March 2023 - Vol. 106 No. 1
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March 2023 – Vol. 106 No. 1
Mussaenda ‘Dolores A. Ramirez’ is a hybrid variety named in honor of the National Scientist Dolores A. Ramirez for her outstanding contributions to the field of genetics. It is an outstanding selection with profuse inflorescence from a cross between M. ‘Maria Makiling’ x M. ‘Doña Trining’. Even during the dormant months, this mussaenda hybrid continues to bloom and does not tend to droop at the peak of flowering. The mussaenda hybrid variety is a part of the Outstanding Women Breeder Series from the UPLB. {Photograph courtesy of Ms. Gerlie P. Antesco, Fruits, Ornamental and Medicinal Crops Section, Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Banos)

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Biology of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) on Rice and Different Corn Varieties
Anthony S. Agravante, Karen B. Alviar, Analiza Henedina M. Ramirez, and Sheryl A. Yap
Received: October 06, 2021/ Revised: October 10, 2022/ Accepted: October 26, 2022
Rice and corn are one of most important crops in the Philippines. Several insect pests contribute to the losses and low yield of these crops. The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) was reported recently to cause economic damage to corn. Also, this insect consists of two genetically differentiated strains, the corn strain and the rice strain. This study was conducted under laboratory conditions to evaluate the biological parameters of FAW on rice and different corn varieties. Newly hatched larvae were fed open pollinated variety (OPV), traditional variety, Macho F1 (hybrid), NK 6410 (genetically modified organism), and rice variety, RC 226. Duration of larva, prepupal,...
Rice and corn are one of most important crops in the Philippines. Several insect pests contribute to the losses and low yield of these crops. The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) was reported recently to cause economic damage to corn. Also, this insect consists of two genetically differentiated strains, the corn strain and the rice strain. This study was conducted under laboratory conditions to evaluate the biological parameters of FAW on rice and different corn varieti...
Susceptibility of Pre-adult Biological Stages of Mythimna separata (Walker) (Lepidoptera: Noctuidae) to Three Entomopathogenic Fungi (Hypocreales)
Melissa P. Montecalvo and Marcela M. Navasero
Received: August 16, 2022/ Revised: January 25, 2023/ Accepted: January 26, 2023
Armyworms are polyphagous insect pests of agricultural crops. Their population is usually managed below threshold level using insecticides. However, a single control measure is insufficient to attain a sustainable pest management. Hence, this research was conducted to assess the three species of entomopathogenic fungi as potential biological control agents against Mythimna separata (Walker) or paddy armyworm. Dose mortality assays were conducted to determine the pathogenicity of Beauveria bassiana (Bals.) Vuill., Metarhizium anisopliae (Metschn.) Sorokin, and Metarhizium rileyi (Farlow) Kepler, S.A. Rehner and Humber against various biological stages of M. separata including egg, 1st to 6...
Armyworms are polyphagous insect pests of agricultural crops. Their population is usually managed below threshold level using insecticides. However, a single control measure is insufficient to attain a sustainable pest management. Hence, this research was conducted to assess the three species of entomopathogenic fungi as potential biological control agents against Mythimna separata (Walker) or paddy armyworm. Dose mortality assays were conducted to determine the pathogenicity of Beauveria bas...
The Use of Open Data Kit (ODK) in Characterizing the Cacao Industry Sites in Panay Island
Rhea J. Subong, Reynold D. Tan, and Christine Mae D. Hernando
Received: February 28, 2022/ Revised: September 23, 2022/ Accepted: October 5, 2022
Cacao is one of the world’s most valuable export commodities and cash crops. Western Visayas, along with the other regions of the Philippines, has committed to participate in national efforts to strengthen the production capacity of the cacao industry and address prospects and opportunities for the industry growth and development. This paper presents the results of a region-wide study that mapped out and assessed key cacao-producing areas in the Western Visayas, specifically Aklan, Antique, Capiz, and Iloilo. The study sought their current production levels, important agricultural properties of farming areas, production densities, and growth potentials. Geospatial data was generated, anal...
Cacao is one of the world’s most valuable export commodities and cash crops. Western Visayas, along with the other regions of the Philippines, has committed to participate in national efforts to strengthen the production capacity of the cacao industry and address prospects and opportunities for the industry growth and development. This paper presents the results of a region-wide study that mapped out and assessed key cacao-producing areas in the Western Visayas, specifically Aklan, Antique, C...
Evaluation of Some Toxic Trace Elements in Crocus sativus L. and Soil Using Neutron Activation Analysis Technique
Ehsan Taghizadeh Tousi
Received: July 15, 2020/ Revised: November 2, 2022/ Accepted: November 24, 2022
Neutron activation analysis was used in this research to measure the concentrations of aluminum (Al), bromine (Br), chlorine (Cl), mercury (Hg), arsenic (As), and thorium (Th) in soil and saffron plants as well as their contamination, enrichment, and translocation rates. The edible part of the saffron showed a higher Hg concentration than the WHO/FAO-permitted level in the urban area. The soil was not intoxicated and contaminated by Al, As, and Th except in the urban areas, which were slightly polluted by As. The calculated contamination degree and pollution load index indicated that the soil was almost uncontaminated. The enrichment factors (EF) showed minimal enrichment levels of Al and...
Neutron activation analysis was used in this research to measure the concentrations of aluminum (Al), bromine (Br), chlorine (Cl), mercury (Hg), arsenic (As), and thorium (Th) in soil and saffron plants as well as their contamination, enrichment, and translocation rates. The edible part of the saffron showed a higher Hg concentration than the WHO/FAO-permitted level in the urban area. The soil was not intoxicated and contaminated by Al, As, and Th except in the urban areas, which were slightl...
Spray Characterization of an Unmanned Aerial Vehicle for Agricultural Spraying
Eray Önler, Hasan Berk Özyurt, Mehmet Şener, Sezen Arat, Bülent Eker, and İlker Hüseyin Çelen
Received: January 14, 2022/ Revised: October 10, 2022/ Accepted: November 20, 2022
Sustainability and higher efficiency in crop production are possible with the use of new technologies. The use of unmanned aerial vehicles brings many advantages both in terms of monitoring agricultural areas and pesticide applications. This technology allows us to detect diseases and damages in an early manner and apply them in areas that are not accessible by conventional sprayers. However, a lack of knowledge on how to use UAVs and what parameters need to be considered prevent the widespread use of drone technology in agriculture. This study established parameters for spraying with clean water using a DJI Agras 14 MG-1P (RTK) Unmanned Aerial Vehicle. Droplet distribution and droplet an...
Sustainability and higher efficiency in crop production are possible with the use of new technologies. The use of unmanned aerial vehicles brings many advantages both in terms of monitoring agricultural areas and pesticide applications. This technology allows us to detect diseases and damages in an early manner and apply them in areas that are not accessible by conventional sprayers. However, a lack of knowledge on how to use UAVs and what parameters need to be considered prevent the widespre...

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