scholarly journals Leaf area index assessment for tomato and cucumber growing period under different water treatments

2017 ◽  
Vol 63 (No. 10) ◽  
pp. 461-467 ◽  
Author(s):  
Hossain Shaikh Abdullah Al Mamun ◽  
Wang Lixue ◽  
Chen Taotao ◽  
Li Zhenhua
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
North China ◽  
Block Design ◽  
Area Index ◽  
Water Capacity ◽  
Growing Period ◽  
Randomized Block Design ◽  
Best Fitting ◽  
Water Treatments

The aim of this study was to assess the leaf area index (LAI) of tomato and cucumber using an AccuPAR-LP-80-ceptometer to find the influence of irrigation. LAI was also determined by destructive sampling for comparison. The research was conducted at the Liaoning Water Conservancy Institute, North China in 2016. A randomized block design was used to test the influence of four treatments corresponding to field water capacity. Full irrigation (W<sub>1.0</sub>), 15% (W<sub>0.85</sub>), 25% (W<sub>0.75</sub>) and 35% (W<sub>0.65</sub>) water deficit were applied using the drip system. Regression model was developed to estimate LAI in response to irrigation. The results show that there is no difference between the two methods. The highest LAI obtained for tomato and cucumber was 5.21 and 3.21 m<sup>2</sup>/m<sup>2</sup>, respectively, with W<sub>0.85</sub> at 70-days after transplanting, which corresponds with destructive results. This result was found 11% higher and equal compared with W<sub>1.0</sub> for tomato (4.62) and cucumber (3.21), respectively. For both crops, LAI was found significantly influenced at 50-days after transplanting. It also indicated that LAI significantly influenced (by 15%) deficit irrigation for both crops and methods that achieved the highest yield. The predicted LAI was obtained best-fitting with the observed values, which indicated that the AccuPAR-ceptometer is suitable to be used.

scholarly journals Improvement of Snap Beans Yield through the Application of N, P, K and Granule Organic Fertilizers on Inceptisols Soil

2020 ◽  
Vol 11 (3) ◽  
pp. 174-182
Author(s):  
Kusumiyati ◽  
Wawan Sutari ◽  
Arif Affan Wicaksono ◽  
Ade Risti Oktavia
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Organic Fertilizer ◽  
Organic Fertilizers ◽  
Area Index ◽  
Snap Beans ◽  
Randomized Block Design ◽  
K Fertilizer ◽  
Pod Length

Balanced organic and inorganic fertilization is expected to improve low nutrient on Inceptisols to increased snap bean production. The effect of the combination of N, P, K, and granule organic fertilizer on bean harvests was the purpose of this study. The parameters were leaf area index (LDA), shoot-root ratio, the weight of pods, pod length, pod diameter, percentage of the number of pods, marketable and unmarketable,and percentage of pods by quality class. The experiment was conducted in February to April 2016 at Ciparanje Experimental Farm, Faculty of Agriculture, Padjadjaran Univeristy, Jatinangor. The study was conducted using a randomized block design (RBD) with 10 treatments and 3 replications. The experimental results showed that N, P, K fertilizer and granule organic fertilizer (GOF) in the order of Inceptisols significantly affected the weight of pods. Application 50% of the dosage N, P, K fertilizer combined with 50% dosage of granule organic fertilizer resulted in a higher pod weight per plot, which reached 2 439.84 g. Keywords: an organic fertilizer, granule organic fertilizer, leaf area index, quality grade, shoot-root ratio,

scholarly journals PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG PROLIFIK PADA BERBAGAI JARAK TANAM DALAM BARIS DENGAN SISTEM TANAM JAJAR LEGOWO

2020 ◽  
Vol 4 (1) ◽  
pp. 13-23
Author(s):  
Intan Dwi Lestari
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Stem Diameter ◽  
Growth And Yield ◽  
Area Index ◽  
Plant Weight ◽  
South Sulawesi ◽  
Randomized Block Design ◽  
Number Of Leaves

