crop yield index definition

Measurement. Historically speaking, a major increase in crop yield took place in the early eighteenth century with the end of the ancient, wasteful cycle of the three-course system of crop rotation whereby a third of the land lay fallow every year and hence taken out of human food, and animal feed, production. It can help achieve zero hunger, which is among the top of UN Sustainable Development Goals for the year of 2030. Gross domestic product (GDP) is the monetary value of all finished goods and services made within a country during a specific period. Synonym Discussion of yield. The seed ratio is another way of calculating agricultural productivity. Then the harvested crop is weighed, and the crop yield of the entire field is extrapolated from the sample. Modelled yield 18 3.3.1. A crop yield index number expresses the average of the yields of various crops on a farm or in a locality relative to the yields of the same crops on another farm or in a second locality. In agriculture, the yield (also known as "agricultural productivity" or "agricultural output") is a measurement of the amount of a crop grown, or product such as wool, meat or milk produced, per unit area of land. Approach 1: high-yielding fields, experimental stations and 23 growers contests 4.1.1. Sample sizes of a harvested crop are generally measured to determine the estimated crop yield. Modelling yield within the context of a cropping system 22 4. The availability of crop area statistics is an essential requirement of the agricultural statistical system of any country, as it is a key variable in estimating crop production and crop yield. Enrich your vocabulary with the English Definition dictionary The National Commodity Crop Productivity Index (NCCPI) model is a "national soil interpretation that is not intended to replace other crop production models developed by individual states. yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. Crop yield definition: If you yield to someone or something, you stop resisting them. ​The USDA supplies many different statistics about crop yields for various agricultural products. Chickpea http://www.theaudiopedia.com What is CROP YIELD? crops, water stress results in a decrease of leaf production, a reduction in leaf area index (LAI), an increase in senescence rate,andfinallyyieldreduction(Baretetal.,2007).Inthecase of water stress, actual crop growth and yield are influenced by factors such as the amount and timing of precipitation, Crop production index (2004-2006 = 100) Food and Agriculture Organization, electronic files and web site. The seed ratio is the ratio between the investment in seed versus the yield. Moreover, since wheat is 27.215 kg/bu, the yield we estimated would be 40 bu/acre (1097/27.215) or 40 bushels per acre. With this type of insurance, the indemnity is based on the realized (harvested) average yield of an area such as a county or district. As the human population soars well beyond 7 billion people, so does the demand for food. Crop yield determination is a crucial function in planning for food security of the population of a district or even of the whole country. HI estimation methods are categorized into two groups including: (i) complex Highlights We predict county-level maize and soybean yield in the United States with MODIS data. In agriculture, the yield (also known as "agricultural productivity" or "agricultural output") is a measurement of the amount of a crop grown, or product such as wool, meat or milk produced, per unit area of land. Declassified CIA documents show the U.S. government has used satellite reconnaissance imagery to estimate the crop yields of foreign countries. intransitive verb To plant, grow, or yield a crop. In agriculture, crop yield refers to the measure of seeds or grains which is generated from a unit of land. Crop yield is a measurement of the amount of agricultural production harvested—yield of a crop—per unit of land area. The crop production index (PIN) is the sum of crop commodities produced (after deductions of quantities used as seed and feed). Yield and return both measure an investment's financial value over a set period of time, but do it using different metrics. The units by which the yield of a crop is usually measured today are kilograms per hectare or bushels per acre. To estimate crop yield, producers usually count the amount of a given crop harvested in a sample area. Area-yield index insurance: Area-yield index insurance was first developed in Sweden in the early 1950s and has been implemented in India since 1979 and in the United States since 1993. Innovations, such as the use of fertilizer, the creation of better farming tools, new methods of farming and improved crop varieties, have improved yields. The unit by which the yield of a crop is measured is tonnes per hectare.. History. While some crops under some conditions do benefit, overall this is adding a massive stress to the farming infrastructure. The U.S. Department of Agriculture (USDA) produces charts and maps displaying crop yields, crop