पौधों में फॉस्फोरस के संबंध में निम्नलिखित कथनों पर विचार कीजिए... | Agrigyan

सभी विषय सामान्य कृषि, पादप जैविकी, फसल सुरक्षा एवं सांख्यिकी सस्य विज्ञान के सिद्धांत, फसल पारिस्थितिकी, कृषि भूगोल एवं कृषि मौसम विज्ञान प्रमुख क्षेत्रीय फसलों का सस्य विज्ञान खरपतवार प्रबंधन एवं नियंत्रण जल प्रबंधन, सिंचाई एवं जल निकास मृदा उर्वरता, पोषक तत्व एवं उर्वरक उपयोग शुष्क भूमि सस्य विज्ञान एवं जलसंभर प्रबंधन समस्याग्रस्त मृदाएं, सुधार एवं फसल उत्पादन टिकाऊ भूमि उपयोग प्रणालियां एवं संरक्षण कृषि
106
ICAR AIEEA PG 2024 - Agronomy
MCQ (Single Correct)
English हिन्दी
'Pusa Kiran' is a variety of :
'पूसा किरण' (Pusa Kiran) किसकी किस्म है?
107
ICAR AIEEA PG 2024 - Agronomy
MCQ (Single Correct)
English हिन्दी
'Priya' is a variety of which maize group ?
'प्रिया' (Priya) मक्का के किस समूह की किस्म है?
108
ICAR AIEEA PG 2024 - Agronomy
MCQ (Single Correct)
English हिन्दी
Flour corn is also known as :
आटा मक्का (Flour corn) को किस अन्य वानस्पतिक नाम से भी जाना जाता है?
109
ICAR AIEEA PG 2024 - Agronomy
MCQ (Single Correct)
English हिन्दी
Sulphur deficiency first occurs in :
सल्फर (गंधक) की कमी के लक्षण सबसे पहले कहाँ दिखाई देते हैं?
110
ICAR AIEEA PG 2024 - Agronomy
Statement Based
English हिन्दी

Consider the following statements regarding phosphorus in plants :

(A) In normal P-sufficient plants, P-content varies from 0.1% to 0.4% by weight which is 1/5th to 1/10th of N or K content.
(B) Phosphorus containing ATP is called the "Energy currency of the plants".
(C) Plant roots absorb P in the $\text{H}_2\text{PO}_4^-$ form, but under neutral to alkaline environments, $\text{HPO}_4^{2-}$ and/or $\text{PO}_4^{3-}$ ions could also be taken up.
(D) Phosphorus is a structural component of the nucleic acids (DNA and RNA), and also a constituent of fatty phospholipids.

Choose the correct answer from the options given below :

पौधों में फॉस्फोरस के संबंध में निम्नलिखित कथनों पर विचार कीजिए :

(A) सामान्य P-पर्याप्त पौधों में, शुष्क भार के आधार पर P-मात्रा 0.1% से 0.4% तक होती है जो N या K मात्रा का 1/5वां से 1/10वां हिस्सा है।
(B) फॉस्फोरस युक्त ATP को "पौधों की ऊर्जा मुद्रा (Energy currency)" कहा जाता है।
(C) पौधों की जड़ें मुख्य रूप से $\text{H}_2\text{PO}_4^-$ रूप में P अवशोषित करती हैं, किंतु उदासीन से क्षारीय वातावरण में $\text{HPO}_4^{2-}$ आयन भी अवशोषित हो सकते हैं।
(D) फॉस्फोरस न्यूक्लिक एसिड (DNA और RNA) का संरचनात्मक घटक है, और फॉस्फोलिपिड्स का भी एक घटक है।

नीचे दिए गए विकल्पों में से सही उत्तर चुनें :

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 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
Soil-Plant-Water Relations: Soil Moisture Constants, Soil Water Potential, Moisture Retention Curves and Hysteresis Crop Water Requirements, Water Use Efficiency (WUE), Consumptive Use and Irrigation Water Quality (SAR, RSC) Irrigation Methods: Surface (Check Basin, Furrow, Border), Pressurized (Drip, Sprinkler) and Fertigation Irrigation Scheduling Criteria: Soil Moisture Depletion, IW/CPE Ratio, Critical Growth Stages and Tensiometers Agricultural Drainage: Surface and Sub-surface Drainage Systems, Waterlogging Remediation and Salt Leaching

मृदा उर्वरता, पोषक तत्व एवं उर्वरक उपयोग

7 टॉपिक्स
Nutrient Dynamics in Soils: Nitrogen Transformation, Mineralization, Immobilization, Nitrification, Denitrification Secondary and Micronutrients in Soils: Calcium, Magnesium, Sulfur, Zinc, Iron, Manganese, Copper, Boron Essential Plant Nutrients: Classification, Criteria of Essentiality, Roles and Deficiency/Toxicity Symptoms Straight, Complex, Mixed, Slow-Release and Specialty Fertilizers: Chemical Properties, Salt Index and Reactions Integrated Nutrient Management (INM), Site-Specific Nutrient Management (SSNM), Soil Testing and Biofertilizers Phosphorus and Potassium Dynamics: Fixation, Adsorption-Desorption, Quantity-Intensity (Q/I) Relationships सक्रिय Nitrification Inhibitors (N-Serve, DCD, Neem-Coated Urea) and Nitrogen Use Efficiency (NUE) Enhancement

शुष्क भूमि सस्य विज्ञान एवं जलसंभर प्रबंधन

3 टॉपिक्स
Crop Adaptation to Drought, Anti-transpirants (Stomatal, Reflecting, Film-forming) and Mulching Techniques Rainwater Harvesting, In-situ Moisture Conservation, Contingency Crop Planning and Watershed Management Dryland vs Rainfed Farming: Characteristics, Classification, Moisture Stress and Drought Types

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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