PERFORMANCE OF SPRINKLER AND DRIP IRRIGATION IN CULTIVATION OF CRYSTAL GUAVA (Psidium guajava L.) AT P.T. GGPPG 4 EAST LAMPUNG

The research was conducted at P.T. Great Giant Pineapple Plantation Group 4 (P.T. GGPPG4) Rajabasa Lama 1, Labuhan Ratu District, East Lampung Regency. One of the cultivated plant commodities is crystal guava (Psidium guajava L. cv. Kristal). In order for the crystal guava plants to grow well, the crystal guava plantations are irrigated by means of mini sprinkler irrigation on Block 408 P covering an area of ​​4.2 ha and by drip irrigation method on Block 412 N covering an area of ​​3.46 ha. The research objective was to determine the performance of mini sprinkler irrigation and the performance of drip irrigation on crystal guava production. The uniformity coefficient of drip irrigation water was only 77.20% which was considered sufficient, while for mini sprinkler irrigation it reached 88.49%, which was classified as good based on the classification of the value of the water uniformity coefficient. The condition of the soil water content before and after the application of irrigation water on crystal guava plantations by drip irrigation and mini sprinkler irrigation methods is still within the range of available soil water content so that crystal guava plants can grow and produce well. The total water use of crystal guava plants by drip irrigation method is 2,516 m3/ha, lower than the mini sprinkler irrigation method which reaches 3,260 m3/ha. Productivity of crystal guava irrigation water by drip irrigation at P.T. GGPPG4 reached 11.942 kg/m3, which was much higher than the productivity of crystal guava irrigation using mini sprinkler irrigation which was only 4.965 kg/m3. Productivity of crystal guava water by drip irrigation at P.T. GGPPG4 is classified as very high, whereas with the mini sprinkler irrigation method it is classified as high.