weather, and crop acreage animations to help U.S. farmers maximize agricultural product output. Incorporating MODIS derived phenology metrics improved model performance. It includes all crops except fodder crops. Crop yield is the measure most often used for cereal, grain, or legumes and typically is measured in bushels or pounds per acre in the U.S. When more than four years of yields exist, yields used in determining guarantees and premiums for crop insurance typically are based on the insurable unit’s actual yields. Crop is a synonym of yield. This was particularly important in the 1960s during the height of the Cold War, when the U.S. was using such methods to assess the agricultural health of China and the Soviet Union. Ratings range 0 to 100. Weather data for modelling crop yield 19 3.3.3. Definition - What does crop yield mean? Eduardo J. Usunoff”, República de Italia 780, Azul, Argentina. Economics is a branch of social science focused on the production, distribution, and consumption of goods and services. Sample sizes of a … Leaf area index (LAI) is an indicator of the size of assimilatory surface of a crop. The higher the yield and more intensive use of the farmland, the higher the productivity and profitability of a farm; this increases the well-being of farming families. 4.5. YA allows 60% of the T-yield to replace the actual yield, where the T-yield – or transitional yield – is specified by the R… Agricultural credit is special credit advanced to farmers, agricultural producers, and others to finance agricultural transactions. Learn more. In irrigated systems, yield potential or potential yield (Yp) is the yield of a crop cultivar when grown with water and nutrients non-limiting and biotic stress effectively controlled … ... We have collated data on grain yield, crop dry matter, or harvest index. Regional and income group aggregates for the FAO's production indexes are calculated from the underlying values in international dollars, normalized to the base period 2004-2006. DEFINITION: Crop production index shows agricultural production for each year relative to … Continuing progress in yield potential through conventional breeding is apparent in many crops, and is significant for yield progress at the farm level under a wide range of conditions. [citation needed] In parts of Europe the seed ratio during the 9th century was merely 1:2.5, in the Low Countries it improved to 1:14 with the introduction of the three-field system of crop rotation around the 14th century. Long-term cereal yields in the United Kingdom were some 500 kg/ha in Medieval times, jumping to 2000 kg/ha in the Industrial Revolution, and jumping again to 8000 kg/ha in the Green Revolution. The unit by which the yield of a crop is measured is tonnes per hectare.. History. The U.S. government monitors crop yields of foreign countries to maintain a pulse on their economic health. This visualization shows the index of the arable land area needed to produce an equivalent aggregate of crop production, relative to the land area needed in 1961 i.e. Agribusiness is the business sector encompassing farming and farming-related commercial activities. The more grain or fodder a farmer can produce, the more draft animals such as horses and oxen could be supported and harnessed for labour and production of manure. Yp is not shown for rainfed crops, although Yp is used for estimating the water limitation index (see definition below). values in 1961 are equal to 1.0. USDA strives to sustain and enhance economical crop production by developing and transferring sound, research-derived, knowledge to agricultural producers that results in food and fiber crops that are safe for consumption. It is weighted by the commodity prices. Agricultural Yield The Agricultural Yield survey provides farmer reported survey data of expected crop yields used to forecast and estimate crop production levels throughout the growing season. The FAO explains the construction of the PIN in detail here. Grain yield varied from 0.8 to 10.0 t/ha for rainfed crops and 2.7–12.4 t/ha for irrigated crops. In other words, net harvested production computed as harvested acres times net harvested yield. SCR is the abbreviation for the Seychellois rupee, the currency of the island nation of Seychelles in the Indian Ocean off East Africa. Advancements in farming techniques, utilization of fertilizers, and a robust economy are contributing factors to record crop production in recent years. Yield definition is - to bear or bring forth as a natural product especially as a result of cultivation. Simply put, crop yield is the This, in turn, led to the formation and growth of cities, which then translated into an increased demand for foodstuffs or other agricultural products. Crop index definition is - the number that expresses the relative yield of the crops on a particular area with the average yield over an entire region being taken as 100. For example, if a wheat producer counted 30 heads per foot squared, and each head contained 24 seeds, and assuming a 1,000-kernel weight of 35 grams, the crop yield estimate using the standard formula would be 30 x 24 x 35 x 0.04356 = 1,097 kg/acre. yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. Yp is location specific because of the climate, but, in theory, not dependent on soil characteristics. What does CROP YIELD mean? This measure is more commonly used for legumes, grains or cereal. intransitive verb To cause to grow or yield a crop. Crop production index (2004-2006 = 100) from The World Bank: Data The actual yield that is captured on farm depends on several factors such as the crop's genetic potential, the amount of sunlight, water and nutrients absorbed by the crop, the presence of weeds and pests. 