Principles and Practices of Rice Production PDF Download

Author: Surajit K. De Datta
Publisher: Int. Rice Res. Inst.
ISBN: 0471097608
Category : Rice
Languages : en
Pages : 642

View

Book Description

Author:
Publisher: Int. Rice Res. Inst.
ISBN: 9711041049
Category : Agricultural wastes
Languages : en
Pages : 642

View

Book Description

Author: Istvan Szabolcs
Publisher: Springer
ISBN:
Category : Nature
Languages : en
Pages : 296

View

Book Description

Author: M. D. Pathak
Publisher: Int. Rice Res. Inst.
ISBN: 8122402542
Category : Rice
Languages : en
Pages : 276

View

Book Description
Suggestions for improving rice production in Uttar Pradesh.

Author: Norman Uphoff
Publisher:
ISBN: 9780692644904
Category :
Languages : en
Pages :

View

Book Description
This publication reports on current work in progress to raise the agricultural productivity of a wide range of crops, in eco-friendly ways and in a number of countries around the world, using an agroecological methodology called the System of Crop Intensification (SCI). Through a shift in plant management, SCI allows farmers to increase their production while simultaneously reducing purchased inputs, building soil health, reducing water use, and making plants more resilient to climate change-induced stress.

Author:
Publisher: Int. Rice Res. Inst.
ISBN: 9711041219
Category : Rice
Languages : en
Pages : 574

View

Book Description

Author: International Rice Research Institute
Publisher: Int. Rice Res. Inst.
ISBN: 9711040786
Category : Crop yields
Languages : en
Pages : 422

View

Book Description

Author: T. R. Paris
Publisher: IRRI
ISBN: 9712202623
Category : Agricultural development projects
Languages : en
Pages : 120

View

Book Description
The Green Revolution averted the threat of famine through the rapid adoption of improved rice varieties. However, despite this huge success, hundreds of millions of poor rice-farming families in rainfed areas still live in poverty and suffer from food (rice) insecurity. Despite many released improved rice varieties for rainfed conditions, farmers still use local varieties that can withstand drought and floods but have low yields or they use the same varieties for many years because of a lack of better varieties. Rainfed rice farmers are slow to adopt improved varieties because of several problems. One problem is more of extension than breeding - many farmers, particularly those living in remote rainfed areas, may not have access to or information about the seed of new varieties. Another problem is that variety testing programs are often conducted on-station, which does not represent farmers' fields. Moreover, conventional rice breeding programs usually seek farmers' input only at the very end of the process, when newly released varieties, usually one or two per year, are evaluated in on-farm demonstration trials. Often, in remote and unfavorable areas, subsistence farmers, who comprise the majority of the rural farming population in Asia, give importance to social and cultural dimensions aside from the agronomic performance of the new rice varieties. The complexities of developing acceptable varieties for variable and stressful rainfed environments require that breeders become deeply familiar with men and women farmers' needs and preferences. Since 1977, IRRI has been making efforts to improve communication among farmers, breeders, and extension workers so that men and women farmers' concerns and preferences are considered in plant breeding objectives. Participatory varietal selection (PVS) is a simple way for breeders and agronomists to learn which varieties perform well on-station and on-farm and to obtain feedback from the potential end users in the early phases of the breeding cycle. It is a means for social scientists to identify the varieties that most men and women farmers prefer, including the reasons for their preference and constraints to adoption. Based on IRRI's experience in collaboration with national agricultural research and extension system partners and farmers, PVS, which includes "researcher-managed" and "farmer-managed" trials, is an effective strategy for accelerating the dissemination of stress-tolerant varieties. PVS has also been instrumental in the fast release of stress-tolerant varieties through the formal varietal release system. This guide on PVS will complement the various training programs given by IRRI for plant breeders, agronomists, and extension workers engaged in rice varietal development and dissemination.

Author: B. A. M. Bouman
Publisher: Int. Rice Res. Inst.
ISBN: 9712202194
Category : Rice
Languages : en
Pages : 59

View

Book Description

Author: Norman Uphoff
Publisher: Createspace Independent Publishing Platform
ISBN: 9781515022053
Category :
Languages : en
Pages : 222

View

Book Description
The System of Rice Intensification, known as SRI, is a management strategy for crop improvement. Its ideas, insights and practices are based on scientifically validated knowledge for increasing the production of not only irrigated rice but of other crops as well. SRI represents a paradigm shift in agricultural thinking and practice toward agroecological farming that can be used by even the poorest smallholding farmers in ecologically fragile regions of the world to achieve food security in the face of the climate-change challenges ahead. When the author Norman Uphoff first learned about SRI in Madagascar in 1993, this production system which offered higher yields with reduced inputs seemed implausible to him. But the professor put aside his skepticism after seeing farmers who had been getting rice yields of just two tons per hectare produce four times more rice-for three years in a row-on their very poor soils, not changing their varieties or relying on agrochemical inputs, and using less water. Now, he's helping to disseminate this dramatically effective methodology with this accessible, easy-to-use sourcebook. It offers explanations, research references, vivid pictures, and concrete examples of the award-winning SRI methodology to anyone interested in the development of practicable sustainable food systems. Now, he's helping to disseminate this revolutionary methodology with this accessible, easy-to-use primer. It offers explanations, resources, and concrete examples of the award-winning SRI to anyone interested in the development of practicable sustainable food systems.