نتایج جستجو برای: dryland rainfed

تعداد نتایج: 4919  

Journal: :Agronomy 2022

The indiscriminate use of hazardous chemical fertilizers can be reduced by applying eco-friendly smart farming technologies, such as biofertilizers. effects five different types plant growth-promoting rhizobacteria (PGPR), including Fla-wheat (F), Barvar-2 (B), Nitroxin (N1), Nitrokara (N2), and SWRI, their integration with (50% and/or 100% need-based N, P, Zn) on the quantitative qualitative t...

Journal: :Remote Sensing 2015
Jessica J. Walker Kirsten M. de Beurs Randolph H. Wynne

Baseline information about dryland forest phenology is necessary to accurately anticipate future ecosystem shifts. The overarching goal of our study was to investigate the variability of vegetation phenology across a dryland forest landscape in response to climate alterations. We analyzed the influence of site characteristics and climatic conditions on the phenological patterns of an Arizona, U...

2015
ShaLanDer Kumar ThIagarajah ramILan

The livestock production system is considered equally sensitive to climate change as that of core agriculture system and at the same time livestock itself is also contributing to the phenomenon. The present paper attempts to analyze the sensitivity of livestock productivity in rainfed regions to climatic variability, significance of climate change with respect to Indian livestock and mitigation...

2012
T. Prathima T. Yellamanda Reddy T. Murali Krishna K. Devaki P. Sudhakar N. V. Sarala A. Muneendra Babu K. V. Naga Madhuri

Groundnut (Arachis hypogaea L.) is an important oilseed crop grown in our country. Majority of crop is under rainfed conditions and as a post rainy season (Rabi) crop in Andhra Pradesh. Several models are available to predict the phenology, growth and yield of groundnut crop. However, no precise models are available to validate the effects of moisture stress on groundnut and their subsequent im...

Journal: :Applied and environmental microbiology 2012
Olga V Mavrodi Dmitri V Mavrodi James A Parejko Linda S Thomashow David M Weller

This work determined the impact of irrigation on the seasonal dynamics of populations of Pseudomonas spp. producing the antibiotics phenazine-1-carboxylic acid (Phz(+)) and 2,4-diacetylphloroglucinol (Phl(+)) in the rhizosphere of wheat grown in the low-precipitation zone (150 to 300 mm annually) of the Columbia Plateau of the Inland Pacific Northwest. Population sizes and plant colonization fr...

2008
Weijun Shen G. Darrel Jenerette Dafeng Hui Richard P. Phillips Hai Ren

[1] Predicted precipitation regime changes in arid ecosystems have the potential to alter soil C balance, but the influence of changes in different aspects of precipitation (amount, seasonality, and intensity) and the factors contributing to such effects are poorly understood. We used a process-based ecosystem model (PALS) that was modified, parameterized, and evaluated for a Mojave Desert ecos...

2017
William A. Rutherford Thomas H. Painter Scott Ferrenberg Jayne Belnap Gregory S. Okin Cody Flagg Sasha C. Reed

Drylands represent the planet's largest terrestrial biome and evidence suggests these landscapes have large potential for creating feedbacks to future climate. Recent studies also indicate that dryland ecosystems are responding markedly to climate change. Biological soil crusts (biocrusts) ‒ soil surface communities of lichens, mosses, and/or cyanobacteria ‒ comprise up to 70% of dryland cover ...

2011
J. F. REYNOLDS D. M. STAFFORD SMITH G. BASTIN L. GARCIA-BARRIOS R. J. FERNÁNDEZ M. A. JANSSEN N. JÜRGENS R. J. SCHOLES A. VELDKAMP M. M. VERSTRAETE G. VON MALTITZ P. ZDRULI

The Global Drylands Observing System proposed in this issue should reduce the huge uncertainty about the extent of desertification and the rate at which it is changing, and provide valuable information to scientists, planners and policy-makers. However, it needs careful design if information outputs are to be scientifically credible and salient to the needs of people living in dry areas. Its de...

Journal: :Plant physiology 1985
J J Burke J L Hatfield R R Klein J E Mullet

Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls. Midday photosynthetic rates of dryland plants decreased 2-fold, and canopy temperatures increased to 40 degrees C at 80 days after planting compared with canopy temperatures of 30 degrees C for irr...

Journal: :تولید گیاهان زراعی 0
نیلوفر نصرالهی دانشگاه علوم کشاورزی گرگان حسین کاظمی هیات علمی بهنام کامکار هیات علمی

in this research, geographical information system (gis) and analytical hierarchy process (ahp) were applied to agricultural land use suitability of aq-qala township for barley cropping in rainfed condition. for this purpose, 17 environmental layers of the study area collected, and thematic maps such as slope, elevation, precipitation, average, minimum and maximum temperatures and some of micro ...

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