scholarly journals Influence of Sri Fertilizer Practice on Yield Components and Grain Yield of Hybrid Rice Varieties in Kenya

2019 ◽  
pp. 1-7
Author(s):  
Wathome N. Mbatha ◽  
Nicholas K. Korir ◽  
Joseph P. Gweyi-Onyango
Keyword(s):  
Grain Yield ◽  
Hybrid Rice ◽  
Organic Fertilizer ◽  
System Of Rice Intensification ◽  
Irrigation Scheme ◽  
Rice Varieties ◽  
Maize Production ◽  
Rice Intensification ◽  
Rice Consumption ◽  
Plot Design

Rice is one of the staple food crops in Kenya and its demand is generally increasing annually especially when maize production has declined due to various factors. The national rice consumption is estimated at 300,000 metric tonnes compared to annual production of 45,000-80,000 where the deficit is met through importation. The low production can be increased through adoption of system of rice intensification methods that can lead to higher yields and sustainable production. Several studies have been conducted on SRI water requirements, plant systems and soil but very little has been done on fertilizer regime on hybrid rice in Kenya. To address this challenge, yield performance of two rice hybrid varieties; Arize Tej Gold and Arize 6444 Gold against a locally inbred variety (BW 196) under SRI fertilizer regime were evaluated at two sites; Mwea irrigation scheme in Kirinyaga County and Ahero irrigation scheme in Kisumu County. The experiment was laid out in a split-plot design where the SRI fertilizer practices were the main plots (2.5 t ha-1 Evergrow, 200 Kg ha-1  SA, 2.5 t/ha Evergrow + 100 Kg ha-1  SA, 2.5 t ha-1 Evergrow +200 Kg ha-1  SA, and a control-without fertilizer) and the rice varieties were the sub-plots and replicated three times. Data was collected on number of grains per panicle, filled grains per panicle and grain yield then subjected to analysis of variance (ANOVA) using SAS 9.2 and means separated using Fischer’s Protected LSD. Significant differences were observed on the number of grains per plant with the Evergrow+100 Kg ha-1 SA and Evergrow+200 Kg ha-1 SA SRI fertilizer treatments showing the highest at 293 and 275 grains per plant respectively under variety Arize Tej Gold at Mwea and 256 grains per plant at Ahero. The high number of grains per plant consequently led to the highest grain yield under the SRI treatments where the Evergrow+100 Kg ha-1 SA treatment had the highest grain yield per plot in Ahero (1202 g) and Mwea (4002 g). The application of 100 Kg ha-1 of SA and organic fertilizer is recommended in rice production.

scholarly journals Effect of Water Management, Systems of Cultivation on Grain Yield and Energy Budget of Rice Varieties

2021 ◽  
pp. 70-81
Author(s):  
G. V. Venkataravana Nayaka ◽  
G. Prabhakara Reddy ◽  
R. Mahender Kumar
Keyword(s):  
Grain Yield ◽  
Energy Performance ◽  
Output Energy ◽  
System Of Rice Intensification ◽  
Net Energy ◽  
Rice Cultivars ◽  
Rice Varieties ◽  
Irrigation Regimes ◽  
Rice Intensification ◽  
Main Plot

Aims of Study: This research focused on assessing the grain yield and energy performance of four rice cultivars under different irrigation regimes and systems of cultivation for suitability of Andhra Pradesh and Telangana. Experiment Design: The split-split plot design with three replications was performed for this study. The treatment comprised of two irrigation regimes viz., Alternate Wetting and Drying (AWD) and saturation as the main plot treatments, three systems of cultivation viz., System of Rice Intensification (SRI), Drum Seeding (DS) and Normal Transplanting (NTP) as the subplot treatments, and four cultivars namely DRR Dhan 42, DRR Dhan 43, MTU-1010, and NLR-34449 as the sub-sub plot treatments. Place and Duration of Study: An experiment was conducted at the Indian Institute of Rice Research, Hyderabad, during the Autumn 2017 and 2018. Result: Among the irrigation regimes, AWD recorded higher grain yield than saturation, Gross output energy, and net energy as compared to saturation. SRI significantly recorded higher grain yield over the NTP method. Among the different rice cultivars, DRR Dhan 43 registers remarkably higher grain yield than other cultivars during 2017 and 2018. The cultivar DRR Dhan 43 recorded higher gross output energy, net energy compared to other rice cultivars.

