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On the bunch planting method of testing sugar cane seedlings L The effect of bunch planting method on the selection of promising and vigorous growing seedling



On the bunch planting method of testing sugar cane seedlings L The effect of bunch planting method on the selection of promising and vigorous growing seedling



Rept Taiwan Sugar Expt Sta 27: 15-29



The technique of planting seedlings in bunches, which was developed in Hawaii, differs markedly from technique of single planting, the standard practice in many sugar countries, including Taiwan. Because of the large amount of land and labor that could be saved by bunch planting the efficacy of this method for Taiwan was tested. In May, 1957, 13,650 seedlings in bunches of 5 were planted in the field, making a total of 2730 bunches. Selections were made from these bunches in March, 1958, and 100 clones were taken for further testing. These selections were grouped in 3 grades according to their growth vigor. 49 in class A (best); 26 in class B (average); and 25 in C (low). All clone selections were made on a single stalk basis and propagated twice. A triple lattice experiment was conducted to test the performance of the 3 classes of clones. Comparison of the mean stalk lengths of the 3 clone classes showed that of class A to be far more significant than those of B and C. Concerning number of tillers at different growing stages and millable stalks at maturity, the mean number of stalks of the clones in class A was more significant than in class C, but the mean difference between classes A and B was statistically insignificant. Significant variation existed among the selected clone classes and the hybrid combination groups in cane yield. The mean cane yield of class A was significantly higher than that of class C, but not significantly higher than that of class B. Clones in the A and B classes selected from the bunch planting plot usually had the habit of early tasseling and a higher percentage of arrowing. It is concluded that the Hawaiian bunch planting method may have advantages for use in Taiwan.

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Related references

On tile bunch planting method of testing sugar cane seedlings. I. The effect of the bunch planting method on the selection of promising and vigorously growing seedlings.. Rep. Taiwan Sugar Exp. Stat, 27, 15-29. bibl. 11, 1962

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