THE EFFECT OF GOAT MANURE AND KNO₃ FERTILIZER ON THE GROWTH AND YIELD OF SHALLOT (Allium Ascalonicum L.)

M alif Aqil Abidin, Prof. Dr. Ir. Istirochah Pujiwati, MP, Prof. Dr. Ir. H. Agus Sugianto, ST., MP

Abstract


ABSTRACT

The aim of this research was to determine the effect of a combined dose of goat kohe and KNO₃ fertilizer on the growth and yield of shallot plants. This research was carried out in rice fields, Jl. Tirtosari No. 12, Klandungan, Landungsari Village, Dau District, Malang Regency, East Java, at an altitude of 600 meters above sea level. The experiment was carried out from June 24 to August 2025. The experimental design used was a factorial Randomized Block Design (RBD). The first factor was the dose of goat manure consisting of four levels: D0: 0 t.ha⁻¹, D1: 15 t.ha⁻¹, D2: 30 t.ha⁻¹, and D3: 45 t.ha⁻¹. The second factor was the dose of KNO₃ fertilizer consisting of four levels: K0: 0 kg.ha⁻¹, K1: 100 kg.ha⁻¹, K2: 200 kg.ha⁻¹, and K3: 300 kg.ha⁻¹. These two factors resulted in 16 treatment combinations. Data analysis was performed using the F-test at the 5% significance level (ANOVA) and response surface curve analysis. The results showed that the combination of goat manure and KNO₃ fertilizer was able to increase the growth and yield of shallot plants. The combination of 15 t.ha⁻¹ goat manure with 300 kg.ha⁻¹ KNO₃ produced growth comparable to that of 30 t.ha⁻¹ goat manure with 100 kg.ha⁻¹ KNO₃ and 45 t.ha⁻¹ goat manure combined with 300 kg.ha⁻¹ KNO₃. Meanwhile, 30 t.ha⁻¹ goat manure combined with 200–300 kg.ha⁻¹ KNO₃ produced yields comparable to those obtained with 45 t.ha⁻¹ goat manure combined with either 200 or 300 kg.ha⁻¹ KNO₃. The optimal dose of 34.403 t.ha⁻¹ goat manure combined with 134.375 kg.ha⁻¹ KNO₃ produced the best fresh bulb weight of 52.893 g, equivalent to 10.58 t.ha⁻¹.

Keywords: shallot, goat manure, KNO₃


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