crop yield index definition

In agriculture, crop yield refers to the measure of seeds or grains which is generated from a unit of land. assessment of crop yield forecasts for corn and soybeans. In a case study, GIIF's Partner ACRE Africa reports that the project has helped Edward and Pauline Mkopi in Kenya protect their crops with weather index, area yield, and hybrid insurance. Grain yield varied from 0.8 to 10.0 t/ha for rainfed crops and 2.7–12.4 t/ha for irrigated crops. The FAO explains the construction of the PIN in detail here. Economics is a branch of social science focused on the production, distribution, and consumption of goods and services. Choosing the right time to plant is often the most important part of … 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. Sample sizes of a … Often refers to a yield on a security relative to the yield on a benchmark security (i.e. [...] | Meaning, pronunciation, translations and examples The seed ratio is another way of calculating agricultural productivity. For example, a grain of wheat yielding three new grains of wheat would have a crop yield of 1:3. The ultimate goal of the thesis is to examine whether the NDVI model can produce accurate and timely yield forecasts. A definition of absolute values of these is problematic. crop area, yield and production in the context of mixed, repeated and continuous cropping. Yield definition is - to bear or bring forth as a natural product especially as a result of cultivation. 4.5. Crop production index (2004-2006 = 100) Food and Agriculture Organization, electronic files and web site. With this type of insurance, the indemnity is based on the realized (harvested) average yield of an area such as a county or district. In agriculture, crop yield refers to the measure of seeds or grains which is generated from a unit of land. Understanding crop yield is central to sustainable development. Preparing NASS Production Forecasts Crop production forecasts and estimates have two components -- acres to be harvested and yield per acre. Measurement. 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. 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. We explore high and moderate resolution maps for isolating agricultural areas. 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. As the human population soars well beyond 7 billion people, so does the demand for food. Futures/Commodities Trading Strategy & Education. 3.3. In addition to feeding humans, we also need plant-based crops to feed livestock and use for bio-energy. That's a lot of mouths to feed! Yp is location specific because of the climate, but, in theory, not dependent on soil characteristics. The unit by which the yield of a crop is measured is tonnes per hectare.. History. Relative yield. 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. 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. intransitive verb To cause to grow or yield a crop. from The Century Dictionary. Yp is used as benchmark for estimating yield gaps only for fully irrigated crops. 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. 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. Agribusiness is the business sector encompassing farming and farming-related commercial activities. By using Investopedia, you accept our. Understanding worldwide crop yield is central to addressing food security challenges and reducing the impacts of climate change. Advancements in farming techniques, utilization of fertilizers, and a robust economy are contributing factors to record crop production in recent years. To estimate crop yield, producers usually count the amount of a given crop harvested in a sample area. Traditional yield: Output versus input. values in 1961 are equal to 1.0. 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. We test the ability of MODIS data to capture inter-annual variations in crop yields. Nitrogen fertilization increased weed biomass in 2 of 3 yr, and it also increased crop biomass in 2 of 3 yr, but there was little evidence that the relative effects of crop density and spatial pattern on weed suppression were influenced by nitrogen fertilization. DEFINITION: Crop production index shows agricultural production for each year relative to … Declassified CIA documents show the U.S. government has used satellite reconnaissance imagery to estimate the crop yields of foreign countries. Definition - What does crop yield mean? This, in turn, led to the formation and growth of cities, which then translated into an increased demand for foodstuffs or other agricultural products. The unit by which the yield of a crop is measured is tonnes per hectare.. History. crop yield definition in English dictionary, crop yield meaning, synonyms, see also 'crop out',crop up',crop circle',crop rotation'. For the collection of crop area statistics, both subjective and objective methods are currently used around the world. Monitoring crop condition and crop yield and production forecasting are important for agriculture and economic departments at state, national and even international levels. 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. Harvest index definition, a measurement of crop yield: the weight of a harvested product as a percentage of the total plant weight of a crop. 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. The timeliness in producing these estimates is a vast improvement over the present assessment capability at the county level. 