scholarly journals PENGARUH PERBEDAAN INTENSITAS CAHAYA DAN PENYIRAMAN PADA PERTUMBUHAN JAGUNG (ZEA MAYS L.) ‘SWEET BOY-02’

2017 ◽  
Vol 6 (1) ◽  
pp. 8 ◽  
Author(s):  
Hafidha Asni Akmalia
Keyword(s):  
Light Intensity ◽  
Water Availability ◽  
Zea Mays L ◽  
Plant Biomass ◽  
Significance Level ◽  
Maize Growth ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Range Test ◽  
Effect Of Light

AbstrakIntensitas cahaya dan ketersediaan air merupakan faktor-faktor yang menjadi penunjang maupun penghambat pertumbuhan tergantung kisaran yang mampu diterima tanaman. Tujuan penelitian ini adalah untuk mengetahui pengaruh intensitas cahaya dan penyiraman terhadap pertumbuhan tanaman jagung. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap dengan 3 faktor intensitas cahaya (L1 : 63694 ; L2 : 11408 dan L3 : 3897 Lux) dan 3 faktor penyiraman (pemberian air sebanyak W1 : 2 L; W2 : 1,6 L; W3 : 1,2 L). Tiap kombinasi perlakuan dibuat tiga ulangan. Penanaman jagung dilakukan di lahan Sawitsari, Yogyakarta. Jagung dipanen saat berumur 75 hari dengan karakter pertumbuhan yang diamati meliputi tinggi tanaman, jumlah daun, rasio daun, berat kering tanaman, dan rasio akar-tajuk. Data dianalisis menggunakan Analisis Sidik Ragam Varian (Anava) dilanjutkan dengan uji Duncan’s Multiple Range Test (DMRT) pada tingkat signifikansi 5%. Hasil penelitian menunjukkan bahwa L1W1 (63694 Lux ; 2 L) menyebabkan semua karakter pertumbuhan meningkat.Kata kunci : jagung, pertumbuhan, intensitas cahaya, penyiraman AbstractThe light intensity and water availability are the factors both supporting and supressing plant growth and it depends on which level that plant can accept. The aim of this research was to evaluate the effect of light intensity and watering in maize growth. This research used Randomized Completed Design with 3 regimes of light intensity (L1 : 63694, L2 : 11408 dan L3 : 3897 Lux) and 3 regimes of watering (W1 : 2 L, W2 : 1,6 L  and W3 : 1,2 L). Each combination was done with 3 replications and it was done in Sawitsari, Yogyakarta. Maize was harvested in 75 days after the treatment and the measured parameters were plant height, leaf total number, leaf ratio, root-shoot ratio, and plant biomass. Data were analyzed by Anava and DMRT test with significance level of 5%. The results showed that L1W1 treatment increased all parameters of growth. Keywords: maize, growth, light intensity, watering

scholarly journals Root-shoot ratio of maize (Zea mays L.) as influenced by different levels of water deficit under two different climatic conditions

2018 ◽  
Vol 2ndInt.Conf.AGR (Special Issue) ◽  
pp. 87-96
Author(s):  
Mardin Othman Othman ◽  
◽  
Aram Abbas Mohammed Mohammed ◽  
Keyword(s):  
Zea Mays ◽  
Water Deficit ◽  
Zea Mays L ◽  
Climatic Conditions ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Different Levels

Effect of Light Intensity on Certain Metabolism of the Corn Plant ( Zea Mays L .) 1

Crop Science ◽  
1962 ◽  
Vol 2 (1) ◽  
pp. 1-5 ◽  
Author(s):  
J. W. Knipmeyer ◽  
R. H. Hageman ◽  
E. B. Earley ◽  
R. D. Seif
Keyword(s):  
Zea Mays ◽  
Light Intensity ◽  
Zea Mays L ◽  
Corn Plant ◽  
Effect Of Light

scholarly journals Do plants modulate biomass allocation in response to petroleum pollution?

2010 ◽  
Vol 6 (6) ◽  
pp. 811-814 ◽  
Author(s):  
Ming Nie ◽  
Qiang Yang ◽  
Li-Fen Jiang ◽  
Chang-Ming Fang ◽  
Jia-Kuan Chen ◽  
...  
Keyword(s):  
Biomass Allocation ◽  
Soil Microbial Biomass ◽  
Soil Microbes ◽  
Plant Biomass ◽  
Pulse Labelling ◽  
Petroleum Pollution ◽  
Soil Microbial ◽  
Plant Trait ◽  
Shoot Ratio ◽  
Root Shoot Ratio

Biomass allocation is an important plant trait that responds plastically to environmental heterogeneities. However, the effects on this trait of pollutants owing to human activities remain largely unknown. In this study, we investigated the response of biomass allocation of Phragmites australis to petroleum pollution by a 13 CO 2 pulse-labelling technique. Our data show that plant biomass significantly decreased under petroleum pollution, but the root–shoot ratio for both plant biomass and 13 C increased with increasing petroleum concentration, suggesting that plants could increase biomass allocation to roots in petroleum-polluted soil. Furthermore, assimilated 13 C was found to be significantly higher in soil, microbial biomass and soil respiration after soils were polluted by petroleum. These results suggested that the carbon released from roots is rapidly turned over by soil microbes under petroleum pollution. This study found that plants can modulate biomass allocation in response to petroleum pollution.

