Russian Dandelions, an alternative source of natural rubber, are planted at a de
ID: 3030141 • Letter: R
Question
Russian Dandelions, an alternative source of natural rubber, are planted at a density of 900,000 plants per ha within an experimental plot. A transplant production system, utilizing peat pots spaced 7.5 cm apart in a paper tape, is used to start the plants in a greenhouse. When transferred to the field, the peat pot tapes are placed in parallel furrows and covered with soil. What tape spacing (cm) is needed to achieve the desired plant density (900,000 plants/ha)? Russian Dandelions, an alternative source of natural rubber, are planted at a density of 900,000 plants per ha within an experimental plot. A transplant production system, utilizing peat pots spaced 7.5 cm apart in a paper tape, is used to start the plants in a greenhouse. When transferred to the field, the peat pot tapes are placed in parallel furrows and covered with soil. What tape spacing (cm) is needed to achieve the desired plant density (900,000 plants/ha)?Explanation / Answer
We know that 1 ha = 10000 square meters so that if 900000 plants are required to be planted per ha, then the plant density per square meter is 900000/10000 = 90. Now, if we divide a 1 square meter (100 * 100 = 10000 sq. cm.) plot into 90 smaller squares, the area of each smaller square will be 10000/90 = 1000/9 sq. cm. The side of such a smaller square will be (1000/9) = (10/3)10 = 10.54 cm. approximately( on rounding off to 2 decimal places). Further, if a Russian Dandelion is planted at the center of each smaller square, the distance between any two plants will be common and will be equal to the side of a smaller square which is 10.54 cm. approximately. Thus, the tape spacing (cm) needed to achieve the desired plant density (900,000 plants/ha) is 10.54 cm. approximately
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