scholarly journals Effect of hydrogel on the performance of aerobic rice sown under different techniques

2011 ◽  
Vol 57 (No. 7) ◽  
pp. 321-325 ◽  
Author(s):  
A. Rehman ◽  
R. Ahmad ◽  
M. Safdar
Keyword(s):  
Soil Moisture ◽  
Yield Components ◽  
Economic Loss ◽  
Growth And Yield ◽  
Aerobic Rice ◽  
Water Deficiency ◽  
Crop Water ◽  
Moisture Contents ◽  
Moisture Percentage ◽  
Germinated Seeds

Declining water is a great concern in production of rice, because rice is more sensitive to water deficiency which restricts normal rice growth resulting in enormous economic loss. A field experiment was conducted to study the effect of hydrogel in different sowing techniques of aerobic rice viz. flat, ridge, and bed sowing. Observations on soil moisture percentage before every irrigation, yield, and yield components of rice were recorded. Application of hydrogel improved soil moisture contents in all the three sowing techniques as compared to soil without hydrogel. More soil moisture contents met the crop water needs and increased the number of germinated seeds. As a consequence of more emergence and better stand establishment, the yield components were also improved increasing the yield of rice in hydrogel amended soil in all sowing techniques. However, sowing of rice on beds with hydrogel amendment was found the most effective; it not only improved the performance of aerobic rice but also enhanced growth and yield of aerobic rice more than other sowing techniques.

scholarly journals Zonal Tillage as Innovative Element of the Technology of Growing Winter Wheat: A Field Experiment under Low Rainfall Conditions

Agriculture ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 105 ◽  
Author(s):  
Iwona Jaskulska ◽  
Dariusz Jaskulski ◽  
Marek Różniak ◽  
Maja Radziemska ◽  
Lech Gałęzewski
Keyword(s):  
Soil Moisture ◽  
Winter Wheat ◽  
Field Experiment ◽  
Grain Yield ◽  
Yield Components ◽  
Growth And Yield ◽  
Soil Tillage ◽  
Positive Dependence ◽  
Previous Crop ◽  
Plant Emergence

Zonal tillage, including strip-till, can have a positive effect on soil properties, seed germination, plant emergence, growth, and yield of crops. The aim of this two-factor field experiment was to compare different technologies of basic soil tillage, fertilisation, and sowing of winter wheat carried out after two post-harvest agrotechnical practises in a region with low rainfall. The three treatments of the first factor were: conventional technology (CT)—plough tillage, pre-sowing fertilisation, seedbed preparation and sowing; reduced technology (RT)—plough tillage replaced with deep loosening and (ST)—one pass strip-till technology using a hybrid machine. Agrotechnical practises carried out after the harvest of the previous crop were the second factor treatments, i.e., crushed straw and shallow tillage (TS), mulch from crushed straw (MS). The measurement of the treatment effects included changes in soil moisture, plant emergence, yield components and their correlation, grain yield, and the dependence of the yield components on soil moisture. Wheat growing in ST technology resulted in a higher soil moisture than in RT and CT. Only immediately after winter was the soil moisture similar. Grain yield in ST was similar as in CT and significantly, up to 10.4%, higher than in RT. The higher ST grain yield resulted from uniform plant emergence, greater ear density, and grain weight per ear. The correlation between yield components was weaker in ST than in CT and RT. The positive dependence of the size of the crop components on soil moisture was also weaker. The agrotechnical practises performed right after the previous crop harvest affected neither the soil moisture during the growing season of winter wheat, nor the grain yield and its components.

Effectiveness of nitrogen and bio-fertilizer choice for improving growth and yield of hybrid rice (Oryza sativa L.) during dry season

2020 ◽  
Vol 57 (4) ◽  
pp. 302-309
Author(s):  
Sukanta Pal ◽  
Megha Sana ◽  
Hirak Banerjee ◽  
Lhingneikim Lhungdim
Keyword(s):  
Yield Components ◽  
Hybrid Rice ◽  
Growth Parameters ◽  
Oryza Sativa L ◽  
Block Design ◽  
Growth And Yield ◽  
Combined Application ◽  
Randomized Block Design ◽  
N Dose ◽  
Dry Seasons

