Use of a leaf chlorophyll content index to improve the prediction of above-ground biomass and productivity

Liu, Chuang; Liu, Yi; Lu, Yanhong; Liao, Yulin; Nie, J.; Yuan, Xiaoliang; Chen, Fang

doi:10.7717/peerj.6240

Cited by 87 publications

(68 citation statements)

References 48 publications

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“…Based on the phenological growth/BBCH stages, the mean CCI values in the current study for the tillering stage, booting stage, filling stage, and maturity stage were 6.0, 16.9, 23.0, and 14.2, respectively. In accordance, Liu et al [29] concluded that at the same growth stages the median CCI values were 21.1, 43.1, 41.1, and 18.9, respectively. In both studies, the CCI values followed the same trend: a growth path until the filling stage and then a decrease until the maturity stage.…”

Section: Significance Of F Ratiosupporting

confidence: 65%

Section: Significance Of F Ratiomentioning

confidence: 99%

“…According to Peng et al [30], CCI is a good indicator for the evaluation of compost effects on rice cultivation, whereas chlorophyll meters can be used for monitoring leaf nitrogen status in rice, since rice plants with higher nitrogen content have higher chlorophyll content and consequently higher CCI values [31]. Chlorophyll provides an indication of the nutritional status as a result of nitrogen absorption and utilization, which serves as a reliable means to estimate the function of the nitrogen fertilizer [29] and this is confirmed from our results. Treatments contain compost application of (i) 80 kg ha −1 N in split application (C1), (ii) 160 kg ha −1 N in split application (C2), (iii) 320 kg ha −1 N in split application (C3), (iv) 160 kg ha −1 N in single application (C4), (v) an untreated control (CONTR), and (vi) 160 kg ha −1 nitrogen chemical fertilizer (CONVEN).…”

Section: Significance Of F Ratiomentioning

confidence: 99%

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A Novel Compost for Rice Cultivation Developed by Rice Industrial By-Products to Serve Circular Economy

et al. 2019

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Rice is the major staple crop worldwide, whereas fertilization practices include mainly the application of synthetic fertilizers. A novel compost was developed using 74% of rice industrial by-products (rice bran and husks) and tested in rice cultivation in Greece’s main rice producing area. Field experimentation was conducted in two consecutive growing seasons (2017 and 2018) and comprised six fertilization treatments, including four compost rates (C1: 80, C2: 160, C3: 320 kg ha−1 of nitrogen all in split application, C4: 160 kg ha−1 of nitrogen in single application), a conventional treatment, as well as an untreated control. A total of 21 morpho-physiological and quality traits were evaluated during the experimentation. The results indicated that rice plants in all compost treatments had greater height (8%–64%) and biomass (32%–113%) compared to the untreated control. In most cases, chlorophyll content index (CCI) and quantum yield (QY) were similar or higher in C3 compared to the conventional treatment. C2 and C3 exhibited similar or greater yields, 7.5–8.7 Mg ha−1 in 2017 and 6.3–6.9 Mg ha−1 in 2018, whereas the conventional treatment resulted in 7.3 Mg ha−1 and 6.8 Mg ha−1 in the two years, respectively. No differences were observed in most quality traits that affect the rice commodity. The current study reveals that in sustainable farming systems based on circular economy, such as organic ones, the application of the proposed compost at the rate of 6 Mg ha−1 can be considered sufficient for the rice crop nutrient requirements.

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Section: Significance Of F Ratiosupporting

confidence: 65%

Section: Significance Of F Ratiomentioning

confidence: 99%

Section: Significance Of F Ratiomentioning

confidence: 99%

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A Novel Compost for Rice Cultivation Developed by Rice Industrial By-Products to Serve Circular Economy

et al. 2019

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“…The efficient photosynthesis is extremely important, because it determines the crop yield and the effectiveness of capturing the light and transforming it into the biomass [ 33 ]. The chlorophyll in leaves is a major indicator of the leaf greenness, and is frequently determined to verify the nutrient deficiencies (e.g., nitrogen and the changes in its content) [ 34 ]. There is a substantial link between the amount of chlorophyll and leaf nitrogen.…”

