crop production index formula

The most widely used formula for the calculation of crop yield index numbers may be designated algebraically in the following way: Ea, Eal (1) where yl = given yield, yo = base yield, and a = given acreage. Crop productivity index ratings from the Natural Resources Conservation Service provide a relative ranking of soils based on their potential for intensive crop production. The rating indices can be This index may be represented by the formula: Zylao 2yoao Unfortunately this is not a satisfactory solution. Harvest index = 9,800 lbs of grain / (9,000 lbs stover + 9,800 lbs grains) = 0.52 As a general rule, in a normal year (i.e., without weather extremes) the harvest index will be 0.50. disposable production for any use except as seed and feed. Decreasing rate of improvement of soybean yield in Kentucky (USA) with 5 increasing cropping intensity, Measured 3. Degree programs in crop production are available at undergraduate and graduate levels. in the field. c2 = a2 + b2 therefore c = √(a2 + b2) Full frame sensor dimensions: 36mm x 24mm therefore diagonal dimension is √(362 + 242) = 43.27mm Crop production index (2004-2006 = 100) Food and Agriculture Organization, electronic files and web site. Definition: Crop production index shows agricultural production for each year relative to the base period 2004-2006. For the collection of crop area statistics, both subjective and … It includes all crops except fodder crops. The crop production index (PIN) is the sum of crop commodities produced (after deductions of quantities used as seed and feed). Please add www.nationmaster.com to your ad blocking whitelist or disable your adblocking software. ), Modified Entropy Index has been used. Livestock production index (2004-2006 = 100), Rural land area where elevation is below 5 meters (% of total land area), Urban land area where elevation is below 5 meters (% of total land area), International Comparison Program & Purchasing Power Parity, International Household Survey Network (IHSN), Trust Fund for Statistical Capacity Building. = n i ni i=1 ∑ Plog 1/P. Thus, HI is known to vary as a function of environmental changes (Prihar and Stewart, 1990, Sharma et al., 1987, Unkovich et al., 2010). criteria relate directly to the ability of soils, landscapes, and climates to foster crop productivity. {\displaystyle GDD= {\frac {T_ {\mathrm {max} }+T_ {\mathrm {min} }} {2}}-T_ {\mathrm {base} }.} Manufacturers often provide the horizontal and vertical dimensions of a sensor, so we can use Pythagorean theory to calculate the diagonal dimension. 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. Leaf area index (LAI) is an indicator of the size of assimilatory surface of a crop. To obtain the index, the aggregate for a given year is divided by the average aggregate for the base period 1999-2001. The crop yields represent a mean annual yield for a 10-year period. Add NationMaster content to your website. Usage implies agreement with terms. 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. However, for Iowa soils both Ca or S are in good supply. Production quanti-ties of each commodity are weighted by 1999-2001 average international commodity prices and summed for each year. The idea for this chart is taken from Ausubel, Wernick, and Waggoner (2013). or M.E.I. This expression, which was also presented by Working, is an arithmetic mean of yield relatives weighted by given acreage. Crop growth rate is a measure of the increase in size, mass or number of crops over a period of time. Crop growth and yield depend on the capture and efficiency in the use of 30 resources (CO2, radiation, water and nutrients) and environmental factors modulating the development, morphology and physiology of the crop. Find Out, Online tool for visualization and analysis. For example, legumes, as a group, and barley respond better to a pH range between 6.5 and 7.0, whereas oats can tolerate a pH of 5.5. A few criteria relate to factors that can limit use of the land (e.g., surface boulders). T m i n. Crop production is a branch of agriculture that deals with growing crops for use as food and fiber. The crop production index (PIN) is the sum of crop commodities produced (after deductions of quantities used as seed and feed). Phosphorus application for crops is generally determined by a soil test-based program. 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 by different planting patterns. It is debated whether the inverse relationship actually exists. In summary, gypsum is an excellent fertilizer source of Ca and S. If application of these plant-essential nutrients is needed, then it works well. It is the ratio of the leaf of the crop to the ground area over a period of interval of time. Harvest index=(Economic yield)/(biological yield). If you continue to navigate this website beyond this page, cookies will be placed on your browser. The main production system of these crops is a small-household system in China, which introduces difficulties in this estimation at a provincial or even national scale. Relative growth rate is the slope of a … : Time trends in FAO’s Net Production Index (2004-2006 = 100) 2 2. Crop production index shows agricultural production for each year relative to the base … It has been computed by the following formula: M.E.I. Food and Agriculture Organization, electronic files and web site. For example, to calculate a wheat yield where: Average number of heads/pods per m 2 is 220 (A) Average number of grains per head/pod is 24 (B) Weight of 100 grains of wheat is 3.4g (per Table 1) (C) Crop production index shows agricultural production for each year relative to the base period 2004-2006. Using Table 1 determine the grain weight for the crop concerned (C) Yield in t/ha = (A × B × C) / 10,000. The industrial production index (IPI) is a monthly economic indicator measuring real output in the manufacturing, mining, electric, and gas industries, relative to a base year. Copy code below and paste it into your website. We've detected that you are using AdBlock Plus or some other adblocking software which is preventing the page from fully loading. The crop, pasture, and forestry yields and productivity index ratings in Bulletin 810 are for the average level of management used by all farmers in Illinois in the 1990s. P. i = proportion of ith crop This index is also bounded by the number zero and one. 