Rainfed rice - IRRI books - International Rice Research Institute

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Soil Limitation and possible solutions under different rainfed <strong>rice</strong> ecosystem LOWLAND DEEPWATER/TIDAL WETLANDS Waterlogged UPLAND Drought-prone Drought-prone Favourable Drought/submergence-prone Waterlogging/flood High salinity N, P, K, Ca, Mg deficiency Fe toxicity Poor drainage Flooding/drought at early stage of crop Secondary salinisation N, P, ZN deficiency Fe toxicity N, P, ZN difficiency High calcium carbonate Waterstress surface stones coarse fragments on surface N, P, ZN, Fe, B deficiency High calcium carbonate Soil erosion Water stress Soil acidity/alkalinity Low organic carbon N, P, S, Ca, Mg deficiency Limitations Bunding Varieties tolerant to salinity and waterlogging Addition of required fertilzer by correct method Varieties tolerant to Fe toxicity Surface drainage Bunding Addition of required fertilizer by coorect method and suitable nutrient management practices Varieties tolerant to iron toxicity Addition od required fertilizer and amendments by correct method Suitable soil moisture conservation measure Drought-resistant varieties Innovativemethod of puddling and transplanting Addition of required fertilizes/amendments by correct method Nutrient loss Al toxicity Suitable soil and water conservation measures Drought-resistant varieties Use of chemical amendmens Additionof organic matter Addition of required amount of fertilizer by correct method Solution Symbols: N-Nitrogen; P-Phosphorus; K-Potassium; Ca-Calcium; Mg-Magnesium; S-Sulfur; Fe-Iron; Zn-Zinc; B-Boron; Al-Aluminum
Dealing with Decline in Soil Fertility and Land Productivity S oil is the storehouse of all plant nutrients. Roots absorb nutrients from the soil for plant growth and nourishment. A fertile soil supports healthy crop growth and produces good yield and good-quality grains by supplying major nutrients and micronutrients in a balanced proportion to the crop. Decline in soil fertility seriously hampers crop growth and reduces yield drastically. It makes plants more susceptible to diseases and pest attack and also decreases the productivity of the land. Fertile soil Has adequate supply of plant nutrients. Has no soil problems. Has adequate rooting depth and water-holding capacity. Has high/normal organic matter content. Has medium to fine soil texture. Poor soil Has inadequate supply of plant nutrients. Has soil-related problems. Has shallow depth and poor waterholding capacity. Has low organic matter. Has coarse texture. 170 Soil is a natural resource. If sustained, it can eradicate hunger from the world. Therefore, all efforts should be made to keep it productive and sustainable.
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The International Rice Research Ins
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RAINFED RICE A SOURCEBOOK OF BEST P
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vi Foreword About 45% of the world
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RAINFED RICE A SOURCE BOOK OF BEST
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Utilisation and Management of Natur
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Rice Biodiversity and Genetic Wealt
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32 RAINFED RICE A SOURCEBOOK OF BES
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Socio-Economic Constraints in Rice
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Developing Sustainable Technologies
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Agro-Ecosystem Analysis for Rainfed
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Agro-Ecosystem Analysis for Rainfed
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Agro-ecosystem analysis Agro-ecosys
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GIS in extrapolation of location-sp
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Rice-growing sub-ecosystems in Sult
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Influence of Agro-Ecosystem Compone
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Principles for Improving and Stabil
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Water management Adopt efficient wa
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Major Cropping Systems and Their Ma
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Major Cropping Systems and Their Ma
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etter in the broadcast and row-seed
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Comparative Analysis of Different C
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Comparative Analysis of Different C
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Flood-prone areas Flood-prone areas
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Boro Rice Cultivation B oro rice cu
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Integration of Boro with DWR When t
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Management of Rice in Flood-Prone A
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Transplant 35-45-day-old seedlings
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Delayed transplanting Seedbed prepa
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Preparing a site Field dikes 1. Pre
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5. Put the feed in hanging trays in
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Crop Establishment Practices in Rai
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11. For medium-duration varieties,
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Crop Establishment Practices in Rai
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Comparative Analysis of Direct Sowi
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Machine transplanting Manual and se
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Direct sowing vs transplanting: a c
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The beushening process Beushening S
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Less cash inputs required Besides n
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Tillage Practices and Implements fo
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Tillage implements Function Bullock
Page 130 and 131: Improving the Yields of Traditional
Page 132 and 133: Threats to the erosion of tradition
Page 134 and 135: Farmers’ Participatory Plant Bree
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Page 140 and 141: Identification of Donors for Rice B
Page 142 and 143: Rainfed lowlands Varietal needs for
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Page 146 and 147: Varietal Development: Evaluation an
Page 152 and 153: Trends in varietal improvement In t
Page 154: Some small increases can also be ac
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Page 163 and 164: Rainfed Rice Seed Production System
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Page 169 and 170: Influence of High-Quality Seeds on
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Page 189 and 190: Integrated Nutrient Management What
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Page 197 and 198: Comparative Analysis of Different N
Page 201 and 202: Comparative analysis of different p
Page 203: Comparative analysis of different m
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Page 217 and 218: Indigenous Rainwater Management R a
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Page 227 and 228: Water Saving, Recycling and Sequent
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220 RAINFED RICE A SOURCEBOOK OF BE
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Weed Management
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Cost Effectiveness of Weed Manageme
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Pest Control Alternatives for the R
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Diseases affecting grains Blast Bro
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Pest control in rainfed upland rice
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Pest Control Alternatives for the R
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Gall midge Summer ploughing. Timely
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Disease Management Strategies I n n
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Sheath blight (caused by Rhizoctoni
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Disease Management Strategies Contr
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To know the intensity of the rat po
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Rat Population Dynamics and Managem
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Insecticide Use, Precautions and In
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Insecticide Use, Precautions and in
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First-aid precautions Insecticide U
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hepatic carcinoma; acute liver dama
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Effects of Pesticides on Humans and
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Mechanical practices on IPM Hand-pi
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Participatory Farming Systems Techn
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Annexes
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290 Production staff Editors Nilam
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Rainfed rice - IRRI books - International Rice Research Institute

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