This research aimed to determine the effect of spacing on the growth and yield of corn. It was conducted from July to November 2019 at the Experimental Plantation of Cereal Crops Research Institute (BalitSereal), Maros, South Sulawesi. The experimental method used was a randomized block design consisting of 4 treatments: J1= (100 cm x 50 cm) x 20 cm, one seed per hole; J2= (100 cm x 50 cm) x 30 cm, alternating between one seed per hole and two seeds per hole; J3= (100 cm x 50 cm) x 40 cm, two seeds per hole; J4= (100 cm x 50 cm) x 15 cm, one seed per hole. The observed variables were plant height, number of leaves, stem diameter, leaf area index, Anthesis Silking Interval (ASI), length of cob 1 and cob 2, diameter of cob 1 and cob 2, weight of shelled seeds/plant, weight of 100 seeds on cob 1 and cob 2, and production of shelled seeds/hectare. The experimental results showed that plant spacing affected the growth and production of maize. The J3 spacing (100 cm x 50 cm) x 40 cm with two seeds per hole significantly affected the leaf area index and gave the highest average stem diameter. The J2 spacing with (100 cm x 50 cm) x 30 cm with alternating between one seed per hole and two seeds per hole produced the highest production in terms of weight of shelled seeds/plant, weight of 100 seeds and yield of shelled seeds/hectare.

scholarly journals The production of Physalis spp. seedlings grown under different-colored shade nets

2016 ◽  
Vol 38 (2) ◽  
pp. 257 ◽  
Author(s):  
Daniel Fernandes da Silva ◽  
Rafael Pio ◽  
Joyce Dória Rodrigues Soares ◽  
Paulyene Vieira Nogueira ◽  
Pedro Maranha Peche ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Dry Mass ◽  
Additional Treatment ◽  
Light Spectrum ◽  
Treatment Control ◽  
Area Index ◽  
Randomized Block Design ◽  
Number Of Leaves

The objective of this study was to evaluate the production of seedlings of Physalis L. species under different-colored shade nets. Four shade nets individually stained white, blue, red and black, all with 50% shading, were used in this study, and an additional  treatment (control) was used in which seedlings were grown in full sun. The study examined four species of Physalis, namely, P. peruviana, P. pubescens, P. minima and P. ixocarpa. The experiment followed a randomized block design with three blocks and 25 seeds per plot. The species were sown in styrofoam trays. Germination was monitored daily to calculate the Emergency Velocity Index (EVI) and stabilize the overall percentage of emergence. Height, stem diameter, number of leaves, leaf area index and dry mass of seedlings were assessed at 50 days after sowing. The study found that these species react differently to changes in the light spectrum. Seedlings of P. peruviana should be grown under a white or red shade net; of P. pubescens under a white or black shade net; of P. minima under a white, red or black shade net; and of P. ixocarpa under a white shade net. For all species, 50% shade should be used. 

scholarly journals PENGARUH WARNA NAUNGAN PLASTIK DAN DOSIS PUPUK ORGANIK KOMPOS TERHADAP PERTUMBUHAN BAWANG MERAH (Allium ascalonicum L.)

2018 ◽  
Vol 16 (2) ◽  
pp. 129
Author(s):  
Iskandar Umari ◽  
Wiwit Widarti ◽  
Insan Wijaya ◽  
Hudaini Hasbi
Keyword(s):  
Growth Rate ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Transparent Plastic ◽  
Area Index ◽  
Randomized Block Design ◽  
Treatment Dose

The aim of the research was to study the effect of calors plastic shade and dosage organic fertilizer and the interaction on the growth analyze of Shallots. The experiment was conducted in experiment field of Agriculture Faculty, University Muhammadiyah of Jember.The experiment was arranged in Randomized Block Design consisted of 4 x 3 factorial treatments with three replications. The first factor were 3 levels of Transparent Plastic Shelter, i.e.: clear, blue, and red. The second factor were 4 levels of compost organic fertilizer application, i.e.: 15, 20, 25 and 30 t/ha. The results showed a significant interaction between the color shade of plastic and a dose of organic fertilizer on the parameters of leaf area age 60 days after planting and leaf area index age 60 days after planting, treatment shade of blue with organic fertilizer 30 tons / ha showed the best effect on leaf area and treatment shade of blue with dosages of 25 tons / ha showed the best effect on leaf area index. Use of shade of blue give the best effect on leaf area age 60 hst and shade of red gives the best effect on the growth rate of plants. The treatment dose of organic fertilizer 25 tons / ha gives the best effect on leaf area index age of 60 days after planting, the rate of plant growth, and relative growth rate, and treatment with a dose of fertilizer 30 ton / ha.

scholarly journals Respon Pertumbuhan dan Hasil Tanaman Hanjeli (Coix lacryma-jobi L.) terhadap Jarak Tanam dan Pupuk Pelengkap Cair

