Search

'Jayanti Agrihorti' is a superior chrysanthemum therefore rooted cuttings quality is required. In vitro propagation increases the rate of propagation and produces true-to-type plants. The research to obtain the best explants and culture medium composition that is capable of producing high-quality plants. The research was arranged in a randomized complete block design consisting of two factors. The first factor was the explant, including the apical shoot of 0.5 cm, 1.0 cm, and the nodal segment. The second factor was in vitro culture medium composition (CP), consisting of CP1 (Murashige and Skoog (MS) medium for initiation, followed by MS + 2.5 mg.L⁻¹ gibberellic acid (GA₃) for subculture), CP2 (MS + 0.25 mg.L⁻¹ benzyl amino purine (BAP) for initiation, followed by MS for subculture), CP3 (MS + 0.25 mg.L⁻¹ BAP for initiation, followed by MS + 2.5 mg.L⁻¹ GA₃ for subculture), and CP4 (MS + 0.5 mg.L⁻¹ BAP for initiation, followed by MS + 0.25 mg.L⁻¹ BAP for subculture). Acclimatization was performed after third subculture. The apical shoot size of 0.5−1.0 cm is optimum for producing chrysanthemum-rooted cuttings. Meanwhile, MS medium for initiation stage, followed by MS + 2.5 mg.L⁻¹ GA₃ for subculture is the best culture medium composition for in vitro propagation. This explant and culture medium composition produced higher chlorophyll a, b, and a+b content, thereby resulting in higher plant, more leaves, larger stem diameter, and longer root length. This are recommended for chrysanthemum propagation, particularly in 'Jayanti Agrihorti'.

Every year, the production of rice straw and cow paunch content is abundant and 80 % of them has not been utilized. This study aimed to determine the potency of ensiling treatment on them in producing bioethanol. The novelty of this study is the utilization of cow paunch content as biomass and source of microbial fiber degradation. In this study, there were six groups of treatments. Bioethanol fermentation used Saccharomyces cerevisiae. Results, ensiling treatment significantly affected (p

Almost all farmers are unaware that rice straw and paunch manure are potential feedstocks for bioethanol besides organic fertilizer, biochar, and biogas. Farmers' perceptions regarding the multiattributes of bioethanol development are still underestimated, indicating that farmers are still indecisive about the potential use of rice straw and paunch manure as feedstock for bioethanol. They still need extension and training to improve their knowledge. The Location Quotient (LQ) value of rice straw and cattle paunch manure is > 1, indicating that Karanganyar Regency could become a base for bioethanol development from rice straw and cattle paunch manure.

Potato self-sufficiency in Indonesia faces three main problems: rising air temperatures, limited availability of low-temperature land suitable for potato cultivation, and lack of high-temperature tolerant potato varieties. Therefore, it is necessary to identify the tolerance of potato variety to high-temperature. This research was conducted in two locations: the optimum temperature location and the high-temperature location, using nine varieties, are Agria, Andina, Amabile, Cingkariang, Granola L, Granola K, Margahayu, Olympus, and Tedjo-MZ. The study design uses a split plot with three replications. Differences in temperature as the main plot and varieties as subplots. Parameters observed were air temperature, growth, and yield of potato tubers. The analysis carried out were the Stress Sensitivity Index (SSI), Stress Tolerance Index (STI), Yield Stability Index (YSI), and Cluster Analysis. The results showed that there were no tolerant to high-temperature varieties. Based on the STI, only Olympus was a medium tolerant of high temperatures. Based on the Stress Sensitivity Index (SSI), four varieties are moderately susceptible to high temperatures (Olympus, Andina, Cingkariang, and Margahayu). The YSI analysis shows the same results as the SSI. The cluster analysis results showed harmony between the results of the stress index analysis and cluster analysis. Nine varieties had a high similarity (87.3%), meaning that all varieties had the same characteristics and less tolerance to high temperatures. Olympus was the more tolerant variety to high temperatures, followed by Andina, Cingkariang, and Margahayu. The four varieties consider promising potato lines in high-temperature areas.

Rice production in the karst dryland is still low, due to soil characteristics that lack nutrient availability. Meanwhile, upland rice has received less attention, and it has not been used to its full potential. This study aimed to evaluate the effect of various combinations of inorganic fertilizers, poultry manure, and upland rice varieties on the production and economic value of karst dryland in Gunungkidul, Yogyakarta. This experiment was arranged in a factorial design, with inorganic fertilizers, poultry manure, and upland rice varieties set in a randomized block design with three replications. The first factor was a combination of inorganic and organic fertilizer rates: 72 N kg ha−1 + 26 P2O5 kg ha−1 + 25 K2O ha−1 + 3 t ha−1 organic, 92 N kg ha−1 + 36 P2O5 kg ha−1 + 30 K2O kg ha−1 + 2 t ha−1 organic, 112 N kg ha−1 + 46 P2O5 kg ha−1 + 35 K2O kg ha−1 + 1 t ha−1 organic. The second factor is the upland varieties of Inpago 8, Inpago 10, and Inpago 12 and lowland variety Inpari 42 Agritan GSR, as checked. Based on the study, we concluded that the combination of 92 N kg ha−1 + 36 P2O5 kg ha−1 + 30 K2O kg ha−1 + 2 t ha−1 poultry manure fertilizers with Inpago 8 resulted in an IDR profit of 23,586,000 ha−1, and it is the most recommendable fertilizer and variety combination to be developed in the karst dryland, in consideration of land fertility and sustainability.

A study was addressed to evaluate the effect of rearing management improvement particularly for feed and housing management on milk production of dairy cattle. The investigation was performed at Kembang Village, Ampel Sub-District of Boyolali District, a location for Prima Tani implementation, involved the participation of 8 people of farmer group members. A group of four cattle fed the traditional diet, whereas the remaining four were offered the introduced diet containing elephant grass + commercial concentrate + cassava tuber. Measurements were made for feed intake, milk production, and milk density. Results showed that milk production of dairy cattle under the improved management was higher (P