Research Article
Growth, Development, and Mineral Nutrient Accumulation and Distribution in Tulip from Planting through Postanthesis Shoot Senescence
Figure 4
Changes in total dry matter (a) and N (b), P (c), K (d), Ca (e), and Mg (f) content from planting through final harvest in T. gesneriana “Paul Richter” during the growing season. For dry matter, N, K, Ca, and Mg, the arrow in each graph indicates the join points for the linear and cubic components of each curve. For P, the arrow in the graph indicates the join point for the two linear components of the curve. The equations for the above curves are as follows. (a) If ≤ 117.7, then = 9.287 − 0.0186 and if > 117.7, then = 9.287 − 0.0186 + 0.0127()2 − 0.00011()3. (b) If ≤ 83.88, then = 124.2 + 0.1040 and if > 83.88, then = 124.2 + 0.1040 + 0.0598( − 83.88)2 − 0.00038( − 83.88)3. (c) If ≤ 94.73, then = 16.48 + 0.0248 and if > 94.73, then = 16.48 + 0.0248 + 0.2084( − 94.73). (d) If ≤ 93.26, then = 79.89 − 0.0631 and if > 93.26, then = 79.89 − 0.0631 + 0.0866( − 93.26)2 − 0.00064( − 93.26)3. (e) If ≤ 94.45, then = 2.600 + 0.0308 and if > 94.45, then = 2.600 + 0.0308 + 0.0318()2 − 0.00026()3. (f) If ≤ 102.1, then = 5.291 + 0.0161 and if > 102.1, then = 5.291 + 0.0161 + 0.0122()2 − 0.00010()3.
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