scholarly journals 【Short Report】Influence of the Improved System of Rice Intensification (SRI) on Rice Yield, Yield Components and Tillering Characteristics under Different Rice Establishment Methods

2013 ◽  
Vol 16 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Song Chen ◽  
Xi Zheng ◽  
Dangying Wang ◽  
Chunmei Xu ◽  
Xiufu Zhang
Keyword(s):  
Yield Components ◽  
Rice Yield ◽  
System Of Rice Intensification ◽  
Short Report ◽  
Rice Intensification

Effect of Spacing and No. of Seedling per Hill on Growth and Yield Components of Rice cv. Chai Nat 1 under System of Rice Intensification

2018 ◽  
Vol 879 ◽  
pp. 95-100
Author(s):  
Tanaporn Kajonphol ◽  
Sattaya Tonwong ◽  
Sujaree Nonthakod ◽  
Chontira Sangsiri ◽  
Monamorn Precharattana
Keyword(s):  
Yield Components ◽  
Block Design ◽  
Yield Component ◽  
Growth And Yield ◽  
System Of Rice Intensification ◽  
Rice Intensification

We investigated effects of spacing and no. of seedling hill-1on growth and yield component of rice cv. Chai Nat 1 in system of rice intensification. The experiment included 25 × 25 cm, 30 × 30 cm, 40 × 40 cm, and 50 × 50 cm with single seedling hill-1, two seedlings hill-1, and three seedlings hill-1, respectively. The study was in Kasetsart University Chalermphrakiat Sakonnakhon Province Campus during November 2016 to March 2017. Each condition was laid out in a randomized completed block design with three replications. The experiment found that the no. of seedlings hill-1influence in the growth and the yield component of the rice, while the spacing does not. Moreover, there is no interaction between spacing and seedlings hill-1.The three seedling hill-1condition showed the highest in tillering (avg. = 24.13 tillers hill-1). The single seedling hill-1showed the lowest in tillering (avg. = 16.24 tillers hill-1). From this research indicated that optimized seed hill-1in rice cultivated system.

Resource use efficiency in rice production under SRI and conventional method in Assam, India

2016 ◽  
Vol 36 (2) ◽  
Author(s):  
Ishani Parasar ◽  
J. P. Hazarika ◽  
Nivedita Deka
Keyword(s):  
Resource Use ◽  
Rice Yield ◽  
The State ◽  
Rice Production ◽  
System Of Rice Intensification ◽  
Resource Use Efficiency ◽  
Productivity Increase ◽  
Proper Training ◽  
Rice Intensification ◽  
Use Efficiency

To meet the rising demand for rice, the staple food in Assam, the production of rice has to be increased by many folds. Considering the shrinkage of agricultural lands, productivity increase is the only way out to increase the production. System of Rice Intensification (SRI) is reported to enhance rice yield to considerable extent. However, the acceptability of the method by the tradition rice growers of the state is a matter of concern. Further, the resource use status of SRI is yet to be studied systematically in Assam. The present study on resource use in SRI has shown that the resources used in SRI need to be increased for enhanced rice production the state. Awaring the farmers about SRI and imparting proper training on SRI would certainly help the farmers to increase their rice production to make them rice secured.

scholarly journals Estimating Rice Yield under Changing Weather Conditions in Kenya Using CERES Rice Model

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
W. O. Nyang’au ◽  
B. M. Mati ◽  
K. Kalamwa ◽  
R. K. Wanjogu ◽  
L. K. Kiplagat
Keyword(s):  
Solar Radiation ◽  
Grain Yield ◽  
Rice Yield ◽  
Weather Conditions ◽  
System Of Rice Intensification ◽  
Daily Maximum ◽  
Research Fields ◽  
Cropping Season ◽  
Development Data ◽  
Rice Intensification