Section: Discussionmentioning

confidence: 99%

Field-Scale Evaluation of Botanical Extracts Effect on the Yield, Chemical Composition and Antioxidant Activity of Celeriac (Apium graveolens L. Var. rapaceum)

et al. 2020

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The use of higher plants for the production of plant growth biostimulants is receiving increased attention among scientists, farmers, investors, consumers and regulators. The aim of the present study was to examine the possibility of converting plants commonly occurring in Europe (St. John’s wort, giant goldenrod, common dandelion, red clover, nettle, valerian) into valuable and easy to use bio-products. The biostimulating activity of botanical extracts and their effect on the chemical composition of celeriac were identified. Plant-based extracts, obtained by ultrasound-assisted extraction and mechanical homogenisation, were tested in field trials. It was found that the obtained formulations increased the total yield of leaves rosettes and roots, the dry weight of leaves rosettes and roots, the content of chlorophyll a + b and carotenoids, the greenness index of leaves, the content of vitamin C in leaves and roots. They mostly decreased the content of polyphenols and antioxidant activities in leaves but increased them in roots and conversely affected the nitrates content. Extracts showed a varied impact on the content of micro and macroelements, as well as the composition of volatile compounds and fatty acids in the celeriac biomass. Due to the modulatory properties of the tested products, they may be used successfully in sustainable horticulture.

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“…Klorofil merupakan pigmen pada tanaman yang berperan penting dalam menentukan laju fotosintesis dan pertumbuhan tanaman (Li et al, 2018) dan berasosiasi kuat dengan kandungan mineral Fe (Rodrigues et al, 2015). Laju fotosintesis berkorelasi sangat kuat dengan karakter daya hasil (Karademir, Karademir, Ekinci, & Gençer, 2008;Liu et al, 2019), khususnya pada tanaman kopi (R=0,94*) (Reis et al, 2009).…”

Section: Karakter Morfofisiologi Daununclassified

Identifikasi Awal Perbedaan Karakter Morfofisiologi Antar Empat Kultivar Kopi Arabika

Dani¹,

Rokhmah²,

Pranowo³

2019

J. tanam. industri dan penyegar

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Arabica coffee is a perennial crop hence it has a long selection cycle. Therefore, efforts to shorten the selection process is necessary, such as at seedling stage. This study aims to identify morpho-physiological characters variability among Arabica coffee cultivars at seedling stage. The experiment was conducted at Pakuwon Experimental Garden of Indonesian Industrial and Beverage Crops Research Institute, Sukabumi, from January to October 2017. Seeds collected from open pollinated trees of four arabica coffee cultivars (Ateng Super, P88, Gayo 1, and Gayo 2) were then sown on seedbed and newly-emerged cotyledonous seedlings were transferred immediately into polyethylene bag (polybag). Seedlings were arranged in randomized complete block with 5 replications, each consisted of 10 seedlings of each cultivar. Morpho-physiological characters observed and analyzed were shoot (plant height, lateral shoot formation, number of internodes, internode length, stem diameter, shoot’s dry weight); leaves (number of leaves, leaf length, leaf width, L/W ratio, leaf area, stomata density , chlorophyll content); and root (root length, number of primary roots, root volume, root’s dry weight, root/shoot ratio). The result showed value of genetic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), and broad sense heritability (h2bs) of plant height characters are classified as high, each of which is 21.66%; 23.66%; and 0.84, respectively. The characters of the stem length and leaf width showed high h2bs value (0.97 and 0.67 respectively), while the KKG and KKF values were classified as moderate (19.60% and 19.88%, respectively and 10.71% and 13.10%, respectively). Those three characters could be utilized as distincitive markers of the four Arabica coffee cultivars.

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Use of a leaf chlorophyll content index to improve the prediction of above-ground biomass and productivity

Cited by 87 publications

References 48 publications

A Novel Compost for Rice Cultivation Developed by Rice Industrial By-Products to Serve Circular Economy

A Novel Compost for Rice Cultivation Developed by Rice Industrial By-Products to Serve Circular Economy

Field-Scale Evaluation of Botanical Extracts Effect on the Yield, Chemical Composition and Antioxidant Activity of Celeriac (Apium graveolens L. Var. rapaceum)

Identifikasi Awal Perbedaan Karakter Morfofisiologi Antar Empat Kultivar Kopi Arabika

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