TITLE:
Effect of Liquid Pig Manure and Chemical Fertilizers on Shoot Growth and Nitrogen Status of Young “Fuyu” Persimmon Trees
AUTHORS:
Seong-Tae Choi, Gwang-Hwan Ahn, Seong-Cheol Kim, Eun-Seok Kim
KEYWORDS:
Liquid Pig Manure, Persimmon, Shoot Growth, Nitrogen Uptake, Nitrogen Par-tition
JOURNAL NAME:
Journal of Agricultural Chemistry and Environment,
Vol.6 No.3,
August
29,
2017
ABSTRACT: Liquid pig manure (LPM), digested from pig slurry,
has been used as a nutrient source substituting chemical fertilizer (CF) for
some crops. This experiment was conducted to evaluate the effect of different
levels of CF and LPM in early July on nitrogen (N) uptake
of pot-grown young “Fuyu” persimmon (Diospyros
kaki). The total N and potassium (K) from CF and LPM applied to a 3 L pot
were 1.2 g N and 1.15 g K for the low and 2.4 g N and 2.3 g K for the high level.
From 2 weeks after the applications, secondary shoots started to grow for the
CF but none for the LPM. Two nutrient sources did not significantly affect the
amount of N increase in different tree parts from July 1 to August 6. At the
high level, tree total N increased by 80% from 551 mg for the CF and by 31%
from 583 mg for the LPM. The nutrient sources did not affect soil pH. The soil
that received LPM contained more organic matter (P = 0.048), available phosphorus (P) (P = 0.002), and exchangeable K+ (P = 0.001) and Mg2+ (P = 0.009) than the soil that received CF on August 6. These results
indicated that N in LPM becomes available later but its effect is more durable
than CF.