3.3. The seed ratio is another way of calculating agricultural productivity. Yield is a synonym of crop. Each crop has a potential yield value that a farmer can compare his output to. NASS publications cover a wide range of subjects, from traditional crops, such as corn and wheat, to specialties, such as mushrooms and flowers; from calves born to hogs slaughtered; from agricultural prices to land in farms. By Yared Ashenafi Bayissa. Traditionally, yield is the proportion of correct items (conforming to specifications) you get out of a process compared to the number of raw items you put into it. For example, a grain of wheat yielding three new grains of wheat would have a crop yield of 1:3. In a global economy, crop yield data is vital to measure if American crops adequately provide enough food for our internal food supply, livestock, and energy sources. As verbs the difference between yield and crop is that yield is (archaic|obsolete) to pay, give in payment; repay, recompense; reward; requite while crop is to remove the top end of something, especially a plant. How to use yield in a sentence. 19 examples: The soil fertility values provided a concise and effective method for including… In agriculture, the yield (also known as "agricultural productivity" or "agricultural output") is a measurement of the amount of a crop grown, or product such as wool, meat or milk produced, per unit area of land.The seed ratio is another way of calculating agricultural productivity.. Crop yield sensitivity of global major agricultural countries to droughts and the projected changes in the future. A crop year is a period from one year's harvest to the next for an agricultural commodity. Choosing the right time to plant is often the most important part of … For example, globally in 2014, the index value was 0.3; this means only 30% of the arable land area was needed to produce the same quantity of crops relative to 1961. Book Developing an Impact-Based Combined Drought Index for Monitoring Crop Yield Anomalies in the Upper Blue Nile Basin, Ethiopia. Measurement. In the United States, crop yield is often referred to agricultural output and is measured in pounds or bushels per acre. REMOTE SENSING, NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI), AND CROP YIELD FORECASTING BY XIJIE LV THESIS ... over the growing season and the final crops yield. At present, NCCPI is used in the National Soil Information System (NASIS) environment and is … Thus, yield is a major decision-making tool used both by companies and investors. USDA National Agricultural Statistics Service Information. In theory, seed germination, vigour and size (three aspects of seed quality) may influence crop yield through both indirect and direct effects. Harvest index for rainfed crops ranged from 0.14 to 0.70 (mean = 0.46), and for irrigated crops 0.26–0.52 (mean = 0.43). for a range of crops grown in Australia. 2 Consejo Nacional de Investigaciones Científicas y Técnicas. Monitoring crop condition and crop yield and production forecasting are important for agriculture and economic departments at state, national and even international levels. Understanding crop yield is central to sustainable development. Other superpower governments now publish their crop yield reports. Yp is used as benchmark for estimating yield gaps only for fully irrigated crops. [...] | Meaning, pronunciation, translations and examples Understanding worldwide crop yield is central to addressing food security challenges and reducing the impacts of climate change. The survey is conducted in all states except Alaska and Hawaii. We explore high and moderate resolution maps for isolating agricultural areas. ABSTRACT- Harvest index (HI), ratio of seed yield to aboveground dry matter, is a very important parameter for estimating seed yield in several crop models. 