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Publications
Publications (60)
Sub-Saharan Africa (SSA) has the world’s largest projected increase in demand for food. Increased dependence on imports makes SSA vulnerable to geopolitical and economic risks, while further expansion of agricultural land is environmentally harmful. Cereals, in particular, maize, millet, rice, sorghum, and wheat, take nearly 50% of the cropland and...
Context: Accurately projecting crop yields under climate change is essential for understanding potential impacts
and planning of agricultural adaptation in sub-Saharan Africa (SSA). Crop growth models and machine learning
(ML) are often used, but their effectiveness is limited by data availability, precision, and geographic coverage in
SSA.
Obje...
The demand for food is influenced by population size, type of diet and the amount of loss/waste of Agricultural products. In the present study, the amount of demand affected simultaneously by the influencing factors for the present time period, 2030 and 2050 were examined. The study examined 48 different scenarios derived from combining three level...
Iran, due to its arid and semi-arid climate, has always faced the problem of water scarcity. In recent decades, over-harvesting of water resources for agriculture has led to environmental consequences in the country. To reduce environmental damage, the amount of water withdrawal from resources should be reduced. Reducing water consumption in the ag...
Background: The value of water, energy, and food resources is such that access to and proper
use of these resources are pillars of security, success, and equality worldwide. Today,
governments are struggling to find solutions to a complex set of problems that, if left unresolved,
could lead to the collapse of human civilization. Many of these probl...
There is an uncertainty in accurate simulations of soybean models in response to high atmospheric CO2 [CO2]. There is, therefore, an opportunity to reduce model uncertainty by evaluating models using experimental data conducted under elevated [CO2]. We coordinated an initiative to evaluate, quantify, and improve multi-model simulations of soybean (...
Sub-Saharan Africa’s (SSA) demand for cereals is projected to more than double by 2050. Climate change is
generally assumed to add to the future challenges of the needed productivity increase. This study aimed to assess
(i) the potential climate change impact on four key rainfed cereals (maize, millet, sorghum and wheat) in ten SSA
countries namely...
Crop models are the primary means by which agricultural scientists assess climate change impacts on crop production. Site-based and high-quality weather and climate data is essential for agronomically and physiologically sound crop simulations under historical and future climate scenarios. Here, we describe a bias-corrected dataset of daily agro-me...
Partial shifts from animal-based to plant-based proteins in human diets could reduce environmental pressure from food systems and serve human health. Grain legumes can play an important role here. They are one of the few agricultural commodities for which Europe is not nearly self-sufficient. Here, we assessed area expansion and yield increases nee...
Soybean is the number one protein crop in the world. A rising star now
covering 8% of the global cropland, which doubled between 1961 and 1991
and again more than doubled in the last 30 years. But Europe is importing most of its soybean. What about European soybean production?
Accurate simulation of crop water use (evapotranspiration, ET) can help crop growth models to assess the likely effects of climate change on future crop productivity, as well as being an aid for irrigation scheduling for today’s growers. To determine how well maize (Zea mays L.) growth models can simulate ET, an initial inter-comparison
study was c...
Reducing water evaporation from the soil surface of the cropland is a way to save irrigation water and improve water efficiency. For the first time, we calculated how much water can be saved at the level of a country by reducing soil evaporation and runoff and whether this reduction has an effect on plant production. To determine the effects of red...
Crop models are essential in undertaking large scale estimation of crop production of diverse crop species, especially in assessing food availability and climate change impacts. In this study, an existing model (SSM, Simple Simulation Models) was adapted to simulate a large number of plant species including orchard species and perennial forages. Si...
Crop models are essential in undertaking large scale estimation of crop production of diverse crop species, especially in assessing food availability and climate change impacts. In this study, an existing model (SSM, Simple Simulation Models) was adapted to simulate a large number of plant species including orchard species and perennial forages. Si...
وجود پراکنش اراضی زیرکشت ، میتواند اهمیت زیادی در مطالعات و تصمیمات کلان کشوری در زمینههای مختلف مانند برنامهریزی و توسعه کشاورزی، ارزیابی اثرات تغییر اقلیم، بررسی خلا عملکرد و امنیت غذایی، مدیریت سیستمهای تولید دام، خدمات اکوسیستمها، مدیریت مصرف کود، تعیین الگوی کشت و سایر مطالعات در بخشهای کشاورزی، جنگلداری و مرتعداری داشته باشد. یکی از کار...
A modeling system was used to calculate the resource footprints (land, water, nutrients, energy, fuel, electricity, and carbon) on a large scale in agricultural production systems (Iran as a case study), and this report is an introduction of this modeling system for future studies. Under irrigated conditions, the highest land footprint was observed...
