The experiments were conducted in the laboratory Plant Protection Research Institute Dokki-Giza, to study the effect of Anethum groveolenus Dill, Ambrosia maritime Damaseia extract, Cumminum cyminum Cumin; Syzyguim aromaticum Clove and Allium maritime Garlic on activity of some enzymes in(Tuta absoluta Meyrick) on tomato plants were investigated. After the tested compounds application, the results revealed that these compounds had various effects on the activity alkaline phosphatases, α and β esterases and carbohydrates hydrolyzing enzymes (trehalase, invertase and amylase). The enzyme activity reduced or increased significantly. Activity of alkaline phosphatases, α and β esterases were higher in Damasiea on T. absoluta, in comparison to control. The percentage of increase of alkaline enzymes activity were +22.28 and +17.38 and +13.34 % in T. absoluta respectively. Also, in cumin and garlic extracts treatments. Generally, in case of T. absoluta treatments, the results of damasiea extract indicated high increase (+40.1% in comparison to control) in activity of beta-esterases and invertase enzymes but high decrease (+45.9%), in alpha-esterases activity only. The results indicated that the damasiea extract had direct effects on the metabolism in the body Tuta absoluta.
Aplikasi Plant Growth Promoting Rhizobacteria(PGPR) Akar Tumbuhan Putri Malu Terhadap Pertumbuhan dan Produksi Tanaman Kacang Panjang (Vigna sinensis L.). Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi PGPR akar tumbuhan putri malu terhadap pertumbuhan dan produksi tanaman kacang panjang, dan untuk meningkatkan pengetahuan, sikap dan keterampilan petani terhadap aplikasi PGPR akar tumbuhan putri malu terhadap pertumbuhan dan produksi tanaman kacang panjang. Kajian ini dilaksanakan di Desa Batara, Kecamatan Labakkang, Waktu pelaksanaan pada bulan Maret sampai bulan Mei 2020. Metode kajian dilaksanakan dengan menggunakan Uji F yang terdiri dari 4 perlakuan dan 3 ulangan, sehingga dihasilkan 12 petak percobaan. Perlakuan P0(tanpa pemberian PGPR), P1(8 ml/tanaman + 1 L air/plot), P2(8,5 ml/tanaman + 1 L air/tanaman), P3(9 ml/tanaman + 1 L air/plot). Hasil menunjukkan bahwa P1 (PGPR dosis 9 ml/tanaman + 1 L air/plot) memberikan hasil terbaik dengan rata-rata tinggi tanaman yaitu (183,38), jumlah daun (60 helai, dan berat basah (229,78 gr) diantara perlakuan lainnya.
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