Yield Of Tomato Cultivars Research Articles

Usage of treated greywater as an alternative irrigation source for tomatoes cultivation

AbstractOptimizing water reuse is an important issue in the context of water scarcity and low water quality. Greywater would provide more sustainable water supply, once using appropriate treatment. This study aimed to appraise the efficacy of treated greywater (TGW) use on soil and tomato cultivation, in comparison with ground water (GW) use. Greywater (from laundry and tableware) was treated using a wetland mini‐reactor with a horizontal underground flow. Growth, photosynthetic activity, plant water status, osmotic potential and yield of tomato cultivars (Dart and Firenze) were evaluated. Sodium, potassium (analysed by flame photometer) and heavy metals (examined by atomic absorption photometer) were quantified in leaves, stems and roots. Results showed that TGW does not affect soil salinity. The TGW improved plant height and yield, of both cultivars. Although net photosynthesis increased only in Dart whereas Firenze had elevated water potential, less relative water content and photosynthetic water use efficiency suggesting a pronounced water restriction. Also, Firenze had higher Zn2+ and Fe2+ content than Dart indicating less selectivity. Our results imply that greywater treatment had an encouraging potential for soil preservation and tomatoes irrigation. Plant resistance is possibly acquired by ionic balance and photosynthetic capacity. Further studies are desirable to inspect long‐term effects on soil and health.

Variation in morphological attributes and yield of tomato cultivars

A pot experiment was carried out in the grill house of the Department of Seed Science and Technology, Bangladesh Agricultural University (BAU), Mymensingh during the period of mid December 2014 to mid April 2015. The experiment conducted with five treatments (five tomato genotypes) and employed in Completely Randomized Design (CRD) with four replications. Of the five genotypes two were obtained Japan (Pasta and Mimi) and the rest three from Bangladesh Agricultural Research Institute (BARI). Genetic variations appeared for morphological and phenological characters and yield attributes in the five tomato genotypes. Taller plants with higher number of branches were observed in the Japanese genotype (Mimi) while number of days required to initiate flower and fruit initiation and fruit maturity were shorter in BARI tomato 12 and BARI tomato 14. Flower and fruit productions plant-1 was higher in BARI released tomato cultivars, therefore, the tomato yield was also higher in those cultivars.Res. Agric., Livest. Fish.3(2): 287-294, August 2016

Effects of soil application of fly ash on the fusarial wilt on tomato cultivars

A study was carried out in microplots to evaluate the effect of fly ash on the plant growth and yield of tomato cultivars, Pusa Ruby, Pusa Early Dwarf and New Uday, and on wilt disease caused by Fusarium oxysporum f.sp. lycopersici . Fly ash was applied to soil by broadcast or in rows at the rate of 1, 2, 3 and 4 kg ash m-2 in place of inorganic fertilizers. In control plots, NPK (about 40 : 20 : 20 kg acre-1) and compost were added in place of fly ash. Ash application greatly increased the soil contents of P, K, B, Ca, Mg, Mn, Zn, carbonates, bicarbonates and sulphates. Plants grown in the ash-treated plots, especially at 3 or 4 kg dose, showed luxuriant growth and greener foliage, and plant growth and yield of the three cultivars were significantly increased in comparison with the plants grown in plots without fly ash. The wilt fungus, F. oxysporum f.sp. lycopersici at the inoculum level of 2 g plant-1 caused significant suppression of growth and yield in all three cultivars. Application of fly ash, however, checked the suppressive effect of the fungus, leading to a significant increase in the considered variables compared with the inoculated control. Soil population of the fungus (colony-forming units g soil-1) gradually decreased with an increase in ash dose. Row application was found to be relatively more effective in enhancing the yield of tomato cultivars and suppressing the wilt disease. The greatest increase in the yield of fungus inoculated and uninoculated plants due to broadcast or row application at 3 or 4 kg ash m-2 was recorded in tomato cv. Pusa Ruby (39 - 61 and 9 - 24%), followed by Pusa Early Dwarf (31 - 61 and 17 - 34%) and New Uday (21 - 35 and 4 - 22%).

Relationship between lodging, morphological characters and yield of tomato cultivars

Experiments were carried out in the early and late seasons in the rain-forest zone of Nigeria to find out the relationship between lodging, morphological characters and yield of tomato. Lodging was associated with plant height, leaf area, number of branches/plant and fruit yield. Lodging was more severe in the wet early season than in the late season.