A plant biologist is studying a genetically modified crop that increases yield by 35% and reduces water usage by 22% per kilogram of grain produced. If the original crop yields 4.2 tons per hectare using 3,200 m³ of water per hectare, what is the new water usage in cubic meters per kilogram of grain produced?
["How Genetically Modified Crops Boost Yield While Conserving Water: A Deep Dive", "In the ongoing effort to feed a growing global population sustainably, plant biologists are pioneering breakthroughs in crop engineering. One particularly promising development is a genetically modified (GM) crop engineered to significantly improve agricultural efficiency. This new variety not only increases yield by 35% but also reduces water consumption by 22% per kilogram of grain produced—an achievement with profound implications for food security and environmental stewardship.", "### Key Historical Yield and Water Data", "Prior to this innovation, a standard crop yielded 4.2 tons per hectare using 3,200 cubic meters of water per hectare. To calculate water use efficiency before modification, we divide water used by yield:", "[\n\ ext{Original water use per kg grain} = \frac{3,200\ \ ext{m³/ha}}{4.2\ \ ext{t/ha}} \approx 762.38\ \ ext{m³/kg}\n]", "### The Impact of Genetic Modification", "The genetically modified (GM) crop increases yield by 35%, meaning it produces more grain from the same land:", "[\n\ ext{New yield} = 4.2\ \ ext{t/ha} \ imes 1.35 = 5.67\ \ ext{t/ha}\n]", "At the same time, it reduces water usage by 22% per kilogram of grain:", "[\n\ ext{New water use per kg grain} = 762.38\ \ ext{m³/kg} \ imes (1 - 0.22) = 762.38 \ imes 0.78 \approx 594.64\ \ ext{m³/kg}\n]", "### What This Means for Sustainable Agriculture", "With the GM crop, each kilogram of grain now requires only about 594.6 cubic meters of water, compared to the original 762.4 m³/kg. This means farmers achieve the same or higher output using significantly less water—critical in regions facing drought or water scarcity.", "Beyond environmental benefits, this innovation supports food security by maximizing output without expanding farmland or straining water resources. As climate change intensifies pressure on agricultural systems, genetically improved crops like this stand out as a powerful tool for resilient farming.", "### Conclusion", "The integration of genetic modification into modern agriculture is delivering measurable results—this GM crop exemplifies how science can overcome one of humanity’s greatest challenges: producing more food efficiently, sustainably, and sustainably. For plant biologists, this is more than a data point: it’s a step toward nourishing billions with fewer resources.", "---", "Keywords: genetically modified crop, crop yield increase, water efficiency in agriculture, sustainable farming, plant biology research, water saved per kg grain, drought-resistant crops, food security technology"]