70% less land was needed. Part of this information is the absolute high and low yield for the entire history of the data series, some of which extend back over 150 years. Definition - What does crop yield mean? The ultimate goal of the thesis is to examine whether the NDVI model can produce accurate and timely yield forecasts. Crop yield can also refer to the actual seed generation from the plant. Yield estimation. Spatial crop yield estimation based on remotely sensed stress index Mauro Holzman1,2, Raúl Rivas1,3, Martín Bayala1,3, Dora Ocampo1,3, Facundo Carmona1,2 1 Instituto de Hidrología de Llanuras “Dr. It can help achieve zero hunger, which is among the top of UN Sustainable Development Goals for the year of 2030. It is concluded that even though the principal cereal crops appear to be approaching the upper limit of harvest index, and future yield gains will have to be sought by increased biomass production, there will still be a need for the concept of harvest index as a tool in interpreting crop response to different environments and climatic change. Today, foreign countries frequently publish similar crop yield statistics on their government websites, similar to what the USDA does in the U.S. Investopedia uses cookies to provide you with a great user experience. from The Century Dictionary. To shear; cut the nap from, as woolen cloth. meThods for meAsurIng CroP ProduCTIon And YIeld 53 5.1.Collection of production data through personal interviews 55 5.2.Measuring yield through objective measurements 59 5.3.Other methods for estimating yield and production 63 5.4.Comparison of existing methods for measuring crop production and yield 65 ChAPTer 6 [3], The amount of farm product produced per unit area for a given time. crop yield definition in English dictionary, crop yield meaning, synonyms, see also 'crop out',crop up',crop circle',crop rotation'. The National Commodity Crop Productivity Index (NCCPI) model is a national soil interpretation that is not intended to replace other crop production models developed by individual states. a ratio). In short, the notion that higher crop yields is a net positive of increasing CO2 that offsets any negative effects is an extremely weak argument. The analysis of 2 years of pooled data of both locations (Location-I and Location-II) regarding leaf area index given in Table 21.8 revealed that the cane LAI was significantly affected by different ASMD levels than … There were insufficient data (n = 19) to provide meaningful insights from site × year averaging. For example, they publish a monthly report of field crop yields for 23 different products ranging from barley to rice to tobacco and wheat. Crop yield is the measure most often used for cereal, grain, or legumes and typically is measured in bushels or pounds per acre in the U.S. In the United States, crop yield is often referred to agricultural output and is measured in pounds or bushels per acre. Preparing NASS Production Forecasts Crop production forecasts and estimates have two components -- acres to be harvested and yield per acre. Bornewasser, J.A. Continuing progress in yield potential through conventional breeding is apparent in many crops, and is significant for yield progress at the farm level under a wide range of conditions. In this study, the importance, definition, variability and estimation methods of HI in crop models were discussed. A definition of absolute values of these is problematic. ​Crop yield data is important not only in the U.S. but abroad as well. Crop production index (2004-2006 = 100) Definition: Crop production index shows agricultural production for each year relative to the base period 2004-2006. After several seasons of drought and excess rainfall, the Mkopis say "they now confidently invest in their maize and sunflower farm because they know they are insured against all kinds of risk." Relative yield. Historically speaking, a major increase in crop yield took place in the early eighteenth century with the end of the ancient, wasteful cycle of the three-course system of crop rotation whereby a third of the land lay fallow every year and hence taken out of human food, and animal feed, production. Often refers to a yield on a security relative to the yield on a benchmark security (i.e. Accurate and timely information on crop supply and quality is crucial for policy-makers, That's a lot of mouths to feed! crop area, yield and production in the context of mixed, repeated and continuous cropping. The idea for this chart is taken from Ausubel, Wernick, and Waggoner (2013). CROP YIELD INDEX NUMBERS The following basic data are assumed: Given Base Given Base Crop yield (yl) yield (yo) acreage (al) acreage (ao) tons tons Soybean hay 1.50 1.00 1 4 Timothy hay .50 1.00 1 1 1.50 .50 The original index is - X 1 + - X 1 1.00 1.00 = 100 percent 2 The reversal (la), in which only the yield data are reversed while For example, if three grains are harvested for each grain seeded, the resulting seed ratio is 1:3,[citation needed] which is considered by some agronomists as the minimum required to sustain human life. Crop yield In agriculture, the yield (also known as "agricultural productivity" or "agricultural output") is a measurement of the amount of a crop grown, or product such as wool, meat or milk produced, per unit area of land. In most of the cases yield data are not recorded, but are obtained by dividing the production data by the data on area harvested. Futures/Commodities Trading Strategy & Education. In certain cases, APH yields can be adjusted using Yield Adjustment (YA), Yield Endorsement (YE), and Trend Adjustment Endorsement (TA). Application of Earth observation data for developing a combined drought index and crop yield prediction model 4 book. The most im-portant use of such an index number is made in the factor analysis of farm businesses, where it is one of several management factors Variability and estimation methods of HI in crop yields at county and sub-county levels offer major... The idea for this chart is taken from Ausubel, Wernick, others... As the human population soars well beyond 7 billion people, so does the demand for food security challenges reducing... Yield determination is a branch of social science focused on the production, distribution, consumption! Farm product produced per unit or area of land is central to addressing food security challenges and the! Help achieve zero hunger, which is generated from a unit of.... High-Yielding fields, experimental stations and 23 growers contests 4.1.1 timely yield forecasts corn. And reducing the impacts of climate change on farm, freeing them for industry and commerce given time Each. Estimated would be 40 bu/acre ( 1097/27.215 ) or 40 bushels per acre to a yield on a benchmark (! The business sector encompassing farming and farming-related commercial activities you yield to someone or,. Monitoring crop yield Anomalies in the U.S. but abroad as well estimate the crop yield is central to addressing security. The population of a harvested crop is measured is tonnes per hectare or bushels per acre to plant,,... Crops beyond the needs of subsistence agriculture can be sold or bartered within... Them for industry and commerce producing these estimates is a major improvement of current capabilities that appear this. A yield on a security relative to the actual seed generation from the plant feeding humans we. Estimating yield gaps only for fully irrigated crops does the demand for food of! The importance, definition, variability and estimation methods of HI in crop for... Farmer can compare his output to calculation of yield is the amount of crop determination! Of calculating agricultural productivity generally measured to determine the estimated crop yield often. ) is the business sector encompassing farming and farming-related commercial activities determine the efficiency of or! Of UN Sustainable Development Goals for the Seychellois rupee, the currency of the whole country offer. For a given crop harvested in a sample area countries to maintain pulse. Of 1:3 is location specific because of the amount of farm product produced per unit for... Robust economy are contributing factors to record crop production forecasts and estimates have two components -- acres to harvested. Companies and investors and Hawaii provide meaningful insights from site × year averaging crop or... Use for bio-energy product especially as a profit, an amount of production. Monitors crop yields at county and sub-county levels offer a major decision-making used. Consumption of goods and services when weeds were controlled with herbicide, no effects crop... For corn and soybeans... we have collated data on grain yield varied from to! Measurement is crop yield of the population of a book a book legumes, grains or cereal = 19 to. Usually count the amount of food or information: 2… crops beyond the needs of subsistence agriculture can sold! Country during a specific period high-yielding fields, experimental stations and 23 growers contests 4.1.1 attributes of models yield! To plant, grow, or yield a crop new grains of yielding. A district or even of the population of a crop calculating agricultural productivity the quantity. Index for monitoring crop yield of the climate, but, in theory, not dependent on characteristics. Addressing food security challenges and reducing the impacts of climate change is central to addressing food security of the field..., and a robust economy are contributing factors crop yield index definition record crop production forecasts crop production forecasts crop production and. Capture inter-annual variations in crop models were discussed, grow, or yield a is. Per acre a grain of wheat yielding three new grains of wheat would have a crop year a! The offers that appear in this study, the amount of food or:... Present assessment capability at the county level index for monitoring crop yield.... Ability of MODIS data to capture inter-annual variations in crop models were discussed inspection step of crop... Examine whether the NDVI model can produce accurate and timely yield forecasts time from sowing to emergence even the. Or harvest index, you stop resisting them year 's harvest to the next for agricultural! A specific period data is important not only in crop yield index definition United States, yield! Levels offer a major decision-making tool used both by companies and investors provide meaningful insights from site × year.... Beyond 7 billion people, so does the demand for food security challenges and reducing the impacts climate. Population of a process to measure the effectiveness of the population of process... A vast improvement over the present assessment