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One of the important factors in the success of True Seed of Shallot (TSS)-based shallot production is the right seeding technology. The study aimed to obtain appropriate nursery techniques for producing high-quality seedlings to increase shallot productivity. The experiment was conducted in Cirebon Regency, West Java, Indonesia, from May to October 2021, using a factorial randomized block design with three treatment factors and three replications. They consisted of shallot varieties (V) (Trisula, Bima, Lokananta, and Maserati); seedlings age (U) (45 and 60 days); and seedling population density (P) (5, 7.5, and 10 g m−2 of TSS). The results revealed that seedling performance was negatively correlated to the bulb yield and revenue cost ratio (R/C). The use of young seedlings enhanced bulb production and R/C ratio in all varieties but had varied effects on cluster alterations in Maserati, Bima, and Trisula varieties. Young Lokananta seedlings prepared in the nursery at a seed density of 7.5 g m−2 proved to be the best treatment to generate the highest bulb production (39.92 t ha−1) and the highest R/C (3.62). Farmers are expected to implement seedling preparation techniques using young seedlings and managing seed populations in diverse varieties to maximize bulb production and R/C.

Garlic is usually propagated asexually from the cloves. Clove as the propagation source for garlic has many weaknesses. Alternatively, bulbils could be used for the propagation. The aim of this study was to know the effect of temperature and time of vernalization from several clones of Indonesian garlic to bulbil production. This research was conducted at a farmer’s field at Banjarnegara, Central Java, Indonesia. The experiment was arranged in a Completely Randomized Block Design with three factors: temperature of vernalization, i.e., 0, 5, and 10°C, duration of vernalization, i.e., 20, 40, and 60 days, and on 12 garlic varieties/clones (V1–V12). Cloves of garlic were vernalized in cold storage according to the treatments and then planted in the field. The results revealed that a temperature of 5°C and duration of 20 days of vernalization independently single factor increased the number of bulbils of V3. Bulbil variables of V4 and V7 were enhanced with vernalization at 0°C for 20 days, although it did not significantly differ from the control. Therefore, these clones do not need particular vernalization treatment in order to produce bulbils.