Corn response to nitrogen management under fullyirrigated. As the challenges toward increasing water for irrigation become more prevalent, knowledge of crop yield response to water can facilitate the. Wheat yield and economic response to nitrogen rate and. Balanced crop nutrition nitrogen and potassium work. This draft publication deals with the relationship between water and crop yields in a simplified and easytouse form. Part 2 gives an account of water related crop yield. Response of yield and yield components of tef eragrostis. From responsesurface analyses, 63% sorghum and 70% wheat of variations in grain yield were explained by variations in available soil water at emergence and inseason precipitation. Ndvi, moisture, and corn yield response to nitrogen rates. Iv crop yield response to water the fao land and water division is engaged extensively in the enhancement of global agricultural performance. Th e complexity of crop responses to water defi cits led earlier to the use of empirical production functions as the most practical option to assess crop yield as related to water. Response of yield, quality, water and nitrogen use efficiency of tomato to different levels of water and nitrogen under drip irrigation in northwestern china. The summer flow and water yield response to timber harvest.
This publication presents a methodology to quantify yield response to water through aggregate components which form the handles to assess crop yields under both adequate and limited water supply. Crop water production functions describe the relationship of crop yield y response to varying levels of water input and can be useful for various water management applications. Knowledge of a locally developed crop yield response to irrigation water is essential for effective onfarm implementation of limited irrigation practices. In data sorted by tillage system, yield response to water supply was greater with notill than with conventional tillage in both crops 184 vs. Equation 1 is a water production function and can be applied to all. Yield response, water productivity, and seasonal water production. Water and nitrogen are two major limiting factors for upland crop growth and development in arid region. Data were analyzed using the anova procedure and means separated using lsd at. A part of this effort is the production of landmark. Nitrogen rate poundsa ndvi moisture % yield buacre 0 0. Branscheid, 1979, food and agriculture organization of the united nations edition, in english. Increasing the n availability reduced the yield gap in wheat, but the effects of n fertilizer on the yield gaps depends on water stress abeledo et al.
Irrigated corn yield response to nitrogen and water1 agronomy. Response of water use efficiency through fertigation on growth and yield of chilli crop ram kumar, ramesh pal, rajiv kumar, suraj sagar, ankur singh bist department of agricultural sciences and engineering, set, iftm university, moradabad244102 u. The relationship can be used as a production function to quantify the economic ramifications of practices which increase irrigation water salinity, such as disposal of surface and subsurface saline drainage waters into the irrigation water supply system. Benjamin usdaars, central great plains research station, 40335 county road gg, akron, co 80720 usa. Research effect of nitrogen and water deficit type on the. Aquacropthe fao crop model to simulate yield response. Furrow irrigating soybean prior to a large, unexpected rainfall event can reduce nitrogen fixation and crop yield. Du yadan, cao hongxia, liu shiquan, gu xiaobo, cao yuxin. Coupled effects of soil water and nutrients on growth and yields of maize plants in a semiarid region pedosphere 2009 19. Water use and yield response of wheat to irrigation and. The application of the model predicted that the average yield would decrease under projected climate change.
Crop yield responses in waterstressed environments. The fao land and water division is engaged extensively in the enhancement of global agricultural performance. Crop yield response to water food and agriculture organization of. Response per irrigation and yield variation between years decreased as the number of irrigations increased. Interrelations of yield, evapotranspiration, and water use ef. It is well known that corn is highly sensitive to water stress elhendawy and schmidhalter, 2010. Corn grain yield buacre 200 150 100 50 0 080 120180240 figure 1.
University of illinois adapted from better crops, vol. It simulates attainable yields of major herbaceous crops as a function of water. Adequate n slightly increased corn grain yield under stress and greatly increased yield with full irrigation. A relationship between crop yield and irrigation water salinity is developed. Grain yield versus available n relationships for 1996 were typical of responses observed across the three years of this study. Nesmith and ritchie, 1992, and timely irrigation increases yield stone et al. Aman rice to npk fertilizers in ganges tidal floodplain. Response of water coupling with n supply on maize nitrogen uptake, water and n use effi ciency, and yield in drip irrigation condition. Article in chinese guo by, gao h, tang c, liu t, chu gx. Winter wheat yield response to climate variability in. Relative yield may be predicted by rearranging the terms in equation 1 to obtain equation 2. Independence of yield potential and crop nitrogen response.