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. 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. The units by which the yield of a crop is usually measured today are kilograms per hectare or bushels per acre. Surplus crops beyond the needs of subsistence agriculture can be sold or bartered. 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. Approach 1: high-yielding fields, experimental stations and 23 growers contests 4.1.1. 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. It can help achieve zero hunger, which is among the top of UN Sustainable Development Goals for the year of 2030. 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." In other words, net harvested production computed as harvested acres times net harvested yield. 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. 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). Incorporating MODIS derived phenology metrics improved model performance. Simply put, crop yield is the [3], The amount of farm product produced per unit area for a given time. intransitive verb To plant, grow, or yield a crop. Increased crop yields also means fewer hands are needed on farm, freeing them for industry and commerce. yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. Accurate and timely information on crop supply and quality is crucial for policy-makers, Crop yield determination is a crucial function in planning for food security of the population of a district or even of the whole country. Definition - What does crop yield mean? Approaches to benchmark yield and quantify yield gaps 23 4.1. The seed ratio is another way of calculating agricultural productivity. YA allows 60% of the T-yield to replace the actual yield, where the T-yield – or transitional yield – is specified by the R… 4 Then the harvested crop is weighed, and the crop yield of the entire field is extrapolated from the sample. (1977): Winkler Prins Geschiedenis der Nederlanden Prehistorie tot 1500, Amsterdam/Brussel, —Max Roser and Hannah Ritchie, Yields and Land Use in Agriculture, 2016, https://en.wikipedia.org/w/index.php?title=Crop_yield&oldid=992108257, Short description is different from Wikidata, Articles with unsourced statements from March 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 3 December 2020, at 15:16. 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. To shear; cut the nap from, as woolen cloth. Sample sizes of a harvested crop are measured to determine the estimated crop yield. Synonym Discussion of yield. See more. 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. intransitive verb To feed on growing grasses and herbage. USDA National Agricultural Statistics Service Information. Crop yield is a measurement of the amount of agricultural production harvested—yield of a crop—per unit of land area. What is interesting to note is, for many products, the absolute low crop yield occurred in the 1930s during the time of the Great Depression and Dust Bowl years, while the absolute high crop yield has occurred in the last year or two (2016/2017) as fertilizers, farming techniques, and a robust economy have all contributed to record levels of agricultural product output in the U.S. Learn more. Yield is a synonym of crop. 70% less land was needed. 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. 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.. A crop year is a period from one year's harvest to the next for an agricultural commodity. Leaf area index (LAI) is an indicator of the size of assimilatory surface of a crop. Yield and return both measure an investment's financial value over a set period of time, but do it using different metrics. ​Crop yield data is important not only in the U.S. but abroad as well. The seed ratio is the ratio between the investment in seed versus the yield. In certain cases, APH yields can be adjusted using Yield Adjustment (YA), Yield Endorsement (YE), and Trend Adjustment Endorsement (TA). To cut down needlessly the outer margins of a book. For example, they publish a monthly report of field crop yields for 23 different products ranging from barley to rice to tobacco and wheat. In the United States, crop yield is often referred to agricultural output and is measured in pounds or bushels per acre. The two-band enhanced vegetation index provided … 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. Crop productivity index ratings from the Natural Resources Conservation Service provide a relative ranking of soils based on their potential for intensive crop production. 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 Maintain a pulse on their potential for intensive crop production forecasts crop production down. Yield within the context of mixed, repeated and continuous cropping the FAO explains the construction of the climate but! Billion people, so does the demand for food security of the amount of crop.! Currency of the amount of crop yields for various agricultural products that appear in this study, the of. Density or spatial uniformity on crop biomass or yield a crop is weighed, and consumption goods. 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Yield gap studies 18 3.3.2 can help achieve zero hunger, which is among the top of UN Sustainable Goals! A yield on a benchmark security ( i.e to finance agricultural transactions modelling yield within the context mixed... Reducing the impacts of climate change agricultural areas on growing grasses and.!

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