scholarly journals Performance of landrace and improved rice varieties under the system of rice intensification management in Bajhang District of Nepal

2014 ◽  
Vol 15 ◽  
pp. 1-10 ◽  
Author(s):  
Ram B Khadka ◽  
Hari P Acharya ◽  
Norman Uphoff
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
System Of Rice Intensification ◽  
Average Yield ◽  
Participatory Action ◽  
Rice Varieties ◽  
Yield Increase ◽  
Mountainous Regions ◽  
Randomized Complete Block Design ◽  
Rice Intensification

Participatory action research was conducted in Luinyata VDC of Bajhang district during main rice-growing season of 2012 to evaluate the effects of cultivation practices in rice varieties. The experiment was in factorial randomized complete block design, where two methods of cultivations: System of rice intensification (SRI) and conventional transplanting (CT) and 3 different varieties: Khumal-4, Thapachini and Hansaraj Basmati were evaluated. Data were collected on grain yield, number of tillers, panicle length and number of filled and unfilled grains per panicle. Results averaged across the three varieties showed significantly better crop performance with SRI practices: higher number of tillers per hill, panicles per hill, tillers per m2, panicles per m2, and grain yield. The values of these parameters comparing SRI with conventional practice were, respectively, 24.5 vs. 11.3, 21.5 vs. 9.5, 305 vs. 273, 273.5 vs. 233.8, and 7.6 vs. 4.46 tha-1. Among the varieties evaluated, the highest yield was achieved with the Thapachini (8.11tha-1) using SRI methods. Average yield increase across the three varieties with SRI practice was 70% compared CT. These results indicate the practical relevance of SRI principles for increasing rice production in mountainous regions of Nepal.

scholarly journals A CRITICAL ASSESSMENT OF THE IMPORTANCE OF SEEDLING AGE IN THE SYSTEM OF RICE INTENSIFICATION (SRI) IN EASTERN INDIA

2012 ◽  
Vol 48 (3) ◽  
pp. 326-346 ◽  
Author(s):  
DEBAL DEB ◽  
JÖRG LÄSSIG ◽  
MARIUS KLOFT
Keyword(s):  
Grain Yield ◽  
Nutrient Management ◽  
Unit Area ◽  
Rice Variety ◽  
System Of Rice Intensification ◽  
Rice Varieties ◽  
Seedling Age ◽  
Grain Yields ◽  
Different Ages ◽  
Rice Intensification

SUMMARYA survey of the system of rice intensification (SRI)-related literature indicates that different authors have drawn conflicting inferences about rice yield performances under the SRI, chiefly because the SRI methodology has been variously advocated, interpreted and implemented in the field using different rice varieties, seedling ages at transplantation, cultivation seasons and nutrient management regimes. In particular, the SRI method of single-seedling transplantation (SST) has potential economic advantage due to reduced seed costs, but it is not clear whether SST is an effective management strategy across a range of seedling ages, and whether there is any specific seedling age that is optimal for yield improvement of a given rice variety. This is an important consideration in rain-fed ecosystems where variable rainfall patterns and lack of controlled irrigation make it difficult to reliably transplant at a specific seedling age as recommended for the SRI. We conducted a five year-long experiment on a rain-fed organic farm using a short-duration upland and a medium-duration lowland landrace, following the SRI methodology. Rice seedlings of different ages (6, 10, 14, 18 and 28 days after establishment) were transplanted at 25 cm × 25 cm spacing in three replicated plots. The performance for each landrace was examined with respect to productive tillers, panicle density, total grain counts per hill and grain yield per unit area. Performances of seedlings of different ages were compared with that of control plots that employed all SRI practices with the exception that 28-day-old seedlings were transplanted with three seedlings per hill. The results indicate that (1) the SRI can improve mean panicle density if seedling age ≤ 18 days, but that responses differ between varieties; (2) the number of productive tillers per hill is significantly less in SST than that of multiple seedling transplants (MST) of 28-day-old seedlings of both upland and lowland varieties; (3) the total grain numbers per hill of the lowland variety is significantly greater for 14-day-old SST than 28-day-old MST; (4) the grain yield per unit area from young SRI transplants is significantly greater than that from 28-day-old MST for the lowland variety, although the magnitude of the improvement was small; (5) for the upland variety, grain yields declined with the oldest seedlings, but planting multiple seedlings per hill made the yield of the oldest transplants on par with that of younger seedlings planted singly. Our findings suggest that transplanting younger seedlings under the SRI management may not necessarily enhance grain yields.

