PLANTING DISTANCE AND DOSE OF ORGANIC MANURE ON THE SOIL CHEMICAL PROPERTIES AND YIELD OF LOWLAND RICE
Abstract
The objectivies of the study were to evaluate the effects of planting distance and
dose of manure applications on soil chemical properties and yield of lowland rice.
Experimental design was used a factorial randomized complete block design with
three replications. The treatments consisted of plant spacing (30 x 15, 30 x 30 and
30 x 45 cm) and manure doses (0, 10 and 20 tons manure ha-1). The results showed
that a mixture of manure and urea signicicantly affect the C-organic, N-total and Pavailable
in the soil. The average of increasing C organic was classified as low
catagories, N-total was medium and P-available was low. There was significant
interaction effect between plant spacing and mixture of dose manure and urea on
the grain yield. Increasing the level of planting distance and dose organic manure
will be stimulated on plant heigh and some yield components of rice crops and the
optimized level for organic manure application was 20 tons.ha-1 due to limitated Corganic
content in the rice field of Empetring village, Darul Kamal Aceh Besar Subdistrict
area. The average of grain yield was reached 6,26 tons ha-1 which gained in
doses of 10 tons ha-1 manure and urea mixture.