scholarly journals Tomato (Lycopersicon esculentum Mill.) anatomical, physiological, biochemical and production responses to drought stress - A mini-review essay

2021 ◽  
Vol 27 ◽  
Author(s):  
M. Massimi
Keyword(s):  
Drought Stress ◽  
Review Essay ◽  
Agricultural Practices ◽  
Significant Loss ◽  
Climatic Conditions ◽  
Growth And Yield ◽  
Natural Factor ◽  
Tomato Crop ◽  
Biochemical Alterations ◽  
The Impact

The cultivated plant climate association in agricultural yields is getting expanded consideration with regards to changing climatic conditions. Abiotic stressors can lead to morpho-anatomical, physiological, and biochemical alterations in harvests, resulting in a significant loss of profit. A comprehension of ecological elements and their communication with physiological cycles is critical for improving agricultural practices. Drought stress is among the main natural factor affecting plant development, growth, and yield measures. Assessing the impact of environmental change and atmospheric variability on tomato crop output will require a thorough understanding of this stress element. The physiology, development, improvement, yield, and quality of the tomato crop are all affected by dry season stress. This mini-review essay presents the most prominent features about the effects of drought stress on tomato crop plant physiology and production, with specific highlighting for the complex relationship between drought stress, and nutrients uptake.

scholarly journals Nepal, a multi-hazard risk country: Spatio-temporal analysis

2019 ◽  
Vol 58 ◽  
pp. 145-152
Author(s):  
Ganesh Kumar Jimee ◽  
Kimiro Meguro ◽  
Amod Mani Dixit
Keyword(s):  
Temporal Analysis ◽  
Significant Loss ◽  
Climatic Conditions ◽  
Decision Makers ◽  
Economic Conditions ◽  
Tectonic Processes ◽  
Active Tectonic ◽  
Spatio Temporal ◽  
The Impact ◽  
Complex Geology

Nepal, though covers small area of the earth, exposes complex geology with active tectonic processes, high peaks, sloppy terrain and climatic variation. Combination of such geo-physical and climatic conditions with existing poor socio-economic conditions, unplanned settlements, rapidly increasing population and low level of awareness has put the country in highest risk to multi-hazard events. Fires, floods, landslides and epidemics are the most frequent hazard events, which have cumulatively caused a significant loss of lives and property every year. However, due to diversity in physiographic, climatic and socio-economic conditions within the country, the type, frequency and degree of the impact of such events differs in different places. During the period of 46 years (1971-2016), an average of 2 events have been occurred causing 3 deaths/missing every day. Disaster events occurred most frequently during the months of April, July and August, while relatively lesser number of events have been reported during January, November and December. However, earthquakes have been reported in different months, regardless with the season. This paper is an effort to analyse the spatial distribution and temporal variation of disaster events in Nepal. Further it has drawn a trend of disasters occurrence in Nepal, which will help the decision makers and other stakeholders for formulating Disaster Risk Management (DRM) plan and policies on one hand and heighten citizens’ awareness of against disasters on the other.

scholarly journals WEATHER SENSITIVITY OF RICE YIELD: EVIDENCE FROM INDIA

2014 ◽  
Vol 05 (04) ◽  
pp. 1450011 ◽  
Author(s):  
ANUBHAB PATTANAYAK ◽  
K. S. KAVI KUMAR
Keyword(s):  
Rice Yield ◽  
Negative Impact ◽  
Significant Loss ◽  
Climatic Conditions ◽  
Weather Data ◽  
Weather Sensitivity ◽  
Daily Weather Data ◽  
Level Information ◽  
Maximum Temperatures ◽  
The Impact

This study estimates the weather sensitivity of rice yield in India, using disaggregated (district) level information on rice and high resolution daily weather data over the period 1969–2007. Compared to existing India specific studies on rice which consider only the effects of nighttime (minimum) temperature, the present study takes into account the effects of both nighttime and daytime (maximum) temperatures along with other weather variables on rice yield. The results suggest that both nighttime and daytime temperatures adversely affect rice during different growth phases. The effect of higher nighttime temperature on rice yield was much lower than those estimated by previous studies. Further, the negative impact of higher daytime temperature on rice yield was much larger than the impact due to higher nighttime temperature. The study further estimates that average rice yield would have been 8.4% higher had the pre-1960 climatic conditions prevailed during the period of study. This translates into an annual average loss of 4.4 million tons/yr or a cumulative loss of 172 million tons over the 39 year period for India. The paper argues that such significant loss in rice production under climate change conditions in future will have strong implications for the region's food-security and poverty, given that a large number of producers and consumers depend on rice for their livelihood and sustenance.

