This study aims to determine the effect of bio fertilizers and foliar fertilizers on growth and yield of celery (Apium graviolens). This research was conducted at the Experimental Garden of the Faculty of Agriculture, Amir Hamzah University, Medan, Medan Estate Village, Percut Sei Tuan District with a height of ± 25 meters above sea level, which was conducted from May to July 2020. This study used a factorial Randomized Block Design with two factors studied, namely the first factor was the concentration of bio fertilizer Impro Tanotec (H), which consisted of 4 levels, namely H0 (0 ml/l water), H1 (1,5 ml/l water), H2 (2,5 ml/l water), H3 (3,5 ml/l water), and the second factor is the concentration of foliar fertilizer Growmore (D) which consists of 4 levels, namely D0 (0 gr/lwater), D1 (1 gr/l water), D2 (2 gr/l water), and D3 (3 gr/l water). Parameters observed included plant height (cm), number of leaves, number of stalks, root length (cm), and fresh weight per plant. (gr). The results showed that the concentration of bio fertilizer had a very significant effect on plant height at the age of 20, 40, and 60 days after planting, the number of leaves at the age of 20, 40, and 60 days after planting, the number of stalks at the age of 40 and 60 days after planting, root length, and fresh weight per plant, but did not significantly affect the number of stalks at the age of 20 days after planting. The best bio-fertilizer concentration was obtained in the H3 treatment (3.5 ml/l water). The concentration of foliar fertilizer had a very significant effect on plant height at the age of 20, 40, and 60 days after planting, the number of leaves at the age of 20, 40, and 60 days after planting, the number of stalks at the age of 40 and 60 days after planting, and the fresh weight per plant, had a significant effect on root length, and had no significant effect on the number of stalks at the age of 20 days after planting. The best foliar fertilizer concentration was obtained in D3 treatment (3 gr/l water). The interaction between the concentration of bio fertilizer and foliar fertilizers had a significant effect on the number of leaves at the age of 40 and 60 days after planting, where the best treatment combination was obtained in the H3D3 treatment (bio fertilizer concentration 3.5 ml/l water and foliar fertilizer concentration 3 gr/l water).
Keterbatasan lahan di perkotaan ternyata bukanlah hambatan untuk bertani. Ide yang terkuak di benak petani setelah melihat sebagian besar lahan pertanian beralih fungsi, petani tersebut berinspirasi menumbuhkan tanaman diatas paving yang disebut hidroponik. Penggunaan sistem pertanian hidroponik hambatan lahan bisa diatasi, hasil yang diperoleh juga tak kalah bagusnya dengan sistem pertanian konvensional diperkampungan. Hidroponik adalah suatu metode bercocok tanam tanpa menggunakan media tanah, melainkan dengan menggunakan larutan mineral bernutrisi atau bahan lainnya yang mengandung unsur hara seperti sabut kelapa, serat mineral, pasir, pecahan batu bata, serbuk kayu, dan lain-lain sebagai pengganti media. Tujuan dari kegiatan ini adalah untuk memberi wawasan kepada ibu-ibu PKK di desa Marindal I tentang tanaman hidroponik yang dapat menambah pendapatan ibu-ibu di masa pandemi. Metode yang digunakan dalam kegiatan ini adalah dengan memberikan ceramah mengenai hidroponik, melakukan diskusi dan tanya jawab, melakukan praktik kegiatan bercocok tanam secara hidroponik. Dampak yang diperoleh adalah peningkatan pengetahuan ibu-ibu PKK mengenai hidroponik, serta dapat meningkatkan pendapatan di masa pandemi dengan mengusahakan tanaman hidroponik secara komersil.
As an export commodity, rubber is a major contributor to Indonesia's foreign exchange. Regarding the increase in rubber production, a study on combinations of growth regulators and rubber clones has been carried out based on plant growth and anatomical characteristics during the immature plant period. This research is conducted for eighteen months at the KSO Karang Inong plantations, PTPN-I, and PTPN-III, East Aceh District, using five clones. This study adopts a nested design with three factors: clones, Growth Regulators (GRs), and paclobutrazol. The clones used are PB 260, IRR 104, IRR 112, IRR 39, and 105. The GRs combination factor between IAA and Kinetin consists of seven levels and three levels of paclobutrazol. The results show that the rubber clones PB260 and IRR105 give higher stem girth and plant height than the other clones when applied with GRs at six different levels. The most expansive leaf area is found in clone IRR 104 compared to other clones. In addition, paclobutrazol affects plant height. Applying paclobutrazol can reduce plant height for all clones but increases stem girth, skin thickness, number and diameter of latex vessels, and total chlorophyll at 46 months after treatment.
This research was action research conducted at MA Darul Aminin NW Aikmual with research subjects was students of class XI IPA. The material taught is about the digestive system in humans. The research was conducted in two cycles. The results showed that in cycle 1 with an average of 70.50 it did not meet the KKM target of 75 but showed an increase from the pre-cycle, because it had not reached the KKM target it was necessary to carry out the next cycle action, namely cycle 2. cycle 1 showed an increase in student achievement according to the KKM target, which was 78.00. Based on these results, it can be concluded that the STAD type cooperative learning model can improve student achievement in class XI IPA MA Darul Aminin NW Aikmual.
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