Improvement of Plant Growth and Production of Waxy Corn with Organic-NP Enriched Manure and Inorganic Fertilizer in Sragen District of Central Java Indonesia

Abstract

Organic and inorganic fertilizer are important for crop productivity. Waxy corn (Zea mays ceratina L) is used under crop-livestock system (CLS) in Indonesia. The characterized of CLS is crop yield for food, stover and corn-husk for livestock feed, cattle dung for manure as organic fertilizer. The quality of manure could be enhanced by adding organic-N (Gliricidea sepium) and organic-P (rock phosphate, guano) at the initial fermentation process that was called manure plus. Present study investigated the effects of organic-NP enriched manure application on plant growth and waxy corn production, stover and corn-husk production in vertisol soil Sragen District, Central Java. The experiment was conducted using a randomized complete block design with seven treatments and four replicates, T1 (inorganic-NPK), T2 (manure), T3 (manure+RP), T4 (manure+guano), T5 (manure + legume), T6 (manure+ RP+legume), and T7 (manure+guano+legume). The results showed that plant height and waxy corn production non-significantly affected by the treatment. Fresh waxy corn stover production and fresh corn-husk production significantly affected by the treatments. Manure plus resulted in similar on fresh waxy corn stover production and fresh corn-husk production compared to inorganic-NP fertilizer. It was concluded that organic-NP enriched manure replaces NPK as inorganic fertilizer.