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Nutrition, irrigation and weeds for maize
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High-yielding maize crops require large quantities of soil nutrients... * Maximum rate for growers aiming for a 7 t/ha dryland crop or 10 t/ha irrigated crop from ground that has been cultivated for more than 25 years and has a history of summer crops (such as sorghum, maize, millet, sunflower, cotton) or has been double-cropped with winter cereals Symptoms of nitrogen deficiency include: light green or yellowish leaves, often with a V-shaped yellow area at tips of leaves premature drying along the midrib and leaf tips stunted and slow-flowering plants short and often poorly filled ears... Even if early soil moisture at planting has been adequate to produce maximum leaf area, moisture stress later causes leaf senescence and yield depression...
GRDC Research Summaries
GRDC 2014 Research Summaries