Pengaruh Resolusi Spasial Citra Terhadap Hasil Pemetaan Kandungan Hara Nitrogen Perkebunan Karet

Abstract

Nitrogen is one of the nutrients needed in large quantities by plants. Plant with nitrogen deficiency will lead to stunted growth a n d d e c r e a s e d p l a n t p r o d u c t i v i t y . Implementation of the precision farming system on fertilizer activity in rubber plantation was done by determining fertilizer dose that is made based on soil and plants nutrient content. For large areas, it is costly analysis of plant nutrients. Therefore it is needed a technology that can estimate the condition of plant nutrients quickly and low cost. Remote sensing technology is an alternative that can be used for large areas and with a fast time and it is relatively low cost. The study was aimed to obtain information effect of spatial resolution images on the results of nitrogen content mapping on rubber plantation. Multi-resolution images used include GeoEye-1 (2 m), and Landsat 8 OLI (30 m). The method used was to build semi-empirical relationship between single band and image vegetation index with rubber plant nitrogen nutrient content. The results showed that map of nitrogen content estimate of rubber plant using Sentinel-2A (SE 0,369) image had higher accuracy than using GeoEye-1 (SE 0,519) and Landsat 8 OLI images (SE 0,462).

Pengaruh Pupuk Organik Cair dengan Penambahan Silika dan Cekaman Air terhadap Pertumbuhan Tanaman Kedelai

“…Namun berbeda halnya jika terjadi defisiensi unsur hara. Defisiensi hara nitrogen dapat mengganggu pertumbuhan dan produktivitas tanaman (Saputra et al, 2018). Faktor lingkungan yang dapat mempengaruhi pertumbuhan tanaman salah satunya pasokan air di dalam tanah.…”