scholarly journals Relationship of Herbicidal Activity of Soil-Applied Mefenacet to its Concentration in Soil Water and Adsorption in Soil.

1996 ◽  
Vol 41 (2) ◽  
pp. 98-102
Author(s):  
Katsuichiro Kobayashi ◽  
Naoki Nakamura ◽  
Ie Sung Shim ◽  
Shizuo Nagatsuka
Keyword(s):  
Soil Water ◽  
Herbicidal Activity ◽  
Relationship Of

ChemInform Abstract: Synthesis, Herbicidal Activity, and Structure—Bioactivity Relationship of Pyridyl-Containing 2-Phenyliminothiazolidines.

ChemInform ◽  
2008 ◽  
Vol 39 (18) ◽  
Author(s):  
Gangyue Li ◽  
Xuhong Qian ◽  
Shenggang Yan ◽  
Jingnan Cui ◽  
Rong Zhang ◽  
...  
Keyword(s):  
Herbicidal Activity ◽  
Relationship Of

Relationship of mycorrhizal growth enhancement and plant growth with soil water and texture

1986 ◽  
Vol 94 (3) ◽  
pp. 439-443 ◽  
Author(s):  
S. Dakessian ◽  
M. S. Brown ◽  
G. J. Bethlenfalvay
Keyword(s):  
Plant Growth ◽  
Soil Water ◽  
Growth Enhancement ◽  
Relationship Of

scholarly journals Thenylchlor Concentration in Soil Water and its Herbicidal Activity.

1994 ◽  
Vol 39 (3) ◽  
pp. 160-164 ◽  
Author(s):  
Katsuichiro Kobayashi ◽  
Masahide Onoe ◽  
Hirosi Sugiyama
Keyword(s):  
Soil Water ◽  
Herbicidal Activity

Site of Action and Quantitative Structure-Activity Relationship of a Series of Herbicidal N-Aryl-Substituted 3,4-Dimethyl-2-hydroxy-5-oxo-2,5-dihydro-pyrrolones

1979 ◽  
Vol 34 (11) ◽  
pp. 1028-1031 ◽  
Author(s):  
G. P. Brugnoni ◽  
P. Moser ◽  
A. Trebst
Keyword(s):  
Chemical Structure ◽  
Electron Flow ◽  
Quantitative Structure Activity Relationship ◽  
Herbicidal Activity ◽  
Quantitative Structure ◽  
Photosynthetic Electron Flow ◽  
Acceptor Side ◽  
Structure Activity ◽  
Site Of Action ◽  
Relationship Of

Abstract Substituted phenyl-hydroxy pyrrolone derivatives are potential herbicides and are found to be effective inhibitors of photosynthetic electron flow in chloroplasts. Their site of inhibition is localized at the acceptor side of photosystem II similar to DCMU. They have no effect on photophosphoryla­tion. The correlation of photosynthetic acitivity to chemical structure is studied by comparing 36 derivatives. A clear dependence of inhibitory activity on lipophilicity is found. The dependence of herbicidal activity on chemical structure is more complex.

Infiltration Characteristics of Soil Moisture in Liangping County

2014 ◽  
Vol 641-642 ◽  
pp. 183-186
Author(s):  
Shu Yan ◽  
Juan Gao ◽  
Zhong Yuan Zhang ◽  
Feng Lin Zuo ◽  
Wei Hua Zhang
Keyword(s):  
Soil Moisture ◽  
Soil Water ◽  
Infiltration Rate ◽  
Water Shortage ◽  
Water Infiltration ◽  
Soil Infiltration ◽  
Infiltration Model ◽  
Double Ring ◽  
Soil Water Infiltration ◽  
Relationship Of

In order to relieve water shortage, many countries develop water-saving industries and increase water use rate of irrigation. The research on soil water infiltration has important effect on infiltration and runoff, as well as for irrigation. The study carried out in Liangping district of Chongqing by using double ring infiltration method and exploring the reasonable infiltration model in the study area. The relationship of initial soil moisture and irrigation coefficient was studied as well. The results showed that: the Kostiakov empirical formula could simulate the process of soil water infiltration properly. The soil infiltration rate of Liangping is 0.0320cm/min in the selected location.

