Manuel K. Palomar, E.B. Barsalote and H.S.V. Colis ABSTRACT Sweetpotato feathery mottle virus (SPFMV) disease was observed in the sweetpotato fields of the Visayas State College of Agriculture and adjacent barangays with infection ranging from 2.8 to 21.0%. Likewise, in the the germplasm collection of the Philippine Root Crop Research and Training Center, 21.0% of …
Konrad Martin and Joachim Sauerborn ABSTRACT In the province of Ifugao, Northern Luzon, Philippines rice cultivation on irrigated terraces has been practiced since centuries ago. The traditional system is characterized by one harvest per year from permanently flooded fields.The macrophyte Najas graminea Del. is the most abundant submerged wild plant in this agroecosystem. It is …
An aquatic wild plant as a keystone species in a traditional Philippine rice growing system: its agroecological implications Read More »
P.J. Raju and N.B. Krishnamurthy ABSTRACT Formation of an adult organism from a single fertilized cell is the result of selective differential gene expression, operating on a constant pool of genetic information. The differential gene action can be viewed by the differential synthesis and activity of certain enzymes. The variation patterns in two enzyme systems …
Ontogenetic Differentiation of Alpha and Beta Esterases in Univoltine, Bivoltine and Trimoulter Races of Silkworm Bombyx mori L. Read More »
Lemuel M. Diamante ABSTRACT The moisture adsorption isotherms of tapahan dried copra were determined at 22, 30 and 38°C. The isotherm of copra at different temperatures were of type III according to the BET classification. Equilibrium moisture content of copra at a given water activity increased as temperature decreased. The Henderson equation gave better fit …
Moisture Adsorption Isotherms of Copra at Different Temperature Read More »
Fe M. Gabunada, Dolores L. Alcober and Nestor O. Morales ABSTRACT This study was conducted to make comparative evaluations on the socioeconomic aspects of two methods of processing paddy rice, namely: hand pounding and micro rice mill processing. The micro rice mill designed by the International Rice Research Institute (IRRI) was introduced to women’s associations …
Marilyn Z. Oracion ABSTRACT The somatic chromosome numbers (2n) in seven sweetpotato cultivars, four diploid (2x) Ipomoea species, tetraploid (4x) and hexaploid (6x) I. trifida strains, and twenty selected hybrids between sweetpotato and 6x l. Trifida were determined using a Fealgen-acetocarmine squash technique designed for Ipomoea chromosomes. The data revealed that euploid counts of 2n=30, …
Manuel K. Palomar, R.M Gapasin and H.S.I Vega-Colis ABSTRACT Surveys in different localities of Bohol, Cebu, Leyte and Samar revealed that 13 virus-like diseases infect cucurbits, namely: ampalaya and patola abnormality (APA), ampalaya leaf curl (ALC), ampalaya little leaf (ALL), ampalaya mosaic (AM), chayote little leaf (CLL), cucumber mosaic (CM), patola little leaf (PLL), squash …
P.J. Raju, Mahadevappa, D. Guruswamy, R. Raghuraman and S.B. Dandin ABSTRACT Economics of egg production is vital for grainages since it is a commercial preposition which necessitates recovery of maximum number of laying with high fecundity. Attempts have been made to increase reproductive rate by multiple mating in Pure Mysore (PM), a multivoltine race and …
R.S. Umakanth and N.B. Krishnamurthy ABSTRACT Isozymes of α- and β-esterases were analyzed in four selected races of univoltine (B38P), bivoltine (NB18 and SF19) and multivoltine (C. nichi) by employing polyacrylamide gel electrophoretic technique (PAGE). Racial differences as a reflection of ontogenic differentiation of the multi-banded system in the races under study were identified, although …
E.E. Sudaria and R.V. Piedraverde ABSTRACT A survey on the farmers’ direct-type tapahan copra dryer was conducted to monitor the configuration of the dryer, depth of heat source, fuel consumption and time of drying. Three copra dryers with square, parabolic, and rectangular pit configurations were constructed and evaluated at varying depths of heat source of …
Improvement of the farmers’ direct-type copra dryer Read More »