Two field experiments were carried out during summer seasons of 2017 and 2018 at the Experimental Farm, Faculty of Environmental Agricultural Sciences, Arish University, Egypt to study the effect of three levels of irrigation (100, 80 and 60% of irrigation water requirement) and three types of soil amendments (without, gypsum and pressed olive cake) and their combinations on growth and yield of sweet pepper (Capsicum annuum L. cv. "Top Star") crop under El-Arish region conditions. Plants were irrigated using drip irrigation system. The highest values of all studied traits; viz., vegetative growth, plant fresh and dry weights, yield of grad A and B and total yield were recorded with using 100 % followed by 80% irrigation level both + pressed olive cake that followed by applying 80% irrigation level + gypsum as soil amendment, respectively in both growing seasons. While the lowest values were obtained by application 60% of water requirements with or without using soil amendments. Define et al. (2000) reported thatCapsicum annum L. is one of the most susceptible crops to water stress because of wide transpiring leaf surface and elevated stomatal openings and yet relatively copious amounts of water may be undesirable in terms of resultant fruit yield and quality. The quality of paprika therefore depends on a moisture regime. Also, Palada and O'Keefe (2001) investigated the response of hot pepper cultivars to levels of drip irrigation in the Virgin Islands and observed increasing yield trends with increasing amounts of irrigation water. In addition, Shaozhong et al. (2001), Ismail et al. (2002) and Dorji et al. (2005) found that under water stress conditions, there were reductions in fruit size, number of fruits and fresh fruit yield.
This study was carried out during summer season of 2017 and 2018 at the Experimental Farm, Faculty of Environmental Agricultural Sciences, Arish University, Egypt to investigate the effects of water irrigation levels and soil amendments on content of N, P and K in leaves and fruits as well as fruit quality of sweet pepper plant. Sweet pepper cv. "Top star" was subjected to three irrigation levels (100,80 and 60% of irrigation requirements) and three soil amendments; i.e., control (without amendment), gypsum and pressed olive cake and their interactions in a factorial experiment using the randomized complete block design with three replications. Drip irrigation system was used and soil texture was sandy loam. The obtained results indicated that the highest contents of N, P and Kin leaves and fruit were recorded with applying 100% irrigation level + pressed olive cake as soil amendment followed by 80% irrigation levels + pressed olive cake in both seasons. All fruit quality studied traits; viz., fruit length, fruit diameter, fruit wall thickness, hardness, TSS%, and vitamin C content had their highest values with applying 100% of irrigation water + pressed olive cake as a soil amendment in both seasons, except length/diameter (L/D) ratio and pH values, where the highest values of fruit L/D ratio were recorded with applying 80% of irrigation water level + pressed olive cake in both seasons, while the highest values of fruit pH were recorded with applying 80% of irrigation water + pressed olive cake without significant difference than the same treatment of soil amendment with 100% or 60% irrigation water level in both seasons.
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.