Q.51
ICAR AIEEA PG Agronomy 09 July 2023 (Shift 1) Paper
MCQ (Single Correct)
English हिन्दी
Hybrid rice for commercial production was first evolved in :
व्यावसायिक उत्पादन के लिए संकर धान (Hybrid rice) का विकास सर्वप्रथम किस देश में हुआ था?
EXPLANATION Agronomy of Cereal Crops I - Rice: Ecology, Nursery, SRI, Direct Seeded Rice (DSR), Water & Nutrient Management
  • Hybrid rice for large-scale commercial farming was first successfully developed in China in 1974 by eminent agricultural scientist Prof. Yuan Longping ('Father of Hybrid Rice').
  • Yuan Longping utilized the cytoplasmic male sterility source Wild Abortive (WA) cytosterile line discovered in wild rice (Oryza sativa f. spontanea) in Hainan Island.
  • Commercial cultivation commenced in China in 1976. India was the second country in the world to commercialize hybrid rice in 1994 (with varieties APRH-1, APRH-2, MGR-1, KRH-1).
  • Thus, China (Option 2) is the correct answer.
  • व्यावसायिक स्तर पर संकर धान की खेती का विकास सर्वप्रथम चीन में 1974 में प्रो. युआन लोंगपिंग (जिन्हें 'संकर धान का जनक' कहा जाता है) द्वारा किया गया था।
  • उन्होंने 1970 में हैनान द्वीप पर खोजे गए नर बांझपन स्रोत 'वाइल्ड एबोर्तिव' (WA) का उपयोग करके त्रि-पंक्ति संकर धान प्रणाली विकसित की।
  • भारत 1994 में संकर धान जारी करने वाला विश्व का दूसरा देश बना।
  • अतः सही उत्तर चीन (विकल्प 2) है।
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Agronomy विषय एवं अध्याय

विषय एवं पाठ्यक्रम के अनुसार सभी अध्याय देखें

सामान्य कृषि, पादप जैविकी, फसल सुरक्षा एवं सांख्यिकी

6 टॉपिक्स
Plant Physiology, Photosynthesis, Transpiration and Abiotic Stresses in Crops Historical Milestones, Agricultural Education, ICAR Institutes and Research Infrastructure Genetics, Cytogenetics, Plant Breeding Methods and Varietal Improvement Crop Protection: Major Diseases, Insect Pests and Integrated Plant Health Management Agricultural Statistics, Probability Distributions and Experimental Field Designs (CRD, RBD, SPD) Agricultural Extension, Rural Development Programs and Technology Transfer (KVK, ATMA)

सस्य विज्ञान के सिद्धांत, फसल पारिस्थितिकी, कृषि भूगोल एवं कृषि मौसम विज्ञान

8 टॉपिक्स
Atmospheric Humidity, Precipitation, Monsoon Dynamics, Weather Forecasting and Agro-Climatic Zones Principles of Agronomy: Definition, Scope, History, Tillage, Tilth and Seedbed Preparation Agricultural Meteorology: Solar Radiation, Photosynthetically Active Radiation (PAR) and Albedo Climate Change, Greenhouse Gases, Global Warming and Impact on Crop Phenology Cropping Systems: Monocropping, Intercropping, Mixed, Sequential, Relay and Competition Indices (LER, ATER) Crop Growth Analysis, Growth Indices (LAI, CGR, RGR, NAR, LAR, SLA) and Yield Attributes Temperature, Growing Degree Days (GDD), Photoperiodism, Thermoperiodism and Heat Units Planting Geometry, Plant Density, Sowing Methods and Crop Stand Establishment

प्रमुख क्षेत्रीय फसलों का सस्य विज्ञान

9 टॉपिक्स
Agronomy of Cereal Crops I - Rice: Ecology, Nursery, SRI, Direct Seeded Rice (DSR), Water & Nutrient Management सक्रिय Agronomy of Coarse Cereals and Millets: Maize, Sorghum, Pearl Millet, Finger Millet and Small Millets Agronomy of Major Pulse Crops: Chickpea, Pigeonpea, Mungbean, Urdbean, Lentil and Field Pea Agronomy of Cereal Crops II - Wheat and Barley: Sowing Depth, CRI Stage, Tillage, Nutrient & Irrigation Agronomy of Commercial & Fiber Crops: Cotton, Jute, Sunnhemp and Mesta Agronomy of Plantation, Spice, Medicinal and Aromatic Crops: Tea, Coffee, Turmeric, Ginger and Mentha Agronomy of Fodder, Forage and Pasture Grasses: Berseem, Lucerne, Oat, Sorghum, Napier and Guinea Grass Agronomy of Major Oilseed Crops II: Soybean, Sunflower, Safflower, Linseed, Niger and Castor Agronomy of Sugar Crops: Sugarcane, Sugarbeet, Planting Systems (Trench, IISR, STP) and Ratoon Management

खरपतवार प्रबंधन एवं नियंत्रण

9 टॉपिक्स
Weed Biology, Classification, Propagation, Dormancy, Dissemination and Crop-Weed Competition Chemical Control: Classification of Herbicides (Selectivity, Application Timing, Chemical Families) Herbicide Formulations, Surfactants, Adjuvants, Safeners and Application Equipment Critical Period of Crop-Weed Competition (CPWC) and Allelopathy in Agro-Ecosystems Herbicide Persistence, Soil Residual Fate, Leaching, Volatilization, Photodecomposition and Selectivity Mechanisms Integrated Weed Management (IWM): Cultural, Physical, Mechanical, Biological (Bioherbicides) and Chemical Controls Herbicide Resistance in Weeds, Cross & Multiple Resistance Mechanisms and Herbicide Tolerant Crops Parasitic Weeds (Striga, Orobanche, Cuscuta, Loranthus) and Aquatic/Invasive Weeds (Eichhornia, Parthenium) Herbicide Mode of Action: ALS, ACCase, Photosystem I & II, EPSPS, Synthetic Auxins, Glutamine Synthetase

जल प्रबंधन, सिंचाई एवं जल निकास

5 टॉपिक्स
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मृदा उर्वरता, पोषक तत्व एवं उर्वरक उपयोग

7 टॉपिक्स
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शुष्क भूमि सस्य विज्ञान एवं जलसंभर प्रबंधन

3 टॉपिक्स
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समस्याग्रस्त मृदाएं, सुधार एवं फसल उत्पादन

2 टॉपिक्स
Salt-Affected Soils: Saline, Sodic, Saline-Sodic Soils, Diagnostics (ECe, ESP, SAR, pH) and Chemical Reclamation Acid, Acid-Sulfate, Calcareous and Degraded Problem Soils: Liming, Amelioration and Crop Adaptation

टिकाऊ भूमि उपयोग प्रणालियां एवं संरक्षण कृषि

3 टॉपिक्स
Agroforestry Systems, Farming Systems Research (FSR), Integrated Farming Systems (IFS) and Wasteland Management Conservation Agriculture: Principles, Minimum Tillage, Zero Tillage, Bed Planting and Crop Residue Retention Organic Farming, Natural Farming (ZBNF), Certification Standards and Organic Inputs Preparation
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