scholarly journals SRI-TRAY: BREAKTHROUGH IN NURSERY MANAGEMENT FOR THE SYSTEM OF RICE INTENSIFICATION

2016 ◽  
Vol 78 (1-2) ◽  
Author(s):  
Zubairu Usman Bashar ◽  
Aimrun Wayayok ◽  
Amin M. S. M ◽  
Mohammad Razif Mahadi ◽  
Bande Y. M.
Keyword(s):  
Leaf Length ◽  
Nursery Area ◽  
System Of Rice Intensification ◽  
Significant Saving ◽  
Mean Values ◽  
Growth Performances ◽  
Labour Requirement ◽  
Rice Intensification ◽  
Transplanting Shock ◽  
Nursery Management

The major challenges envisaged by SRI practitioners to nursery management are high labour requirement and transplanting shock due to traumatic condition at the nursery. This study was aimed at creating innovative techniques for increasing the quality and transplanting potentials of seedlings vis- ă –vis to savings on water, seeds, nursery space as well as reducing the transplanting shock. It involved the use of the developed SRI-Tray having 924 square growing cavities with sliding base to facilitate seedling transfer. The parameters used were water requirement (WR), growing media (GM), nursery perimeter (NP) and age of seedling (AS). These were compared with conventional nursery methods (dry-bed, wet-bed and tray) to evaluate the growth performances for 10 days on seedling height [SH], leaf length [LL], leaf number [LN] and root length [RL]. The SAS revealed that SRI-tray had the highest significant values for SH, LL and RL with the mean values of 157.2mm, 110.3 mm and 89 mm. when compared with conventional practices on tray (125mm,  92mm and  52mm), dry-bed (86mm, 64mm and 42mm). The seed rate, nursery area and seedling age to support one hectare of planting area were found as 5.34kg, 36m2 and 8-10 days on SRI-tray against 15-50kg, 250 – 500m2 and 15 – 30 days on conventional practices. The water management was found to be high on conventional tray (Flat tray) with a nursery area of 250m2, if supply at 4cm height for 20 days, and then total water use for conventional flat tray is 200m3. While a significant saving was observed on SRI-tray with only 18m3 with a nursery space of about 36m2 when supplied at 5cm for 10 days.

Impact Evaluation of the System of Rice Intensification Scheme in Chhattisgarh

2021 ◽  
pp. 176-181
Keyword(s):  
System Of Rice Intensification ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Transfer Of Technology ◽  
Farm Mechanization ◽  
Labour Requirement ◽  
Nursery Management ◽  
Paddy Cultivation ◽  
The Cost ◽  
Benefit Cost

The study was conducted in Chhattisgarh to compare the cost and return of rice in adopters and non-adopters and identify constraints in adopting the SRI technology. The total labour cost was highest in adopters than non-adopters, and input cost was ( 8723.42) in adopters and was less than non-adopters ( 9772.75). It was also found that the cost of adopters' cultivation was ( 49885.17) higher than non-adopters ( 41241.82). The result showed that the yield of adopters (67.34 q/ha) was higher than the non-adopters (49.66 t/ha). The gross and net incomes were higher on adopters' farms than non-adopters. The benefit-cost ratio was higher in adopters (1:2.03) than non-adopters (1:1.82). Timely availability of skilled labour (62 percent) with higher than more labour requirement (50 percent), unavailability of implements (48 percent), lack of training (46 percent), drudgery in using cono-weeder (40 percent), unskilled transplanting (34 percent) and improper nursery management (30 percent) the other constraints were assured irrigation, lack of farm mechanization high cost of pesticides, high cost of manures and fertilizers. The primary suggestion regarding the SRI method of paddy cultivation was to develop chemical and mechanical weed control and ensure the availability of cono-weeder and marker in the market. Timely guidance should be given by the concerned persons in the transfer of technology to the farmers' field of immense help in this direction.

scholarly journals Evaluation of Different Designs of Isolated Cells to Raise Single Rice Seedlings for SRI Mechanized Transplanting

2020 ◽  
Author(s):  
Mohd Amin Mohd. Soom ◽  
Azwan Awang ◽  
Mohamadu Boyie Jalloh
Keyword(s):  
Grid Cell ◽  
Rice Seedling ◽  
Paddy Fields ◽  
System Of Rice Intensification ◽  
Isolated Cells ◽  
Rice Intensification ◽  
Transplanting Shock ◽  
Square Cells ◽  
Paddy Farmers ◽  
Single Rice

Numerous benefits of the system of rice intensification (SRI) have been documented since SRI was popularized 30 years ago. To date, more than 58 rice growing countries are practicing SRI, covering around 4 million ha of paddy fields and involving more than 10 million farmers. Many paddy farmers shy away from practicing SRI due to  extreme labour endurance and number of labors required, especially during transplanting and frequent weeding. The manual transplanting technique to ensure proper root establishment of the seedlings, makes SRI less appealing to many paddy farmers. Furthermore, the transplanting shock is a problem arises from manual transplanting technique needs to be solved  that resulted to damaged roots causing  delays in crop establishment and reducing productivity. Mechanized transplanting of the young single seedlings into the paddy fields at a wider  plantation area  eliminates drudgery and enables better exposure to sunlight, water, air, and nutrients. This paper presents a solution to overcome the problem of transplanting shock and the  back-breaking manual transplanting, which was achieved by containing the roots of each seedling in a grid of isolated cells. Several designs of the isolated cells to contain the root system were fabricated and tested. These include using aluminum square cells, polyvinyl chloride pipe circular cells, biodegradable grid cells, biodegradable conical capsules, and germinated seeds sowed in a grid without isolated cells. The typical grid cell size was 15 mm by 15 mm with a depth of each cell varied from 40 mm to 60 mm. The most promising design was one with single seedlings raised in bio-degradable capsules arranged close together to fit the conventional rice seedling tray of 300 mm by 600 mm and can accommodate 684 capsules per tray. Upon reaching 2-3 leaf stage, the seedlings with undisturbed roots are ready to be transplanted into the paddy fields using the currently available rice transplante rs.

