Influence of mulching with black polyethylene film on growth, flowering and yield components of sesame cultivated at different seasons
2015
Kumazaki, T. (Meijo University, Nagoya (Japan). Faculty of Agriculture, Laboratory of Crop Science) | Uemoto, Y. | Kondo, A. | Hirano, T. | Yasumoto, S. | Katsuta, M. | Michiyama, H.
The effects of mulching with black polyethylene film on the growth, flowering and yield components of sesame cultivar 'Masekin' were examined in a temperate climate. The seeds were sown on 22 May (early seeding), 3 July (late seeding) and 14 August (extremely late seeding) in 2007 and 2009. In early seeding, mulching promoted the early growth and advanced the start of vigorous stem-elongation and first flowering. In addition, mulching increased the leaf size, chlorophyll content, number of branches and final main-stem length. It also increased the number of flowering-nodes and capsules per stem, although it scarcely affected the number of seeds per capsule or seed weight. In late seeding, mulching had less effect on the growth, flowering and yield components than in early seeding due to the warm weather during the early growing period. In late seeding in 2007 when the temperature was low during the early growing period, mulching increased the number of capsules on the branches, resulting in an increase in seed yield compared with that in 2009. In extremely late seeding, the growth was retarded and flowering was delayed, resulting in lower yield components than in the other seeding times. However, mulching prolonged the period of growth and flowering and increased yield components, resulting in an increase in seed yield.
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