Agrikultura ◽  
2017 ◽  
Vol 28 (2) ◽  
Author(s):  
Ruminta Ruminta ◽  
Yuyun Yuwariah ◽  
Nalendia Sabrina
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Growth And Yield ◽  
Row Spacing ◽  
West Java ◽  
Area Index ◽  
Randomized Block Design ◽  
Job’S Tears ◽  
Level 2

ABSTRACTResposse of Growth and Yields of Jobs Tears to Row Spacing and Liquid Complement FertilizerJob’s tears (Coix laeryama-jobi L.) are a functional food crop in West Java Indonesia. It is rich of nutritions when used as food and also rich of essential chemicals when used as herbal. It can grow on marginal ecosystem, tolerance to water stress’s environment. However, Job’s tears are low in grain production. The problem could be overcome by treatment of row spacing and liquid complement fertilizers to increase the plants growth and yields. This study used three levels of row spacing (50 x 50 cm, 75 x 50 cm, and 100 x 50 cm) and three levels of liquid complement fertilizers (2 ml/l, 4 ml/l, and 6 ml/l) to examine the growth and yields of jobs tears. The experiment used Randomized Block Design (RBD) consisted of nine treatments and three replications. The experiment was conducted at Sukasari Sumedang West Java. Growth and yield indicators such as leaf area index, percentage of huskering and harvesting index were observed. The results showed that the treatments of row spacing and liquid complement fertilizer had significantly affected the leaf area index, percentage of huskering and Job’s tears harvesting index. The combination of plant spacing at 50 x 50 cm with the concentration of liquid complement fertilizer at level 2 ml/l showed the best effect to the jobs tears yield. It resulted the weight of seeds of 4.77 kg/ plot and the weight of seed was 5.96 tons/ha. This indicated that the row spacing and liquid complement fertilizer had significantly affecting the Job’s tears yield.Keywords: Job’s tears, Row spacing, Liquid complement fertilizer, Growth, YieldsABSTRAKTanaman hanjeli merupakan tanaman pangan fungsional di Jawa Barat Indonesia. Tanaman hanjeli sangat kaya nutrisi sebagai sumber makanan dan kaya bahan kimia penting sebagai tanaman herbal. Tanaman tersebut dapat tumbuh pada lahan marjinal dan toleran terhadap cekaman air, namun demikian hasilnya masih rendah. Penelitian ini bertujuan untuk mengetahui pengaruh perlakuan jarak tanam dan pemberian pupuk pelengkap cair terhadap peningkatan pertumbuhan dan hasil tanaman hanjeli. Penelitian ini menggunakan tiga level jarak tanam (50x50 cm, 75x50 cm, dan 100x50 cm) dan tiga level konsentrasi pupuk pelengkap cair (PPC) (2 ml/l, 4 ml/l, dan 6 ml/l) sebagai perlakuan. Percobaan di lapangan menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 9 perlakuan dan tiga kali ulangan yang dilaksanakan di Sukasari Sumedang Jawa Barat. Data yang diamati adalah komponen pertumbuhan dan hasil tanam hanjeli. Hasil penelitian menunjukkan bahwa kombinasi jarak tanam dengan aplikasi pupuk pelengkap cair memberikan pengaruh terhadap indeks luas daun, rendemen pecah kulit, dan indeks panen. Kombinasi jarak tanam 50 x 50 dengan konsentrasi PPC 2 ml/l memberikan pengaruh terbaik terhadap hasil tanaman hanjeli. Perlakuan tersebut menghasilkan bobot biji per petak sebesar 4,77 kg per petak dan bobot biji per hektar sebesar 5,96 ton per hektar. Dari hasil penelitian ini dapat disimpulkan bahwa jarak tanam dan pupuk pelengkap cair memberikan pengaruh yang baik terhadap hasil tanaman hanjeli.Kata Kunci : Hanjeli, Jarak tanam, Pupuk pelengkap cair, Pertumbuhan, Hasil

scholarly journals Adaptive Responses of Paspalum oteroi Native Grass to Fertilization and Shading

2020 ◽  
Vol 8 (3) ◽  
pp. 871
Author(s):  
Alex Coene Fleitas ◽  
Luísa Melville Paiva ◽  
Sandra Aparecida Santos ◽  
Henrique Jorge Fernandes ◽  
Redney Gomes Brevilieri ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Dry Matter ◽  
Block Design ◽  
Adaptive Responses ◽  
Native Grass ◽  
Area Index ◽  
Foliar Fertilizer ◽  
Randomized Block Design ◽  
Matter Production