scholarly journals Productivity and economics of rice cultivars under different irrigation regimes and systems of cultivation

2021 ◽  
Vol 58 (4) ◽  
pp. 540-554
Author(s):  
Venkataravana Nayaka GV ◽  
Prabhakara Reddy G ◽  
Mahender Kumar R
Keyword(s):  
Grain Yield ◽  
Oryza Sativa L ◽  
System Of Rice Intensification ◽  
Rice Cultivars ◽  
Irrigation Regimes ◽  
Irrigation Practice ◽  
Rice Intensification ◽  
Main Plot ◽  
Use Efficiency ◽  
Plot Design

Shortage of water in rice cultivation is major problem in India. To safeguard and sustain food security in India, it is quite important to increase the productivity of rice under limited water resources. To investigate the performance of rice cultivars under the best method of irrigation and system of cultivation in new condition an experiment was conducted to study the "productivity and water use efficiency of rice (Oryza sativa L.) cultivars under different irrigation regimes and systems of cultivation" on clay loam soils of Indian Institute of Rice Research (IIRR), Rajendranagar, Hyderabad, Telangana during the kharif seasons of 2017 and 2018. The treatment comprised of two irrigation regimes viz., AWD and saturation as main plot treatments, three establishment methods viz., system of rice intensification, drum seeding and TP as subplot treatments and four cultivars namely DRR Dhan 42, DRR Dhan 43, MTU-1010 and NLR-34449 as sub-sub plot treatments summing up to 24 treatment combinations laid out in split-split plot design with three replications. Among the irrigation regimes, AWD irrigation practice recorded higher grain yield (5755, 5952 and 5854 kg ha-1 in 2017, 2018 and pooled means, respectively) than saturation. Among the different systems of cultivation, the SRI recorded significantly higher grain yield (5953, 6129 and 6041 kg ha-1 during 2017, 2018 and in pooled means, respectively) over the TP method. Among the different rice cultivars, DRR Dhan 43 registered remarkably higher grain yield than other cultivars during 2017 and 2018.

scholarly journals APLIKASI BEBERAPA JENIS PUPUK ORGANIK PADA PERTUMBUHAN DAN PRODUKSI PADI SAWAH METODE SRI (System of Rice Intensification)

EUGENIA ◽  
2019 ◽  
Vol 22 (3) ◽  
Author(s):  
J. M. Paulus ◽  
Jein H. Senduk
Keyword(s):  
Grain Yield ◽  
Rice Straw ◽  
Block Design ◽  
Organic Fertilizer ◽  
Organic Fertilizers ◽  
System Of Rice Intensification ◽  
North Sulawesi ◽  
Randomized Block Design ◽  
Rice Intensification ◽  
1000 Grain Weight

