Effect of phosphate solubilizing microorganism to Aspergillus flavus development on peanut germination.  Phosphate solubilizing microorganisms (PSM) are microorganisms which could increase the available P in plant media.   The aim of this research is to determine the effect of PSM on A. flavus growth, and to identify it’s effects on the growth dynamics of  A. flavus as long as the peanut germination.  The research were conducted in the Laboratory of Plant Diseases Department, Faculty of Agriculture, University of Jember, from August 2005 to May 2006 and divided in 2 stages: in vitro and germination stage.  Base on in-vitro stage we concluded that Bacillus subtilis strain SK had better inhibition toward the growth of A. flavus than Pseudomonas fluorescent strain GM.  B. subtilis strain SK could inhibit A. flavus as much as 74%, whereas P. fluorescent strain GM was only reached 60% compared to control.  Base on the germination stage, B. subtilis in the desiccator supernatant (BsDS) could increase the dry weight of root up to 24.1 g better than P. fluorescens strain GM and control.  We also found that B. subtilis strain SK was more effective to change the availability of P on plant media.

Spodoptera exigua Hbn merupakan hama tanaman bawang merah koloni ulat kecil-kecil membuat lubang pada daun, kemudian merusak jaringan vasikuler dan masuk ke pipa daun sambil memangsa daging daunsebelah dalam. Daun bawang merah tampak bercak putih memanjang seperti membran, kemudian layu, berlubang, dan didekat lubang tersebut terdapat kotoran ulat. Pada saat ini usaha pencegahan dan penanggulangan kerusakan tanaman karena Spodoptera exigua khususnya masih banyak dilakukan dengan insektisida sintetis, penggunaan insektisida organik yang lebih aman masih jarang digunakan, misalnya ekstrak biji mimba dan ekstrak daun mimba. Selama ini tanaman mimba tidak diusahakan hanya sebagai tanaman peneduh, maka dari itu perlu dilakukan penelitian untuk melihat adanya pengaruh beberapa konsentrasi ekstrak biji dan daun mimba (Azadirachta indica L.) terhadap kematian dan perkembangan larva Spodoptera exigua Hbn.    Tujuan dari penelitian ini adalah untuk mengetahui efektifitas bagian tanaman mimba (biji dan daun) terhadap kematian dan perkembangan larva Spodoptera exigua Hbn. Metode penelitian menggunakan Rancangan Acak Lengkap (RAL) Faktorial yang terdiri dari dua faktor dan masing-masing diulang 3 kali. Tempat dan waktu penelitian dilaksanakan di Laboratorium Pertanian Universitas Panca Marga Kabupaten Probolinggo pada bulan Januari 2016 sampai dengan bulan April 2016. Populasi Spodoptera exigua Hbn dari hasil pembiakan masal. Jumlah sampel 180 larva instar 3 dengan rincian 150 larva sebagai perlakuan dan 30 larva sebagai kontrol. Analisa data menggunakan analisa probit dan uji lanjut dengan BNJ 5%. Hasil analisa probit menunjukkan kemampuan untuk membunuh 50% populasi Spodoptera exigua Hbn untuk ekstrak biji membutuhkan 48,732 g/l sedangkan untuk ekstrak daun membutuhkan 107,363 g/l. Dan untuk waktu membunuh 50% populasi hama Spodoptera exigua Hbn untuk ekstrak biji konsentrasi 100% mempunyai waktu tersingkat yaitu 2 jam 25 menit sedangkan konsentrasi ekstrak daun 100% membutuhkan waktu 3 jam 46 menit. Pengaruh ekstrak biji dan daun mimba terbawa sampai kegenerasi kedua, sehingga mempengaruhi pertumbuhan dan perkembangan larva, pupa, imago, dan juga jumlah telur serta daya tetasnya.   Kata kunci : biji mimba, daun mimba, ulat grayak

