scholarly journals CHARACTERISATION AND BIOASSAY OF BIOFILMED HALOTOLERANT NFIXER BIOFERTILIZERS FOR IMPROVING THE RICE SEEDLING GROWTH ON SALINIZED GROWING MEDIA

2022 ◽  
Vol 06 (06) ◽  
pp. 167-179
Author(s):  
Fathin Rasima Daulay ◽  
Roby Ibnu Syarifain ◽  
Natabella Julie Hasty ◽  
Fachri Dio Pamungkas ◽  
Mieke Rochimi Setiawati ◽  
...  
2018 ◽  
Vol 165 ◽  
pp. 672-673
Author(s):  
Soumik Mitra ◽  
Krishnendu Pramanik ◽  
Anumita Sarkar ◽  
Pallab Kumar Ghosh ◽  
Tithi Soren ◽  
...  

2018 ◽  
Vol 10 (3) ◽  
pp. 860-863
Author(s):  
Naresh Kumar ◽  
A. K. Handa ◽  
Inder Dev ◽  
Asha Ram ◽  
A. R. Uthappa ◽  
...  

The seeds of Albizia lebbeck have been observed to exhibit physical dormancy due to presence of hard seed-coat. To overcome this problem, the seeds were subjected to seven pre-sowing treatments viz., T1-immersion of seeds in cold water for 12 h; T2-immersion of seeds in cold water for 24 h; T3-immersion of seeds in hot water (100 °C) and subsequent cooling at room temperature for 12 h; T4-immersion of seeds in hot water (100 °C) and subsequent cooling at room temperature for 24 h; T5-immersion of seeds in cold water for 12 h followed by immersion in hot water (100 °C) and allowed to cool for 1 h; T6-immersion of seeds in cold water for 24 h followed by immersion in hot water (100 °C) and allowed to cool for 1 h. Untreated seeds served as control (T0). Treatment T3 gave highest germination (96%) which was comparable with T5 (95 %), T4 (94 %) and T6 (93%). Nine growing media viz., T1: soil,  T2: soil+sand (2:1), T3: soil+perlite (2:1), T4: soil+Farm Yard Manure (FYM) (2:1), T5: soil+vermicompost (2:1), T6: soil+sand+FYM (1:1:1), T7: soil+sand+vermicompost (1:1:1), T8: soil+perlite+FYM (1:1:1) and T9: soil+perlite+ vermicompost (1:1:1) were, also, studied for their effect on seedling growth of A. lebbeck. Among these media, maximum values of shoot length (23.82 cm), root length (21.14 cm), collar diameter (3.59 mm) and seedling quality index (0.350) were observed in T7.


2003 ◽  
Vol 69 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Hiromitsu Furuya ◽  
Tsutomu Matsumoto ◽  
Shin-ichi Fuji ◽  
Hideki Naito

2020 ◽  
Author(s):  
Dipika S. Patel ◽  
Bardhan Kirti ◽  
P Patel Dhiraji ◽  
Parekh Vipulkumar ◽  
Jena Suchismita ◽  
...  

ABSTRACTThe root is the sensing organ for potassium (K) and water availability. We evaluated whether K availability influences root architecture and contributes to drought tolerance under moisture stress. Rice seedling growth was severely affected by low K availability under water stress, and the substantial reductions in root projected area, maximum width, and width to depth ratio were observed. High K availability helps maintain root top and bottom angles and reduces root steepness under mild water stress, but over K nutrition does not ensure higher seedling growth. Under severe water stress, the steepness was more regulated by water than K availability.


Forests ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 543 ◽  
Author(s):  
Mohammad Nasir Shalizi ◽  
Barry Goldfarb ◽  
Owen Thomas Burney ◽  
Theodore Henry Shear

In developing countries, tree seedlings are often produced in polybags filled with mixtures of locally available materials. Seedling growth and quality can be affected by the type and amount of these substrates used in the mixture. Differences in seedling growth and quality can also be significantly affected when fertilization is employed during the nursery growing period. In this study, we assessed the effects of five different growing media and two fertilization regimes on nursery growth, seedling morphology and early post-planting response to drought of Eucalyptus benthamii (Maiden & Cambage) seedlings. First, we evaluated the effects of each media by fertilizer treatment combination on morphological attributes during a nursery growing period. Seedlings raised in fertilized media without rice hulls yielded higher growth, root dry mass, shoot dry mass, total dry mass, Dickson quality index (DQI) scores, and number of first order lateral roots (FOLRs). Root to shoot ratio (R:S ratio) was, however, greater in non-fertilized media that contained rice hulls. We then conducted a simulated outplanting and drought hardiness experiment, in which seedlings were planted in 13.2 L containers and irrigated for one month, followed by the imposition of drought stress. Seedlings in fertilized media composed of sand, topsoil and compost showed greater growth than those in rice hull-containing media, during the irrigation phase. With the discontinuation of irrigation and prevention of precipitation reaching the seedlings, seedlings grown in non-fertilized media containing rice hulls survived longer than those in other media. There were no large differences in survival among other media or between fertilized and other non-fertilized seedlings. Seedling total size and shoot height at the time of planting played a major role in survival. Smaller seedlings with smaller shoot sizes and greater R:S ratios survived longer. This study demonstrates that growing media and fertilization can be manipulated to affect seedling morphology in the nursery and, ultimately, seedling performance and survival under water stressed conditions.


2018 ◽  
Vol 30 (2) ◽  
pp. 198-205 ◽  
Author(s):  
Hitoshi Sori ◽  
Hiroyuki Inoue ◽  
Hiroyuki Hatta ◽  
Yasuhiro Ando ◽  
◽  
...  

In recent years, wet rice farming that does not use chemical herbicides has come in demand owing to the diversified consumer needs, preference for pesticide-free produce, and need to reduce the environmental load. In this paper, we propose a “weeding robot” that can navigate autonomously while weeding a paddy field. The weeding robot removes the weeds by churning up the soil and inhibits the growth of the weeds by blocking-off sunlight. It has two wheels, whose rotational speed is controlled by pulse width modulation (PWM) signals. Moreover, it has capacitive touch sensors to detect the rice plants and an azimuth sensor used when turning. To demonstrate its effect in wet rice culture, we conduct a navigation experiment using the proposed weeding robot in two types of paddy field: conventional and sparse planting. The experiment results demonstrate that the proposed weeding robot is effective in its herbicidal effect, promoting the rice seedling growth and increasing the crop yield.


1983 ◽  
Vol 24 (4) ◽  
pp. 773-775
Author(s):  
Yo Isogai ◽  
Soshiro Takahashi ◽  
Shinji Miyake ◽  
Emiko Kawachi ◽  
Koichi Shudo ◽  
...  

1997 ◽  
Vol 20 (1) ◽  
pp. 195-201 ◽  
Author(s):  
K. R. Sistani ◽  
N. K. Savant ◽  
K. C. Reddy

2019 ◽  
Vol 24 (2) ◽  
pp. 144-150
Author(s):  
Maryati Sari ◽  
◽  
Edi Santosa ◽  
Adolf Pieter Lontoh ◽  
Ani Kurniawati ◽  
...  

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