scholarly journals Development of a Water Storage-type Deep-irrigation Method for Rice Aimed at Increasing the Environment-protecting Function of Paddy Fields. Growth and yield of rice in a year with a hot summer in the Tohoku region.

1999 ◽  
Vol 68 (4) ◽  
pp. 476-481 ◽  
Author(s):  
YUSUKE GOTO
Author(s):  
G. Senthil Kumar ◽  
T. Ramesh ◽  
K. Subrahmaniyan ◽  
V. Ravi

A field experiment was conducted at Tamil Nadu Rice Research Institute, Aduthurai, Tamil Nadu during Summer, 2013 and 2014 to study the response of blackgram varieties to different levels of irrigation through applied sprinkler system. Four levels of irrigation I1 - 50 per cent pan evaporation through sprinkler irrigation, I2 - 75 per cent pan evaporation through sprinkler irrigation, I3 - 100 per cent pan evaporation through sprinkler irrigation and I4 - Surface irrigation in main plot and three blackgram varieties viz., ADT 5, PBG 4 and VBN BG 6 were evaluated in split plot design with three replications. Sprinkler irrigation at 100% pan evaporation in variety ADT 5 gave significantly better growth and yield attributes and higher grain yield of 1217 kg/ha which was at par with surface irrigation method in ADT 5 variety (1184 kg/ha). Surface irrigation method utilized higher amount of irrigation water of 428.1 mm and 413.6 mm, whereas, sprinkler irrigation at 100% pan evaporation utilized minimum amount of irrigation water of 329.2 mm and 308.7 mm during summer 2013 and 2014, respectively. Water saving under sprinkler irrigation at 100% pan evaporation was 23.1% and 25.4% as compared to surface irrigation method during summer 2013 and 2014, respectively.


Author(s):  
Junaidi Junaidi ◽  
Djoko Rahardjo

This research aims to determine the real interaction between bokashi dose treatment and spacing models on the growth and yield of paddy plants. The study used a 3 x 3 factorial with 3 replications. The first factor was the spacing model which consists of 3 levels, namely J1 = tile spacing model (20 x 20 cm), J2 = Jajar Legowo 4:1 (20 cm x 40 cm x 10 cm), and J3 = Jajar Legowo 2:1 (20 cm x 40 cm x 10 cm). The second factor was the dosage of bokashi fertilizer which consists of 3 levels, namely P1 = 5 tonnes per hectare, P2 = 10 tonnes per hectare, and P3 = 15 tonnes per hectare. The research discovered that there was an interaction effect on plants aged 45 days after planting as well as an increase in yield in the form of an increase in grain weight per plant clump. Model treatment also had a significant effect on plant height at the age of 15 and 30 days after planting. In addition, there were also changes in the number of tillers, productive tillers, seeds per panicle, panicle length, and grain weight per plot for all observed ages. The 4:1 legowo row model treatment resulted in the best growth and production of paddy fields, while the highest production was produced by the legowo row 2:1 treatment. Bokashi dosage treatment was 15 tons per hectare.Isi artikel ini bertujuan mengetahui adanya interaksi yang nyata antara perlakuan dosis bokasi dan model jarak tanam terhadap pertumbuhan dan hasil tanaman padi. Penelitian menggunakan rancangan acak kelompok (RAK) faktorial 3 x 3 dengan 3 kali ulangan. Faktor pertama adalah model jarak tanam yang terdiri dari 3 taraf, yaitu J1 = model jarak tegel (20 x 20 cm), J2 = Jajar Legowo 4 :1 (20 cm x 40 cm x 10 cm), dan J3 = Jajar Legowo 2 : 1 (20 cm x 40 cm x 10 cm). Faktor kedua adalah dosis pupuk bokashi yang terdiri dari 3 taraf yaitu P1 = 5 ton/ha, P2 = 10 ton/ha, dan P3 = 15 ton/ha. Riset yang dilakukan membuktikan bahwa adanya pengaruh interaksi pada tanaman umur 45 hari serta peningkatan hasil panen berupa berat gabah per rumpun yang mengalami kenaikan. Perlakuan model juga memiliki pengaruh nyata terhadap tinggi tanaman pada usia 15 dan 30 hari sejak masa tanam. Selain itu juga adanya perubahan pada jumlah anakan, anakan produktif, biji per malai, panjang malai, dan berat gabah per petak semua umur pengamatan. Perlakuan model jajar legowo 4 : 1 menghasilkan pertumbuhan dan produksi padi sawah pertanaman paling baik, sedangkan produksi paling tinggi dihasilkan oleh perlakuan jajar legowo 2 : 1. Perlakuan dosis bokasi 15 ton/ha


2013 ◽  
Vol 31 (2) ◽  
pp. 179-185 ◽  
Author(s):  
Kwang Soo Kim ◽  
Yong Beum Lee ◽  
Seung Jae Hwang ◽  
Byoung Ryong Jeong ◽  
Chul Geon An

2013 ◽  
Vol 17 (3) ◽  
pp. 239-244
Author(s):  
M Zulman Harja Utama ◽  
Ismed Wahidi ◽  
. Sunadi

The main obstacle to increase rice yield in new opening paddy fields, is that high levels of dissolved ferrous ions(Fe2+) which toxic to plants. This research aimed to study the growth and yield of several rice cultivars tolerant toFe2+ in the new opening paddy fields with multi-packet technology. The experiment was conducted from April toDecember 2010, at the new opening pay fields in Koto Baru of Dharmasraya District, West Sumatra. Experimentsused a factorial in a Completely Randomized Design with three replications. The first factor was, selected ricevarieties which were: Krueng Aceh; IR 36; Tukad Balian; Ciherang; and Cisokan. The second factor was thedifferent plant spacing which were a 30 × 30 cm with two seeds per hole, and Plant spacing (10 × 10) × 30 × (10 × 10)cm with one seed per hole. The rice cultivation with packet technology can improved the growth and yield of paddyrice cultivated in new opening paddy field high in Fe2+. Technology package consisting a combination of ricevariety (Krueng Aceh, IR36, and Tukad Balian) + SRI system + peat amelioran 20 Mg ha-1 + plant spacing (10 × 10)× 30 × (10 × 10) cm with one seed per hole, had the best growth and yield of rice cultivated in the new opening fieldshigh in Fe2+, especially in Koto Baru of Dharmasraya District, Krueng Aceh was a variety with the highest grain production by 5.65 Mg ha-1.Keywords: Fe2+; new fields; rice cultivar; technology[How to Cite: Utama MZH, I Wahidi and Sunadi. 2012. Response of Some Rice Cultivars in New Opening Paddy Fields with High Fe2+ Using Multi-packet Technology. J Trop Soils, 17 (3) : 234-244. doi: 10.5400/jts.2012.17.3.239][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.239] 


2008 ◽  
Vol 33 (2) ◽  
pp. 159-165 ◽  
Author(s):  
Thai Khanh Phong ◽  
Hirozumi Watanabe ◽  
Thai Quoc Hien ◽  
Son Hong Vu ◽  
Taku Tanaka ◽  
...  

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