Water is scarce in Palestine and water saving is becoming very important issue. Water management is one of the promising solutions to save water. The purpose of this work was to study the effect of two types of irriga...Water is scarce in Palestine and water saving is becoming very important issue. Water management is one of the promising solutions to save water. The purpose of this work was to study the effect of two types of irrigation regimes on water consumption, yield and growth parameters of cucumber （Cucumis sativus L.） under open field conditions. Cucumbers were grown on a silty-clay soil in Palestinian local conditions. The irrigation regimes used were farmer based irrigation （FI） and tensiometer based irrigation （TI）. The results showed that there were no significant difference in crop yield between FI （3.5 kg/plant） and TI （3.4 kg/plant）. Dry matter was 14.7% less in TI treatment than that in FI treatment, while water saving was 35.7% in TI treatment. Thus, proper use of tensiometer could be utilized for a better use and management of water resource. Selection of proper water potential set-points according to the cultivation season is crucial for satisfactory results.展开更多
With this study, it is aimed at examining the effect of the gender and developmental phases on the aggression tendencies of the Turkish students. In this context, the meta-analysis of the studies existing in the liter...With this study, it is aimed at examining the effect of the gender and developmental phases on the aggression tendencies of the Turkish students. In this context, the meta-analysis of the studies existing in the literature and covering the Turkish students has been conducted. The examined researches to be included in the analysis have been identified in accordance with certain criteria. As criteria, the following conditions have been sought： inclusion of the studies published between 2004 and 2015, inclusion of child, adolescent, and young adult students in the sample, giving the validity and reliability studies of the measuring tools, the studies being obtained from sources of the published theses and articles; and in the data, the arithmetic mean, standard deviation, and sample size being given. In the research, gender has been found effective on the general aggression scores, at significant level （EDavg = .280, p 〈 .01）, and against males at medium level. The general aggression scores from the moderator variables have been found to have a medium level of effect （EDavg = .402, p 〈 .01） on the childhood period, and to have the greatest effect against males.展开更多
The need to maintain high rice yields and improve fertilizer nitrogen(N)-use efficiency has fueled the use of tools such as leaf colour chart(LCC) and chlorophyll meter(SPAD meter) in managing fertilizer N based on co...The need to maintain high rice yields and improve fertilizer nitrogen(N)-use efficiency has fueled the use of tools such as leaf colour chart(LCC) and chlorophyll meter(SPAD meter) in managing fertilizer N based on colour of the leaf. Field experiments were conducted during 2011 to 2013 at Ludhiana, India to assess the need for basal N application and to establish critical threshold values of leaf greenness as measured by LCC and SPAD meter for formulating strategies for in-season management of fertilizer N in dry direct-seeded rice(DDSR). Avoiding application of N at sowing did not adversely affect rice grain yield, indicating that basal N application in DDSR was not necessary and might lead to reduced N-use efficiency. Monitoring N uptake rate during the growing season of DDSR suggested that N uptake rate peaked at the two growth stages: maximum tillering(42 to 56 days after sowing(DAS))and panicle initiation stages(70 to 84 DAS). Using the Cate-Nelson procedure, critical LCC and SPAD meter values for fertilizer N application worked out to be 4 and 37, respectively. Real-time fertilizer N management strategy based on applying 30 kg N ha-1whenever SPAD meter or LCC readings fell below the critical values maintained optimum rice yields along with higher N-use efficiency than that observed by following blanket recommendation for fertilizer N in the region. The fixed-time variable-dose strategy consisted of applying prescriptive doses of 20 kg N ha-1at 14 DAS and 30 kg N ha-1at 28 DAS and corrective doses of 30, 40 or 50 kg N ha-1at 49 and 70 DAS depending upon LCC shade to be ≥ 4, 4–3.5, or < 3.5 and SPAD meter readings to be ≥ 40, 40–35, or< 35, respectively. This strategy also resulted in optimal rice yield along with higher N-use efficiency as compared to the blanket recommendation. This study revealed that in DDSR, fertilizer N could be managed more efficiently using the tools of LCC and SPAD meter than the current blanket recommendation.展开更多
文摘Water is scarce in Palestine and water saving is becoming very important issue. Water management is one of the promising solutions to save water. The purpose of this work was to study the effect of two types of irrigation regimes on water consumption, yield and growth parameters of cucumber （Cucumis sativus L.） under open field conditions. Cucumbers were grown on a silty-clay soil in Palestinian local conditions. The irrigation regimes used were farmer based irrigation （FI） and tensiometer based irrigation （TI）. The results showed that there were no significant difference in crop yield between FI （3.5 kg/plant） and TI （3.4 kg/plant）. Dry matter was 14.7% less in TI treatment than that in FI treatment, while water saving was 35.7% in TI treatment. Thus, proper use of tensiometer could be utilized for a better use and management of water resource. Selection of proper water potential set-points according to the cultivation season is crucial for satisfactory results.
