Abstract
Planting shallots in Buahan Village is only carried out once a year, namely in July. The continuous use of synthetic fertilizers at high doses without being balanced with natural fertilizers has degraded the land so that soil fertility has decreased. The negative impact caused is a decrease in the yield of shallots. Quality organic fertilizers can overcome this problem. Organic vermicompost and biosllury fertilizers are quality organic fertilizers that can replace synthetic fertilizers to increase the growth and yield of shallots. The research objective was to determine the growth and yield of shallots by giving the type and dose of organic fertilizers outside the growing season. The research was conducted from March to July 2019 in Buahan Village, Kintamani District, Bangli Regency. The study used a simple randomized block design with one factor with 6 treatments, namely B0 (Without Organic Fertilizer), B1 (2000 kg / ha vermicompost); B2 (1000 L / ha biosllury) B3 (1000kg / ha vermicompost + 500 L / ha biosllury); B4 (4000 kg / ha vermicompost); B5 (2000 L / ha biosllry); B6 (2000kg / ha vermicompost + 1000 L / ha biosllury); B7 (4000 kg / ha vermicompost + 2000L biosllry) and B8 (5000 kg / ha vermicompost + 3000L / ha biosllury). The parameters observed were plant height, number of tillers, tuber wet weight per clump, harvest dry weight of tubers per clump and number of cloves per clump, soil pH, N-total (%), C-organic and total population of soil microorganisms. The results showed that the type and dose of organic fertilizer had a significant effect on all the meters observed. Treatment of 5000 kg / ha vermicompost + 3000L / ha biosllury gave the highest yield, namely 56.8 g per clump, 60% higher than the control 35.5 g per clump.
Highlights
Bali province's shallot production in 2019 according to the Agriculture Service quoted from BPS (2019) was 19,687 tons, with an average yield of 10 tons per ha
EFFECTS OF ORGANIC FERTILIZER TYPES AND DOSAGE ON BIOLOGICAL PROPERTIES OF SOIL, GROWTH AND PRODUCTS OF ONION (Allium ascalonicum L.) OUTSIDE THE PLANTING SEASON IN BUAHAN VILLAGE, BALI, INDONESIA Ni Luh Kartini started raining so that growth was disrupted and the attack of pests was very high.The use of synthetic fertilizers and pesticides is very high without being balanced with organic fertilizers, high costs and contamination of soil and lake water by chemical waste
Onion yields can be increased again by improving environmentally friendly cultivation systems using organic fertilizers. This is in accordance with the results of Wididana's research, 1994 that organic fertilizers improve the physical, chemical and biological properties of soil and the residue does not have a negative impact
Summary
Bali province's shallot production in 2019 according to the Agriculture Service quoted from BPS (2019) was 19,687 tons, with an average yield of 10 tons per ha. Onion yields can be increased again by improving environmentally friendly cultivation systems using organic fertilizers. This is in accordance with the results of Wididana's research, 1994 that organic fertilizers improve the physical, chemical and biological properties of soil and the residue does not have a negative impact.
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