scholarly journals Influence of Long-term Use of Organic and Inorganic Nutrients on HLB Disease of Wheat under Rice-Wheat Cropping Pattern

2014 ◽  
Vol 9 ◽  
pp. 76-84
Author(s):  
Deepak Bhandari ◽  
Anant P. Regmi
Keyword(s):  
Inorganic Nutrients ◽  
Cropping Pattern ◽  
Thousand Grain Weight ◽  
Farm Yard Manure ◽  
Sesbania Cannabina ◽  
Yield Parameters ◽  
Progress Curve ◽  
Helminthosporium Leaf Blight ◽  
Organic Nutrients

Helminthosporium leaf blight (HLB) is one of the most destructive diseases of wheat in terai (plain) region of Nepal. This study was conducted to   determine the effect of long-term application of various levels of nitrogen   (N), phosphorus (P), potassium (K) and organic nutrients on HLB disease of  wheat. The experiment was superimposed on long-term fertility experiment conducted in RCB design with three replications under rice-wheat cropping pattern at National wheat research program (NWRP), Bhairahawa, Nepal. The treatments include various combinations of nitrogen 100 kg ha-1, phosphorus 0 and 60 kg ha-1, and potash 0, 50 and 100 kg ha-1 with or without Sesbania (Sesbania cannabina) and farm yard manure (FYM). Area   under disease progress curve (AUDPC) was calculated using the disease scores and yield parameters were recorded. Among the inorganic nutrients, long-term deficiency of potash in the field markedly enhances the HLB disease. Application of phosphorus in various doses increased the HLB severity in absence of potash. Regular application of at least potash 50 kg ha- 1 in wheat noticeably reduced the HLB disease. Regular use of FYM 10 ton   ha-1 for long-term considerably reduced the HLB disease but long-term use of Sesbania as green manure did not show any impact on HLB severity.   Inclusion of potash in nutrients considerably increased the yield and   thousand grain weight (TGW) of wheat. In long term, balanced use of   inorganic and organic nutrients with special attention on regular inclusion of   potash and FYM in the nutrient combinations is vital in suppression of HLB disease under rice-wheat cropping pattern.Nepal Agric. Res. J. Vol. 9, 2009, pp. 76-84DOI: http://dx.doi.org/10.3126/narj.v9i0.11644

scholarly journals Dissolved Inorganic Nutrients in the Western Mediterranean Sea (2004–2017)

2019 ◽  
Author(s):  
Malek Belgacem ◽  
Jacopo Chiggiato ◽  
Mireno Borghini ◽  
Bruno Pavoni ◽  
Gabriella Cerrati ◽  
...  
Keyword(s):  
Quality Control ◽  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Inorganic Nutrients ◽  
Marginal Seas ◽  
Western Mediterranean Sea ◽  
Dissolved Inorganic Nutrients ◽  
Climate Shifts ◽  
Quality Control Techniques

Abstract. Long-term time-series are a fundamental prerequisite to understand and detect climate shifts and trends. Understanding the complex interplay of changing ocean variables and the biological implication for marine ecosystems requires extensive data collection for monitoring and hypothesis testing and validation of modelling products. In marginal seas, such as Mediterranean Sea, there are still monitoring gaps, both in time and in space. To contribute filling these gaps, an extensive dataset of dissolved inorganic nutrients profiles (nitrate, NO3; phosphate, PO43−; and silicate, SiO2) have been collected between 2004 and 2017 in the Western Mediterranean Sea and subjected to quality control techniques to provide to the scientific community a publicly available, long-term, quality controlled, internally consistent biogeochemical data product. The database includes 870 stations of dissolved inorganic nutrients sampled during 24 cruises, including temperature and salinity. Details of the quality control (primary and secondary quality control) applied are reported. The data are available in PANGAEA (https://doi.org/10.1594/PANGAEA.904172, Belgacem et al. 2019).

scholarly journals Field-based investigation of aged biochar coupled with summer legumes effect on wheat yield in Pakistan

