EFFECT OF MANURE PLUS AND INORGANIC FERTILIZER ON SWEET CORN YIELD AND NUTRITION OF STOVER AS LIVESTOCK FEED
EFFECT OF MANURE PLUS AND INORGANIC FERTILIZER ON SWEET CORN YIELD AND NUTRITION OF STOVER AS LIVESTOCK FEED
Abstrak
Sweet corn (Zea mays saccharata) sensitive to N and P deficiency, and organic-NP enriched manure
(manure plus) to become the solution. The objective of the research was to evaluate the influence of organicNP
enriched manure and manure+inorganic and
inorganic fertilizer on sweet corn
yield and
stover yield
and
NP uptake. A field experiment in Grobogan Distric-Central Java with RCBD and 7 treatments and four
replicates was conducted in Grobogan district. Level of P (RP, TSP), N (ZA, N-Leucaena leucocephala), and
K (KCl) was 200 kg N/ha, 150 P
2
O
5
/ha dan 150 kg K
2
2
O
5
O/ha, respectively. All of manure (cow, goat, poultry)
application at 20 t/ha, and manure plus. The treatments were T1 (ZA+TSP), T2 (cow manure+ZA+TSP), T3
(goat manure +ZA+TSP), T4 (poultry manure+ZA+ TSP), T5 (cow manure plus), T6 (goat manure plus), T7
(poultry manure plus). Sweet corn was harvested at 70 days after planting, the stover was cut and measured
for nutritive value. The result showed that the treatment significantly affected to nitrogen uptake, but not for
sweet corn yield and fresh stover and dry mater stover and phosphorus uptake. The result of DMRT showed
that effect of goat manure plus and poultry manure plus were significantly higher compared to ZA+TSP
treatment. Conclusion, manure plus (NP-organic enriched manure) replaces ZA+TSP as inorganic fertilizer.
Keywords : rock phosphate, stover, Leucaena leucocephala, manure, Zea mays sacchara
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