Abstract
Pests and diseases are one of the obstacles in increasing production and productivity of shallots. The study was conducted in Subak Rejasa Klod, Rejasa Village, Penebel District, Tabanan Regency - Bali Province. Research was conducted in June-November 2019, using a split plot randomized block design. The main plot is shallot varieties (V) and the subplot of the technical culture innovation (P). The main plot (V) consists of 2 treatment shallots namely Bali Karet (V1) and Lokal Tabanan (V2) and the plot consisting of 3 treatment of technical culture namely existing (P1); improvement (P2); and introduction (P3). Data on growth components and crop yields are analyzed using diversity analysis and continued with the DMRT test. Analysis of farming businesses was analyzed using B/C ratio and MBCR analysis. The results showed that Spodopthera exigua and Altenaria porri at V1 are lower than V2. The highest dry weight per hectare was obtained in the Bali Karet (V1) of 20,89 tons/ha. Introduction technology (P3) is the best innovation of dry weight-weight producing per hectare on irrigation land.. The value of B/C ratio and MBCR is 1.73 and 3.06 for introduction technology. It was concluded that introduction technology was effective as innovation of pest controllers and main diseases and were able to improve the yield of the Bali Karet variety on irrigation land.
Highlights
Shallots (Allium Cepa Var.Agregatum) are one of the horticulture commodities that are consumed fresh [1] and in processed product [2,3]
Bali Karet variety was obtained from farmers in Songan Village, Kintamani-Bangli, while the Lokal Tabanan was obtained from farmers who have been planting shallots on their land for generations
The data collected were maximum plant height, maximum number of leaves, number of bulbs per clump, tuber diameter per clump, wet weight per plant, wet weight per hectare, dry weight per plant, dry weight per hectare, leek caterpillar population, the percentage of plants attacked by leek caterpillars (%), the percentage of plants attacked by trotol (A. porri) (%), and farm business analysis (B/C analysis) and feasibility analysis of a technology using Marginal Benefit Cost Ratio (MBCR)
Summary
Shallots (Allium Cepa Var.Agregatum) are one of the horticulture commodities that are consumed fresh [1] and in processed product [2,3]. In the period of 2015-2020 productivity of shallots fluctuative, between 12.26 and 14.97 tons of ha-1 [10] This decline caused by pest and disease. The development of shallots on irrigation land is a choice to support these conditions. One of the factors causing the condition is that the presence of pest attacks and diseases supported by the lack of application of technical culture technology. It is necessary to get alternatives methods to control pest and diseases that attack shallot plants. Good technical culture can monitor the existence of pests and diseases early Based on these conditions, this experiment was done to determine the effectiveness of technical culture in controlling pests and diseases in two shallots varieties on irrigation land
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