Heat stress is one of the production constraints for tomato (Solanum lycopersicum L.) due to unfavorable, above optimum temperatures. This research was undertaken to evaluate growth and fruit yield of tomato genotypes under three contrasting growing conditions (i.e., optimal temperature in field-, high temperature in field- and high temperature in greenhouse conditions) to determine their relative heat tolerance. Eleven tomato genotypes, including two local check varieties, were evaluated, and data on growth and yield were measured and analyzed. The interactions between the genotypes and growing conditions for all yield traits were significant. In general, the performance of tomato under optimal temperature field conditions was better than under high temperature field- and greenhouse conditions. Genotypes CLN1621L, CLN2026D, CLN3212C, and KK1 had consistently greater fruit yield per plant in all growing conditions. Although the local genotype, Neang Tamm, had lower yield under optimal conditions, it performed moderately well under high temperature field- and high temperature greenhouse conditions, and yield decrease under high temperature condition was minimal. Genotype CLN1621L had stable fruit setting compared to other genotypes under high temperature conditions. Since fruit setting and yield are important traits for heat tolerance, genotypes CLN1621L and Neang Tamm are potential candidates for breeding programs focused on improved yield and heat stress tolerance.
Locally-available materials could be used to address soil fertility constraints. Vermicomposting is a promising technology where various organic materials are converted into processed compost by earthworms. This study evaluated local feed sources and their potential for vermicompost production. The vermicompost production was carried out in the plastic container under a roofed and net-sided production house. The plot design was laid out in Completely Randomized Design (CRD) with nine replications. Vermiculture feedstock treatments were cow manure (CM) and three cow manure and alternative feed stock treatments (75:25 on a dry basis) that included water hyacinth (WH), used coffee grounds (coffee), or Azolla. The results showed that cow manure combined with Azolla tended to produce more vermicompost after four weeks, but post-harvest earthworm weight was lower. The cow manure treatment produced higher earthworm weights. However, the earthworm population was not influenced by feed sources. The chemical characteristics of vermicompost were not different among feed source ratios or combination. A comparison of the feed stock material before and after vermiculture composting show that EC and total P increased in the compost, total K, organic C and the C:N ratio decreased, but pH and Total N remained constant.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.