scholarly journals Growth and yield performance of rice cultivars (Oryza sativa L.) under seaweed extract and inorganic fertilizer

2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Helen Grace Guillermo Sebastian

A field experiment was conducted once at Isabela State University, Jones, Isabela, Philippines during the wet season of 2018 to determine the impact of seaweed extract added with varying levels of inorganic fertilizer on the growth and yield of upland rice (Oryza sativa L.) cultivars. In the study, five fertilizer levels and a farmer’s practice as a control combined with seaweed extract was used. The study used Randomized Blocks in a Factorial Scheme with six treatments replicated thrice as follows: Factor A: V1-Pinilisa, V2-Palawan and Factor B: F1-150-100 kg NP ha-1 (Farmer’s Practice), F2-40-10 kg NP ha-1 (100% Recommended Rate), F3-20-5 kg NP ha-1 (50% Recommended Rate), F4-40-10 kg NP ha-1 + 3 L/ha. Seaweed extract, F5-20-5 kg NP ha-1 + 3 L/ha. Seaweed extract and F6-3L/ha. Seaweed Extract. The findings revealed that seaweed extract combined with inorganic fertilizer application influenced the growth and yield of rice. Pinilisa cultivar obtained a higher yield compared to the Palawan cultivar. The combination of seaweed extract and inorganic fertilizer shows highly significant differences especially concerning the number of productive tillers, filled grains, 1000 grain weight and straw weight. The return on investment showed that Pinilisa cultivar fertilized with 3 L seaweed extract is more economical in upland rice obtaining the highest with 95.47%. Seaweed extract as foliar fertilizer can be applied not only in rice but also in other crops. Application of seaweed extract on rice can reduce the amount of fertilizers.

2019 ◽  
Vol 13 (3) ◽  
pp. 217-226 ◽  
Author(s):  
Adriano Stephan Nascente ◽  
Anna Cristina Lanna ◽  
Thatyane Pereira de Sousa ◽  
Amanda Abdallah Chaibub ◽  
Alan Carlos Alves de Souza ◽  
...  

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Hapsoh ◽  
Wawan ◽  
Isna Rahma Dini ◽  
Devi Andriani

This study aims to test the bio-fertilizer formulation with Bacillus cereus bioactivator and to obtain the best bio-fertilizer formulation for the growth and yield of upland rice (Oryza sativa L.) in peat medium. The research was conducted in the experimental garden and Soil Science Laboratory, Faculty of Agriculture, University of Riau from July to October 2018. The study was carried out experimentally using a completely randomized design (RAL) with the treatment tested was the formulation of Bacillus cereus (F): F0: 100 ml Bacillus cereus without formulation, F1: 100 ml Bacillus cereus inoculant+74% bagasse+13% dolomite+13% zeolite, F2: 100 ml Bacillus cereus inoculant+74% rice husk+13% zeolite+13% dolomite, F3: 100 ml inoculant Bacillus cereus+74% solid+13% dolomite+13% zeolite, F4: 100 ml Bacillus cereus inoculant+74% tkks+13% zeolite+13% dolomite. The data obtained were analyzed statistically using variance fingerprints. The average result of the analysis was continued with the BNJ test at the 5% level. The results showed that administration of Bacillus cereus without formulation and with the formulation of solid organic matter of rice husks, solids and oil palm empty bunches showed a good response to the amount of chlorophyll and yield of upland rice plants.


2019 ◽  
Vol 1 (3) ◽  
pp. 295-306
Author(s):  
Atrisina Allamah ◽  
Hapsoh Hapsoh ◽  
Wawan Wawan ◽  
Isna Rahma Dini

