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All Journal Jurnal Biologi Tropis Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya
Maretik
Universitas Sembilanbelas November Kolaka
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Mathematics Physics Other

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Pengaruh Penggunaan Deltametrin pada Buah Kakao (Theobroma cacao L.) terhadap Kualitas Tanah Maretik
SAINTIFIK Vol 7 No 1 (2021): Jurnal Saintifik: Jurnal Matematika, Sains, dan Pembelajarannya
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v7i1.301

Abstract

Tanaman kakao saat ini mengalami penurunan produksi karena serangan hama penggerek buah kakao. Upaya pengendalian hama PBK biasanya menggunakan pestisida kimiawi sintetik jenis deltametrin. Namun, pemberian pestisida ini secara terus menerus dikhawatirkan akan berpengaruh buruk terhadap kualitas tanah. Tujuan dari penelitian ini adalah mengkaji pengaruh penggunaan deltametrin terhadap kualitas tanah. Penelitian ini menggunakan deltametrin dengan konsentrasi 0 ppm (kontrol) dan 25 ppm dengan 5 ulangan. Parameter kualitas tanah meliputi fisika tanah (bulk density, porositas tanah), kimia (bahan organik, C, N, P) dan biologi tanah (kelimpahan serangga tanah). Hasil yang diperoleh pada fisika tanah (porositas tanah dan bobot isi) tidak berbeda nyata antara perlakuan dan kontrol (37,80% dan 36,74% ; 1,65 g/cm3 dan 1,68 g/cm3; P<0,005). Pada biologi tanah (kelimpahan fauna tanah) ada perbedaan antara perlakuan dan kontrol (32 ekor dan 69 ekor). Pada kimia tanah (Bahan organik, C, N, P dan K) terdapat perbedaan antara perlakuan dan kontrol (1,64% dan 2,17% ; 0,95% dan 1,26% ; 0,009% dan 0,11% ; 0,009% & 0,014% ; 0,001% & 0,005% ; P<0,005). Hasil ini menunjukkan bahwa pemberian deltametrin pada tanaman kakao tidak berpengaruh terhadap sifat fisik tanah, akan tetapi berpengaruh terhadap biologi tanah yaitu terhadap kelimpahan fauna tanah, dan mempengaruhi kimia tanah.
The Growth Response and Yield of Cucumber (Cucumis sativus L.) Fertilizing in Various Doses Fitrianti Handayani; Maretik; Djunarlin Tojang; Mustafa R
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4341

Abstract

Cucumber plant (Cucumis sativus L.) is a vegetable plant that has many ingredients which can be used as vegetables, fresh vegetables, salads, or pickles and also cucumber plants can be beneficial for health. Production of cucumber plants in Indonesia from year to year has always decreased. The cause of the low production of cucumber plants in Indonesia is due to several factors, namely environmental factors, cultivation methods and also due to pests and diseases. This study aims to determine and understand the effect of organic and inorganic fertilizers on the growth and production of cucumber plants. The research design used was a randomized block design (RBD) consisting of 5 treatments repeated 3 times, namely 6 kg of goat manure/polybag (P0), 3 kg of goat manure/polybag + 2.5 g of NPK fertilizer/polybag (P1 ), 4.5 kg goat manure/polybag + 1.25 g NPK/polybag (P2), 1.5 kg goat manure/polybag + 3.75 g NPK fertilizer/polybag (P3), 5 g NPK fertilizer/ polybag (P4). The results of the analysis of the variety of application of organic fertilizer at a dose of 6 kg gave optimal results on plant height and number of fruit on cucumber plants but not on the number of leaves, age at the start of flowering, and fruit weight on cucumber plants.
Co-Authors Djunarlin Tojang Handayani, Fitrianti Mustafa R