To determine how many bags of fertilizer Maria needs, we first calculate the area of her rectangular garden using the formula for the area of a rectangle:
\[ \text{Area} = \text{length} \times \text{width} \]
Given that the length is 16 feet and the width is 13 feet, we can calculate the area as follows:
\[ \text{Area} = 16 , \text{feet} \times 13 , \text{feet} = 208 , \text{square feet} \]
Next, we need to find out how many bags of fertilizer Maria will require to cover this area. Each bag of fertilizer covers 26 square feet. To determine the number of bags needed, we divide the total area by the coverage area of one bag:
\[ \text{Number of bags} = \frac{\text{Area}}{\text{coverage per bag}} = \frac{208 , \text{square feet}}{26 , \text{square feet/bag}} \]
Calculating this gives:
\[ \text{Number of bags} = \frac{208}{26} = 8 \]
Maria will need 8 bags of fertilizer to cover her garden. Therefore, the answer is:
\[ \boxed{8} \]
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