2020 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Hafeez Ur Rahim ◽  
Sajjad Ahmad ◽  
Zaid Khan ◽  
Muhammad Ayoub Khan
Keyword(s):  
Maximum Yield ◽  
Wheat Yield ◽  
Wheat Crop ◽  
Human Consumption ◽  
Thousand Grain Weight ◽  
Data Set ◽  
Different Types ◽  
Biological Yield ◽  
Soil Fertility Improvement

There is a debate about whether the aged biochar effect can increase the crop yield or not. Herein, a field-based experimental data set and analysis provide the information on the aged biochar effect coupled with summer legumes on the yield of subsequent wheat. Briefly, in summer 2016, three different types of legumes i.e. mungbean, sesbania, and cowpea were grown with the intention of grain for human consumption, green manuring for soil fertility improvement, and fodder for livestock consumption. A fallow was also adjusted in the experiment with the purpose of comparison. Biochar was added to each experimental plot in triplicates at the rate of 0, 5, and 10 tons ha-1. After the harvesting of legumes, the biomass of each sesbania treatment plot was mixed in the field while the biomass of mungbean and cowpea were removed from each respective plot. To investigate the aged biochar effect, the wheat crop was grown on the same field layout and design (randomized complete block) of legumes. The data analysis highlighted that significantly maximum grain yield (kg ha-1), biological yield (kg ha-1); thousand-grain weight (g), and straw yield (kg ha-1) were obtained in the plots mixed with sesbania. Regarding the aged biochar effect, maximum yield was obtained in the plots with 10 tons ha-1treatment dose. Additionally, the interaction of aged biochar coupled with legumes was non-significant. In conclusion, this work could prove that aged biochar coupled with summer legumes enhanced the yield of subsequent wheat on a sustainable basis due to its long-term numerous benefits to the soil-plant system.

scholarly journals Contrasting Impacts of Long-Term Application of Biofertilizers and Organic Manure on Grain Yield of Winter Wheat in North China Plain

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 312 ◽  
Author(s):  
Amara Cisse ◽  
Adnan Arshad ◽  
Xiaofen Wang ◽  
Fanta Yattara ◽  
Yuegao Hu
Keyword(s):  
Grain Yield ◽  
North China Plain ◽  
North China ◽  
Farm Yard Manure ◽  
Grain Yields ◽  
The North ◽  
The North China Plain ◽  
Pig Farm ◽  
1000 Grain Weight

The effects of long-term incorporation of organic manure and biofertilizers have been investigated on winter wheat in the North China Plain (NCP). The five-year field experiment (2013–2018) has illustrated the responses of grain yield and yield components. Seven fertilization approaches, included pig farm-yard-manure and biofertilizers amendments combined with five NPK% drop levels of chemical fertilizer ratio + organic fertilizer + biofertilizer (0, C+O+B) 25%, CL4; 50%, CL3; 75%, CL1; and 100%, CL0), without fertilizer as control (CK), in NCP during the years 2013–2018. Results showed that the grain yields of CL1 and CL2 were equivalent to CL0 in all growing seasons except 2014/2015. The grain yields of CL4 were 29.9% to 46.6% lower than that of CL0 during 2014/2015, 2016/2017, and 2017/2018. The valuable spike-number, grain number per-spike, and 1000-grain weight showed significant variations among different growing periods. Regression analysis of grain yield and yield components indicated that number grains per-spike showed significant increase in seed yield formation. The 1000-grain weight was the major parameter that influenced yield of moderate and low yielding periods, respectively. The results revealed that application of 30 m3 ha−1 pig farm-yard-manure and 20 kg ha−1 biofertilizers has reduced at least 50% of the NPK fertilization without dropping grain yields in the North China Plain.

scholarly journals Pre-Anthesis Nutritional Status of Spelt Wheat as a Tool for Predicting the Attainable Grain Yield

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 558
Author(s):  
Witold Grzebisz ◽  
Przemysław Barłóg ◽  
Jan Kryszak ◽  
Remigiusz Łukowiak
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Nutrient Content ◽  
Thousand Grain Weight ◽  
Reliable Prediction ◽  
Spelt Wheat ◽  
Nutritional Factor ◽  
Supply Potential ◽  
Term Field