scholarly journals Challenges of soil carbon sequestration in the NENA region

SOIL ◽  
2018 ◽  
Vol 4 (3) ◽  
pp. 225-235 ◽  
Author(s):  
Talal Darwish ◽  
Thérèse Atallah ◽  
Ali Fadel
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Agricultural Practices ◽  
Belowground Biomass ◽  
Climatic Conditions ◽  
Soil Carbon Sequestration ◽  
Land Capability ◽  
The Status ◽  
Irrigated Crops ◽  
The Impact

Abstract. The Near East North Africa (NENA) region spans over 14 % of the total surface of the Earth and hosts 10 % of its population. Soils of the NENA region are mostly highly vulnerable to degradation, and future food security will much depend on sustainable agricultural measures. Weather variability, drought and depleting vegetation are dominant causes of the decline in soil organic carbon (SOC). In this work the status of SOC was studied, using a land capability model and soil mapping. The land capability model showed that most NENA countries and territories (17 out of 20) suffer from low productive lands (> 80 %). Stocks of SOC were mapped (1:5 000 000) in topsoils (0–0.30 m) and subsoils (0.30–1 m). The maps showed that 69 % of soil resources are shown to have a stock of SOC below the threshold of 30 tons ha−1. The stocks varied between ≈10 tons ha−1 in shrublands and 60 tons ha−1 for evergreen forests. Highest stocks were found in forests, irrigated crops, mixed orchards and saline flooded vegetation. The stocks of soil inorganic carbon (SIC) were higher than those of SOC. In subsoils, the SIC ranged between 25 and 450 tons ha−1, against 20 to 45 tons ha−1 for SOC. Results highlight the contribution of the NENA region to global SOC stock in the topsoil (4.1 %). The paper also discusses agricultural practices that are favorable to carbon sequestration such as organic amendment, no till or minimum tillage, crop rotation and mulching and the constraints caused by geomorphological and climatic conditions. The effects of crop rotations on SOC are related to the amounts of above and belowground biomass produced and retained in the system. Some knowledge gaps exist, especially in aspects related to the impact of climate change and effect of irrigation on SOC, and on SIC at the level of the soil profile and soil landscape. Still, major constraints facing soil carbon sequestration are policy-relevant and socioeconomic in nature, rather than scientific.

scholarly journals Trichothecenes in Food and Feed, Relevance to Human and Animal Health and Methods of Detection: A Systematic Review

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 454
Author(s):  
Magdalena Polak-Śliwińska ◽  
Beata Paszczyk
Keyword(s):  
Environmental Conditions ◽  
Animal Health ◽  
Agricultural Practices ◽  
Climatic Conditions ◽  
Toxic Effects ◽  
Farm Animals ◽  
Future Research ◽  
Low Level ◽  
Food And Feed ◽  
The Impact

Trichothecene mycotoxins are sesquiterpenoid compounds primarily produced by fungi in taxonomical genera such as Fusarium, Myrothecium, Stachybotrys, Trichothecium, and others, under specific climatic conditions on a worldwide basis. Fusarium mold is a major plant pathogen and produces a number of trichothecene mycotoxins including deoxynivalenol (or vomitoxin), nivalenol, diacetoxyscirpenol, and T-2 toxin, HT-2 toxin. Monogastrics are sensitive to vomitoxin, while poultry and ruminants appear to be less sensitive to some trichothecenes through microbial metabolism of trichothecenes in the gastrointestinal tract. Trichothecene mycotoxins occur worldwide however both total concentrations and the particular mix of toxins present vary with environmental conditions. Proper agricultural practices such as avoiding late harvests, removing overwintered stubble from fields, and avoiding a corn/wheat rotation that favors Fusarium growth in residue can reduce trichothecene contamination of grains. Due to the vague nature of toxic effects attributed to low concentrations of trichothecenes, a solid link between low level exposure and a specific trichothecene is difficult to establish. Multiple factors, such as nutrition, management, and environmental conditions impact animal health and need to be evaluated with the knowledge of the mycotoxin and concentrations known to cause adverse health effects. Future research evaluating the impact of low-level exposure on livestock may clarify the potential impact on immunity. Trichothecenes are rapidly excreted from animals, and residues in edible tissues, milk, or eggs are likely negligible. In chronic exposures to trichothecenes, once the contaminated feed is removed and exposure stopped, animals generally have an excellent prognosis for recovery. This review shows the occurrence of trichothecenes in food and feed in 2011–2020 and their toxic effects and provides a summary of the discussions on the potential public health concerns specifically related to trichothecenes residues in foods associated with the exposure of farm animals to mycotoxin-contaminated feeds and impact to human health. Moreover, the article discusses the methods of their detection.

scholarly journals Growth and Yield of Various Soy Varieties (Glycine max L. Merr.) on Drought Stress