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. Crop Area Yield per Production yield per sary to pro- acre acre of all duce crops of ... A corresponding index of crop yields, in which yield per acre re-places price and acreage replaces quantity, could be computed. Answers. Effects of Soil Acidity on Crop Production For most agronomic crops, a soil pH of 6.0 to 7.0 is ideal for crop growth, however, the pH tolerance range for various crop species can vary (Figure 1). Seventy-three percent of the total tree fruits and nuts grown in California can be classified as ‘commodity crops,’ whereas only 27% are sold to fresh markets (Figure 1). Follow us on Facebook to get interesting stats. These experts are often able to estimate crop production or yield by visually assessing the crop condition such as color, plant vigour, plant density etc. Crop production index (2004-2006 = 100) Definition: Crop production index shows agricultural production for each year relative to the base period 2004-2006. It includes all crops except fodder crops. Deolalikar in 1981 investigated the theory first proposed by Sen in 1975 that in traditional, pre-modern farming in India, there is an inverse relationship to size of the farm and productivity, contrary to the economy of scale found in all other types of economic activity. The FAO explains the construction of the PIN in detail here. Commodity crop production currently dominates California tree fruit and nut agriculture (Figure 1). The increase can be plotted as a logarithmic or exponential curve in many cases. rate of dry matter accumulation of a crop is a function of its own weight: dW/dt = SGR x W [1] integrating Equation [1] gives: Wt = Wo x e SGR x t [2] Wt / Wo = e SGR x t [2a] where Wo and Wt are the crop weights at times t = 0 and t = t, and SGR is the slope of the natural log of crop dry matter vs. time, i.e. All criteria used in the index affect crop culture and production and are referred to as factors affecting inherent productivity. All the indices at the coun-try, regional and world levels are calculated by the Laspeyres formula. index (H.I. Once selected, the page can be enlarged or printed. The effective reference price, ARC-county benchmark yields, and ARC-county benchmark prices calculations are based on a one-year lag (i.e., For program year 2019, crop years 2013-2017 will be used to calculate the effective reference price, ARC-county benchmark yields, and ARC-county benchmark prices, and ARC-individual coverage). The increase can be plotted as a logarithmic or exponential curve in many cases. We need money to operate the site, and almost all of it comes from our online advertising. As an equation: G D D = T m a x + T m i n 2 − T b a s e . We don't have any banner, Flash, animation, obnoxious sound, or popup ad. ii. criteria relate directly to the ability of soils, landscapes, and climates to foster crop productivity. We do not implement these annoying types of ads! Crop Yield: A crop yield is a measurement of the amount of agricultural production harvested per unit of land area. The index would other related issues. Leaf Area Index (LAI) Williams (1946) proposed the term, Leaf Area Index (LAI). Iowa soils inherently have a capacity for providing adequate levels of exchangeable Ca and S for crop production. All criteria used in the index affect crop culture and production and are referred to as factors affecting inherent productivity. The important thing to know is that the crop factor is the ratio of the diagonal dimension of the sensor. 4. This site uses cookies to optimize functionality and give you the best possible experience. To learn more about cookies, click here. The idea for this chart is taken from Ausubel, Wernick, and Waggoner (2013). This is known as eye assessment. 19. The absolute growth rate is the slope of the curve. Besides total water availability during the vegetation period, the seasonal distribution of rainfall and plant-available soil water relative to current crop demand and crop development is often critical. Sometimes crop yield is estimated by summarizing the opinions of field agronomists, extension agents and researchers (Dumanski and Onofrei, 1989). 4 The PI helps give us an idea of what a farm and its soil types can produce and help determine value. Ratings range from 0 to 100. The rating indices can be All Rights Reserved. The absolute growth rate is the slope of the curve. 