Acclimating leaf celery plant (Apium graveolens) via bottom wet culture for increasing its adaptability to tropical riparian wetland ecosystem

Abstract

Abstract. Lakitan B, Kartika, Susilawati, Wijaya A. 2021. Acclimating leaf celery plant (Apium graveolens) via bottom wet culture to increase its adaptability to the tropical riparian wetland ecosystem. Biodiversitas 22: 320-328. Bottom-wet culture was set up for acclimating leaf celery plant prior to cultivation at shallow water table conditions. The aim of this research was to evaluate adaptability of leaf celery plants to riparian wetland ecosystem. Leaf celery was selected as potential candidate since natural habitat of its wild relatives is marshlands. Shading at 0%, 20%, and 60% was applied to reduced tropical sunlight intensity. Results of this study indicated that soil moisture was significantly increased in plants exposed to 60% shading, but leaf SPAD value was not significantly affected. Leaf celery is a perennial vegetable that can be frequently harvested. Weekly harvesting was rewarded with optimum yield and good quality leaves, i.e. high SPAD value (45.73 to 51.89). Delaying harvest to 3 weeks increased total yield but 52.12% of the harvested leaves were non-marketable. Mother plant of leaf celery produced suckers, but number of suckers only moderately correlated with yield (R2 = 0.56). Plants exposed to 60% shading produced significantly less suckers (9.00) than those exposed to full sunlight (12.46) and 20% shading (12.88) Use of zero intercept linear regression model, with length of leaf midrib (LLM) x leaf wingspan (LWS) as predictor, resulted in a geometrically based and accurate leaf area estimation model (LA = 0.3431(LLM x LWS); R2 = 0.87) for compound leaves of leaf celery plant. In conclusion, the most crucial factor in optimizing quantity and quality of yield was weekly harvesting focusing on marketable-size leaves.

Morphological Characteristics and Growth Behavior of Ridge Gourd [Luffa acutangula (L.) Roxb.] in Tropical Urban Ecosystem

“…Therefore, they can be accurately and non-destructively estimated using leaf morphological traits, i.e., leaf length and/or width as predictors. Some different models can be used to estimate their leaf area, including power, polynomial order-2, or zero-intercept linear regression [19][20][21]. The leaf thickness and weight-related traits had been reported to be less reliable for estimating leaf area [22,23].…”

Searching for Suitable Cultivation System of Swiss Chard (Beta vulgaris subsp. cicla (L.) W.D.J.Koch) in the Tropical Lowland

“…The resulting models are primarily for further use in nondestructive, rapid, and accurate prediction of the LA during its development, so that leaf growth analysis can be realistically calculated as it uses the same leaves. Most LA estimation models are based on regression equations using morphological traits as predictors, such as tomatoes (Meihana et al 2017), cocoa (Salazar et al 2018), tatsoi (Kartika et al 2021), celery (Lakitan et al 2021a), and many others.…”

Responses of Leaf Celery to Floating Culture System with Different Depths of Water-substrate Interface and NPK-fertilizer Application

“…Although statistical analysis did not always assume significant differences amongst WSI treatments, WSI at a depth of 1 cm consistently exhibited higher leaf length×width, except in measurement at 14 DAT in plants fertilized with 15 g/plant (Figure 4). Leaf length×width had been used as a predictor in estimating leaf area in celery plant, and the coefficient for converting leaf length×width to leaf area in celery is 0.3431, with accuracy of 87.24 % [13]. A zero-intercept linear regression model [27] could be used for leaf area estimation in celery plants.…”

“…Leaf Celery Grown with Floating Culture Karla Kasihta JAYA et al http://wjst.wu.ac.th Celery cultivation using bottom wet culture has been successfully performed [13]. However, cultivation of leaf celery using floating culture system has not been intensively studied.…”