2020 ◽  
Vol 8 (3) ◽  
pp. 228-235
Author(s):  
Rusmana Rusmana ◽  
◽  
Eltis Panca Ningsih ◽  
Amelia Justika ◽  
◽  
...  
Keyword(s):  
Drought Stress ◽  
Design Method ◽  
Block Design ◽  
Growth And Yield ◽  
Growth Responses ◽  
Food Ingredient ◽  
Randomized Block Design ◽  
Two Factors ◽  
Weather Changes ◽  
The Impact

Soybeans become a source of plant protein and an essensial food ingredient in Indonesia. Extreme climate change causes weather changes; the impact is a long dry season which results in drought. Efforts to deal with drought stress are carried out using drought-tolerant soybean varieties that drop of production can be suppressed. The purpose of the study is to study growth responses for several different soybean varieties with drought-stricken conditions. The research was conducted from October 2019 to January 2020 at the Green House Agroecotechnology Laboratory of the Faculty of Agriculture, University of Sultan Ageng Tirtayasa, Banten. Factorial randomized block design method was then used which consists of two factors and three repetition. The first factor were that the Varieties consists of V1: Argo mulyo variety; V2: Deja 2 and V3 varieties: Dena varieties. The second factor was drought percentage comprising k1: 100% ATT (Groundwater Available); k2: 80% ATT, k3: 60% ATT and k4: 40% ATT. The results showed that differences in varieties and drought stress did not significantly affect the growth and yield of soybean crops. Argo Mulyo varieties are superior to drought stress compared to Deja 2 and Dena varieties from the weight of 100 seeds. No interaction of different soybeans varieties treatment and drought stress on all observation parameters.

scholarly journals Impact of main tillage methods on weed infestation of crops in the winter maize, wheat, dried peas rotation

2021 ◽  
Vol 262 ◽  
pp. 01014
Author(s):  
Khasan Tarchokov ◽  
Magomed Chochaev ◽  
Julietta Tutukova
Keyword(s):  
Agricultural Practices ◽  
Steppe Zone ◽  
Climatic Conditions ◽  
Soil Treatment ◽  
Weed Suppression ◽  
Weed Plants ◽  
Cultivation Technology ◽  
The Republic ◽  
The Impact ◽  
Tillage Methods

The paper presents ways of suppressing weed plants, including a complex of agricultural practices aimed at reducing their harmful effects and further distribution. Many methods to control weed vegetation are known in the field cultivation technology. They differ in terms of the amount of expired costs and labor, economic and technical efficiency. As a result of our research, the impact of some tillage methods on the effectiveness of weed suppression on the main field crops in selected Kabardino-Balkaria natural climatic conditions is identified. The goal of the research is to determine the effectiveness of main tillage methods on the Ciscaucasian carbonate chernozems in different zones of the republic. In research conducted in 2015-2018 in the Kabardino-Balkaria steppe zone in crop rotation, with an alternation of maize-winter wheat-pea crops in the suppression of weed plants, a soil treatment system is allocated when the soil treatment on 12-14cm is combined with plowing to a depth of 25-28 cm with the use of related chemical herbicides of various spectrum of actions.

scholarly journals Using of Microbial Fertilizer as Biostimulant Alleviates Damage from Drought Stress in Guar (Cyamopsis Tetragonoloba (L.) Taub.) Seedlings

2019 ◽  
Vol 76 ◽  
pp. 147-157
Author(s):  
Alpaslan Kusvuran ◽  
Sebnem Kusvuran
Keyword(s):  
Drought Stress ◽  
Foliar Application ◽  
Field Capacity ◽  
Water Holding Capacity ◽  
Growth And Yield ◽  
Total Phenolic ◽  
Cyamopsis Tetragonoloba ◽  
Available Water ◽  
The Impact ◽  
Water Holding

Drought is a significant environmental stress that limits plant growth and yield. In this study, an investigation of guar, grown under different drought level conditions [(S0: 100% of field capacity), S1 (depletion of 75% the available water holding capacity), S2 (depletion of 50% the available water holding capacity), S3 (depletion of 25% the available water holding capacity), S4 (no applied irrigation water)] with regards to the impact of Chlorella vulgaris based microbial fertilizer on physiological, morphological, and enzymatic activity was performed. Microbial fertilizer applications significantly increased shoot length, fresh and dry weight of the shoot and root, and leaf number and area of guar plants compared to the only drought stress treatments. In addition, following the above-mentioned procedures, there were significant increases in the relative water content, total phenolic and flavonoid contents, superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and glutation reductase (GR) activity. However, the malondialdehyde (MDA) content were significantly decreased. Hence, the results support the administration of a foliar application to the microbial fertilizer containing microalgae in order to increase the guar plant’s defense system, enabling it to tolerate the negative effects resulting from drought stress.

