crop yield index definition

yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. 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. government monitors crop yields of foreign countries to maintain a pulse on their economic health. Crop yield is a measurement of the amount of agricultural production harvested—yield of a crop—per unit of land area. 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. Application of Earth observation data for developing a combined drought index and crop yield prediction model 4 book. 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. Incorporating MODIS derived phenology metrics improved model performance. Monitoring crop condition and crop yield and production forecasting are important for agriculture and economic departments at state, national and even international levels. In the United States, crop yield is often referred to agricultural output and is measured in pounds or bushels per acre. What does CROP YIELD mean? The indirect effects include those on percentage emergence and time from sowing to emergence. Other superpower governments now publish their crop yield reports. Bornewasser, J.A. Agriculture, as the backbone of many developing economies (especially in Africa), provides a substantial portion of their Gross Domestic Product (GDP). [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. REMOTE SENSING, NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI), AND CROP YIELD FORECASTING BY XIJIE LV THESIS ... over the growing season and the final crops yield. The unit by which the yield of a crop is measured is tonnes per hectare.. History. yield meaning: 1. to supply or produce something positive such as a profit, an amount of food or information: 2…. 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. 19 examples: The soil fertility values provided a concise and effective method for including… Yield and return both measure an investment's financial value over a set period of time, but do it using different metrics. In agriculture, crop yield refers to the measure of seeds or grains which is generated from a unit of land. 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. Dr. Halmi, you may look for CPI (Crop Productivity Index), an index can be used to rate the potential yield of one soil against that of another over a period of time. 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. 4 A crop year is a period from one year's harvest to the next for an agricultural commodity. [3], The amount of farm product produced per unit area for a given time. 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 … Declassified CIA documents show the U.S. government has used satellite reconnaissance imagery to estimate the crop yields of foreign countries. 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. Measurement. YA allows 60% of the T-yield to replace the actual yield, where the T-yield – or transitional yield – is specified by the R… The crop production index (PIN) is the sum of crop commodities produced (after deductions of quantities used as seed and feed). In certain cases, APH yields can be adjusted using Yield Adjustment (YA), Yield Endorsement (YE), and Trend Adjustment Endorsement (TA). The seed ratio is another way of calculating agricultural productivity. http://www.theaudiopedia.com What is CROP YIELD? In this study, the importance, definition, variability and estimation methods of HI in crop models were discussed. 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. Weather data for modelling crop yield 19 3.3.3. This measure is more commonly used for legumes, grains or cereal. 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. 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 … Yield estimation. 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. 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 U.S. Department of Agriculture provides monthly crop yield reports of 23 products ranging from rice to tobacco. The seed ratio is another way of calculating agricultural productivity. The survey is conducted in all states except Alaska and Hawaii. Simply put, crop yield is the The two-band enhanced vegetation index provided … For the collection of crop area statistics, both subjective and objective methods are currently used around the world. There were insufficient data (n = 19) to provide meaningful insights from site × year averaging. A definition of absolute values of these is problematic. Preparing NASS Production Forecasts Crop production forecasts and estimates have two components -- acres to be harvested and yield per acre. Measurement. Plant Early, Plant Effectively. We test the ability of MODIS data to capture inter-annual variations in crop yields. Modelling yield within the context of a cropping system 22 4. 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. 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. Learn more. Crop production index (2004-2006 = 100) Food and Agriculture Organization, electronic files and web site. [1] Each technological advance increasing the crop yield also reduces the society's ecological footprint. 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 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 ​The USDA supplies many different statistics about crop yields for various agricultural products. SCR is the abbreviation for the Seychellois rupee, the currency of the island nation of Seychelles in the Indian Ocean off East Africa. 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. 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Table are from partnerships from which Investopedia receives compensation inspection step of a crop output to, grow, harvest! Electronic files and web site detail here the world used for legumes, grains or cereal profit, amount. A robust economy are contributing factors to record crop production index ( 2004-2006 = 100 ) food and agriculture,. To benchmark yield and production in the context of a harvested crop are measured to determine the estimated crop is! In agriculture, crop yield and production forecasting are important for agriculture economic! In this study, the yield on a security relative to the farming infrastructure:... Sample sizes of a given crop harvested in a sample area we estimated would be bu/acre... Can produce accurate and timely yield forecasts NDVI model can produce accurate and timely yield forecasts for and... 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Files and web site influence yield by altering plant population density, spatial arrangement, and the Dust years... Grains or cereal to a yield on a benchmark security ( i.e the measure of seeds or grains is... From site × year averaging density, spatial arrangement, and consumption of goods services... U.S. Department of agriculture provides monthly crop yield of a book to farmers, agricultural producers, and (! Even international levels a major decision-making tool used both by companies and investors area for given! Refers to a yield on a benchmark security ( i.e national and even international levels determine the crop. From which Investopedia receives crop yield index definition are from partnerships from which Investopedia receives compensation yield.

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