Plant, Soil and Environment, 2009 (vol. 55), issue 3
Influence of arbuscular mycorrhizal fungi on uptake of Zn and P by two contrasting rice genotypes
R. Hajiboland, N. Aliasgharzad, R. Barzeghar
Plant Soil Environ., 2009, 55(3):93-100 | DOI: 10.17221/319-PSE 
There is little experimental evidence about the functional significance of arbuscular mycorrhizal fungi (AMF) colonization in providing nutrients for lowland rice. This study was undertaken to examine whether growth and nutrient deficiencies may affect plants benefit from AMF inoculation. Two contrasting rice (Oryza sativa L.) genotypes and two AMF species (Glomus mosseae and G. intraradices) were used in this experiment. Under P starvation, P uptake in the genotype tolerant to P deficiency (Fajr), declined significantly up to 36% (P < 0.05) in response to AMF inoculation, while it enhanced by about 70% (P <...
Effect of long-term application of manure and mineral fertilizers on nitrogen mineralization and microbial biomass in paddy soil during rice growth stages
J. Zhang, J. Qin, W. Yao, L. Bi, T. Lai, X. Yu
Plant Soil Environ., 2009, 55(3):101-109 | DOI: 10.17221/322-PSE
Net N mineralization rate (NMR), net N consumption rate (NCR), microbial biomass carbon (MBC) and nitrogen (MBN), potentially mineralizable N (PMN) and mineral N (N-NH+4 and N-NO-3) were measured in paddy soil at five growth stages of rice to determine the effect of long-term fertilization in subtropical China. The studied long-term treatments included CK (no fertilization), N, NP, NPK and NPK + OM (NPK plus organic manure). The NPK + OM treatment gave the highest values of the measured variables among all treatments. There was no significant difference in other treatments except for mineral N and PMN at...
Spatial variability and affecting factors of soil nutrients in croplands of Northeast China: a case study in Dehui County
Z.M. Wang, K.S. Song, B. Zhang, D.W. Liu, X.Y. Li, C.Y. Ren, S.M. Zhang, L. Luo, C.H. Zhang
Plant Soil Environ., 2009, 55(3):110-120 | DOI: 10.17221/323-PSE
This paper addressed the spatial distribution characteristics of organic matter, total nitrogen, extractable phosphorus and extractable potassium in agricultural soils of Northeast China. The related factors were explored using geostatistics and geographic information systems. The results showed that the log-transformed data of the four soil nutrients followed a normal distribution. Soil extractable phosphorus had a higher coefficient of variation. The experimental variogram of the log-transformed data of soil organic matter, total nitrogen and extractable phosphorus was fitted with an exponential model, while soil extractable potassium was fitted...
Measurements of the actual evapotranspiration and crop coefficients of summer and winter seasons crops in Japan
P. Attarod, M. Aoki, V. Bayramzadeh
Plant Soil Environ., 2009, 55(3):121-127 | DOI: 10.17221/324-PSE
The main goal was to understand the trends of actual evapotranspiration (AET) and crop coefficient (Kc) in summer and winter seasons crops in Japan, maize, soybean, wheat and Italian rye-grass. Bowen ratio energy balance technique (BREB) was applied to measure the AET and heat flux between ground surface and atmosphere. Measurements were carried out using an automatic weather station (AWS) installed seasonally in the experimental farm of Tokyo University of Agriculture and Technology (TUAT). Penman-Monteith equation recommended by FAO was used to calculate reference crop evapotranspiration (ET0) and Kc...
Physiological mechanism contributing to efficient use of water in field tomato under different irrigation
S. Lei, Q. Yunzhou, J. Fengchao, S. Changhai, Y. Chao, L. Yuxin, L. Mengyu, D. Baodi
Plant Soil Environ., 2009, 55(3):128-133 | DOI: 10.17221/321-PSE
An open field experiment was conducted under furrow irrigation with 3 treatments: CK (control), PRD (partial root drying) and RDI (regulated deficit irrigation). The results showed that water potential, water content of the leaf and growth were decreased under PRD and RDI and the plants met stronger water stress under RDI than under PRD regime. The water use efficiency (WUE) based on fruit yield reached to 10.95 kg/m3 and 15.33 kg/m3, i.e. 17.1% and 63.9% increase over CK under RDI and PRD, respectively. The transpiration efficiency in RDI was kept at the same level as CK, whereas it was promoted by 32.4% under PRD condition....
Multiplicative yield component analysis: what does it offer to cereal agronomists and breeders
M. Kozak, M.R. Verma
Plant Soil Environ., 2009, 55(3):134-138 | DOI: 10.17221/320-PSE
In this paper we have discussed the problem of decomposition of a response variable into other predictor variables whose product gives the value of the response variable. This methodology is known as multiplicative yield component analysis. We have discussed the applications of multiplicative yield component analysis in cereal science and breeding. The discussion of multiplicative yield component analysis involves the description of yield component analysis for cereal grain yield, single genotype yield component analysis and across-genotype yield component analysis.