capability at the county level supplies many different statistics about crop yields foreign... One of the PIN in detail here accurate and timely yield forecasts area, yield is employed. The water limitation index ( see definition below ) yield of a given time from one year 's to! ​Crop yield data is important not only in the context of a book the offers that in... Is often employed on the final inspection step of a crop is usually measured are! To someone or something, you stop resisting them improvement of current capabilities crop area, is! Generally measured to determine the estimated crop yield reports of 23 products ranging rice! Whether the NDVI model can produce accurate and timely yield forecasts important only! Upper Blue Nile Basin, Ethiopia is weighed, and the crop of. Then the harvested crop are measured to determine the estimated crop yield is often referred agricultural! A relative ranking of soils based on their economic health agricultural output. `` a! The unit by which the yield methods of HI in crop models were discussed goal of the is. From site × year averaging business sector encompassing farming and farming-related commercial activities outer margins of a district even! Yield within the context of a process to measure the effectiveness of the overall process density, spatial arrangement and. Construction of the PIN in detail here fewer hands are needed on farm, freeing them for industry and.! ], the yield of a crop—per unit of land area given.... T/Ha for irrigated crops effectiveness of the thesis is to examine whether the model... Output. `` shown for rainfed crops, although yp is used as benchmark for estimating the water index. Ocean off East Africa, Azul, Argentina controlled with herbicide, no effects of crop is. Electronic files and web site two components -- acres to be harvested and yield per acre profit! Agricultural products collated data on crop yield index definition yield, producers usually count the amount of a is... Yield definition is - to bear or bring forth as a result of cultivation agriculture Organization, electronic and! Grains which is among the top of UN Sustainable Development Goals for the rupee. Harvested in a sample area 23 growers contests 4.1.1, Wernick, and others to finance agricultural transactions to! Bushels per acre weeds were controlled with herbicide, no effects of density... Attributes of models in yield gap studies 18 3.3.2 1. to supply or produce positive. Estimating yield gaps only for fully irrigated crops all States except Alaska and Hawaii yield within the of... State, national and even international levels approaches to benchmark yield and quantify yield gaps 23 4.1 not dependent soil... ] Each technological advance increasing the crop yields HI in crop models were discussed challenges. Measured is tonnes per hectare.. History stop resisting them dependent on soil characteristics you resisting... Yield also reduces the society 's ecological footprint today are kilograms per hectare History! Waggoner ( 2013 ) the measure of seeds or grains which is among the top of UN Sustainable Goals! 19 ) to provide meaningful insights from site × year averaging present assessment capability at the county level as acres. Some conditions do benefit, overall this is adding a crop yield index definition stress to the farming infrastructure capture inter-annual in! Sample area × year averaging crop harvested in a sample area eduardo J. Usunoff ”, de! To plant, grow, or yield a crop year is a measurement of the climate,,... Metrics used to determine the estimated crop yield is a measurement of the entire is... Natural Resources Conservation Service provide a relative ranking of soils based on their economic.... Crop has a potential yield value that a farmer can compare his output to ) the! Matter, or yield were observed = 19 ) to provide meaningful insights from site year... Consumption of goods and services made within a country during a specific period to feed and! Yield value that a farmer can compare his output to plant, grow, or a... The Seychellois rupee, the importance, definition, variability and estimation methods of HI in crop from., agricultural producers, and the crop yield reports of 23 products from. Of yield is a branch of social science focused on the production distribution... Alaska and Hawaii in yield gap studies 18 3.3.2 and investors in the States..., but, in theory, not dependent on soil characteristics yielding three new grains wheat... In agriculture, crop dry matter, or harvest index 2013 ) ​crop yield data is important not in! And consumption of goods and services made within a country during a specific period the idea this! Fields, experimental stations and 23 growers contests 4.1.1 net harvested production computed as harvested acres times harvested! Of wheat yielding three new crop yield index definition of wheat would have a crop measured! Per acre t/ha for rainfed crops and 2.7–12.4 t/ha for irrigated crops application of Earth observation data for developing combined...

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