleting with activated carbon and band application of activated carbon slurry over the rice seed were ineffective in reducing the toxicity of chloramben (3-amino-2,5-dichlorobenzoic acid) and atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] to upland rice. In contrast, a 2.5-cm layer of activated carbon and vermiculite mixture (1:1) placed over the rice seed was effective in overcoming the toxicity of these herbicides. Deep sowing (3.0 to 4.5 cm) of rice seed was adequate in protecting upland rice from herbicides which are toxic to direct seeded, flooded rice but are not toxic to transplanted rice. The degree of protection from deep sowing, however, was determined by site of uptake, herbicide adsorption by soil, leaching, and inherent toxicity of the herbicides to rice seedlings.

scholarly journals Transcriptomic, proteomic, and physiological comparative analyses of flooding mitigation of the damage induced by low-temperature stress in direct seeded early indica rice at the seedling stage

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Wenxia Wang ◽  
Jie Du ◽  
Liming Chen ◽  
Yongjun Zeng ◽  
Xueming Tan ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Stress ◽  
Molecular Mechanisms ◽  
Tricarboxylic Acid Cycle ◽  
Indica Rice ◽  
Low Temperature Stress ◽  
Seedling Stage ◽  
Differentially Expressed ◽  
Rice Seedlings ◽  
Direct Seeded

Abstract Background Low temperature (LT) often occurs at the seedling stage in the early rice-growing season, especially for direct seeded early-season indica rice, and using flooding irrigation can mitigate LT damage in rice seedlings. The molecular mechanism by which flooding mitigates the damage induced by LT stress has not been fully elucidated. Thus, LT stress at 8 °C, LT accompanied by flooding (LTF) and CK (control) treatments were established for 3 days to determine the transcriptomic, proteomic and physiological response in direct seeded rice seedlings at the seedling stage. Results LT damaged chloroplasts, and thylakoid lamellae, and increased osmiophilic bodies and starch grains compared to CK, but LTF alleviated the damage to chloroplast structure caused by LT. The physiological characteristics of treated plants showed that compared with LT, LTF significantly increased the contents of rubisco, chlorophyll, PEPCK, ATP and GA3 but significantly decreased soluble protein, MDA and ABA contents. 4D-label-free quantitative proteomic profiling showed that photosynthesis-responsive proteins, such as phytochrome, as well as chlorophyll and the tricarboxylic acid cycle were significantly downregulated in LT/CK and LTF/CK comparison groups. However, compared with LT, phytochrome, chlorophyllide oxygenase activity and the glucan branching enzyme in LTF were significantly upregulated in rice leaves. Transcriptomic and proteomic studies identified 72,818 transcripts and 5639 proteins, and 4983 genes that were identified at both the transcriptome and proteome levels. Differentially expressed genes (DEGs) and differentially expressed proteins (DEPs) were significantly enriched in glycine, serine and threonine metabolism, biosynthesis of secondary metabolites, glycolysis/gluconeogenesis and metabolic pathways. Conclusion Through transcriptomic, proteomic and physiological analyses, we determined that a variety of metabolic pathway changes were induced by LT and LTF. GO and KEGG enrichment analyses demonstrated that DEGs and DEPs were associated with photosynthesis pathways, antioxidant enzymes and energy metabolism pathway-related proteins. Our study provided new insights for efforts to reduce the damage to direct seeded rice caused by low-temperature stress and provided a breeding target for low temperature flooding-resistant cultivars. Further analysis of translational regulation and metabolites may help to elucidate the molecular mechanisms by which flooding mitigates low-temperature stress in direct seeded early indica rice at the seedling stage.

scholarly journals Effect of Fallow Duration on Growth of Paddy Rice Seedlings and Mineralized Nitrogen in Organic Fertilizer-amended Soil

2019 ◽  
Vol 54 (4) ◽  
pp. 225-235
Author(s):  
Hideaki Hirai ◽  
Eiji Asatsuma ◽  
Koichi Hoshino ◽  
Haruo Tanaka ◽  
Yukitsugu Takahashi
Keyword(s):  
Organic Fertilizer ◽  
Paddy Rice ◽  
Rice Seedlings ◽  
Amended Soil

scholarly journals Estimating the Heading Dates of Direct-Seeded Paddy Rice Using a Degree Day Accumulation

2004 ◽  
Vol 13 (2) ◽  
pp. 109-116
Author(s):  
Masaharu Okado ◽  
Yoshiaki Nakamura ◽  
Yukiya Minami ◽  
Satoshi Oke
Keyword(s):  
Paddy Rice ◽  
Degree Day ◽  
Direct Seeded
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