The nutrient content in leaves of spelt wheat at late heading is crucial for the development of its yield components, and in consequence, grain yield. This hypothesis was verified based on data from long-term field experiments with four potassium (K) treatments based on the progressive K supply potential to plants from soil and fertilizer and two magnesium treatments (−Mg, +Mg). The number of ears (NE) and the number of grains per ear (NGE) responded significantly to the increased K and Mg supply. The grain yield was positively correlated with NGE. A shortage of N and Mg resulted in a lower NGE, whereas a shortage of N and Zn, concomitant with an excess of Ca, resulted in a significant decrease in NGE and thousand-grain weight. This effect can be diminished by the increased content of Mg. It has been revealed that the content of Zn in leaves of spelt wheat at heading is an important nutritional factor effectively controlling N, P and Fe contents in grain, and consequently, grain yield. This study showed that the content of nutrients in spelt leaves measured just before anthesis can be used for reliable prediction of the grain yield.

Long-term organic fertilization effect on chernozem structure

2013 ◽  
Vol 27 (1) ◽  
pp. 81-87 ◽  
Author(s):  
A. Słowińska-Jurkiewicz ◽  
M. Bryk ◽  
V.V. Medvedev
Keyword(s):  
Organic Matter ◽  
Sugar Beet ◽  
Crop Rotation ◽  
Morphological Analysis ◽  
Ground Level ◽  
Organic Fertilization ◽  
Farm Yard Manure ◽  
Soil Structures ◽  
Fertilization Effect

Abstract The objective of the study was to examine the structure of typical Ukrainian chernozem developed on loess, which (I) had been fertilized by standard crop rotation since 1912 with farm yard manure at the rate of 16 t ha-1 and (II) had not been fertilized with farm yard manure by sugar beet monoculture since 1929. After harvest of winter wheat and sugar beet, the samples of undisturbed structure were taken from 5 layers of both profiles: 0-8, 10-18, 20-28, 30-38, and 40-48 cm. The morphological analysis of the structure of the investigated chernozem revealed that the most visible differences between the soil structures of the two pedons occurred in their superficial layers. The 0-18 cm layer of the soil in the experiment I had an aggregate structure, whereas analogous layer of the soil in experiment II was much more compacted. Below about 30 cm from the ground level both pedons had very similar structure. For the soil in the experiment I an appropriate crop rotation and regular supplies of organic matter allowed for preservation of a favourable structure even in the upper layers - in contrast to the soil in the experiment II.

scholarly journals Effect of heat stress at anthesis on yield formation in winter wheat  

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 139-144 ◽  
Author(s):  
Hlaváčová Marcela ◽  
Klem Karel ◽  
Smutná Pavlína ◽  
Škarpa Petr ◽  
Hlavinka Petr ◽  
...  
Keyword(s):  
Heat Stress ◽  
High Temperatures ◽  
Wheat Yield ◽  
Weather Conditions ◽  
Similar Response ◽  
Thousand Grain Weight ◽  
Yield Parameters ◽  
Temperature Regimes ◽  
Response To Temperature ◽  
Yield Formation

Heat stress around anthesis is considered to have an increasing impact on wheat yield under the ongoing climate change. However, the effect of high temperatures and their duration on formation of individual yield parameters is still little understood. Within this study, the effect of high temperatures applied during anthesis for 3 and 7 days on yield formation parameters was analysed. The study was conducted in growth chambers under four temperature regimes (daily temperature maxima 26, 32, 35 and 38°C). In the periods preceding and following heat stress regimes the plants were cultivated under ambient weather conditions. The number of grains per spike was reduced under temperatures ≥ 35°C in cv. Bohemia and ≥ 38°C in cv. Tobak. This resulted in a similar response of spike productivity. Thousand grain weight showed no response to temperature regime in cv. Tobak, whereas in cv. Bohemia, a peak response to temperature with maximum at 35°C was observed. The duration of heat stress had only little effect on most yield formation parameters.  

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