The purpose of this study was to determine the effect of branch pruning and tuber weight on the growth and yield of potato. The research was carried out from April to July 2021 in the Mberas Hamlet, Tukul Village, Sumber District, Probolinggo Regency. This research was conducted using a factorial randomized block design method with two factors. The first factor was pruning secondary branches which consisted of 4 treatment levels. The second factor was the weight of the seed tubers which consisted of 3 treatment levels. Variable observations consisted of main plant height, number of main stems, number of leaves, number of cassava planted, weight of tubers planted, weight of wet stover, dry stover per plant, production per hectare.  Data will be analyzed by means of the F test at the 5% level, if it shows significantly different results it will be followed by 5% BNT test for the single treatment and Ducan's multiple range test or DMRT at the 5% level for the interaction treatment. The conclusions of this study were P3 pruning treatment  had a very significant effect on plant height parameters. Treatment of B3 seed tuber weight had a very significant effect on plant height parameters, number of stems main, number of leaves, number of tubers planted, weight of tubers planted, dry and wet stover. There was an interaction between the pruning treatment of six branches and the weight of the seed tubers of 40-49 g on the parameters of plant height aged 14.21 and 28 DAP

The purpose of this study was to determine the growth response and yield of pagoda mustard (Brassica narinosa) due to the concentration and time interval for applying liquid bokashi to rice washing water. The research was conducted from December 2019 to February 2020 in Lumbang Village, Lumbang District, Probolinggo Regency. This study used a factorial randomized block design method with two factors, namely concentration and time interval for giving liquid bokashi rice washing water 3 times. The treatment consisted of 2 factors. The first factor is the concentration of liquid bokashi rice washing water (K), namely: K0 = 0% (control/without giving liquid bokashi. The second factor is the time interval for giving liquid bokashi (L). Observation variables consist of plant height (cm), number of leaves (fruit), leaf area (cm2), wet stover weight (g), dry stover weight (g), root length (cm), In this study using a linear model. Data will be analyzed by means of the F test, If the factor variance If there is a significant effect on the interaction, it is tested with 5% DMRT. The conclusions of this study are 1). The concentration of liquid bokashi had a significant effect on the parameters of plant height, number of leaves, leaf area, wet stover weight, dry stover weight and root length, 2). The time interval for bokashi administration had no significant effect on all observation parameters, 3). administration of liquid bokashi and time interval of administration on the growth and yield of pagoda mustard in almost all observed parameters.

Limbah air cucian beras yang dihasilkan sebuah keluarga dapat menghasilkan setidaknya 1 liter setiap harinya. Limbah air cucian air beras tersebut jika difermentasi, limbah tersebut memiliki kandungan bakteri serta unsur hara N, P, K serta Mg yang bermanfaat bagi tanaman. Ibu-ibu PKK Desa Bulang Kecamatan Gending merupakan ibu-ibu yang memang menyukai tanaman serta menaman tanaman di sekitar halaman rumah. Pengetahuan dan pemanfaatan penggunaan limbah cucian beras sangat minim. Untuk itu pada kegiatan pengabdian masyarakat dilakukan sosialisasi dan pelatihan pembuatan pupuk organik cair berbahan baku air cucian beras. Kegiatan pengabdian masyarakat ini diikuti oleh ibu-ibu PKK desa bulang Kecamatan Gending sejumlah 20 peserta. Pada pelaksanaanya dilakukan tiga sesi meliputi sesi sosialisasi, pelatihan dan pendampingan. Pengabdian memberikan dampak adanya peningkatan pengetahuan ibu-ibu PKK sebesar 70% dan keahlian juga meningkat sebesar 30 %. Increasing Entrepreneurial Spirit Through Training On The Use of Rice Washing Water POC  Waste rice washing water produced by a family can produce at least 1 liter every day. The waste water washing rice water if fermented, the waste contains bacteria and nutrients N, P, K and Mg which are beneficial to plants. PKK mothers in Bulang Village, Gending District, are mothers who really like plants and plant plants around the yard. Knowledge and utilization of the use of rice laundry waste is minimal. For this reason, in community service activities, socialization and training on making liquid organic fertilizer made from rice washing water are carried out. This community service activity was attended by PKK mothers in Bulang Village, Gending District, a total of 20 participants. In its implementation, three sessions were carried out including socialization sessions, training and mentoring. Service has an impact on increasing the knowledge of PKK mothers by 70% and expertise also increased by 30%.