| dc.description.abstract | Ultisol soils dominate most parts of Indonesia, this soil type has the main problem
of containing low P and C-Organic nutrients. This type of soil is widely used as a
sweet corn plantation, but with intensive use of inorganic fertilizers. So another
effort was made to increase the phosphorus and C-Organic content of the ultisol
soil by adding organic fertilizers such as goat manure biochar and goat manure.
This research aims to determine the effect of providing biochar and goat manure +
SP-36 fertilizer, getting the best form of goat manure and the best combination of
SP-36 fertilizer doses on the status of C-Organic, Phosphorus and the growth of
sweet corn (Zea mays Saccharata Sturt L.) on ultisol soil. This research was
conducted on the experimental land of Namo Rambe Subdistrict and the Laboratory
of the North Sumatra Agricultural Technology Assessment Center from March to
June 2023. This study used a non-factorial randomized group design (RAK) with
treatments: K: SP-36 fertilizer 150 kg/ha (100% dose), B1: goat manure biochar
20 tons/ha + SP-36 112.5 kg/ha (75% dose), B2: goat manure biochar 20 tons/ha
+ SP-36 75 kg/ha (50% dose), P1: goat manure 20 tons/ha + SP-36 112.5 kg/ha
(75% dose), and P2: goat manure 20 tons/ha + SP-36 75 kg/ha (50% dose). The
results of this study indicate that goat manure biochar and goat manure have the
same good effect in increasing soil C-Organic, soil P-available, soil pH, plant
height, number of leaves, stem diameter, crown wet weight and crown dry weight.
The best treatment is goat manure at a dose of 20 tons/ha + SP-36 75 kg/ha (50%
of the recommended dose). | en_US |