Effect of nitrogen and bio-fertilizer on growth and productivity of hybrid rice (cv. PHB 71) was assessed during dry seasons of 2017 and 2018 at Research Farm of BCKV under new alluvial zone of West Bengal. The experiment was laid out in factorial randomized block design with 12 treatment combinations having 4 levels of N and 3 types of bio-fertilizer replicated thrice. Application at 180 kg N/ha produced tallest plants at 90 DAT with maximum LAI (60 DAT), DMA (90 DAT), tillers/hill (90 DAT) and CGR (30-60 & 60-90 DAT). The same N rate resulted in highest panicles/m2, panicle length, panicle weight, filled grains/panicle and 1000-grain weight. A decrease in N dose from 180 to 150 kg/ha caused reduction in all those yield components; however, the variation was non-significant except for number of panicles/m2. Maximum grain yield, straw yield and harvest index was also achieved with 180 kg N/ha accounting 120.1, 34.9 and 32.8% more than the values obtained with zero-N; however, it was statistically at par with the yields and HI obtained with 150 kg N/ha. The Azospirillum application increased all the growth parameters, yield components and yield of hybrid rice over other tested bio-fertilizers (Azospirillum > PSB > K mobilizer), accounting 5.9 and 8.8% more than the yields obtained with PSB and K mobilizer. The interaction of N and bio-fertilizer exerted significant effect on growth attributes but failed to record any significant variations in yield components and yield of hybrid rice. The maximum economic benefit was achieved with combined application of 180 kg N/ha and Azospirillum.

Effects of early season waterlogging on maize growth and yield

1987 ◽  
Vol 38 (1) ◽  
pp. 27 ◽  
Author(s):  
WK Mason ◽  
KE Pritchard ◽  
DR Small
Keyword(s):  
Plant Growth ◽  
Threshold Level ◽  
Growth And Yield ◽  
Yield Losses ◽  
Crop Water ◽  
Maize Crop ◽  
Early Season ◽  
Cultural Methods ◽  
Irrigation Treatments ◽  
Final Harvest

Five irrigation treatments (0, 2, 6 and 24 h ponding in furrows plus a 6-h flooded treatment) were applied at the first two irrigations after emergence of a maize crop. Water was ponded for 6 h in the furrows or on the flooded plots at each of the 10 subsequent irrigations.The irrigation treatments had a significant effect on plant growth, resulting in final DM yields of 22.3, 19.7, 19.2, 18.7 and 13.9 t/ha for the 0, 2,6, 24 h furrow irrigations and the 6 h flood treatment respectively. The 2, 6 and 24 h furrow treatments did not perform differently in any of the parameters measured, indicating that a threshold level of waterlogging was reached in all three compared with the zero ponding treatment.Nitrogen applications of 25 kg N/ha to the soil or foliage prior to each of the first two irrigations did not reduce the severity of the waterlogging treatments, despite herbage N levels being significantly depressed in the flooded plots. Similarly, soil fungicide application did not mitigate the waterlogging effects.Individual plants within the treatment populations differed greatly in their response to the waterlogging treatments. The effect on individual plants persisted until final harvest. Cultural methods which may prevent the yield losses associated with the first irrigation of maize are discussed.

Effect of Bromus inermis Leyss Planting on Dynamic Changes of Soil Moisture Contents on the Bare Slope

2013 ◽  
Vol 807-809 ◽  
pp. 1648-1652
Author(s):  
Tie Jun Sun ◽  
Baderihu Tajilake
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Moisture Content ◽  
Regulatory Mechanism ◽  
Dynamic Balance ◽  
Bromus Inermis ◽  
Dynamic Changes ◽  
Moisture Contents ◽  
Biological Characters ◽  
Underground Biomass

Experiment was executed to plant eco-grass of Bromus inermis Leyss on 15°bare slopes, and study effect of biological characters on dynamics of soil moisture contents. The results indicated that vegetation restored quickly on the bare slope after the eco-grass planted. There were 2473.4 kg/hm2 of overground biomass and 1744.1kg/hm2 of underground biomass, and 70% of underground biomass was in 0-10cm layer of soil. Meanwhile, there was a regulatory mechanism of soil moisture content for Bromus inermis Leyss. When rainfall was enough, soil moisture content in 0-80 cm layer could reach to the most of 26.83% quickly this year. Next it could decline near to the first value of 19.81% after rainfall stopped, and keep a dynamic balance between 19.48% and 19.96%. Moreover, the regulatory mechanism realized though underground biomass, and was clearer with underground biomass increasing, especially in the 0-40cm layer of soil.

Toxicity of fipronil to Folsomia candida in contrasting tropical soils and soil moisture contents: effects on the reproduction and growth

Ecotoxicology ◽  
2021 ◽  
Author(s):  
Thuanne Braúlio Hennig ◽  
Paulo Roger Lopes Alves ◽  
Tânia Toniolo ◽  
Felipe Ogliari Bandeira ◽  
William Eduardo dos Santos ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Tropical Soils ◽  
Folsomia Candida ◽  
Moisture Contents

Time of Salt Stress Affects Growth and Yield Components of Irrigated Wheat

1994 ◽  
Vol 86 (1) ◽  
pp. 100-107 ◽  
Author(s):  
Leland E. Francois ◽  
Catherine M. Grieve ◽  
Eugene V. Maas ◽  
Scott M. Lesch
Keyword(s):  
Salt Stress ◽  
Yield Components ◽  
Growth And Yield ◽  
Irrigated Wheat
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