Growth and Nitrogen Uptake by Agropyron desertorum and Pseudoroegneria spicata when Exposed to Nitrate Pulses of Different Duration

1997 ◽  
Vol 24 (5) ◽  
pp. 637 ◽  
Author(s):  
M. Cui ◽  
M. M. Caldwell
Keyword(s):  
Mixed Culture ◽  
Pulse Duration ◽  
Nitrate Uptake ◽  
Plant Biomass ◽  
Perennial Grasses ◽  
Shoot Biomass ◽  
Pseudoroegneria Spicata ◽  
Agropyron Desertorum ◽  
Shoot Ratio ◽  
Root Shoot Ratio

Plant growth and nitrate uptake were measured for two Great Basin perennial grasses, Agropyron desertorum and Pseudoroegneria spicata, in sand-filled pots in either monoculture or mixed culture (2 plants/pot). All plants were supplied with the same initial amount of nitrate but delivered in five different pulse durations ranging from 0.5 to 72 h. The pulse duration was controlled by flushing the pots with water at different times after applying the nitrate pulse. The same concentration of nitrate was used in all pulse treatments. Increasing the pulse duration led to significantly increased plant biomass production for both species in both mono- and mixed cultures, and to reduced root/shoot biomass ratio. Biomass and root/shoot ratio were greater for Agropyron in mixed culture than in monoculture. To assess root nitrate uptake capacity, a 30-min tracer pulse was applied to all plants. Plants that had been exposed to longer pulses acquired significantly more nitrate than those that had been exposed to shorter pulses for both total plant acquisition and acquisition per unit root length. With greater root/shoot ratio than Pseudoroegneria, total nitrate acquisition by Agropyron was significantly greater at most pulse durations. Root nitrate uptake per unit mass was also greater for Agropyron than for Pseudoroegneria, indicating that Agropyron is more responsive to nitrate pulsing.

Research on Regulating the Effect of Different Mulching Measures on Root Spatial Distribution and the Root-Shoot Ratio of Maize

2014 ◽  
Vol 1030-1032 ◽  
pp. 361-369
Author(s):  
Ke Xin Wang ◽  
Qiang Fu ◽  
Xin Jiang ◽  
Xiao Ping Zhang
Keyword(s):  
Spatial Distribution ◽  
Surface Area ◽  
Root Surface ◽  
Root Surface Area ◽  
Root Weight ◽  
No Tillage ◽  
Straw Mulching ◽  
Maize Growth ◽  
Shoot Ratio ◽  
Root Shoot Ratio

The effects of four types of mulching models (surface tillage with straw mulching, no-tillage with straw mulching on furrow, no-tillage with stubble mulching, and no-tillage with straw mulching on ridge and furrow) on the root spatial distribution and the relationship between the roots and shoots of maize were investigated using stratified digging methods, with maize as the test crop. The distribution of maize roots was cone shaped and gradually extended from 20 cm to 40 cm below the surface during the elongation stage. Under the different mulch tillage models, the effects on maize root growth were positive. The mulching measures significantly affected the control and support of the early and later stages of maize growth. The maize significantly differed in the root weight density (P=0.026<0.05) and the root surface area (P =0.005<0.01) with different mulching measures. No-tillage with straw mulching on the ridge and furrow was the only mulching model in which the growth of the roots and leaves of maize was limited. However, the other maize growth measures were better than conventional tillage. In addition, no-tillage with straw mulching on the ridge and furrow had an advantage in terms of the growth of the surface roots, while stubble mulching and strip mulching had advantages in terms of the growth of deep roots and radial roots, respectively. Surface tillage with straw mulching was an ideal cultivation method for the cold and arid regions of North China and had significant advantages in terms of the growth of the root weight, root surface area and root-shoot ratio.

scholarly journals Growth and Biomass yield of Oil Palm (Elaeis guineensis) Seedlings as Influenced by Different Rates of Vermicompost

2017 ◽  
Vol 2 (8) ◽  
pp. 17 ◽  
Author(s):  
A. N. Ashraf ◽  
S. Zulkefly ◽  
Salisu Monsuru Adekunle ◽  
Mohd Yusoff A. Samad
Keyword(s):  
Plant Height ◽  
Oil Palm ◽  
Plant Biomass ◽  
Elaeis Guineensis ◽  
Dry Weight ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Vegetative Traits ◽  
Foliar Nutrient ◽  
Total Dry Weight

The effect of palm oil mill effluent vermicompost on growth and vegetative traits of oil palm seedlings was evaluated. Different rates of vermicompost 10 g, 20 g and 30 g and 20 g of an NPK blue fertilizer as designated control was used. The experiment was conducted over a period of 120 days. Growth and vegetative traits like plant height, girth size, total dry weight (TDW) and root: shoot ratio (RSR) and foliar nutrient data were collected. Noticeably, the vermicompost and the NPK blue fertilizer were at par in stimulating the growth of the oil as shown in the plant height and girth size. The total dry weight (TDW) and Root: shoot ratio (RSR) showed that the vermicompost especially the higher rates significantly performed equal and positively affected the plant biomass. The nitrogen content was apparent in the plants grown with the highest rate of the vermicompost 30 g and the fertilizer with a significant effect on the leaf chlorophyll content. The results showed that the vermicompost particularly the higher rates were as suitable as the fertilizer with respect to the growth and vegetative traits. 

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