Effects of change in weather conditions on the yields of Basmati 370 and IR 2793-80-1 cultivated under System of Rice Intensification (SRI) in Mwea and Western Kenya irrigation schemes were assessed through sensitivity analysis using the Ceres rice model v 4.5 of the DSSAT modeling system. Genetic coefficients were determined using 2010 experimental data. The model was validated using rice growth and development data during the 2011 cropping season. Two SRI farmers were selected randomly from each irrigation scheme and their farms were used as research fields. Daily maximum and minimum temperatures and precipitation were collected from the weather station in each of the irrigation schemes while daily solar radiation was generated using weatherman in the DSSAT shell. The study revealed that increase in both maximum and minimum temperatures affects Basmati 370 and IR 2793-80-1 grain yield under SRI. Increase in atmospheric CO2concentration led to an increase in grain yield for both Basmati and IR 2793-80-1 under SRI and increase in solar radiation also had an increasing impact on both Basmati 370 and IR 2793-80-1 grain yield. The results of the study therefore show that weather conditions in Kenya affect rice yield under SRI and should be taken into consideration to improve food security.

scholarly journals Rooting System of Rice Cultivated under System of Rice Intensification (SRI) Method which Improving Rice Yield

2018 ◽  
Vol 25 (2) ◽  
pp. 63
Author(s):  
Nurul Hidayati ◽  
Triadiati Triadiati ◽  
Iswandi Anas
Keyword(s):  
Conventional Method ◽  
Root Respiration ◽  
Rice Yield ◽  
Root Hairs ◽  
Plant Roots ◽  
System Of Rice Intensification ◽  
Aerenchyma Formation ◽  
Rice Plants ◽  
Rice Roots ◽  
Rice Intensification

The development of plant roots is known to play a very important role in the uptake of water and nutrients by rice plants. However, there are few studies on what changes, if any, are induced in the rooting systems of rice plants under System of Rice Intensification (SRI) management. This research evaluated changes of rice roots with SRI method compared to conventional method of irrigated rice cultivation and assessed influences that could improve rice yield. Under SRI management, plant roots were significantly longer and heavier than with conventional method. SRI method also increased the number of root hairs by 60%, and root hairs were healthier and more vigorous compared with conventional method. However, root respiration was not different in the two methods. There was less formation of aerenchyma (air pockets) in rice roots with SRI method, as both the number and size of root aerenchyma were lower with SRI than with conventional method. The SRI method was able to improve the root length, root dry weight compared to the conventional method. The SRI method was also able to increase the number of root hairs by 60% compared with the conventional method. Eh measurements in the soil with SRI method were higher than with conventional method. However, there was no significant different in root respiration. The aerenchyma formation of rice roots in SRI method was lower than conventional method.

scholarly journals Yield and Commercialisation Effects of SRI Interventions in Mngeta, Kilombero District, Tanzania

2021 ◽  
Author(s):  
Devotha B. Mosha ◽  
Gilead Mlay ◽  
Colin Poulton ◽  
Amrita Saha
Keyword(s):  
Rice Plant ◽  
Rice Yield ◽  
System Of Rice Intensification ◽  
Household Level ◽  
Cultivation Practices ◽  
Rice Intensification ◽  
High Yields ◽  
Careful Management ◽  
Paddy Yield ◽  
Suitable Environment

This paper discusses System of Rice Intensification (SRI) interventions and its potential effects on paddy yield and commercialisation in Mngeta division, Kilombero district in Morogoro region, Tanzania. SRI is an innovative agroecological methodology that aims to improve yields and farmers’ profits by creating the most suitable environment for the rice plant to grow. It comprises the precise set of cultivation practices specifically required for careful management of biophysical needs of the rice plant for producing high yields. To assess the effects, we compare between trained and non-trained farmers, as well as between farmers who are members of SRI associations and non-SRI members, on aspects of adoption of SRI interventions, paddy productivity and yields. In turn, the effects of SRI is evaluated in terms of its influence on rice yield per hectare and commercialisation at household level.

Effect of intermittent irrigation following the system of rice intensification (SRI) on rice yield in a farmer’s paddy fields in Indonesia

2018 ◽  
Vol 16 (4) ◽  
pp. 715-723 ◽  
Author(s):  
Bayu Dwi Apri Nugroho ◽  
Kazunobu Toriyama ◽  
Kazuhiko Kobayashi ◽  
Chusnul Arif ◽  
Shigeki Yokoyama ◽  
...  
Keyword(s):  
Rice Yield ◽  
Paddy Fields ◽  
System Of Rice Intensification ◽  
Intermittent Irrigation ◽  
Rice Intensification
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