Other superpower governments now publish their crop yield reports. intransitive verb To feed on growing grasses and herbage. [3], The amount of farm product produced per unit area for a given time. Crop production index (2004-2006 = 100) Food and Agriculture Organization, electronic files and web site. Crop is a synonym of yield. The U.S. government monitors crop yields of foreign countries to maintain a pulse on their economic health. Learn more. 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. 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. Innovations, such as the use of fertilizer, the creation of better farming tools, new methods of farming and improved crop varieties, have improved yields. Crop yield definition: If you yield to someone or something, you stop resisting them. assessment of crop yield forecasts for corn and soybeans. The ultimate goal of the thesis is to examine whether the NDVI model can produce accurate and timely yield forecasts. 19 examples: The soil fertility values provided a concise and effective method for including… 4.5. 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 agriculture, crop yield refers to the measure of seeds or grains which is generated from a unit of land. 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 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. ... We have collated data on grain yield, crop dry matter, or harvest index. 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. 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. The units by which the yield of a crop is usually measured today are kilograms per hectare or bushels per acre. 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. 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. Preparing NASS Production Forecasts Crop production forecasts and estimates have two components -- acres to be harvested and yield per acre. Approaches to benchmark yield and quantify yield gaps 23 4.1. 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. 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. intransitive verb To plant, grow, or yield a crop. 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. 70% less land was needed. 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. Understanding crop yield is central to sustainable development. 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. The unit by which the yield of a crop is measured is tonnes per hectare.. History. 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. The indirect effects include those on percentage emergence and time from sowing to emergence. To shear; cut the nap from, as woolen cloth. Weather data for modelling crop yield 19 3.3.3. How to use yield in a sentence. 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. Crop yield can also refer to the actual seed generation from the plant. A definition of absolute values of these is problematic. Crop yield is the amount of crop produced per unit or area of land. One of the metrics used to determine the efficiency of food production is crop yield. Measurement. Leaf area index (LAI) is an indicator of the size of assimilatory surface of a crop. Declassified CIA documents show the U.S. government has used satellite reconnaissance imagery to estimate the crop yields of foreign countries. 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 … The FAO explains the construction of the PIN in detail here. 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 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. When weeds were controlled with herbicide, no effects of crop density or spatial uniformity on crop biomass or yield were observed. 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. To estimate crop yield, producers usually count the amount of a given crop harvested in a sample area. Gross domestic product (GDP) is the monetary value of all finished goods and services made within a country during a specific period. 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. 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, Highlights We predict county-level maize and soybean yield in the United States with MODIS data. The seed ratio is another way of calculating agricultural productivity. In agriculture, crop yield refers to the measure of seeds or grains which is generated from a unit of land. 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. Chickpea 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. Choosing the right time to plant is often the most important part of … 2 Consejo Nacional de Investigaciones Científicas y Técnicas. Agricultural credit is special credit advanced to farmers, agricultural producers, and others to finance agricultural transactions. REMOTE SENSING, NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI), AND CROP YIELD FORECASTING BY XIJIE LV THESIS ... over the growing season and the final crops yield. YA allows 60% of the T-yield to replace the actual yield, where the T-yield – or transitional yield – is specified by the R… Crop yield determination is a crucial function in planning for food security of the population of a district or even of the whole country. The bottom benchmark measurement is crop yields from The Great Depression and the Dust Bowl years. [...] | Meaning, pronunciation, translations and examples 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. 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. The timeliness in producing these estimates is a vast improvement over the present assessment capability at the county level. crop yield definition in English dictionary, crop yield meaning, synonyms, see also 'crop out',crop up',crop circle',crop rotation'. To cut down needlessly the outer margins of a book. 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. Yield estimation. Yp is not shown for rainfed crops, although Yp is used for estimating the water limitation index (see definition below). Spatial estimates of crop yields at county and sub-county levels offer a major improvement of current capabilities. 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. At present, NCCPI is generated in the National Soil Information System (NASIS) environment and is reported in the Soil Data Mart and on Web Soil Survey. DEFINITION: Crop production index shows agricultural production for each year relative to … yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. Crop production index (2004-2006 = 100) Definition: Crop production index shows agricultural production for each year relative to the base period 2004-2006. Synonym Discussion of yield. There were insufficient data (n = 19) to provide meaningful insights from site × year averaging. 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). USDA National Agricultural Statistics Service Information. A crop year is a period from one year's harvest to the next for an agricultural commodity. 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. 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. The U.S. Department of Agriculture provides monthly crop yield reports of 23 products ranging from rice to tobacco. In the United States, crop yield is often referred to agricultural output and is measured in pounds or bushels per acre. Modelled yield 18 3.3.1. 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. The offers that appear in this table are from partnerships from which Investopedia receives compensation. [1] Each technological advance increasing the crop yield also reduces the society's ecological footprint. 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. Incorporating MODIS derived phenology metrics improved model performance. ​Crop yield data is important not only in the U.S. but abroad as well. Relative yield. Increased crop yields also means fewer hands are needed on farm, freeing them for industry and commerce. 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 … Definition - What does crop yield mean? Advancements in farming techniques, utilization of fertilizers, and a robust economy are contributing factors to record crop production in recent years. Yield is a synonym of crop. 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. Crop productivity index ratings from the Natural Resources Conservation Service provide a relative ranking of soils based on their potential for intensive crop production. Traditional yield: Output versus input. 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. 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. Simply put, crop yield is the values in 1961 are equal to 1.0. While some crops under some conditions do benefit, overall this is adding a massive stress to the farming infrastructure. 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. yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. Yp is used as benchmark for estimating yield gaps only for fully irrigated crops. for a range of crops grown in Australia. Crop yield sensitivity of global major agricultural countries to droughts and the projected changes in the future. 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. Sample sizes of a harvested crop are measured to determine the estimated crop yield. Accurate and timely information on crop supply and quality is crucial for policy-makers, In most of the cases yield data are not recorded, but are obtained by dividing the production data by the data on area harvested. The idea for this chart is taken from Ausubel, Wernick, and Waggoner (2013). Understanding crop yield is central to sustainable development. 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. Enrich your vocabulary with the English Definition dictionary Crop Acreage and Yield Crop Acreage and Yields USDA produces charts and maps displaying crop yields, crop weather, micromaps, and crop acreage animations. 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. Sample sizes of a harvested crop are generally measured to determine the estimated crop yield. Examples of crop yield in a sentence, how to use it. Sometimes crop yield is referred to as "agricultural output.". For the collection of crop area statistics, both subjective and objective methods are currently used around the world. 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. Bornewasser, J.A. [2] One of the three seeds must be set aside for the next planting season, the remaining two either consumed by the grower, or for livestock feed. 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). See more. Yield and return both measure an investment's financial value over a set period of time, but do it using different metrics. Plant Early, Plant Effectively. 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