Chickpea is an important pulse crop, cultivated on about 18 Mha worldwide, and is both a critical diet component for large populations of semiarid tropical climate and one of the most beneficial crops for farming systems’ sustainable productivity. Chickpea originates from a fairly narrow centre of origin, that is, the middle East Anatolia, although...
Background and objectives: Wheat has an important role in feeding the people of world and Iran as well. It provides around 40 percent of edible energy and protein for people in Iran. Closing yield gap can increase wheat production, significantly. The first step of closing yield gap is to quantify the yield gap at a given region or country. The amou...
Crop yield can be affected by crop water use (evapotranspiration, ET) and vice versa, so when trying to simulate one or the other, it can be important to simulate both well. To determine how well maize growth models can simulate ET, an initial inter-comparison study was conducted under the umbrella of AgMIP (Agricultural Model Inter-Comparison and...
Soil information is a vital input for crop models applications in various large area studies including climate change impact and food security. One of the global soil databases that provide full information for crop models is HC27 of IFPRI. The quality of the database has not been assessed for crop modeling so far. A tested crop simulation model (S...
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Assessing the food availability and food security of countries is a critical exercise in which crop simulation models are essential. Application of crop models has been limited often to estimate yield per unit area of one or a few important field crops, whereas what is really required is the total national production of diverse crops including fora...
اصلاح ارقام جدید در جهت افزایش عملکرد در واحد سطح همواره یکی از راهکارهای افزایش تولید محصولات کشاورزی بوده است. شناسایی صفات گیاهی تاثیرگذار بر عملکرد میتواند روند اصلاح اراقام جدید را تسریع بخشد. هدف از این مطالعه، شناسایی صفات گیاهی کلیدی در جهت افزایش عملکرد گندم آبی در مناطق تولید گندم در سراسر ایران بود. این مطالعه به کمک شبیهسازی تاثیر صفا...
Limiting transpiration rate under high vapor pressure deficit (VPD) and/or progressive soil drying conditions are soil water conservation mechanisms that can play an important drought-adaptive role if water is limiting to support crops at its full potential. In this study, these two important physiological mechanisms were measured on parental pairs...
Limiting transpiration rate under high vapor pressure deficit (VPD) and/or progressive soil drying conditions are soil water conservation mechanisms that can play an important drought-adaptive role if water is limiting to support crops at its full potential. In this study, these two important physiological mechanisms were measured on parental pairs...
To study the factors affecting soybean yield loss, an experiment was conducted in the Kalaleh region at summer of 2016. The sampling of weeds was taken in the early growing season based on W pattern in 50 fields. In this study, all agronomic management information including land area, farmers’ experience, seedbed preparation, sowing date, cultivar...
Documenting the production process in agriculture includes providing all information and activities that shows the course of production from seedbed preparation stage to harvest stage. The aim of this research was documenting the process of rice production. For this purpose, in this research all management operations performed from seedbed preparat...
Soybean (Glycine max L.) is grown in cropping systems of Gorgan (northeast of Iran) as an oil crop. Energy flow and greenhouse gas (GHG) emissions of soybean production were analyzed based on four major production scenarios in this region. The study aimed to evaluate fuel and energy consumption and GHG emissions in order to identify and introduce t...
Usually, phosphorus after nitrogen is the most important mineral nutrient limiting growth and yield
of crops.Phosphate solubilizing rhizobacteria can change non-absorbable forms of phosphorus to
absorbable forms. In order to evaluate the effect of inoculation with bacteria Streptomyces sp.
and phosphorus (P) fertilizer rate (0, 20, 40, 60 and 80...
Isabgol (Plantago ovata Forsk) seed germination and emergence in response to drought (Polyethylene glycol 8000) and salinity stress (NaC1), temperature, pH and planting depth were studied in laboratory and greenhouse experiments. Base, optimum and ceiling germination temperature were estimated as 3.35, 21.24 and 35.04 °C, respectively. Isabgol seed...
Laboratory and greenhouse experiments were conducted to determine the effects of drought and salinity stress, temperature, pH and planting depth on yellow sweet clover (Melilotus officinalis) germination and emergence. Base, optimum and ceiling germination temperatures were estimated as 0, 18.47 and 34.60 ºC, respectively. Seed germination was sens...
Questions
Questions (3)
Hi
I would like to get some information about global climate models How they calculate data for future climates and how we can understand which model is more accurate at our Target regions
I would like to calculate the amount of received radiation in a greenhouse based on outdoor received radiation. I need to know how much the albedo is for glass or plastic
I work on wheat ideotype designig . I have a question in this case. How do you combine plant traits to find ideotype? Could you please introduce a simple way to combine the traits? Because when we combine randomly we have a lot of hypothetical variety's and it is so difficult to run the models with this much hypothetical variety's. I would like to know how to use evolutionary algorithm (semenove method) to design crops ideotypes it will be useful if somebody explain to me how can I provide these algorithm.
Thanks and regards
Majid
