KAJIAN DOSIS PUPUK KANDANG AYAM DAN FREKUENSI PENYIRAMAN TERHADAP PERTUMBUHAN BIBIT SENGON (Paraserianthes falcataria (L) Nielson)

Abstract

The purpose of this research was to study : (1) interaction effect between the dosage of chicken manure with the frequency of watering, (2) effect of chicken manure dosage, and (3) effect of watering frequency, to the growth of sengon seedlings. This research uses a completely randomized design which was factorially composed, consisting of 2 factors, namely (1) dosage of chicken manure (D), consists of 4 levels, (2) watering frequency (F), consists of 3 levels. From these two factors, were obtained 12 treatment combinations, where each of which was replicated 3 times. Data were analyzed by Analysis of variance, continued by Honestly Significant Diferent Test. The results of this study is: (1) interaction between dosage of chicken manure and frequency of watering occurs only to seedling height, (2) the dosage of chicken manure significantly effected to stem diameter, number of compound leaves, fresh weight of seedlings, and dry weight of seedlings. While frequency of watering significantly effects only the stem diameter, (3) chicken manure with a dosage of 37.5 g/crop is optimum dosage, while watering with a frequency of 2 times a day is right frequency of watering, for the growth of sengon seedling.

EFEKTIVITAS KOMPOS PADA MEDIA TANAH TERCEMAR LIMBAH OLI BEKAS DENGAN AGEN FITOREMEDIASI TREMBESI (Samanea saman)

“…Pertumbuhan sekunder pada batang menunjukkan aktivitas xilem dan pembesaran sel yang sedang tumbuh. Aktivitas pada batang tersebut menyebabkan kambium terdorong keluar sehingga terbentuk sel baru di luar lapisan tersebut dan akhirnya peningkatan diameter tanaman (Riyanto et al, 2013). Diameter batang merupakan salah satu indikator pertumbuhan tanaman yang mudah diamati walaupun kurang efektif yang dapat dipengaruhi oleh faktor lingkungan seperti terjadinya etiolasi (Simatupang, 2019).…”