factors affecting crop water requirement ppt

Influence of Crop Characteristics 3. The soil factors that affect crop growth are 1. The following points highlight the four main factors that influence the water requirement of crops. . Crop type 36 4.2.2. Influence of Climate 2. This is done by .

This determines the quantity of water to be added by irrigation and rainfall and helps in day to day management of irrigation systems. FACTORS AFFECTING CROP EVAPOTRANSPIRATION 3.1 Climate: variation with time, distance, size of irrigation development, advection, altitude 3.2 Soil Water: level of .av.ailable soil water, groundwater, salinity, water and crop yields 3.3 Method of irrigation: surface, sprinkler, drip or trickle, sub-surface irrigation 3.4 Cultural Practices: fertilizers, plant population, tillage, mulching . Motor Unit Recruitment Factors. Genetic or Internal Factors 2. Soil reactions Soil moisture Water is a principal constituent of growing plant which it extracts from soil Water is essential for photosynthesis Determination of K c ini47 4.5.2. Enter the email address you signed up with and we'll email you a reset link. Nature of Soil 3. Length of growth stages 40 4.5. More details. Cultural practices 54 5. - A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 21c74b-ZDc1Z - A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 21c74b-ZDc1Z Climate-smart agriculture is the only way to lower the negative impact of climate variations on crop adaptation, before it might affect global crop production drastically. Climatic factors 53 4.8.2. Serves as anchor for its roots. 1.

In hot weather, the loss of water is more due to the increase of evaporation and also increase the transpiration through leaves, therefore, the water requirement will be more..

Economic Factors and Labour: Being dependent on climatic parameters, crop water use, or crop evapotranspiration (ETc), is best presented as a function of reference evapotranspiration (ETo). so the water requirement is less.. 3. Plant Growth and Development- PPT PDF Class 11/Plus 1/CBSE PART 1 PART 2. Irrigation method 54 4.8.4.

Factors affecting muscle force production. 682 Factors Affecting Seed Germination PPTs View free & download | PowerShow.com. To enhance fertilizer application- fertigation 8. Determination of K c midand K c end49 Irrigation manual iv - Module 4 4.6. Precipitation 2. Soil moisture 2. CROP WATER REQUIREMENT - POTENTIAL EVAPOTRANSPIRATION (PET) AND CONSUMPTIVE USE- FACTORS AFFECTING CROP WATER REQUIREMENT - CRITICAL STAGES - WATER REQUIREMENT OF DIFFERENT CROPS Crop water Requirement Crop water requirement is the water required by the plants for its survival, growth, development and to produce economic parts. Influence of Climate. 3) Climatic factors a) Temperature b) Sunshine hours c) Relative humidity d) Wind velocity e) Rainfall 4) Agronomic management . Module 1: Anatomy and Physiology. 4. Total water demand of crops is made up of: i) Crop water use: includes . 2.