A socioeconomic study on pros and cons of SRI method of paddy cultivation in ormanjhi block of Ranchi district, Jharkhand

2017 ◽  
Author(s):  
Punit Kumar Agarwal ◽  
Ajay Kumar
Keyword(s):  
Green Revolution ◽  
System Of Rice Intensification ◽  
Traditional System ◽  
Rice Intensification ◽  
Rice Yields ◽  
Nursery Management ◽  
Pros And Cons ◽  
Production Technologies ◽  
Paddy Cultivation ◽  
The 1960S

Rice is a staple food for more than half of the world’s population. World rice production nearly doubled since the 1960s to the 1980s, mainly due to the green revolution. A major issue with the traditional system of paddy production, particularly green revolution technology is input intensive and favors cash rich farmers. Increasing prices of agricultural inputs prevent poor farmers from completely adopting modern production technologies. Water demand by rice farmers were also continue increasing under such circumstances, any strategy that could produce higher rice yields with less water and less expenditure is the need of the day. Under such circumstances the system of rice intensification (SRI) method was suitable and followed by the farmers. System of rice intensification is a method for increasing the productivity of rice cultivation while at the same time reducing inputs, including seeds and fertilizers, and water requirements. The present study was conducted in Ormanjhi block of Ranchi district, to study the socio-economic profile of paddy growers, perception and constraints confronted by paddy growers under SRI method of paddy cultivation. Study revealed that the major constraints in SRI production were lack of awareness, scarcity of skilled labour, nursery management, and drudgery in cono-weeder uses. The major perception regarding SRI method of paddy cultivation were low demand of water, higher yield, remuneration from government, low seed requirement, low costs of input uses.

NGHIÊN CỨU ẢNH HƯỞNG CỦA PHÂN HỮU CƠ BOKASHI THAN ĐẾN SINH TRƯỞNG PHÁT TRIỂN VÀ NĂNG SUẤT GIỐNG LÚA H1 TRONG VỤ ĐÔNG XUÂN TẠI THỪA THIÊN HUẾ

2014 ◽  
Vol 91 (3) ◽  
Author(s):  
Trần Minh Quang
Keyword(s):  
System Of Rice Intensification ◽  
Rice Intensification

Mục đích chính của nghiên cứu này là xác định được lượng phân bón Bokashi than thích hợp nhất đối với giống lúa H1 theo phương thức thâm canh lúa cải tiến SRI (System of Rice Intensification) góp phần đưa ra quy trình thâm canh giống lúa H1 ở Thừa Thiên Huế. Kết quả nghiên cứu cho thấy trong điều kiện vụ Đông Xuân ở Thừa Thiên Huế giống lúa H1 sinh trưởng phát triển tốt, mang lại hiệu quả cao nhất khi sử dụng mức 5 tấn phân hữu cơ Bokashi than/ha. Khi bón ở mức này đã tăng khả năng cải thiện tính chất đất ở cả 3 mặt: lý tính, hóa tính và sinh tính.

INFLUENCE OF THE SYSTEM OF RICE INTENSIFICATION ON RICE YIELD AND NITROGEN AND WATER USE EFFICIENCY WITH DIFFERENT N APPLICATION RATES

2009 ◽  
Vol 45 (3) ◽  
pp. 275-286 ◽  
Author(s):  
LIMEI ZHAO ◽  
LIANGHUAN WU ◽  
YONGSHAN LI ◽  
XINGHUA LU ◽  
DEFENG ZHU ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
N Use Efficiency ◽  
System Of Rice Intensification ◽  
N Application ◽  
Application Rates ◽  
Rice Intensification ◽  
Use Efficiency ◽  
N Rates ◽  
N Use

SUMMARYField experiments were conducted in 2005 and 2006 to investigate the impacts of alternative rice cultivation systems on grain yield, water productivity, N uptake and N use efficiency (ANUE, agronomic N use efficiency; PFP, partial factor productivity of applied N). The trials compared the practices used with the system of rice intensification (SRI) and traditional flooding (TF). The effects of different N application rates (0, 80, 160 and 240 kg ha−1) and of N rates interacting with the cultivation system were also evaluated. Resulting grain yields with SRI ranged from 5.6 to 7.3 t ha−1, and from 4.1 to 6.4 t ha−1 under TF management. On average, grain yields under SRI were 21% higher in 2005 and 22% higher in 2006 than with TF. Compared with TF, SRI plots had higher harvest index across four fertilizer N rates in both years. However, there was no significance difference in above-ground biomass between two cultivation systems in either year. ANUE was increased significantly under SRI at 80 kg N ha−1 compared with TF, while at higher N application rates, ANUE with SRI was significantly lower than TF. Compared with TF, PFP under SRI was higher across all four N rates in both years, although the difference at 240 kg N ha−1 was not significant. As N rate increased, the ANUE and PFP under both SRI and TF significantly decreased. Reduction in irrigation water use with SRI was 40% in 2005 and 47% in 2006, and water use efficiency, both total and from irrigation, were significantly increased compared to TF. With both SRI and TF, the highest N application was associated with decreases in grain yield, N use efficiency and water use efficiency. This is an important finding given current debates whether N application rates in China are above the optimum, especially considering consequences for soil and water resources. Cultivation system, N rates and their interactions all produced significant differences in this study. Results confirmed that optimizing fertilizer N application rates under SRI is important to increase yield, N use efficiency and water use efficiency.

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