The Global Trend of the Net Irrigation Water Requirement of Maize from 1960 to 2050

Abstract

Irrigated production around the world has significantly increased over the last decade. However, climate change is a new threat that could seriously aggravate the irrigation water supplies and request. In this study, the data is derived from the IPCC Fifth Assessment Report (AR5). For the climate change scenarios, five Global Climate Models (GCMs) have been used. By using the CROPWAT approach of Smith, the net irrigation water requirement (IRnet) was calculated. For the estimation of the potential evapotranspiration (Epot), the method in Raziei and Pereira was used. According to representative concentration pathway (RCP) 4.5, these increases vary between 0.74% (North America) and 20.92% (North America) while the RCP 8.5 predict increases of 4.06% (sub-Saharan Africa) to more than 68% (North America). The results also show that the region of Latin America is the region with the large amount of IRnet with coprime value between 1.39 km3/yr (GFDL 4.5) and 1.48 km3/yr (CSIRO 4.5) while sub-Saharan Africa has the smallest IRnet amount between 0.13 km3/yr (GFDL 8.5) and 0.14 km3/yr (ECHAM 8.5). However, the most affected countries by this impact are those in sub-Saharan Africa. This study will probably help decision-makers to make corrections in making their decision.

Genome-Wide Identification and Analysis of the Maize Serine Peptidase S8 Family Genes in Response to Drought at Seedling Stage

“…Climate change is a new threat that could seriously aggravate irrigation water supplies and requests, and it is also a strong reason for severe drought. Drought, as one of the most widespread natural phenomena, can affect the plant life cycle and eventually result in yield loss and poor seed quality [ 30 , 31 , 32 ]. As such, excavating more drought tolerance-related genes accurately and effectively to improve plants’ drought tolerance and reduce yield losses is urgently needed to stabilize the global productivity of crops.…”

The Integration of Bio and Organic Fertilizers Improve Plant Growth, Grain Yield, Quality and Metabolism of Hybrid Maize (Zea mays L.)

“…Maize (Zea mays L.) is one of the most important cereal crops in the world both as food and feed. Its total world production ranks third, following wheat and rice, and it is consider a staple food in many countries, especially those in the tropics and sub-tropics [1][2][3][4]. In Egypt, maize is considered the second most important crop, where the annual production of the grain reached about 6.8 million tons from 315,000 hectares in 2018 [5].…”

Sprinkler Technology Improves Broiler Production Sustainability: From Stress Alleviation to Water Usage Conservation: A Mini Review

“…Globally water use is anticipated to increase by 55 percent by 2055 (1), while at the same time surface and groundwater resources for both agriculture use and human consumption will dramatically decrease in the coming decades due to climate change (2). Water is a crucial component for poultry production, not only for bird consumption, but also to alleviate heat stress during the critical cooling periods in tunnel-ventilated broiler houses (3).…”