SERAPAN NITROGEN DAN FOSFOR TANAMAN ECENG GONDOK SEBAGAI SUMBER DAYA PAKAN PADA “PERAIRAN“ YANG MENDAPATKAN KOTORAN ITIK

Abstract

Penelitian ini bertujuan untuk mengkaji serapan nitrogen dan fosfor tanaman eceng gondok pada “perairan” yang mendapatkan kotoran itik. Penelitian menggunakan rancangan acak lengkap (RAL) dengan 5 perlakuan dan 4 ulangan. Perlakuannya adalah T0 = limbah kotoran itik 0 gram/liter air, dan digunakan sebagai kontrol, T1 = limbah kotoran itik 5 gram/liter air, T2 = limbah kotoran itik 10 gram/liter air, T3 = limbah kotoran itik 15 gram/liter air, dan T4 = limbah kotoran itik 20 gram/liter air. Parameter penelitian adalah serapan nitrogen dan serapan fosfor eceng gondok. Data yang diperoleh dianalisis dengan menggunakan analisis ragam dilanjutkan dengan perbandingan nilai tengah BNJ untuk melihat uji beda dan uji Polinomial Ortogonal. Hasil penelitian menunjukkan bahwa penambahan kotoran itik berpengaruh terhadap serapan nitrogen dan fosfor (P<0,05). Serapan N tertinggi sebesar 319,8159 mg dicapai pada perlakuan 20,00 g/l air, sedangkan serapan P tertinggi sebesar 607,9949 mg dicapai pada perlakuan 20,00 g/l air.

Kata kunci: eceng gondok, kotoran itik, serapan nitrogen, serapan fosfor

ABSTRACT

The study aims to examine nitrogen and phosphor uptake of water hyacinth as forage resources in “water” by addition of duck manure. Experimental design used was Completely Randomized Design (CRD) with 5 treatments and 4 replications. Treatment applied were T0 = control, no duck manure addition; T1 = addition of 5 g/l of duck manure; T2 = addition of 10 g/l of duck manure; T3 = addition of 15 g/l of duck manure; T4 = addition of 20 g/l duck manure. Parameters observed are nitrogen uptake and phosphor uptake. Data were analyzed with Analysis of Variance and if there was a significant treatment effect data were continue analyzed by Tukey’s Honestly Significance Difference Test and Orthogonal Polynomial test. The results showed that the addition of duck manure affect uptake of nitrogen and phosphor (P <0.05). The uptake of N and P of water hyacinth with maximum levels occurred in 319,8159 mg the treatment of 20.00 g / l for the uptake of N and 607,9949 mg the treatment 20.00 g / l for the uptake of P. Key words: water hyacinth, duck manure, nitrogen uptake, phosphor uptake