Limitations of productive land causing agricultural extension leads on marginal land. Peatlands are one type of land including the criteria for marginal land. Destruction of peatland ecosystems arising from land management and the selection of one commodity which is not in accordance with the characteristics of peatland. Damage criteria peat in government regulations to function cultivation is more than 0,4 m below the peat surface. One alternative for the agricultural development of peatlands associated with groundwater levels ≤0,4 m to do with the development of food crops, especially rice crops. This is because the root system of the rice crop is only about 40-50 cm categorized shallow roots, thus suitable for development on peatland shallow. This study aims to determine the response growth and yield of rice plants with organic and inorganic fertilizer application by microbial cellulolytic on peat soil. The experimental was conducted from November 2017 to January 2018 in Laboratory of Soil Science and Plant Laboratory, Faculty of Agriculture at Universitas of Riau. The research was conducted using a completely randomized design (CRD), which consists of 7 treatments and 4 replicates so on May 28 experimental units. As for the treatment Control, 50% inorganic fertilizer, 100% inorganic fertilizer, 80 grams of composted rice straw, 160 grams of litter rice straw + 160 ml consortium of microbes, 80 grams of composted rice straw + 50% inorganic fertilizer, 160 grams of rice straw litter + 160 ml of microbial consortium selulitik + 50% inorganic fertilizer. The results showed that addition of 160 g of rice straw litter + 160 ml of microbial + 50% inorganic fertilizer consortium was the best treatment by producing tillers reaching 54,87 tillers, the number of grain per panicle reached 130.57 grains with crop grain weight reaching 57.27 grams, with a percentage of empty the lowest is 3.62%.


2017 ◽  
Vol 15 (1) ◽  
pp. 68-80 ◽  
Author(s):  
JC Biswas ◽  
MB Hossain ◽  
AK Choudhury ◽  
N Kalra ◽  
M Maniruzzaman

Climate change is influencing rice (Oryza sativa L.) production in some agro-ecological regions of Bangladesh. The impact of seasonal climatic variability on rainfed lowland rice (transplanted aman or T. Aman) yield in north-west Bangladesh was analyzed based on historic weather data from 1971 to 2010. Wet season maximum and minimum temperatures were increasing by 0.0174 and 0.0083°C year-1, respectively. Sunshine hours for the same   period have decreased by 0.0259-0.027 hr year-1. The representative concentration pathway (RCP) based projection showed increased maximum and minimum temperatures by 0.42-1.51 and 0.79-1.34°C, respectively in 2050. T. Aman rice yield could be reduced by 0.17-0.37 t ha-1 if temperature rises by 1°C. If sunshine hour decreases by 1 hr, yield reduction could be 0.20 t ha-1. Combined effect of increased minimum temperature and decreased sunshine hours will govern T. Aman rice yield in future.The Agriculturists 2017; 15(1) 68-80


Jurnal Solum ◽  
2018 ◽  
Vol 15 (1) ◽  
pp. 17 ◽  
Author(s):  
Rahmi Yulia ◽  
Nelvia Nelvia ◽  
Erlida Ariani

The research aims to study the effect of mixture of cocopeat and rock phosphate on growth and yield of three varieties of upland rice in Ultisols medium. The research was conducted at the Green House of the Faculty of Agriculture, University of Riau, Pekanbaru from March to August 2017. The research used Split Plot Design. The main plot were upland rice consist of three varieties (Situ Bagendit, Situ Patenggang and Inpago 8). The subplots were mixture of cocopeat 10 t ha-1 with rock phosphate (RP) doses 0, 30, 45, and 60 P2O5 kg ha-1. The parameters observed were plant height, number of maximum tillers and productive tillers, panicle length, flowering age, number of grain panicle-1, weight of dry milled grain and weight of 1000 grain. The results showed that the application of mixture of cocopeat doses 10 t ha-1 and RP doses 30 – 60 P2O5 kg ha-1 have effect to plant height, panicle length, and weight 1000 grain for Situ Bagendit, Situ Patenggang and Inpago 8 compare to without RP, but tended increase number of maximum and productive tillers and decrease flowering age. The application cocopeat doses 10 t ha-1 and RP doses 30 P2O5 kg ha-1 increased number of filled grain panicle-1 and weight of dry milled grain on three varieties, weight of dry milled grain Situ Patenggang > Inpago 8 > Situ Bagendit on each doses of RP and have number of productive tillers of these varieties 1,5 – 2  is greater than its descriptions.Keywords : rock phosphate, ultisol, upland rice


Sign in / Sign up

Export Citation Format

Share Document