Search for dissertations about: "Rice grain"

Showing result 1 - 5 of 9 swedish dissertations containing the words Rice grain.

2. 1. ARSENIC REMOVAL BY PHYTOFILTRATION AND SILICON TREATMENT : A POTENTIAL SOLUTION FOR LOWERING ARSENIC CONCENTRATIONS IN FOOD CROPS

   Author : Arifin Sandhi; Gunnar Jacks; Gunno Renman; Maria Greger; Roger Herbert; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; aquatic moss; grain; rice; lettuce; macrophyte; phytoremediation; speciation; temperature; oxygenation; wetland.; Land and Water Resources Engineering; Mark- och vattenteknik;

   Abstract : Use of arsenic-rich groundwater for crop irrigation can increase the arsenic (As) content in food crops and act as a carcinogen, compromising human health. Using aquatic plant based phytofiltration is a potential eco-technique for removing arsenic from water. READ MORE

4. 2. In the wake of the Green Revolution : Environmental and socioeconomic consequences of intensive rice agriculture - The Problems of weeds in Muda, Malaysia

   Author : Magnus Jirström; Institutionen för kulturgeografi och ekonomisk geografi; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; intensification; land degradation; rice agriculture; IPM integrated pest management ; Social geography; sustainable agriculture; Green Revolution; Socialgeografi;

   Abstract : The agricultural intensification strategies represented by the Green Revolution have since the mid-1960s had a very positive impact on food-grain production in Asia. Presently, however, a post-Green Revolution phase of declining growth in output and productivity is experienced in many of the areas where intensification took place. READ MORE

5. 3. Drainage intensity in paddy rice fields : nitrogen flows, salinity, rice yield and greenhouse gas emissions

   Author : Olive Tuyishime; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Abstract : Managing drainage intensity is important in controlling soil moisture and nutrient losses and improving crop yields. This thesis evaluated the effects of drainage intensity on nitrogen losses, salinity and rice grain yield in three cropping seasons, and on gaseous emissions of methane (CH4) and nitrous oxide (N2O) from rice flowering to ripening in one season, on a marshland in semiarid region of Rwanda. READ MORE

6. 4. Arsenic Exposure Risk from Rice and Other Dietry Components in Rural Bengal

   Author : Dipti Halder; Prosun Bhattacharya; Mohammad Alauddin; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Rural Bengal; Arsenic; Rice and other dietary components; Total daily intake; Biomarkers; Risk assessment;

   Abstract : This study investigates the risk of arsenic (As) exposure from staple diet to the communities in rural Bengal, even when they have been supplied with As safe drinking water. The results indicate that average accumulation of As in rice grain increases with decrease of grain size [extra-long slender (ELS): 0.04 mg kg-1; long slender (LS): 0. READ MORE

7. 5. Grain Yield and Quality Traits of Rice (Oryza sativa L.) Cultivars under Intermittent Drought and Contrasting Temperatures : physiological, biochemical and molecular characterisation

   Author : Alphonsine Mukamuhirwa; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Abstract : Rice (Oryza sativa) has evolved in a semi-aquatic tropical environment and therefore thrives better in a water intensive system and optimal temperature between 25 and 30°C. With the future climate change, frequent droughts and heat stress are predicted to happen simultaneously in field but little is known about their combined effects on rice productivity and quality. READ MORE