Performance of hybrid tomato (Solanum lycopersicum) varieties to different effective microorganism (EM) derivative combinations / by Gina Romilla Rosarda

Thesis (Doctor of Philosophy in Agriculture--Crop Science) Cavite State University

Includes bibliographical references.

Graduate Studies Open Learning College (GSOLC)

ROSARDA, GINA R. Performance of Hybrid Tomato (Solanum lycopersicum) Varieties to Different Effective Microorganism (EM) Derivative Combinations. PhD Dissertation. Doctor of Philosophy in Agriculture Cavite State University, Indang, Cavite. November 2015. Adviser: Dr. Teddy F. Tepora.

This study was conducted to determine the effect of different proportions of EM derivatives on two hybrid tomato varieties.

A 2x4 factorial design arranged in CRD was used to analyze the effect of different EM derivative combinations on two hybrid tomato varieties. Two factors were considered: variety of two hybrid tomatoes and proportion of EM derivative combinations. Treatments used include proportions of EM derivatives, fish amino acids (FAA), fermented plant juice (FPJ), fermented fruit juice (FFJ): Proportion 0 (control), Proportion 1 (70%+20%+10%), Proportion 2 (60%+30%+10%) and Proportion 3 (50%+40%+ 10%) with variation in application at different growth stages. Constant foliar application of oriental herbal nutrients (OHN) and water soluble calcium phosphate (Caphas) 0.15:16 li dilution was done.

Growth and yield responses of two varieties of tomato with different proportions of EM derivative combinations were evaluated in terms of plant height, number of leaves, days to flower, days to fruit initiation, days to fruit maturity, number of flowers per plai:t, number of clusters per plant, number of fruits, average weight and average yield per” plant. Fruit quality was evaluated in terms of weights and grades.

Postharvest properties of tomato were evaluated using visual quality rating based on peel color changes and percentage weight loss. Insect infestation and disease incidence were also assessed. Cost and return in tomato production with respective treatment was analyzed.

Presence of macro elements such as nitrogen, phosphorus, potassium and microelements like zinc, manganese, copper and iron were traced in different EM derivatives.

Significant effects on plant height and number of leaves were observed with . different proportions of EM derivative combinations at 35 and 42 DAT.

Number of flower per cluster, number of days to flower, days to fruit initiation . and days to fruit maturity, likewise were not affected by different proportions of E derivative combinations. However, significant effect on the number of flower cluster per plant at 16, 31 and 40 DAF was observed.

Moderate infestation of whitefly during vegetative stage and light infestation of leaf miner were observed in two varieties of tomato. Moderate incidence of bacterial wilt and blossom end rot in tomato varieties under control were recorded.

EM derivative combinations had no significant effect on the average number of fruit, average weight, and average yield and fruit size of the two tomato varieties.

Significant effect of different EM derivative combinations on visual quality rating at 60 and 120 DAH and percentage weight loss rating at 60, 90 and 150 DAH were
observed.

Application of Proportion 2 (60%+30%+10%) in Diamante max gave the highest yield and net income as revealed by the cost and return analyses for the two varieties of tomato.

Submitted copy to the University Library. 08-01-2017 T-6822