Rainfed rice - IRRI books - International Rice Research Institute

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Fertilisers and biofertilisers Various biofertilisers such as blue- green algae (BGA), azolla, etc., are capable of fixing atmospheric N, which is used by the rice crop. About 20 to 25 kg of N could be available through biofertilisers. Vascular-arbuscular mycorrhizae can be used to increase the availability of soil-fixed phosphorus. The rest of the nutrients are applied through fertilisers. Fertilisers and agricultural/ industrial wastes A large quantity of agricultural and industrial wastes are available to supplement nutrients to rice. Pressmud available from sugar factories contains 0.5-0.9% N, 1.2- 2.0% P 2 O 5 , 1.5-2.0% K 2 O and S, Ca, etc. Slow-release N fertilisers Slow-release N fertilisers are modified nitrogen carriers. When applied, they release nitrogen at a comparatively low rate and reduce leaching losses. Comparative Analysis of Different Nutrient Management Practices in Rainfed Rice 191
Comparative analysis of different practices of nutrient management in rainfed rice Slow-release N fertiliser Industrial waste Biofertilisers Legumes in rotation Other organic materials Crop residues Green manure Farmyard manure Fertilisers Particulars Very limited Available at limited locations Limited manufacture of biofertilisers and very poor quality Restricted cultivation due to poor productivity and risk in cultivation Available at specific locations Very limited Difficulty in raising GM crop Very limited Easy Availability Very rich in nutrient Low nutrient content Fixes low quantity of N only Very rich Low nutrient content and slow release Nutrient content Limited Large scale Large scale Limited Wide Wide Restricted Very wide Very wide Adaptability to lowland Easy Difficult Easy – – Difficult – Difficult Easy Transportation Very difficult Easy Requires better technical know-how N. A. Soil incorporation difficult Soil incorporation difficult Difficult Easy N easy; P and K placement difficult Field application Very costly Cheap Cheap Cheap No cost No cost Very costly Very costly Costly Cost Very good Good Very good Good Good Fair Very good Very good Good Effect on yield Favourable effect Favourable; K improves luster and disease resistance Effect on grain quality
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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
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Improving the Yields of Traditional
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Threats to the erosion of tradition
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Farmers’ Participatory Plant Bree
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Farmers' Participatory Plant Breedi
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Farmers’ Participatory Plant Bree
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Identification of Donors for Rice B
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Rainfed lowlands Varietal needs for
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Identification of Donors for Rice B
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Varietal Development: Evaluation an
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Varietal Development: Evaluation an
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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 179 and 180: Dealing with Decline in Soil Fertil
Page 189 and 190: Integrated Nutrient Management What
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Page 197 and 198: Comparative Analysis of Different N
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Page 203: Comparative analysis of different m
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Page 227 and 228: Water Saving, Recycling and Sequent
Page 232: Weed Management
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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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286 RAINFED RICE A SOURCEBOOK OF BE
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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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