Wheat yield and economic response to nitrogen rate and timing of application ron wiederholt, ndsu nutrient management specialist. Under high water stress, the response to n was small and yield potential was low, producing a comparatively flat curve figure 1. Two year field experiment was conducted during the early rainy seasons of 2009 and 2010 at the teaching and research farm of the university of calabar, south eastern rainforest agroecology of nigeria, to evaluate the response of popcorn zea mays l. Locally developed crop response to water relationships, including crop production functions, yield response factors, and crop growth and yield parameters, can aid growers, crop. Agronomy journal abstract nitrogen management corn yield. When drought stress is not severe, the response of wheat grain yield to n fertilization increased.
Maize evapotranspiration, yield production functions. This was then used to estimate the response of the crop to additional n for a given year. The greatest biological yield was observed at combination of threeforms ofn fig 2. The variable response of dryland corn yield to soil water. Yield response of corn to deficit irrigation in a semiarid. The variable response of dryland corn yield to soil water content at planting david c.
The method presented in part a takes into account maximum and actual crop yields as influenced by water deficits using yield response functions. Predicting spatial patterns of corn yield response to fertilizer nitrogen susan eileen white iowa state university follow this and additional works at. Part of theagricultural science commons,agriculture commons,agronomy and crop sciences commons, and thesoil science commons. The 100% rate applied all at planting had the same yield as a 60% rate either applied at planting or. Potassium improves yield response to n fertilizer and n efficiency. Guidelines for the acceptable level of irrigation water. Yield, water use efficiency, and yield response factor in. Interrelations of yield, evapotranspiration, and water use. They also reported an average yield increase of 23% for adequate versus deficit water supply and around 100% for adequate versus deficit n levels in the us great plains region.
Research cgiar, crop yield response to water is published at a time of high demand for. Despite this, limited scientific information has been documented so far on their interaction effects on tef crop productivity in northern ethiopia. Predicting spatial patterns of corn yield response to. Orthogonal comparisons showed that use of mixture fertilization had more effect on yield than single form of n. As expected, available water increased wheat yield potential and the response to n. Weigh wagon was used to measure the weight of the corn. Irrigation water supplies are decreasing in many areas of the us great plains, which is requiring many farmers to consider deficitirrigating corn zea mays l. Pasture yield responses to irrigation in canterbury. During water restrictions, irrigators often choose to either keep watering their whole farm with a longer irrigation return period, or drop out paddocks and fully irrigate the remainder. Crop yield and water requirement relationships for major. This article introduces the fao crop model aquacrop. Faos crop water productivity and yield response model article pdf available in environmental modelling and software 62 august 2014 with 4,451 reads how we measure reads.
A model of crop yield response to irrigation water. Research cgi ar, crop yield response t o water is publishe d at a time of high demand for assistan ce by member countries in order to implem ent effec tive water management strategie s. The method is presented in part 1 and takes into account maximum and actual crop yields as influenced by water deficits using yield response functions relating relative yield decrease and relative evapotranspiration deficits. Corn grain yield response to crop rotation and nitrogen. Response of yield, quality, water and nitrogen use. The objective of this study was to evaluate the tolerance of soybean cultivars to waterlogged alluvial soils. Effects of different forms of nitrogen application on. Aquacropthe fao crop model to simulate yield response to. Agricultural water management, 12 1987 3121 311 elsevier science publishers b. Corn yield response to nitrogen rate and timing in sandy. Food and agriculture organization of the united nations, 1979 science 193 pages. Selectiontractor logging of the sfc increased annual yield by a maximum of 2,053 m3ha1yr1 during the seventh water year after harvest began.