Characteristics of stomatal diffusion resistance in a Douglas fir forest exposed to soil water deficits

1977 ◽  
Vol 7 (4) ◽  
pp. 595-604 ◽  
Author(s):  
C. S. Tan ◽  
T. A. Black ◽  
J. U. Nnyamah
Keyword(s):  
Soil Water ◽  
Soil Water Potential ◽  
High Stress ◽  
Vapour Pressure Deficit ◽  
Douglas Fir ◽  
Diffusion Resistance ◽  
Total Water ◽  
Pressure Potential ◽  
Relationship Of ◽  
The Relationship

As part of a 2-year study of the effect of thinning on evapotranspiration in Douglas fir (Pseudotsugamenziesii (Mirb.) Franco), the relationship between stomatal diffusion resistance (rs) and environmental variables were studied. Research was conducted in an unthinned stand (1840 stems ha−1) with negligible undergrowth and a thinned stand (840 stems ha−1) with substantial salal (Gaultheriashallon Pursh) undergrowth. During the daytime rs was mainly related to the soil water potential (ψs) and the vapour pressure deficit (v.p.d.) of the canopy air. Daytime values of rs for Douglas fir ranged from 2 to 60 s cm−1 for values of v.p.d. between 4 and 24 mb (4 and 24 × 102 Pa) and values of ψs between 0 and −12.5 bars (0 and −12.5 × 105 Pa). Although increasing rs was usually associated with decreasing pressure potential of the twig xylem (ψt), increasing rs appeared to be associated with increasing ψt when the v.p.d. was high. Stress history was found to cause a shift in the relationship of rs to ψt, but had little effect on the relationship of rs to v.p.d. and ψs. Daytime values of rs for salal ranged from 2 to 45 s cm−1. This stomatal behaviour suggests that as the soil dried out, salal transpiration accounted for an increasing fraction of the total water loss by the thinned stand.

scholarly journals Association of morphological and water factors with irrigated forage cactus yield

2017 ◽  
Vol 21 (9) ◽  
pp. 600-605 ◽  
Author(s):  
Marcela L. Barbosa ◽  
Thieres G. F. da Silva ◽  
Sérgio Zolnier ◽  
Servulo M. S. e Silva ◽  
José E. F. de Morais ◽  
...  
Keyword(s):  
Soil Water ◽  
Correlation Matrix ◽  
Water Regime ◽  
Morphological Characteristics ◽  
Plant Morphology ◽  
Actual Evapotranspiration ◽  
Productive Capacity ◽  
The Moment ◽  
Relationship Of ◽  
The Relationship

ABSTRACT This study aimed to understand the relationship of morphological characteristics and actual evapotranspiration of forage cactus clones with their productive capacity under different water regimes. The data used in this study were collected between the years 2012 and 2013, in Serra Talhada, State of Pernambuco. The clones Sertânia IPA - IPA, Miúda - MIU and Orelha de Elefante Mexicana - OEM were submitted to three irrigation depths (2.5, 5.0 and 7.5 mm) and three irrigation intervals (7, 14 and 28 days). Cladode and plant morphology, accumulated actual evapotranspiration and yield were obtained at the moment of harvest. Pearson’s correlation matrix was elaborated and, in the sequence, multicollinearity, canonical and path analysis were applied. There was no correlation of yield with the soil water supply and actual evapotranspiration of the clones (p > 0.05). Forage cactus yield was more associated with peculiarities of the morphological characteristics of the clones than with the different soil water supplies or the crop actual evapotranspiration. However, regardless of the water regime and clone, the vigor of the basal cladodes was highly decisive for the expression of the forage cactus productive capacity.

scholarly journals Investigation on the relationship of proline with wheat anti-drought under soil water deficits

2006 ◽  
Vol 53 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Shao Hong-Bo ◽  
Chen Xiao-Yan ◽  
Chu Li-Ye ◽  
Zhao Xi-Ning ◽  
Wu Gang ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Deficits ◽  
Relationship Of ◽  
The Relationship

scholarly journals Structure-herbicidal activity relationship of .ALPHA.-phenylsulfonyl propanamide.

1985 ◽  
Vol 49 (12) ◽  
pp. 3551-3555 ◽  
Author(s):  
Hiroyoshi OMOKAWA ◽  
Nobumasa ICHIZEN ◽  
Shigeru TABOGAMI ◽  
Tetsuo TAKEMATSU
Keyword(s):  
Herbicidal Activity ◽  
Activity Relationship ◽  
Relationship Of
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