Mulberry yields under several planting densities on hilly land
1987
Lee, J.H. | Kim, D.I. | Jeong, H.J. (Chungbuk Provincial Sericultural Experiment Station, Chungju (Korea R.)) | Lee, W.C. (Rural Development Administration, Suwon (Korea R.). Sericultural Experiment Station)
The influence of planting density, on the mulberry yield, had been studied for 5 years period since 1982. For this purpose, a hilly land (15 deg) was selected and 4 planting density levels (926, 1,667, 2,780 and 3,444 trees/10a) were used. Vinyl mulching promoted 2 days earlier of green tip sprouting stage and 3 days earlier of shallow-bill stage, compared with the non-mulching. It was shown that there is an increase in the length of the branch with vinyl mulching and decrease of the mulching effect with the higher density of plants from 2,780 trees/10a. When t1443he planting density was higher, length and width of leaf was decreased sharply, and chlorosis of the lower part of the branch was occurred heavily. With the higher planting density, number of branches per tree and average length of the branch decreased. Number of shorter branch-normal branch ratio were incre
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