| Abstrakt: |
Dolomite (Limestone) provides beneficial nutrients to the plant and helps increase the soil's pH value to meet the plant's needs. This study focusses on the formulation of Novel Dolomite A+ Concentrated Solution (NDA), Performance comparison of NDA with inorganic chemical fertilizer and manual control treatment on the Spinacia Oleracea. The NDA was formulated using water, Dolomite base, Oil palm frond, Black Soldier Compost, and Effective Microbe. Then, 6 samples of S.Oleracea was prepared for different treatments. The samples were distributed into groups A, B, and C. These treatments were done once a week for the nutrient consistency supplied to the crop, but dolomite mixture was used to water the sample of group B every day, and the treatment was held for two months. Finally, all samples were analyzed by identifying the leaves numbers, stem thickness, pH soil, and the stem height value. Besides, the identification of Above Ground Biomass AGB (kg. hr-1) and Nitrogen Percentage Concentration (NPC) were made for evaluating these significant parameters. The NPC was analyzed by using the Kjeldahl method. The results showed the S.Oleracea of sample 2 in group B exhibited the highest stem height of 28.4 cm, the stem thickness of 5.8 mm, pH soil value of 7.5, average AGB value of 2.056×10-3 g.hr-1 among all the samples. Sample 1 of S.Oleracea in group C exhibited the highest leaves number with 17 leaves. Both S.Oleracea in group C achieved the lowest height, pH soil, and stem thickness values but achieved the highest NPC values of 0.4 % w/w. In conclusion, NDA impacted S.Oleracea growth since it had met the most stringent criteria. [ABSTRACT FROM AUTHOR] |
