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Estimation of leaf area in two abaca (Musa textiles Nee) varieties by regression methods

Volume 23 No. 1 January - June 2001 / By

Ricardo A. Esplanada Jr. and Romel B. Armecin ABSTRACT A rapid, non-destructive and precise method for leaf area (LA) determination in two varieties (Inosa and Laylay) of abaca (Musa textiles Nee) was developed from linear measurements. Combining both length (L) and width (W) in the model could predict accurately the actual leaf area of abaca. …

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Evaluation of stability in sweetpotato using different methods

Volume 23 No. 1 January - June 2001 / By

S.K. Naskar and Archana Mukherjee ABSTRACT The stability in sweetpotato (Ipomea batatas L.) was evaluated using the methods of Eberhart and Russel (1966), Shukla (1972.) and Francis and Kannenberg (1978). Eight sweetpotato lines along with a check local cultivar were grown for three years in eight environments across Orissa. India. Variances due to genotypes, environments, …

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Effect of NaCl on axillary shoot proliferation in sweetpotato

Volume 23 No. 1 January - June 2001 / By

Archana Mukherjee ABSTRACT Micropropagation through axillary shoot proliferation is a simple technique which ensures genetic stability of the propagules. To enhance the rate of multiplication, different doses of sucrose and NaC1 were used for axillary shoot proliferation in sweetpotato. Murashige and Skoog’s basal medium supplemented with growth regulators [NA A (0.5 mg/l) + BA (1.0 …

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Efficacy of selected biological products on broad mite (Polyphagotarsonemus latus Banks) in sweet pepper

Volume 39 Supplement B 2017 / By

Reny G. Gerona1*, Jesusa C. Jimenez1, Esmer V. Avelino1, Valeriana P. Justo2, Raffy Danggoy3, Melba B. Agosto1, Bernardita I. Lauro1, Melody G. Atanoza1, Sandra McDougall4 and Valerie Draper4 ABSTRACT Four studies were conducted to evaluate the efficacy of potential alternatives to miticides against the broad mite (Polyphagotarsonemus latus Banks) population on sweet peppers grown under …

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Biocontrol potential of Bacillus thuringiensis var. aizawai and Metarhizium anisopliae SPW isolate against insect pests of pechay and lettuce grown under protected and open field cultivation

Volume 39 Supplement B 2017 / By

Reny G. Gerona1* and Bernardita I. Lauro1 ABSTRACT Insect pests are one of the constraints in lettuce and pechay production. Although synthetic chemical insecticides are widely used, organic growers are interested in using alternative options which have no toxic residues. This study aimed to evaluate the biocontrol potential of Bacillus thuringiensis var. aizawai (Bta) and …

Biocontrol potential of Bacillus thuringiensis var. aizawai and Metarhizium anisopliae SPW isolate against insect pests of pechay and lettuce grown under protected and open field cultivation Read More »

Efficacy of wood vinegars for the control of Sclerotium rolfsii affecting tomato (Solanum lycopersicum L.)

Volume 39 Supplement B 2017 / By

Lucia M. Borines1*, Merlita M. de la Cruz1, Fely R. Cañete1, Zenaida C. Gonzaga1, Othello Capuno1, Gordon Rogers2, Sandra McDougall3 and Len Tesoriero3 ABSTRACT Wood vinegar is claimed to be pesticidal by several researchers but its bioefficacy data on specific pests are lacking. This study evaluated 17 wood vinegars against S. rolfsii causing sclerotium wilt …

Efficacy of wood vinegars for the control of Sclerotium rolfsii affecting tomato (Solanum lycopersicum L.) Read More »

Managing major diseases of tomato (Solanum lycopersicum L.) using resistance elicitors and protected cultivation

Volume 39 Supplement B 2017 / By

Lucia M. Borines1*, Rezel M. Sagarino, Fely R. Cañete1, Elvira L. Oclarit1, Zenaida C. Gonzaga2, Sandra McDougall and Len Tesoriero2 ABSTRACT Diseases, particularly bacterial wilt caused by Ralstonia solanacearum is a major constraint to vegetable production. Protected cultivation has been proven effective in reducing disease incidence but additional control measures need to be integrated in …

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Inventory and incidence of plant diseases affecting vegetables in selected areas in the Visayas and Mindanao

Volume 39 Supplement B 2017 / By

Lucia M. Borines1*, Joy Adeline C. Nuñez, Rezel M. Sagarino1,Fely R. Cañete1, Elvira L. Oclarit1, Reny G. Gerona1, Sandra McDougall2 and Len Tesoriero2 ABSTRACT The identification of different vegetable diseases in a particular area is key to managing them. An inventory of diseases affecting important vegetables was conducted in selected areas in the Visayas, and …

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Survey on farm practices of small-scale vegetable farmers in the Southern Philippines

Volume 39 Supplement B 2017 / By

Moises Neil V. Seriño1*, Glorybeth Castillo and Jessa Ruales ABSTRACT This study aims to survey the farm practices of small scale vegetable farmers, evaluate gender roles in farming and assess the changes in farm income of farmers engaged in integrated crop management. The respondents of the study include randomly selected small-scale vegetable farmers trained under …

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Supporting Struggling Grade 8 Science Students’ Motivation, Participation and Performance through Peer-Tutoring Approach

Volume 39 No. 1 January - June 2017 / By

Joy A. Bellen1 and Amalia B. Jomoc2 ABSTRACT Research shows that cognitive and affective abilities among science students can be enhanced using peer tutoring approach. However, peer tutoring approach remains an underutilized peer support (Bond & Castagnera 2006). This study determined the effects of peer tutoring approach in motivation, participation and academic performance of grade …

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