The aim of this study was to evaluate the Paspalum oteroi native grass and its adaptive responses to shading and foliar fertilization in two pasture systems in the Cerrado-Pantanal transition region. A completely randomized block design with factorial arrangement was adopted to this study: three types of fertilizers [no fertilization – control (C); Foliar fertilizer for pasture (FF) and Soil fertilizer + Foliar fertilizer (SF)] x two pasture systems (WS - with shading, wooded P. oteroi pasture; NS - no shading, exclusive P. oteroi pasture) with four repetitions. P. oteroi seedlings were transplanted in November 2015. Data collection was from May 2016 to September 2016, during dry season. There were differences (p<0.05) in the sward height variables (H), dry matter (DM), crude protein (CP) content, dry matter production (DMP) and shoot: root ratio (S:R). In the WS system increased of 8,61% of the CP content and fertilizer SF increased of 8.81% of the CP content. However, in the WS system was observed reduced DM, DMP and S:R and in the FF and SF fertilizers increased leaf area index (LAI), in the latter months of the application. Probably, P. oteroi grass developed adaptation strategies to deal with the environmental conditions to which it was submitted during this study, such as variations in its morphophysiological traits: low shoot / root ratio, height, chemical composition, leaf area index e light interception. In conclusion, P. oteroi showed adaptation to wooded pasture systems, during dry period, however, the use of fertilization depends on economic viability studies.

scholarly journals Growth and yield of wheat at different dates of sowing under chrland ecosystem of Bangladesh

2017 ◽  
Vol 14 (2) ◽  
pp. 147-154 ◽  
Author(s):  
MM Kamrozzaman ◽  
MAH Khan ◽  
S Ahmed ◽  
N Sultana
Keyword(s):  
Growth Rate ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Dry Matter ◽  
Block Design ◽  
Grain Filling ◽  
Crop Growth ◽  
Growth And Yield ◽  
Area Index ◽  
Crop Growth Rate

An experiment was conducted at Sadipur charland under Farming System Research and Development Site, Hatgobindapur, Faridpur, during rabi season of 2012-13 and 2013-14 to study the growth and yield performance of cv. BARI Gom-24 as affected by different dates of sowing under Agro-ecological Zone-12 (AEZ-12) of Bangladesh. The experiment was laid out in randomized complete block design with six replications, comprising five different dates of sowing viz. November 5, November 15, November 25, December 5 and December 15. Results reveal that the tallest plant, leaf area index, total dry matter, and crop growth rate were observed in November 25 sown crop and leaf area index, total dry matter and crop growth rate were higher at booting, grain filling, and tillering stages of the crop. Maximum effective tillers hill-1 (3.49), spikes m-2, (311), number of grains spike-1 (42.20) and 1000-grain weight (52.10 g) were produced by November 25 sown crop exhibited the highest grain (4.30 t ha-1) and straw yield (4.94 t ha-1) as well as harvest index (46.88%) of the crop. Lowest performance was observed both in early (November 5) and late sown crop (December 15). The overall results indicated that November 25 sown crop showed better performance in respect of growth and yield of wheat under charland ecosystem of Bangladesh.J. Bangladesh Agril. Univ. 14(2): 147-154, December 2016

scholarly journals AVALIAÇÃO DE TRÊS MÉTODOS DE OBTENÇÃO DO ÍNDICE DE ÁREA FOLIAR PARA CULTURA DA SOJA

Nativa ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 284
Author(s):  
Ana Laura Pereira Souza ◽  
Marcelo Marques Costa ◽  
Darly Geraldo de Sena Junior ◽  
Rogério Borges de Oliveria Paz
Keyword(s):  
Leaf Area ◽  
Plant Density ◽  
Digital Images ◽  
Block Design ◽  
Linear Equations ◽  
Density Variation ◽  
Imaging Method ◽  
Area Index ◽  
Soybean Crop ◽  
Randomized Block Design

