Ammar Askarieh (1)*, Nsreen Dib(1), Alisar Shaabow(1),Amal Haj Hassan(1), Omar Hamoudi(1),Ammar Abbas(1), Soulaf Haloum(1) and Rami Adraa(1)
(1). General Commission for Scientific Agriculture Research, Syria.
(*Corresponding author: Dr. Ammar Askarieh . E-Mail: ammar.askarieh89@gmail.com, Mob: 0934373387).
Received: 19/06/2023 Accepted: 19/12/2023
Abstract:
The research was carried out at the Agricultural Scientific Research Center in Lattakia, within a 400 m2 greenhouse planted with lettuce, during the fall of 2022, with the aim of studying the effect of three types of compost prepared from pruning residues of citrus trees (Cc), olive trees (Oc) and greenhouse residues (Tc) on some vegetative and productivity parameters of lettuce grown under greenhouse conditions. Where the experiment included four treatments (control: soil without fertilization – compost prepared from the waste of pruning citrus trees (Cc) – compost prepared from the waste of pruning olive trees (Oc) – compost prepared from the waste of plants grown in protected houses (cucumbers and tomatoes) (Tc)) The experiment was distributed according to a randomized complete block design with four replicates for each treatment. The results were analyzed statistically using Genestate12 statistical analysis software, ANOVA analysis of variance test, and the LSD value was calculated at a significant level of 5%. The results showed that all treatments contributed to increasing the percentage of organic matter in the soil compared to the control, which helps to improve the spread of roots, and also contributed to the availability of nutrients needed for plant growth in a greater way, which contributes to increasing plant productivity, and the results also indicated that all treatments contributed to improving plant weight Whereas, the compost treatment (Tc) was the best among the treatments in increasing the stem weight (77.33 g) and the least in the compost treatment (Cc) (62.33 g). However, none of the treatments contributed to increasing the root weight without significant differences between the treatments and the control. The results also show the role of compost in increasing the weight of the pulp with significant differences between the treatments, as the highest pulp weight was recorded in the compost treatment (Cc) (172g), followed by the compost treatment (Tc) (165.3g) and the lowest was in the compost treatment (Oc) (137.3g) compared to control (145g). The results also show the role of treatment with different types of organic fertilizers in improving the representative surface area and improving the productive characteristics compared to the control. The highest productivity per unit area was recorded in (Cc) treatment (4.375 kg/m2) and the lowest in (Oc) treatment (3.465 kg/m2), with significant differences between the treatments. The treatment with different types of organic fertilizers also contributed to improving some qualitative characteristics of lettuce without significant differences between the treatments and the control. This confirms the role of organic additions to plant residues as an effective tool in maintaining and sustaining agriculture, increasing soil organic matter, improving soil fertility and increasing agricultural crop productivity.
Keywords: lettuce, organic fertilization, compost, plant waste, yield.
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