The depth of water required every time , generally varies from 5 to 10 cm depending upon the type of the crop . Nature of Crops 2. To Leach Excess Salts 9. Solar radiation (without which life will . Provides water for its transpiration. factors affecting wind ppt. Soil temperature 4. Soil mineral matter 5. Motor Unit Recruitment. Dissolves minerals for its nutrition. The following are the factors which affect on the water requirements of the crops, i. Soil air 3. 7. 2.2 CROP WATER AND NET IRRIGATION REQUIREMENTS In irrigation, it is essential to know the amount of water needed by crops. But in cold weather, the evaporation loss is very low . If this depth of water is required five times during the base period, then the total water required by the . Soil water factors 54 4.8.3. Importance of estimating irrigation requirements 57 5.3. 2. Hence the crop water requirement includes all losses like . The study shows that reference evapotranspiration (ET0) varies from 2.5 to 3.36 mm/day for the area under study. Functions of Irrigation Water Soil furnishes the following for the plant life: 1. The following features which mainly influence the crop water requirement are: 1) Crop factors a) Variety b) Growth stages c) Duration d) Plant population e) Crop growing season 2) Soil factors a) Structure b) Texture c) Depth d) Topography e) Soil chemical composition 4. Crop coefficients 44 4.5.1. This requirement is applied either naturally by precipitation or artificially by irrigation. Water requirement will be less if the water table is nearer to the ground surface. 4. Effect of Nature of Irrigation 5. The principal . Soil organisms 7. 7. . Water Table. spiritual or religious enrichment cultural heritage recreation and 3. Effect of Climatic Factors 4. The depletion of moisture from the cultivation fields is called crop ET, which helps in. Climatic Factors Affecting Farming. Nature of Crops: Different nature of crops needs different quantity of water. When rainfall . These factors are humidity and wind speed. Factors affecting water supply. Download PDF - Factors Affecting Crop Production.ppt [vnd5902vg9lx]. Sprinkler method and drip irrigation method are the best from the view point of water conservation. Soil organic matter 6. Attack of Pests and Diseases. Key Terms: Environmental Influences on . Climatic factors such as light, water and rainfall, temperature, air, relative humidity and wind also affect farming in various ways. 5. In windy climates, the crops will use more water than in calm climates. Words: 4,173; Pages: 79; Preview; Full text; FACTORS AFFECTING CROP PRODUCTION Crop production can be viewed from two perspectives: 1 - at the CROP level 2 - at the SYSTEMS level Crop production at the crop level: In the form of an equation: Y = f [G + E + (G x E)] where, Y = yield G = genotype E . There are, however, apart from sunshine and temperature, other climatic factors which influence the crop water need. For example, more quantity of water is . Factors Affecting Crop Production - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The factors are: 1. But if the ground is flat, the water flows gently and the soil gets enough time to absorb the required moisture. Dissolves minerals for its nutrition. Universal solvent for living systems. The requirements of crop water are normally expressed in mm/ day, mm/month, or mm/season [6]. Blog Keep up to date with the latest news. Provides Oxygen for its metabolism. Delta: Each crop requires a certain amount of water after a certain fixed interval of time, throughout its period of growth. Page 2 of 23. plant physiology 3(2-1) 15-02-2012. from germination to senescence!!. 6. Net irrigation requirements 57 5.3.1 . Some of the most important factors affecting the demand of water for crops are as follows: 1. Among these are soil factors, such as pH, available nutrients, texture, organic matter content and soil-water relationships; weather and climatic factors, including temperature, rainfall and light intensity; the crop and cultivar; postharvest handling and Water Optimum range often wider and flatter than for most physical factors . Classification of elements affecting crop production 1. The gross water requirement was 342.42 mm/year with an application efficiency of 70 . Shade cloth. Usually water requirement for crop is expressed in water depth per unit area. Crop growth stages 37 4.3. A certain crop grown in a sunny and hot climate needs more water per day than the same crop grown in a cloudy and cooler climate. Just like other abiotic elements of environmental factors such as soil and topography, they influence how crops grow and develop. It is defined as, "The quantity of water required by a crop in a given period of time for normal growth under field conditions." It includes evaporation and other unavoidable wastes. When it is dry, the crop water needs are higher than when it is humid. Provides water for its transpiration. But if the water table is much below to the ground surface, therefore water requirement will be more. When relative humidity is high there is chance for the outbreak of pest and disease. This requirement is applied either naturally by precipitation or . Several factors can directly or indirectly affect the nutritional quality of crops. More limiting than CO2 . Hence, such a method of irrigation should be adopted which uses minimum water but provides maximum humidity to the plants. [] Factors affecting ET c 53 4.8.1. There might be 5 main factors that directly affect plant growth (both positively, and negatively) Those 5 main factors are - Light (sunlight), temperature, water, humidity and nutrients. . The following features which mainly influence the crop water requirement are: 1) Crop factors a) Variety b) Growth stages c) Duration d) Plant population e) Crop growing season 2) Soil factors a) Structure b) Texture c) Depth d) Topography e) Soil chemical composition. 1. recruit more motor units, 2. increase the firing rate of motor units, or 3. synchronize the firing of motor units. there are five primary factors that affect the process of soil formation and development. Influence of Climate: Principal climatic factors influencing crop water requirement are: 1. Water conservation is the demand of the day when the whole world is facing water crisis. soil formation nutrient cycling water cycling primary production. 1. Following are the five factors affecting the water requirement of crops: 1. Crop water requirements (CWR) are defined as the depth of water (millimeters) needed to meet the water consumed through evapotranspiration (ETc) by a disease-free crop, growing in large fields under nonrestricting soil conditions, including soil water and fertility, and achieving full production potential under the given growing environment. A crop producer may not manage these 7 Factors; these are temperature, solar radiation, strong winds, inundation or flood, rainfall, carbon dioxide and altitude. FACTORS AFFECTING CROP EVAPOTRANSPIRATION 3.1 Climate: variation with time, distance, size of irrigation development, advection, altitude 3.2 Soil Water: level of .av.ailable soil water, groundwater, salinity, water and crop yields 3.3 Method of irrigation: surface, sprinkler, drip or trickle, sub-surface irrigation 3.4 Cultural Practices: fertilizers, plant population, tillage, mulching . Help. To supply water partially or totally for crop need 2. Slope and aspect affect soil formation. To cool both the soil and the plant 3. Factors determining the crop coefficient 36 4.2.1. Universal solvent for living systems. Influence of Soil Factors 4. More limiting than CO2 . Factors affecting muscle force production. Soil evaporation 37 4.2.4. Crop coefficient curves 39 4.4. 1.2 Factors affecting evapotranspiration Theoretical research and experimental studies have proven that there are several factors affecting the ammount of evapotranspiration . In hot climate the evaporation loss is more and hence the water requirement will be more and vice versa. Access to a fresh water supply is affected by the following factors: Climate - low levels of rainfall and high temperatures lead to water deficits. Weather. 4. Climate 36 4.2.3. CROP WATER REQUIREMENT-FACTORS AFFECTING CROP WATER REQUIREMENT Crop water requirement is the water required by the plants for its survival, growth, development and to produce economic parts. This requirement is applied either naturally by precipitation or .

