Nitrogen doses in rice grown in a tropical lowland
نویسندگان
چکیده
منابع مشابه
PEST MANAGEMENT: WEEDS Nitrogen Stress Response in Red Rice and Wells Rice Grown in Hydroponics
Red rice (Oryza sativa L.) is a prevalent weed in rice production, competing with cultivated rice for nutrients and other resources. We hypothesize that red rice has a more efficient nitrogen (N) assimilation due to adaptive molecular mechanisms that are absent in rice. Our greenhouse experiments comparing the growth and physiological responses between red rice and ‘Wells’ rice, one of the comm...
متن کاملNitrogen Metabolism in Adaptation of Photosynthesis to Water Stress in Rice Grown under Different Nitrogen Levels
To investigate the role of nitrogen (N) metabolism in the adaptation of photosynthesis to water stress in rice, a hydroponic experiment supplying with low N (0.72 mM), moderate N (2.86 mM), and high N (7.15 mM) followed by 150 g⋅L-1 PEG-6000 induced water stress was conducted in a rainout shelter. Water stress induced stomatal limitation to photosynthesis at low N, but no significant effect was...
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Geomorphic position often correlates with nutrient cycling across landscapes. In tropical forests, topography is known to influence phosphorus (P) availability, but its effect on nitrogen (N) cycling has received less exploration, especially in lowland forests where widespread N richness is frequently assumed. Here, we report significant effects of topographic slope and landscape position on mu...
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Understanding how plant functional traits shape nutrient limitation and cycling on land is a major challenge in ecology. This is especially true for lowland forest ecosystems of the tropics which can be taxonomically and functionally diverse and rich in bioavailable nitrogen (N). In many tropical regions, however, diverse forests occur side-by-side with monodominant forest (one species >60% of ...
متن کاملControls Over Leaf Litter and Soil Nitrogen Fixation in Two Lowland Tropical Rain Forests
Global com parisons suggest that rates o f N fixation in tropical rain forests m ay be am ong the highest on earth. However, data supporting this contention are rare, and the factors th a t regulate N hxation w ithin the biom e rem ain largely unknow n. W e conducted a full-factorial (N X P) fertilization experim ent in two lowland tropical rain forests in C osta Rica to explore the effects o f...
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ژورنال
عنوان ژورنال: Comunicata Scientiae
سال: 2015
ISSN: 2177-5133,2176-9079
DOI: 10.14295/cs.v6i4.984