ABSTRACT The aim of the research was to studied the growth and production of rice with SRI methods as a response to application some type of organic fertilizer.  The field experiment was conducted in Tara Tara Village, Tomohon North Sulawesi for 5 months. The research arranged in Randomized Block Design with the treatmentof several types of organic fertilizers (PO) : without PO+100 % NPK (P0), PO market waste + 40% NPK (P1), PO legum (P2) + 40% NPK,  PO rice straw (P3) + 40% NPK, and  PO mix + 40% NPK (P4).The result showed that application of some type of organic fertilizer  were significant effect to plant height, number of tillers, number of grains per panicle, 1000 grain weight, and grain yield, except percentage pithy grain per panicle.  The highest of grain yield achieved by the treatment of PO rice straw + 40% NPK and PO legum + 40 % NPK, i.e 9,03 t ha-1 and 8,62 ton ha-1Key words : organic fertilizer,  rice, SRI (System of Rice Intensification)

scholarly journals Performance of Two Rice (Oryza sativa L.) Genotypes Under Modern and Conventional Farming Methods in Three Locations in Iraq

2021 ◽  
Vol 910 (1) ◽  
pp. 012067
Author(s):  
Abdulkadhim Jawad Musa ◽  
Saddam Hussein Abbas ◽  
Khidhir Abbas Hameed
Keyword(s):  
Grain Yield ◽  
Oryza Sativa L ◽  
Cropping System ◽  
System Of Rice Intensification ◽  
Chemical Pollution ◽  
Rice Varieties ◽  
Rice Intensification ◽  
Rice Season ◽  
Jasmine Rice ◽  
South Of Iraq

Abstract The conservation of natural resources like soil and water and reduces chemical pollution in the environment is the desired goal of the directions of improving the performance of important crops for meeting the global food demand. However,System of Rice Intensification (SRI), is a rice cropping system that is consistent with Conservation Agricultural (CA) and Sustainable Agriculture (SA). The current study was aimed to investigate the effects of SRI method on grain yield and its components in two rice varieties compared with conventional practice in farmers' fields (CFM) in different environmental conditions in Iraq. The study was conducted in the fields during the rice season 2019 in three provinces in the south of Iraq (Najaf, Diwaniya and Muthanna). Anber33 and Jasmine rice varieties were grown in each location and the traits were conducted at sites having 2 donum of land (5,000 m2).The trial was performed as a factorial experiment based on a randomized complete blocks design (RCBD) having three blocks. The results showed superior significant of SRI method compared to CFM method in traits (plant height and panicle length, number per panicle, and percentage of unfilled grains). Furthermore, SRI method gave higher grain yield as a percentage with both varieties in each province (25.6% in Muthanna, 24.5% in Najaf, and 13.2% in Diwaniya province) compared to CFM. However, grain yield in Jasmine variety was higher than on Anber33 approximately 50% in three locations in this study. Overall, our results suggest that SRI method is the most convenient method in Iraq conditions due to the increased grain yield in rice compared to the CFM method.

scholarly journals Performance of Two Rice (Oryza Sativa L.) Genotypes Under SRI and Conventional Farming Methods in Three Locations in Iraq

2021 ◽  
Vol 910 (1) ◽  
pp. 012138
Author(s):  
Abdulkadhim Jawad Musa ◽  
Saddam Hussein Abbas ◽  
Khidhir Abbas Hameed
Keyword(s):  
Grain Yield ◽  
Oryza Sativa L ◽  
Cropping System ◽  
System Of Rice Intensification ◽  
Chemical Pollution ◽  
Rice Varieties ◽  
Rice Intensification ◽  
Rice Season ◽  
Jasmine Rice ◽  
South Of Iraq

Abstract The conservation of natural resources like soil and water and reduces chemical pollution in the environment is the desired goal of the directions of improving the performance of important crops that to meet the global food demand. However System of Rice Intensification (SRI), is a rice cropping system that is consistent with Conservation Agricultural (CA) and Sustainable Agriculture (SA). The current study was aimed to investigate the effects of SRI method on grain yield and its components in two rice varieties compared with conventional practice in farmers' fields (CFM) in different environmental conditions in Iraq. Study was conducted in the fields during the rice season 2019 in three provinces in south of Iraq (Najaf, Diwaniya and Muthanna ). Anber33 and Jasmine rice varieties were grown in each location and the traits were conducted at sites having two donum of land (5,000 m2). The trial was performed as factorial expriments based on a randomized complete blocks design (RCBD) having three blocks. The results showed superior significant of SRI method compared to CFM method in traits (plant height and panicle length, number per panicle and percentage of unfilled grains). Furthermore, SRI method gave higher grain yield as percentage with both varieties in each province (25.6% in at Muthanna, 24.5% in Najaf and 13.2% in Diwaniya province) compared to CFM. However, grain yield in Jasmine variety was higher than on Anber33 approximately 50% in three locations in this study. Overall, our results suggest that SRI method is the most convenient method in Iraq conditions due to the increased grain yield in rice compared to the CFM method.