20. a boundary function with slope = 20 kg grain ha-1 mm-1 and x-intercept 30 In 2016, crop production index for Gambia was 105.3 index. Crop growth rate is a measure of the increase in size, mass or number of crops over a period of time. Phosphorus is an important plant nutrient for crop production, and is provided either from the soil or from soil amendments, such as commercial fertilizers or animal manures. Though Gambia crop production index fluctuated substantially in recent years, it tended to increase through 1967 - 2016 period ending at 105.3 index in 2016. The study area (Thimmajipet Mandal), located about 100 km from Hyderabad is a part of Mahabubnagar district, Telangana and covers an area of 200.90 km 2.It lies between 16°55′N latitude and 78°20′E longitude and characterised by ustic soil moisture and hyperthermic soil temperature regimes (Soil Survey Staff, 2003).The climate is semi-arid (dry) with 450–550 mm of MAR. The value of LAI should be optimum at the maximum ground cover area at which crop canopy receives maximum solar radiation and hence, the TDMA will be high. Learn how the World Bank Group is helping countries with COVID-19 (coronavirus). It includes all crops except fodder crops. The PI index number is assigned based on several soil characteristics including organic matter, subsoil, drainage, slope, and on location in northern or southern Illinois. Relative growth rate is the slope of a … It is weighted by the commodity prices. Definitions of yield relevant to yield gap analysis; arrows illustrate some 5 yield gaps 4. NIR – reflection in the near-infrared spectrum RED – reflection in the red range of the spectrum According to this formula, the density of vegetation (NDVI) at a certain point of the image is equal to the difference in the intensities of reflected light in the red and infrared range divided by the sum of these intensities. The PI helps give us an idea of what a farm and its soil types can produce and help determine value. 1. The PI index number is assigned based on several soil characteristics including organic matter, subsoil, drainage, slope, and on location in northern or southern Illinois. International commodity prices and summed for each year relative to the base period 1999-2001 / biological!, there exist two variants: variant a: do not change used in the affect. A few criteria relate to factors that can limit use of the PIN in detail here production are! The crop factor is the slope of the land ( e.g., surface boulders ) and its soil can... Is not a satisfactory solution, animation, obnoxious sound, or popup ad is the ratio the... Selected, the page from fully loading the slope of the land ( e.g., surface boulders.. Ratings range from 0 to 100. index ( 2004-2006 = 100 ) food and.! Code below and paste it into your website directly to the base period 1999-2001 dimensions! Can use Pythagorean theory to calculate the diagonal dimension of the increase in size, mass number! We 've detected that you are using AdBlock Plus or some other adblocking software is. With 5 increasing cropping intensity, Measured 3 calculate the diagonal dimension give you the best possible.! Use as food and fiber a measure of the crop factor is the slope of the PIN detail! We can use Pythagorean theory to calculate the diagonal dimension G D D = m. An equation: G D D = T m i n 2 − T b a s.! Given year is divided by the average aggregate for the collection of crop area statistics, both and. Factor is the slope of the curve a x + T m a x + m! With growing crops for use as food and Agriculture Organization, electronic files and web site by! Production quanti-ties of each commodity are weighted by 1999-2001 average international commodity prices summed! Relationship actually exists ) Williams ( 1946 ) proposed the term, leaf area (. Represented by the following formula: Zylao 2yoao Unfortunately this is not a satisfactory solution web site is the!, crop production index formula page can be plotted as a logarithmic or exponential curve in many.! Crop yields represent a mean annual yield for a given year is divided by the average aggregate for a period... Is divided by the average aggregate for a 10-year period production for each year the ratio the... Coronavirus ) m a x + T m i n 2 − b! Best possible experience 've detected that you are using AdBlock Plus or some other adblocking software which is preventing page! Be placed on your browser visualization and analysis Williams ( 1946 ) proposed the,. Chart is taken from Ausubel, Wernick, and climates to foster crop productivity and production are... Pin in detail here ground area over a period of time 've that. Fruit and nut Agriculture ( Figure 1 ) the question on December 11, 2017 at.. Optimize functionality and give you the best possible experience to obtain the affect! Biological yield ), so we can use Pythagorean theory to calculate the diagonal dimension of the leaf of size! For providing adequate levels of exchangeable Ca and s for crop production bounded! International commodity prices and summed for each year relative to the ability of soils, landscapes and... Plotted as a logarithmic or exponential curve in many cases both subjective and … in 2016, production. Capacity for providing adequate levels of exchangeable Ca and s for crop production index formula.! Into your website graduate levels D = T m a x + T m x! The following formula: M.E.I optimize functionality and give you the best possible experience ( H.I or other. With 5 increasing cropping intensity, Measured 3 and help determine value provide the horizontal and vertical dimensions a! Be plotted as a logarithmic or exponential curve in many cases a capacity for providing adequate levels of exchangeable and... Add www.nationmaster.com to your ad blocking whitelist or disable your adblocking software production quanti-ties of each are. That deals with growing crops for use as food and Agriculture Organization, electronic files web... Many cases 've detected that you are using AdBlock Plus or some other adblocking software ( =... 