O Índice de área foliar (IAF) representa a eficiência na interceptação e utilização da radiação solar pelas plantas. O IAF pode ser obtido de forma direta, determinando-se a área foliar e área ocupada pela planta. Entretanto, métodos indiretos são comumente utilizados para sua estimativa devido a necessidade de praticidade. O objetivo deste trabalho foi avaliar a equivalência das estimativas do IAF obtidas por meio de um ceptômetro, pelo método de discos e utilizando imagens digitais. Para tanto, foi conduzido um experimento com a cultura da soja, no delineamento em blocos casualizados, com variação da densidade de plantas, para comparar os valores de IAF obtidos pelos diferentes métodos aos 34 dias após a semeadura (DAS). A comparação foi feita por meio dos coeficientes de equações lineares ajustadas entre os resultados obtidos. O método do disco e do ceptômetro, apresentaram uma boa equivalência entre seus valores. Entretanto, o método que utiliza imagens superestimou o IAF, não apresentando uma boa equivalência de seus valores aos do método de discos e ao ceptômetro.Palavras-chave: ceptômetro, discos foliares, imagens digitais. EVALUATION OF THREE OBTAINMENT METHODS OF FOLIAR AREA INDEX FOR SOYBEAN CROP ABSTRACT:The leaf area index (LAI) represents the interception efficiency and use of solar radiation by plants. IAF can be obtained directly, determining the leaf area and area occupied by the plant. However, indirect methods are commonly used for their estimation because for practicality. The objective of this work was to evaluate the equivalence of the LAI estimates obtained with a ceptometer, using the disc method and digital images. A experiment was conducted with soybean crop, in a randomized block design with plant density variation to compare the LAI values obtained by the different methods at 34 days after sowing (DAS). The comparison was made through the coefficients of linear equations adjusted between the results obtained. The disc and the ceptometer method presented a good equivalence between their values. However, the imaging method overestimated the LAI, not presenting a good equivalence of its values to those of the disc method and the ceptometer.Keywords: ceptometer, leaf discs, digital images.

scholarly journals Influence of Spiral Nematodes (Scutellonema spp.) on Maize Performance and Growth under Natural Field Infestation in Mwea, Kenya

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Samuel Maina ◽  
Rossa Nyoike Ng’endo
Keyword(s):  
Food Security ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Height ◽  
Management Practices ◽  
Block Design ◽  
Negative Relationship ◽  
Stress Factors ◽  
Area Index ◽  
Number Of Leaves

Maize (Zea mays L.) is a significant food security crop in Kenya and it serves as the main source of nutrition and calories among the small-holder farmers. The overall maize yields per hectare have been fluctuating in the past few years posing a great risk to food security. Among the stress factors associated with maize yield loss include plant-feeding nematodes. In this regard, this study was conducted to evaluate the impacts of plant-parasitic nematodes specifically Scutellonema spp. under field conditions on maize performance in Mwea, Kenya. The field trials were laid out in a randomized complete block design with each treatment comprising of four replicates. The treatments included maize plots without nematicide (MPWN) and control plots treated with nematicide. The experiments were conducted in two trials. Soil samples were taken at a 0–20 cm depth at monthly intervals during 2018–2019. During the two trials, MPWN recorded significantly lower plant height and number of leaves per plant. Correlation analysis revealed a significant negative relationship between Scutellonema abundance with leaf area index, plant height, and number of functional leaves in MPWN during the 2019 trial. This implies that high population of Scutellonema perhaps has the potential to affect leaf area index, plant height, number of leaves per plant, which are aspects that in turn influence maize productivity. Therefore, holistic sustainable management practices to control Scutellonema spp. in maize fields such as use of organic amendments, resistant maize cultivars, and antagonistic organisms are crucial in order to alleviate negative impacts linked to Scutellonema infestation.

scholarly journals A new method for estimating the leaf area index of cucumber and tomato plants

2003 ◽  
Vol 21 (4) ◽  
pp. 666-669 ◽  
Author(s):  
Flávio Favaro Blanco ◽  
Marcos Vinícius Folegatti
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Area Measurement ◽  
Quadratic Model ◽  
Regression Equations ◽  
Area Index ◽  
Tomato Plants ◽  
Potted Plants ◽  
Growing Period ◽  
Area Distribution

Non-destructive methods of leaf area measurement are useful for small plant populations, such as experiments with potted plants, and allow the measurement of the same plant several times during the growing period. A methodology was developed to estimate the leaf area index (LAI) of cucumber and tomato plants through the evaluation of the leaf area distribution pattern (LADP) of the plants and the relative height of the leaves in the plants. Plant and leaf height, as well as the length and width of all leaves were measured and the area of some leaves was determined by a digital area meter. The obtained regression equations were used to estimate the leaf area for all relative heights along the plant. The LADP adjusted to a quadratic model for both crops and LAI were estimated by measuring the length and width of the leaves located at the relative heights representing the mean leaf area of the plants. The LAI estimations presented high precision and accuracy when the proposed methodology was used resulting in time and effort savings and being useful for both crops.

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