scholarly journals Study on yield potentiality and spatial requirement of rice varieties (Oryza sativa L.) in system of rice intensification (SRI) under red and laterite zone of West Bengal, India

2015 ◽  
Vol 7 (1) ◽  
pp. 353-357
Author(s):  
Kalyan Jana ◽  
G. K. Mallick ◽  
S. Ghosh ◽  
G. Sardar
Keyword(s):  
Grain Yield ◽  
Conventional Method ◽  
West Bengal ◽  
Oryza Sativa L ◽  
Block Design ◽  
Rice Cultivation ◽  
System Of Rice Intensification ◽  
Research Station ◽  
Rice Varieties ◽  
Rice Intensification

Field experiment was conducted at Rice Research Station, Bankura during kharif season 2009 and 2010 to study the yield potentiality and spatial requirement of rice varieties in system of rice intensification (SRI) under red and laterite zone of West Bengal. The experiment was laid out in a randomized complete block design (RCBD) in a three replications with two rice varieties (Swarna and Lalat). Performances of swarna and lalat varieties in SRI as compared to conventional method of rice cultivation (CMRC) were investigated. Swarna (MTU 7029) has yielded maximum grain yield (6.07, 5.66 and 5.86 t ha-1 during 2009, 2010 and in pooled, respectively) from the treatment T7 (25 × 25 cm spacing) under SRI. Lowest grain yield (3.55, 3.23 and 3.38 t ha-1 during 2009, 2010 and in pooled, respectively) was recorded from treatment T9 (Lalat at 20 × 15 cm spacing) under CMRC. SRI technology has potential in increasing more grain yield, it saves seed requirement and irrigation water and chemical fertilizer considering than conventional method of cultivation. Rice cultivation is more sustainable and profitable for the farmers in SRI under the red and laterite zone of West Bengal.

scholarly journals Performance of hybrid rice grown from separated tillers

2019 ◽  
Vol 17 (4) ◽  
pp. 507-513
Author(s):  
FN Kamarum Munira ◽  
Md. Parvez Anwar ◽  
Sabina Yeasmin ◽  
Md. Harun Or Rashid ◽  
Mst Farzana Rahman ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Hybrid Rice ◽  
Rice Variety ◽  
Field Laboratory ◽  
Split Plot ◽  
Rice Seeds ◽  
Four Levels ◽  
Plot Design

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to November 2016 to investigate the performance of separated tillers of hybrid rice variety Dhani Gold. The experiment comprised three times of tiller transplantation viz. 3, 4 and 5 week aged tiller seedlings and four levels of number of tiller seedlings transplanted hill-1 viz. 2, 3, 4 and 5 tiller seedlings hill-1 laid out in a split plot design with 3 replications. The highest plant height was obtained when 3-week aged tiller seedlings were transplanted at the rate of 3 tiller seedlings hill-1. The highest number of total tillers hill-1 and number of effective tillers hill-1 were found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grains panicle-1 was obtained when 4-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grain yield was found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The lowest grain yield was found when 5-week aged tiller seedlings were transplanted with 2 tiller seedlings hill-1 in hybrid rice variety Dhani Gold. Based on the findings of the present study it may be concluded that 3-week old tiller seedlings of Dhani Gold should be transplanted at the rate of 4 or 5 tiller seedlings hill-1 for higher yield. Thus present study confirms the potentiality of growing hybrid rice from separated tillers in case of unavailability of seedlings or to minimize the seed cost of high value hybrid rice seeds. J Bangladesh Agril Univ 17(4): 507–513, 2019

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