منابع مشابه
Efficiency of nitrogen fertilization in spring wheat
An assessment of the nitrogen fertilization efficiency should not only include quantitativeand qualitative yield changes, but also an analysis of formation some indicators such as: Nharvest index (NHI), N use efficiency (NUE), N utilization efficiency (NUtE), N agronomicefficiency (NAE), N physiological efficiency (NPE) and N apparent recovery fraction (NRF).The objective of the study was the e...
متن کاملNitrogen yield and nitrogen use of chickpea compared to pea, barley and oat in Central Europe
European agriculture suffers from a substantial deficit of protein sources forlivestock and the projected changes in agro-climatic conditions in Central Europeinclude a higher risk of drought. To address these challenges, the drought resistantlegume crop chickpea was compared with pea, barley and oat regarding its nitrogen(N) yield, protein yield and N use and utilization efficiency under Centr...
متن کاملMorphogenetic characteristics of three Brachiaria brizantha cultivars submitted to nitrogen fertilization.
This study aims to evaluate the morphogenetic characteristics of three cultivars of Brachiaria brizantha subjected to nitrogen fertilization. The design was a randomized block in factorial arrangement 4x3; three cultivars of B. brizantha - Marandu, Piatã, Xaraés and four nitrogen levels - 0, 80, 160 and 240 kg/ha, with three replications. The experimental units consisted of plastic pots filled ...
متن کاملRole of nitrogen content of pea (Pisum sativum L.) on pea aphid (Acyrthosiphon pisum Harris) establishment
The leaf nitrogen content is generally accepted as an indicator of food quality and as a factor affecting host selection by phytophagous insects. The alate pea aphids (Acyrthosiphon pisum Harris, Aphididae) were given a choice among non-nodulated pea plants (Pisum sativum L.) supplied with one of four nitrate-N levels (0, 3, 15 and 30 mM). When whole plants were exposed to aphids for 7 days, th...
متن کاملComparative study of nitrogen fixation and carbon metabolism in two chick-pea (Cicer arietinum L.) cultivars under salt stress
salinity is one of the major environmental constraints on agriculture in many regions of the world (Boyer, 1982; Two cultivars of Cicer arietinum with differential tolerSerrano and Gaxiola, 1994). Chick-pea (Cicer arietinum ance to salinity have been compared by analysing L.) nodules are indeterminate (Hirsch, 1992) and export growth, photosynthesis, nodulation, nitrogenase activfixed N as amid...
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ژورنال
عنوان ژورنال: Científica
سال: 2016
ISSN: 1984-5529,0100-0039
DOI: 10.15361/1984-5529.2016v44n3p439-445