PEMANFAATAN LIMBAH TANAMAN ATSIRI SEBAGAI REPELEN HAMACrocidolomia binotalisPADA BROKOLI (30%) DAN PUPUK ORGANIK (2% KADAR N)

PEMANFAATAN LIMBAH TANAMAN ATSIRI SEBAGAI REPELEN HAMACrocidolomia binotalisPADA BROKOLI (30%) DAN PUPUK ORGANIK (2% KADAR N)

Mahrita Willis, Wiratno, D. Wahyuno,T. E. Wahyono, Sondang S.

ABSTRAK

Berkaitan dengan potensi limbah hasil penyulingan tanaman atsiri yang dapat digunakan sebagai mulsa dan repelen (penolak) hama serangga, perlu dilakukan penelitian lebih lanjut dalam hal perbaikan lingkungan pertanaman dan sebagai bahan penolak untuk pengendalian hama Crocidolomia binotalis pada brokoli. Penelitian dilaksanakan di Kebun Percobaan Manoko, Lembang, Jawa Barat yang dirancang dalam acak kelompok, dengan 9 perlakuan dan diulang 3 kali. Perlakuan terdiri dari limbah nilam dan seraiwangi yang dikombinasikan dengan aplikasi insektisida nabati BP1(eugenol, sitronelal dan xanthorizol)  dan BP2 (sitronelal dan phorbolester) serta insektisida kimia dengan pembanding tanpa aplikasi limbah dan aplikasi insektisida. Pengamatan dilakukan terhadap tingkat kerusakan tanaman akibat serangan hama C. binotalis, produksi tanaman, kadar N tanah dan populasi mikroba di dalam tanah sebelum tanam dan sesudah panen. Hasil penelitian menunjukkan bahwa aplikasi limbah tanaman atsiri tidak menaikkan secara nyata unsur N tetapi terhadap unsur K memberikan kontribusi yang nyata terutama aplikasi limbah nilam. Selain itu aplikasi limbah nilam berpengaruh terhadap pertumbuhan dan produksi brokoli. Kombinasi aplikasi limbah tanaman atsiri dengan insektisida nabati berbahan aktif eugenol, sitronelal dan xanthorizol (BP1) berbeda nyata positif dengan perlakuan kontrol tetapi berbeda nyata negatif dibandingkan dengan kombinasi aplikasi insektisida sintetis terhadap kerusakan akibat serangan serangga hama C. binotalis; selain itu mampu memberikan kenaikan hasil sebesar 14 % dibandingkan kontrol. Kenaikan produksi yang tertinggi dihasilkan oleh perlakuan kombinasi aplikasi limbah nilam dengan insektisida sintetis yaitu sebesar 40 %.

Kata kunci: limbah atsiri, crocidolomia binotalis, kubis, insektisida nabati

ABSTRACT

In relation to potential of essential oil plant waste  that can be used as mulch and repellent insect pests, further research needs to be done in terms of environmental improvement planting and as a repellent to control major pests on broccoli namely Crocidolomia binotalis (Lepidoptera, Crambidae).  The experiment was conducted at the Experimental Farm Manoko, Lembang, West Java, which was designed in a randomized complete block, with 9 treatments and repeated 3 times. Treatment consisted of patchouli and lemon grass waste combined with essential oils of botanical insecticide application of BP 1 (eugenol, citronellal and xanthorizol) and BP2 (citronellal and phorbolester) and chemical insecticides with a comparator without the application of waste and insecticide applications. Observations were made on the level of crop damage due to pests C. binotalis, crop production, soil N content and microbial population in the soil before planting and after harvest. The results showed that the application of sewage plants do not increase significantly essential element of N but the elements of K make a significant contribution, especially the application of waste patchouli. Further, the application of waste patchouli effect on the growth and production of broccoli. The combination application of sewage plants with insecticidal essential oils made from plant-based active eugenol, citronellal and xanthorizol (BP1) showed significantly positive different compared to the control treatment, but significantly negative different compared to a combination of synthetic insecticide application, against plant damage due to insect pests C. Binotalis; besides it was able to increase yield of 14% compared to controls. The highest increase in production generated by combination treatment of patchouli waste with synthetic insecticides application could reach 40%.

Key word:  Essential oil plant waste, Crocidolomia binotalis, cabbage, botanical insecticides

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