文摘With this study, it is aimed at examining the effect of the gender and developmental phases on the aggression tendencies of the Turkish students. In this context, the meta-analysis of the studies existing in the literature and covering the Turkish students has been conducted. The examined researches to be included in the analysis have been identified in accordance with certain criteria. As criteria, the following conditions have been sought： inclusion of the studies published between 2004 and 2015, inclusion of child, adolescent, and young adult students in the sample, giving the validity and reliability studies of the measuring tools, the studies being obtained from sources of the published theses and articles; and in the data, the arithmetic mean, standard deviation, and sample size being given. In the research, gender has been found effective on the general aggression scores, at significant level （EDavg = .280, p 〈 .01）, and against males at medium level. The general aggression scores from the moderator variables have been found to have a medium level of effect （EDavg = .402, p 〈 .01） on the childhood period, and to have the greatest effect against males.
基金supported by the Indian Council of Cultural Relations and Egypt Government through the Cultural Exchange Programme
文摘The need to maintain high rice yields and improve fertilizer nitrogen(N)-use efficiency has fueled the use of tools such as leaf colour chart(LCC) and chlorophyll meter(SPAD meter) in managing fertilizer N based on colour of the leaf. Field experiments were conducted during 2011 to 2013 at Ludhiana, India to assess the need for basal N application and to establish critical threshold values of leaf greenness as measured by LCC and SPAD meter for formulating strategies for in-season management of fertilizer N in dry direct-seeded rice(DDSR). Avoiding application of N at sowing did not adversely affect rice grain yield, indicating that basal N application in DDSR was not necessary and might lead to reduced N-use efficiency. Monitoring N uptake rate during the growing season of DDSR suggested that N uptake rate peaked at the two growth stages: maximum tillering(42 to 56 days after sowing(DAS))and panicle initiation stages(70 to 84 DAS). Using the Cate-Nelson procedure, critical LCC and SPAD meter values for fertilizer N application worked out to be 4 and 37, respectively. Real-time fertilizer N management strategy based on applying 30 kg N ha-1whenever SPAD meter or LCC readings fell below the critical values maintained optimum rice yields along with higher N-use efficiency than that observed by following blanket recommendation for fertilizer N in the region. The fixed-time variable-dose strategy consisted of applying prescriptive doses of 20 kg N ha-1at 14 DAS and 30 kg N ha-1at 28 DAS and corrective doses of 30, 40 or 50 kg N ha-1at 49 and 70 DAS depending upon LCC shade to be ≥ 4, 4–3.5, or < 3.5 and SPAD meter readings to be ≥ 40, 40–35, or< 35, respectively. This strategy also resulted in optimal rice yield along with higher N-use efficiency as compared to the blanket recommendation. This study revealed that in DDSR, fertilizer N could be managed more efficiently using the tools of LCC and SPAD meter than the current blanket recommendation.
