Abstract
Province of North Sulawesi has been known as wave palm area (coconut). One of the plantations (coconut) potential become the farmer’s income and Locally-Generated Revenue (LGR). Therefore, it is important to maximize the soil function and root system of coconut. This research was aimed to diagnose a soil and coconut root existence in Lontang Plantation of Manado City. Soil observations were carried out on a single stretch of coconut plantations owned by community. The observation was done through the soil profile at a spacing of <1 m; 3 m and 5 m from the main tree of the coconut. The results showed that decreasing of C-Organic content in 1 m depth was not followed by enhancement of soil content weight, because C-Organic has spread equally in middle state and into the depth of >1 m on 3 and 5 m spacing profile from the main tree which categorized as low. Existence of total root length (Lrv) and dry root weight (Drv) shows that deeper soil will be more reduced of the root Lrv and Drv values along with the organic material in the bottom layer (> 1 m) lower than above it. The highest Lrv and Drv average value is located on the depth of 0 – 60 cm. Specrol existence on 1 - 3 m spacing profile have showed many soft roots which grow on these spacing. The soft root has a roles to absorb nutrient and water for the plant and direct contact with the soil.
Highlights
Inceptisol is potential to be developed as agricultural land, because it is widely spread in Indonesia, covering of 70.25 million ha of land (Puslittanak 2000; Muyassir et al 2012)
The high total-N in the mixed source fertilizer (MSF) F1 is correlated with the high organic carbon content and the low C/N ratio of the MSF F1
The results show that there are no differences in the amount of exchangeable-Ca in the soil applied with various MSF formulas (Table 3)
Summary
Inceptisol is potential to be developed as agricultural land, because it is widely spread in Indonesia, covering of 70.25 million ha of land (Puslittanak 2000; Muyassir et al 2012). The low contents of organic-C, N, P, and K (Tuherkih and Sipatuha 2009) are the challenges in developing the Inceptisol as agricultural land, or in other words the fertility status of Inceptisol is low (Abdurrahman et al 2008). In order to improve the productivity of Inceptisol, a proper fertilization is required. The use of inorganic fertilizers in a relatively high amount and the use of unbalanced nutrients can decrease soil fertility status, so the productivity of soil is less optimum (Khairatun et al 2013). The excessive use of chemical or inorganic fertilizers has forced the Indonesian government to keep subsidies on fertilizers (Idris 2017) and has caused environmental pollution both during its manufacturing processes (Mirlean and Roseinberg 2006; Kassir et al 2012) and its use (Suharsih et al 2002)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
