Techniques For Field Experiments With Rice
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Techniques For Field Experiments With Rice
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Author : K. A. Gomez
language : en
Publisher: Int. Rice Res. Inst.
Release Date : 1972
Techniques For Field Experiments With Rice written by K. A. Gomez and has been published by Int. Rice Res. Inst. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.
Techniques For Field Experiments With Rice
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Author : Kwanchai A. Gomez
language : en
Publisher:
Release Date : 1972
Techniques For Field Experiments With Rice written by Kwanchai A. Gomez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Field experiments categories.
Observations On The Technique Required In Field Experiments With Rice
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Author : Henry Walter Jack
language : en
Publisher:
Release Date : 1921
Observations On The Technique Required In Field Experiments With Rice written by Henry Walter Jack and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1921 with Rice categories.
A Handbook On The Methodology For An Integrated Experiment
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Author :
language : en
Publisher: Int. Rice Res. Inst.
Release Date : 1978
A Handbook On The Methodology For An Integrated Experiment written by and has been published by Int. Rice Res. Inst. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Crop yields categories.
Experiments In Rice Culture At The Biggs Rice Field Station In California
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Author : Jenkin William Jones
language : en
Publisher:
Release Date : 1926
Experiments In Rice Culture At The Biggs Rice Field Station In California written by Jenkin William Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1926 with Agriculture categories.
The System Of Rice Intensification And Conventional Rice Farming
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Author : Tejendra Chapagain
language : en
Publisher:
Release Date : 2017
The System Of Rice Intensification And Conventional Rice Farming written by Tejendra Chapagain and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Agricultural intensification categories.
The System of Rice Intensification (SRI) involves the adoption of certain changes in management practices for rice cultivation that create a better growing environment for rice crops. The use of intermittent irrigation with alternate wet and dry intervals (AWD) and single transplanting of the younger seedlings in wider spacing areas are regarded as the key factors in SRI for better crop growth and productivity. Field experiments were conducted in Chiba, Japan during the two consecutive rice growing seasons (May-September) of 2008-09 to observe the effects of SRI components on rice crop performance, field environment, water savings, and water-wise rice production. The effects of the irrigation method, age of seedlings and spacing were evaluated in the 2008 rice season with eight treatment combinations in a split-split plot design (S-SPD). AWDI at 10 day intervals and continuous flooding throughout the cropping season were the two main plot factors while the effects of seedling age (14 and 21 days) and plant spacing (30x30 cm2 and 30x18 cm2) were evaluated as sub and sub-sub plot factors, respectively. The experimental results revealed that the SRI management with the proposed AWDI can save a significant amount of irrigation water (29%) without reduced grain yield (7.41t/h compared with 7.37t/ha from normal planting with ordinary water management). Water productivity was also observed to be significantly higher in all combinations of practices in AWDI plots: 1.74 g/liter with SRI management and AWDI as compared to 1.23 g/liter in normal planting with ordinary water management. In addition, the research outcomes showed a role of AWDI in minimizing pest and disease incidence, shortening the rice crop cycle and also improving the plant stand until harvest. Synergistic effects of younger seedlings and wider spacing were seen in tillering ability, panicle length and a number of filled grains that ultimately led to higher productivity with better grain quality. Field experiments with the complete sets of SRI practices were carried out in Randomized Complete Block Design (RCBD) during the 2009 rice growing season in the same field. SRI (with 8 day old seedlings) and conventional (with 22 day old seedlings) practices were the first factor (cultivation method), while organic and inorganic managements were evaluated as the second factor (management method) in the field experiments. The highest yield was observed through the conventional method with inorganic management (6.84t/h) that was on par with the organic SRI (6.59t/h) followed by organic conventional (6.48t/h). It was recorded as 5.92t/h in inorganic SRI management. Overall, the effects of SRI components were positive and significant on a per plant basis; however, they did not differ significantly in terms of grain yield per unit area. The development of healthy and vigorous roots, increased stem diameter, greater productive leaf area, longer panicles, greater number of filled grains, development of plants tolerant to insect-pest and disease, and reduced plant lodging percentage were some notable achievements with SRI management. Water savings and water-wise rice production are other important issues that are likely to draw the attention of rice researchers and farm communities to adopt SRI under scarce water conditions. However, comparatively better grain yields with conventional management methods underscore a need for further investigations in defining an appropriate combination of practices for SRI management, considering local soil properties, prevailing climate and critical watering stages in rice crop management.
Statistical Procedures For Agricultural Research
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Author : Kwanchai A. Gomez
language : en
Publisher: John Wiley & Sons
Release Date : 1984-02-17
Statistical Procedures For Agricultural Research written by Kwanchai A. Gomez and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984-02-17 with Technology & Engineering categories.
Here in one easy-to-understand volume are the statistical procedures and techniques the agricultural researcher needs to know in order to design, implement, analyze, and interpret the results of most experiments with crops. Designed specifically for the non-statistician, this valuable guide focuses on the practical problems of the field researcher. Throughout, it emphasizes the use of statistics as a tool of research—one that will help pinpoint research problems and select remedial measures. Whenever possible, mathematical formulations and statistical jargon are avoided. Originally published by the International Rice Research Institute, this widely respected guide has been totally updated and much expanded in this Second Edition. It now features new chapters on the analysis of multi-observation data and experiments conducted over time and space. Also included is a chapter on experiments in farmers' fields, a subject of major concern in developing countries where agricultural research is commonly conducted outside experiment stations. Statistical Procedures for Agricultural Research, Second Edition will prove equally useful to students and professional researchers in all agricultural and biological disciplines. A wealth of examples of actual experiments help readers to choose the statistical method best suited for their needs, and enable even the most complicated procedures to be easily understood and directly applied. An International Rice Research Institute Book
Breeding Field Crops
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Author : John M. Poehlman
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-17
Breeding Field Crops written by John M. Poehlman and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Science categories.
While preparing the first edition of this textbook I attended an extension short course on writing agricultural publications. The message I remember was "select your audience and write to it. " There has never been any doubt about the audience for which this textbook was written, the introductory course in crop breeding. In addition, it has become a widely used reference for the graduate plant-breeding student and the practicing plant breeder. In its prepa ration, particular attention has been given to advances in plant-breeding theo ry and their utility in plant-breeding practice. The blend of the theoretical with the practical has set this book apart from other plant-breeding textbooks. The basic structure and the objectives of the earlier editions remain un changed. These objectives are (1) to review essential features of plant re production, Mendelian genetic principles, and related genetic developments applicable in plant-breeding practice; (2) to describe and evaluate established and new plant-breeding procedures and techniques, and (3) to discuss plant breeding objectives with emphasis on the importance of proper choice of objec tive for achieving success in variety development. Because plant-breeding activities are normally organized around specific crops, there are chapters describing breeding procedures and objectives for the major crop plants; the crops were chosen for their economic importance or diversity in breeding sys tems. These chapters provide a broad overview of the kinds of problems with which the breeder must cope.
Rice Fish Research And Development In Asia
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Author : Catalino R. Dela Cruz
language : en
Publisher: WorldFish
Release Date : 1992-01-01
Rice Fish Research And Development In Asia written by Catalino R. Dela Cruz and has been published by WorldFish this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-01-01 with Agricultural systems categories.
Publications Of The International Agricultural Research And Development Centers
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Author :
language : en
Publisher: IRRI
Release Date : 1989
Publications Of The International Agricultural Research And Development Centers written by and has been published by IRRI this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Agriculture categories.