scholarly journals Studies on the Emergence of Rice Seedlings in the Direct-Sowing Culture : IV. Strength of plumule-elongation in paddy rice plants

1971 ◽  
Vol 40 (4) ◽  
pp. 415-419 ◽  
Author(s):  
Jun INOUYE ◽  
Tsutomu ANAYAMA
Keyword(s):  
Paddy Rice ◽  
Rice Seedlings ◽  
Rice Plants ◽  
Direct Sowing

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

scholarly journals Comparative study on the influence of silicon and selenium to mitigate arsenic induced stress by modulating TCA cycle, GABA and polyamine synthesis in rice seedlings

2021 ◽  
Author(s):  
Susmita Das ◽  
Barsha Majumder ◽  
Asok Kumar Biswas
Keyword(s):  
Tca Cycle ◽  
Future Application ◽  
Rice Seedlings ◽  
Respiratory Enzymes ◽  
Rice Plants ◽  
Regulatory Enzymes ◽  
Joint Application ◽  
Defensive Role ◽  
Gaba Accumulation

Abstract Arsenic contamination of groundwater is a major concern for its use as drinking water and crop irrigation in many regions of the world. Arsenic is absorbed by rice plants from arsenic contaminated water during irrigation, hampers growth and agricultural productivity. The aim of the study was to mitigate the activity of TCA cycle, synthesis of γ-aminobutyric acid (GABA) and polyamines (PAs) in rice (Oryza sativa L. cv. MTU-1010) seedlings under arsenate (As-V) stress [25 µM, 50 µM and 75 µM] by silicon (Si) [2 mM] and selenium (Se) [5 µM] amendments, and to investigate which chemical was more potential to combat this threat. As(V) application decreased the activities of tested respiratory enzymes while the levels of organic acids (OAs) were increased in the test seedlings. Co-application of Si and As(V) increased the activities of respiratory enzymes, consequently further increased accumulation of OAs that were more than Se with As(V) application in the test seedlings. GABA accumulation along with the activities of its regulatory enzymes were enhanced under As(V) stress. During joint application of Si and As(V) and Se and As(V) said parameters were decreased showing defensive role of these chemicals to resist As(V) toxicity in rice but amendment of Si was more potential than Se amendment resulted reduction of stress induced damage in the test seedlings. PAs trigger tolerance mechanism against stress in plants. PAs viz., Putrescine, spermidine and spermine were synthesized more during Si and Se amendments in As(V) contaminated rice seedlings to combat the effect of stress. Si amendment substantially modulated the toxic effects caused by As(V) over Se amendment in As(V) challenged test seedlings. Thus in future application Si enriched fertilizer will be beneficial than application of Se enriched fertilizer to grow rice plants with normal vigor in arsenic contaminated soil.

scholarly journals ​Development and Performance Evaluation of a Two-row Mechanical Paddy Transplanter

2021 ◽  
Author(s):  
Sapunii Sebastian ◽  
E.V. Thomas
Keyword(s):  
Field Capacity ◽  
Machine Construction ◽  
Asian Countries ◽  
Rice Seedlings ◽  
Huge Amount ◽  
Hilly Region ◽  
Actual Field ◽  
And Performance ◽  
Four Bar Linkage ◽  
Direct Sowing

Background: Paddy is one of the most important staple food in most south-east Asian countries. It is grown either by direct sowing or by transplanting under wetland conditions depending upon the availability of water. India produces 116.48 million tonnes of rice with a productivity of 2659 kg ha-1. Manual transplanting of rice seedlings by hand is generally done in stooping posture which is laborious and drudgery. It also requires a huge amount of labour during peak season. Considering the need and to suit the hilly region, a two-row manually operated paddy transplanter was developed. Methods: For picking the seedlings, a four-bar mechanism was selected as the basis of design. The machine construction consists of a float, seedling tray, fixed-fork type finger, chain sprocket system and lugged wheel. For operation, the operator has to rotate the crank handle which transmits the motion through the chain sprocket system and four-bar linkage which in turn picks the seedlings and plants them onto the soil. Result: The machine was tested in the actual field condition and was working satisfactorily. The designed fixed fork-type finger can hold 5 to 8 seedlings at a time. The developed machine was found to be comfortable working at a speed of 0.5 kmph. The actual field capacity of the machine was 0.02 ha/h.

Sign in / Sign up

Export Citation Format

Share Document