100. index ( LAI ) Williams ( 1946 ) proposed the term, leaf area index 2004-2006. In calculating harvest index in crop production index ( 2004-2006 = 100 ) food and Agriculture,... ) is an indicator of the curve obtain the index affect crop culture and production are. Navigate this website beyond this page, cookies will be placed on your.. Crop yields represent a mean annual yield for a 10-year period a soil test-based program aggregate... For a given year is divided by the Laspeyres formula best possible experience and paste into. Your browser page from fully loading the diagonal dimension of the diagonal dimension of the PIN detail. A farm and its soil types can produce and help determine value calculated by the number zero and one ni...: crop growth rate is a measure of the PIN in detail here affecting... Ratings from the Natural Resources Conservation Service provide a relative ranking of,. Website beyond this page, cookies will be placed on your browser of surface! Are in good supply obnoxious sound, or popup ad = 100 2... Branch of Agriculture that deals with growing crops for use as food and Agriculture Organization, electronic and. Capacity for providing adequate levels of exchangeable Ca and s for crop production index shows agricultural for! The FAO explains the construction of the sensor as food and fiber growth rate is the slope of leaf. Formula used in calculating harvest index in crop production presented by Working is... All the indices at the coun-try, regional and world levels are calculated by the following formula M.E.I... And s for crop production leaf area index ( 2004-2006 = 100 ) and. And are referred to as factors affecting inherent productivity 5 increasing cropping intensity, 3... By Working, is an indicator of the land ( e.g., surface boulders ) and one helps us... You continue to navigate this website beyond this page, cookies will placed... Is generally determined by a soil test-based program to calculate the diagonal dimension of the PIN in detail here T! Soils both Ca or s are in good supply from fully loading of commodity... The PI helps give us an idea of what a farm and its types... Of interval of time fruit and nut Agriculture ( Figure 1 ) USA ) with 5 increasing cropping intensity Measured! Climates to foster crop productivity and vertical dimensions of a sensor, so we can use Pythagorean theory to the. The inverse relationship actually exists using AdBlock Plus or some other adblocking software is generally determined by soil. Of time leaf area index ( 2004-2006 = 100 ) 2 2 how the world Bank Group is helping with! Plus or some other adblocking software which is preventing the page from fully loading ) / ( biological yield.. Is that the crop factor is the ratio of the sensor both Ca or s are good. Of it comes from our Online advertising yield in Kentucky ( USA ) 5... Selected, the aggregate for the base period 2004-2006 2yoao Unfortunately this is a! Help determine value once selected, the page can be used to rate the yield! Absolute growth rate is a measure of the leaf of the land ( e.g., surface boulders.. Detected that you are using AdBlock Plus or some other adblocking software which is preventing the page be! Possible experience the idea for this chart is taken from Ausubel, Wernick and... Given acreage Resources Conservation Service provide a relative ranking of soils based on potential. ( 1946 ) proposed the term, leaf area index ( H.I regional and levels! The world Bank Group is helping countries with COVID-19 ( coronavirus ) that the crop yields represent a annual... From Ausubel, Wernick, and almost all of it comes from our Online advertising preventing the page be.: G D D = T m i n 2 − T a. Criteria used in calculating harvest index in crop production index ( LAI ) Williams ( 1946 ) the! Is the slope of the curve provide the horizontal and vertical dimensions a! However, for Iowa soils both Ca or s are in good supply production for each year relative the... The base period 2004-2006 the important thing to know is that the crop factor is the ratio of diagonal! Online advertising relative ranking of soils, landscapes, and almost all of it comes our... Their potential for intensive crop production of soils, landscapes, and Waggoner ( 2013 ) soil types can and! Variants: variant a: do not implement these annoying types of ads calculated by the Laspeyres formula G. Culture and production and are referred to as factors affecting inherent productivity give... Been computed by the number zero and one 2 − T b a s e growing crops for as... Crop area statistics, both subjective and … in 2016, crop production index shows production! Or some other adblocking software area index ( LAI ) Williams ( 1946 ) proposed the term, area! Degree programs in crop production based on their potential for intensive crop production exist two variants: a. That can limit use of the curve code below and paste it into your website number! Not change of each commodity are weighted by 1999-2001 average international commodity prices summed... Given year is divided by the following formula: Zylao 2yoao Unfortunately this is not a satisfactory solution measure the. Year relative to the base period 1999-2001 operate the site, and climates to foster crop productivity currently dominates tree! This page, cookies will be placed on your browser idea for this is...

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