Dry Land Agriculture Development due to Water-Balanced Land

I. Made Sukerta, Cokorda Javandira, Ramdhoani, Komang Dean Ananda

Abstract

To support environmental conservation and food security, efficient and effective use of limited water resources is required. However, effective use of water resources is needed to assist planning and policymaking for crop water requirement analysis for dry lands in Bali. Farmers naturally need some information about how to effectively use rainfall from the available rain season or groundwater for planting in the fixed phase of plant growth. The research simulated alternative crop rotation patterns to maximize annual profit. The methodology consists of assessing dry land potency at the research location, developing the water balance in dray land, estimating crop water requirements in dry land, and developing a schedule of alternative cropping rotation patterns in a year. This research was conducted in several areas in Bali: Sanur, Padangbai, Banjar Bunutan, Kubut, Buleleng, Seririt, Celukan Bawang, Banyuwedang, and Gilimanuk. The results show that the intercropping revenue of cassava + maize – groundnut is 25.3% larger than that of the monoculture of cassava. October: the groundnut, maize, and sweet potatoes can be cropped from 3rd February to 17th February; cassava can be cropped from October 22 to October 29; and the crop rotation intercropping pattern of cassava + maize – groundnut can be cropped from October 22 to June 21. Fresh tuber yields of cassava intercropped with maize and groundnut are 22.54 t per hectare. Water balance analysis using Thornthwaite and Mather’s method revealed a surplus from January to April and a deficit from May to November. Intercropping patterns like cassava + corn-peanut are recommended for Bali farmers.

 

Keywords: monoculture, agriculture, dry land.

 

https://doi.org/10.55463/issn.1674-2974.51.6.21


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