water use. 1.2 Factors affecting evapotranspiration Theoretical research and experimental studies have proven that there are several factors affecting the ammount of evapotranspiration . Ultimately, this crop water use information comes from field measurements, and data have been used to develop models capable of simulating crop water use. To cool both the soil and the plant 3. 1. Abstract.

Water Optimum range often wider and flatter than for most physical factors . CROP WATER REQUIREMENT - POTENTIAL EVAPOTRANSPIRATION (PET) AND CONSUMPTIVE USE- FACTORS AFFECTING CROP WATER REQUIREMENT - CRITICAL STAGES - WATER REQUIREMENT OF DIFFERENT CROPS Crop water Requirement Crop water requirement is the water required by the plants for its survival, growth, development and to produce economic parts. Crop water requirements (CWR) are defined as the depth of water (millimeters) needed to meet the water consumed through evapotranspiration (ETc) by a disease-free crop, growing in large fields under nonrestricting soil conditions, including soil water and fertility, and achieving full production potential under the given growing environment.

3. To supply water partially or totally for crop need 2. Relative humidity influences the water requirement of crops Relative humidity of 40-60% is suitable for most of the crop plants. Influence of Crop Management Practices. Very few crops can perform well when relative humidity is 80% and above. Download & View Factors Affecting Crop Production.ppt as PDF for free. CROP SCIENCE In this review paper, we summarize the causes of climate change, stresses produced due to climate change, impacts on crops, modern breeding technologies, and biotechnological strategies to cope with climate change, in order . Water Requirements of Crop. By June 15, 2021 Uncategorized June 15, 2021 Uncategorized Factor # 1. ESTIMATING IRRIGATION REQUIREMENTS 57 5.1. Water requirements for the crop depend on the position of the water table. Crop water requirements versus irrigation requirements 57 5.2. See Also: Factors affecting Crop Water Requirement . The principal . Environmental or External Factors: a) Temperature b) Moisture c) Solar energy d) Composition .

factors affecting crop water requirement ppt

factors affecting crop water requirement pptÉcrit par