scholarly journals Conventional agriculture and not drought alters relationships between soil biota and functions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Klaus Birkhofer ◽  
Andreas Fliessbach ◽  
María Pilar Gavín-Centol ◽  
Katarina Hedlund ◽  
María Ingimarsdóttir ◽  
...  
Keyword(s):  
Agricultural Practices ◽  
Growing Season ◽  
Significant Loss ◽  
Climatic Conditions ◽  
Soil Biota ◽  
Ecosystem Functions ◽  
Conventional Farming ◽  
Soil Biodiversity ◽  
Conventional Agriculture

AbstractSoil biodiversity constitutes the biological pillars of ecosystem services provided by soils worldwide. Soil life is threatened by intense agricultural management and shifts in climatic conditions as two important global change drivers which are not often jointly studied under field conditions. We addressed the effects of experimental short-term drought over the wheat growing season on soil organisms and ecosystem functions under organic and conventional farming in a Swiss long term trial. Our results suggest that activity and community metrics are suitable indicators for drought stress while microbial communities primarily responded to agricultural practices. Importantly, we found a significant loss of multiple pairwise positive and negative relationships between soil biota and process-related variables in response to conventional farming, but not in response to experimental drought. These results suggest a considerable weakening of the contribution of soil biota to ecosystem functions under long-term conventional agriculture. Independent of the farming system, experimental and seasonal (ambient) drought conditions directly affected soil biota and activity. A higher soil water content during early and intermediate stages of the growing season and a high number of significant relationships between soil biota to ecosystem functions suggest that organic farming provides a buffer against drought effects.

Impact of improved fallow periods on soil properties and productivity of maize ( Zea mays L.) in major and minor seasons of Asian humid tropics

2008 ◽  
Vol 56 (3) ◽  
pp. 303-312 ◽  
Author(s):  
U. Sangakkara ◽  
P. Stamp
Keyword(s):  
Soil Properties ◽  
Crop Production ◽  
Cropping Systems ◽  
Low Cost ◽  
Climatic Conditions ◽  
Growth And Yield ◽  
Improved Fallow ◽  
Improved Fallows ◽  
Maize Yields ◽  
The Impact

Improved fallows are considered an easy, low cost and suitable method of increasing the productivity and sustainability of smallholder tropical rainfed cropping systems, although most farmers allow weeds to grow when the environmental conditions are not conductive for crop production. Field studies were carried out over the minor and major seasons, to evaluate the impact of a preceding improved fallow using Crotalaria or Tithonia , two popular tropical green manures, on selected soil properties, and on the growth and yield of maize. Improved fallows enhanced chemical soil properties significantly and the impact was most prominent at the onset of the minor maize season. Thus, the growth and yield of maize was also increased to a greater extent in this season, when yields are generally lower due to the suboptimal climatic conditions of lower rainfall and higher temperatures. However, fallows in the minor season also improved soil characteristics and maize yields in the major season, the most significant impact being increased seed yields and harvest indices. Although farmers may not grow fallow crops in major seasons, the potential of these green manure fallows in increasing maize yields in minor seasons and possible strategies to include the fallows in the cropping sequences of tropical rainfed upland cropping systems are discussed on the basis of this field study.

scholarly journals THE INFLUENCE OF FERTILIZATION AND LOCATION ON THE VEGETATIVE GROWTH AND YIELD PARAMETERS OF THE LJUBITOVAČKI ŠARAC GARLIC (Allium sativum L.)

Poljoprivreda ◽  
2020 ◽  
Vol 26 (2) ◽  
pp. 72-78
Author(s):  
Zora Kažimir ◽  
◽  
Gvozden Dumičić ◽  
Bojan Stipešević
Keyword(s):  
Vegetative Growth ◽  
Allium Sativum ◽  
Total Yield ◽  
Climatic Conditions ◽  
Growth And Yield ◽  
Yield Parameters ◽  
Negative Effect ◽  
Number Of Leaves ◽  
Set Up ◽  
The Impact

The aim of this study was to determine the impact of the applied fertilization on the vegetative growth and yield parameters of garlic (Allium sativum L.) during cultivation at the locations in Split and Ljubitovica. The experiment with the local Ljubitovački Šarac garlic genotype was set up from the fall to the summer of the 2012/2013 growing season. Three types of fertilization were applied: a mineral, organic, and an organomineral one. Climatic conditions, vegetative growth, and the garlic yield parameters were monitored during vegetation. A location impact was statistically significant. In Split, better results were recorded concerning the plant height (35.8 cm) and the number of leaves (7.4), while better results were obtained concerning a percentage of the extracted heads (68.3%), total yield (427.5 g), and a percentage of the marketable plants (98.5%) at the Ljubitovica locality The effect of fertilization had no statistically significant differences. The area of Ljubitovica turned out to be more suitable for growing the Ljubitovački Šarac genotype, whereas the organic fertilization has not produced a negative effect on the investigated parameters of the garlic yield, which is contributing toward a possibility of growing this genotype pursuant to the organic agriculture legislation.

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