نتایج جستجو برای: loamy

تعداد نتایج: 1091  

نجف‌ علی کریمیان, , محمدرضا چاکرالحسینی, , عبدالمجید رونقی, ,

Phosphorus (P) and iron (Fe) are essential nutrients for plants. Iron availability is low in calcareous soils of Iran due to the excessive amounts of CaCO3 and high pH. Overfertilization of P fertilizers may also decrease Fe availability. The objective of this study was to evaluate the effect of P and Fe on the growth and chemical composition of corn (Zea mays L.) under greenhouse conditions. T...

Journal: :RUDN Journal of Agronomy and Animal Industries 2017

2017
J. C. Mailhol P. Ruelle S. Walser N. Schutze C. Dejean Jean Claude Mailhol Pierre Ruelle Sabine Walser Niels Schütze Cyril Dejean

Innovative irrigation solutions have to face water scarcity problems affecting the Mediterranean countries. Generally, surface (DI) or subsurface drip irrigation systems (SDI) have the ability to increase water productivity (WP). But the question about their possible utilization for crops such as corn would merit to be analysed using an appropriate economic tool. The latter would be necessary b...

Journal: :Applied and environmental microbiology 1997
K M Nielsen M D van Weerelt T N Berg A M Bones A N Hagler J D van Elsas

A small microcosm, based on optimized in vitro transformation conditions, was used to study the ecological factors affecting the transformation of Acinetobacter calcoaceticus BD413 in soil. The transforming DNA used was A. calcoaceticus homologous chromosomal DNA with an inserted gene cassette containing a kanamycin resistance gene, nptII. The effects of soil type (silt loam or loamy sand), bac...

2007
H. Melakeberhan S. Mennan S. Chen B. Darby T. Dudek

The pending loss of methyl bromide (MBr) and less understood nematode adaptation behaviour present significant challenges in managing Meloidogyne hapla in vegetable and nursery industries in temperate climates. This study examined the reproductive potential of populations of M. hapla from three nursery (Fields 1–3), one vegetable (Field 4) production system, and their response to a nutritionbas...

Journal: :International Journal of Plant Biology 2022

The species of Artemisia are well known in the Mediterranean region, especially Morocco, for their traditional uses and health benefit. In this study, we were interested two Artemisia, namely A. herba alba Asso mesatlantica Maire. These collected from different soils Central Middle Atlas (loamy, stony, limestone rocky soil) with atmospheres. Extraction essential oils leaves flowering tops was c...

Journal: :ecopersia 2015
einollah rouhi-moghaddam ebrahim sargazy ahmad gholamalizadeh

the purpose of the present research was to study the properties of natural habitats and growth status of the genus tamarix in miankangi, sistan province, south-eastern iran. selective sampling was used to examine the natural stands structure. then, the one ha-rectangular sample plots were stablished in the stands and surrounding bare lands as control plots. quantitative variables of stands viz....

2004
H. A. Torbert

Increasing atmospheric CO2 concentration has led to concerns about global changes to the environment. One area of global change that has not been fully addressed is the effect of elevated atmospheric CO2 on agriculture production inputs. Elevated CO2 concentration alterations of plant growth and C:N ratios may modify C and N cycling in soil and N fertility. This study was conducted to examine t...

2012

Incubation experiment was conducted on four soil types in Nigeria using cattle dung (CD) at the rate of 2.5g/kg soil ( 5 t ha), Urea fertilizer at the rate of 0.1g/kg soil ( 200 kg ha ) and cattle dung (2.5g/kg soil) combined with Urea 0.05g/kg soil (100 kg ha) as treatments. The objective of the experiment was to compare the rate of OC, NH4 – N, NO3 – N and available P release on soils selecte...

1997

Increasing global atmospheric CO2 concentration has led to concerns regarding its potential effects on the terrestrial environment. Attempts to balance the atmospheric carbon (C) budget have met with a large shortfall in C accounting (μ1.4 3 1015 g C y–1) and this has led to the hypothesis that C is being stored in the soil of terrestrial ecosystems. This study examined the effects of CO2 enric...

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