scholarly journals Mixture of 2-Phenylethanol and n-Valeric Acid, a New Attractant for the Onion and Seed-Corn Flies, Hylemya antiqua and H. Platura : Diptera : Anthomyiidae

1984 ◽  
Vol 19 (4) ◽  
pp. 448-455 ◽  
Author(s):  
Yukio ISHIKAWA ◽  
Yoshiharu MATSUMOTO ◽  
Masaaki TSUTSUMI ◽  
Yasushi MITSUI
Keyword(s):  
Valeric Acid ◽  
Hylemya Antiqua ◽  
Seed Corn

scholarly journals Mass-rearing of the Onion and Seed-corn Flies, Hylemya antiqua and H. platura (Diptera : Anthomyiidae), on an Artificial Diet with Antibiotics

1983 ◽  
Vol 18 (1) ◽  
pp. 62-69 ◽  
Author(s):  
Yukio ISHIKAWA ◽  
Atsushi MOCHIZUKI ◽  
Toshiaki IKESHOJI ◽  
Yoshiharu MATSUMOTO
Keyword(s):  
Artificial Diet ◽  
Mass Rearing ◽  
Hylemya Antiqua ◽  
Seed Corn

scholarly journals 2-Phenylethanol : An Attractant for the Onion and Seed-Corn Flies, Hylemya antiqua and H. platura (Diptera : Anthomyiidae)

1983 ◽  
Vol 18 (2) ◽  
pp. 270-277 ◽  
Author(s):  
Yukio ISHIKAWA ◽  
Toshiaki IKESHOJI ◽  
Yoshiharu MATSUMOTO ◽  
Masaaki TSUTSUMI ◽  
Yasushi MITSUI
Keyword(s):  
Hylemya Antiqua ◽  
Seed Corn

scholarly journals Controlled Release Formulation of Attractant for the Onion and Seed-Corn Flies, Hylemya antiqua and H. platura : Diptera : Anthomyiidae

1987 ◽  
Vol 22 (3) ◽  
pp. 303-309 ◽  
Author(s):  
Yukio ISHIKAWA ◽  
Yoshiharu MATSUMOTO ◽  
Masaaki TSUTSUMI ◽  
Yasushi MITSUI ◽  
Kazuhiro YAMASHITA ◽  
...  
Keyword(s):  
Controlled Release ◽  
Release Formulation ◽  
Hylemya Antiqua ◽  
Controlled Release Formulation ◽  
Seed Corn

PERKECAMBAHAN BENIH JAGUNG (Zea mays L.) PADA BERBAGAI UMUR PANEN BENIH DAN KELEMBABAN MEDIA TANAM

EUGENIA ◽  
2012 ◽  
Vol 18 (3) ◽  
Author(s):  
Vilma Victa Rikumahu ◽  
Jantje Pongoh ◽  
J. M. Paulus
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Single Factor ◽  
Hard Seed ◽  
Corn Seed ◽  
Seed Corn ◽  
North Sulawesi ◽  
Seed Harvest ◽  
Two Factors ◽  
Dead Shoot

ABSTRACT Research has been implemented as of July 2012, in the  BPSB Laboratory  of North Sulawesi Province i.e.: 1) to test the seed lacking in vigour during the Random Complete Design with three treatments of the various harvest ages, i.e. U1 (90 dasy), U2 (100 days) and U3 (110 days) treatments repeated four times; 2) in the greenhouse to see the amount of the normal, sprouts abnormal, seeds, hard seed and dead, shoot root ratio by using the Random Completed Design with two factors, respectively are : factorial in complete factors of the first different age harvest U1 (90 days), U2 (100 days) and U3 (110 days), the second factor granting of the water with different capacity P1 (3600 ml), P2 (2700 ml), P3 (1800 ml) and P4 (900 ml). Data analysis were found by the various analysis, however if there are different results, it would continue on the Smallest Significant Test. The results showed that, Electric Power Conductivity (EPC) affected by the age of harvest seed corn. The highest EPC at the harvest ages of 90 days and the lowest at 100 days and 110 days. It would be shown that the great value of EPC, the smallest amount of germination. There is no interaction between the age of abnormal seeds, hard seed die, shoot root ratio and high sprouts, but single factor treatment of harvest age and media planting humidity were significantly effected toward sprout normal, abnormal seed, hard seed die, shoot root ratio and high sprouts. Keywords : corn seed, harvest ages, humidity ABSTRAK   Penelitian dilaksanakan sejak bulan Juli 2012, penelitian pertama di Laboratorium Balai Penelitian dan Sertifikasi Benih (BPSB) Provinsi Sulawesi Utara, untuk menguji vigor benih menggunakan Rancangan Acak Lengkap dengan tiga perlakuan umur panen yang berbeda: U1 (90 Hari), U2 (100 Hari) dan U3 (110 hari) perlakuan diulang empat kali. Penelitian kedua di Rumah Kaca untuk melihat jumlah kecambah normal, abnormal, benih keras,benih mati dan nisbah pupus akar  menggunakan Rancangan Acak Lengkap disusun secara faktorial  dengan  2 faktor  masing-masing adalah : faktor pertama : Umur Panen yang berbeda, U1 (90 Hari), U2 (100 Hari) dan U3 (110 hari). faktor kedua pemberian air dengan kapasitas yang berbeda, P1 (3600 ml), P2 (2700 ml), P3 (1800 ml) dan P4 (900 ml). Data yang diperoleh menggunakan analisa ragam dan jika terdapat perbedaan perlakuan dilanjutkan dengan uji Beda Nyata Terkecil  (BNT). Hasil penelitian yang didapat adalah; Daya hantar listrik (DHL) dipengaruhi oleh umur panen benih jagung, DHL tertinggi pada umur panen 90 hari dan yang terendah umur panen 100 dan 110 hari. Hal ini menunjukan bahwa semakin besar nilai DHL semakin kecil jumlah perkecambahan. Tidak terdapat interaksi antara umur panen benih dan kelembaban media tanam terhadap jumlah kecambah normal, abnormal, benih keras, benih mati, nisbah pupus akar dan tinggi kecambah tetapi secara tunggal faktor perlakuan umur panen dan kelembaban media tanam berpengaruh nyata terhadap kecambah normal, abnormal, benih keras, benih mati, nisbah pupus akar dan tinggi kecambah. Kata kunci : benih jagung, umur panen, kelembaban

Injury to Seed Corn from Vapors of TCA2

1951 ◽  
Vol 43 (10) ◽  
pp. 513-514
Author(s):  
L. M. Josephson
Keyword(s):  
Seed Corn

scholarly journals Effects of 5-Ammonium Valeric Acid Iodide as Additive on Methyl Ammonium Lead Iodide Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2512
Author(s):  
Daming Zheng ◽  
Changheng Tong ◽  
Tao Zhu ◽  
Yaoguang Rong ◽  
Thierry Pauporté
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Single Crystal Silicon ◽  
Mesoporous Structure ◽  
Valeric Acid ◽  
Electrical Impedance Spectroscopy ◽  
Lead Iodide ◽  
Crystal Silicon ◽  
Time Resolved ◽  
Hole Transporting

During the past decade, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) has risen rapidly, and it now approaches the record for single crystal silicon solar cells. However, these devices still suffer from a problem of stability. To improve PSC stability, two approaches have been notably developed: the use of additives and/or post-treatments that can strengthen perovskite structures and the use of a nontypical architecture where three mesoporous layers, including a porous carbon backcontact without hole transporting layer, are employed. This paper focuses on 5-ammonium valeric acid iodide (5-AVAI or AVA) as an additive in methylammonium lead iodide (MAPI). By combining scanning electron microscopy (SEM), X-ray diffraction (XRD), time-resolved photoluminescence (TRPL), current–voltage measurements, ideality factor determination, and in-depth electrical impedance spectroscopy (EIS) investigations on various layers stacks structures, we discriminated the effects of a mesoscopic scaffold and an AVA additive. The AVA additive was found to decrease the bulk defects in perovskite (PVK) and boost the PVK resistance to moisture. The triple mesoporous structure was detrimental for the defects, but it improved the stability against humidity. On standard architecture, the PCE is 16.9% with the AVA additive instead of 18.1% for the control. A high stability of TiO2/ZrO2/carbon/perovskite cells was found due to both AVA and the protection by the all-inorganic scaffold. These cells achieved a PCE of 14.4% in the present work.

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