نتایج جستجو برای: mineral nitrogen

تعداد نتایج: 182453  

Journal: :علوم باغبانی ایران 0
مهسا عاشوری واجاری دانشجوی سابق کارشناسی ارشد، دانشکدة کشاورزی دانشگاه گیلان محمود قاسم نژاد دانشیار دانشکدة کشاورزی دانشگاه گیلان رضا ابراهیمی استادیار دانشکدة کشاورزی دانشگاه گیلان عاطفه صبوری استادیار دانشکدة کشاورزی دانشگاه گیلان

leaf analysis is a general method of estimating the fertilizer needs in fruit trees, but there exists a limited correlation between it and fruit quality. throughout the present study, fruits were harvested 10 weeks following full bloom and at the commercial maturity (6.2 brix) stages from thirteen different commercial kiwifruit orchards that had been fertilized with different fertilizers, the e...

2011
S. R. and Rathod

The mineral compositions of the 8 wild edible fruits were investigated. Nitrogen, sodium, potassium, calcium, magnesium and phosphorus were analyzed as the major constituents of the fruits and iron, zinc, copper and manganese were identified as a minor constituent. Among all the mineral, Potassium were found in large quantity in all fruits. Ficus racemosa L., fruit contain the highest amount of...

Journal: :Science 2008
Stefano Manzoni Robert B Jackson John A Trofymow Amilcare Porporato

Plant residue decomposition and the nutrient release to the soil play a major role in global carbon and nutrient cycling. Although decomposition rates vary strongly with climate, nitrogen immobilization into litter and its release in mineral forms are mainly controlled by the initial chemical composition of the residues. We used a data set of approximately 2800 observations to show that these g...

ژورنال: علوم آب و خاک 2007
حبیب ا... نادیان, , خلیل عالمی سعید, , عبدالمهدی بخشنده, , قدرت ا... فتحی, , مصطفی حیدری, ,

The influence of Nitrogen (N) rates on mineral nutrient uptake in stem and seeds, proline and carbohydrate in flag leaves of Wheat (Triticum aestivum L . Var Chamran) under saline conditions was studied in a field experiment in 2003 and 2004. The experiment was conducted using a split plot design with three replications. The treatments comprised five levels of salinity: 1.5, 5, 10, 15 and 20 ds...

2011
Allen R. Overman Richard V. Scholtz

The expanded growth model is developed to describe accumulation of plant biomass (Mg ha(-1)) and mineral elements (kg ha(-1)) in with calendar time (wk). Accumulation of plant biomass with calendar time occurs as a result of photosynthesis for green land-based plants. A corresponding accumulation of mineral elements such as nitrogen, phosphorus, and potassium occurs from the soil through plant ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Cheryl A Palm Sean M Smukler Clare C Sullivan Patrick K Mutuo Gerson I Nyadzi Markus G Walsh

Potential interactions between food production and climate mitigation are explored for two situations in sub-Saharan Africa, where deforestation and land degradation overlap with hunger and poverty. Three agriculture intensification scenarios for supplying nitrogen to increase crop production (mineral fertilizer, herbaceous legume cover crops--green manures--and agroforestry--legume improved tr...

Journal: :Journal of agricultural and food chemistry 2005
Jesus M Porres Pilar Aranda María López-Jurado Gloria Urbano

The effect of the removal of alpha-galactosides from Lupinus albus L. var. multolupa on the chemical composition of the prepared flour and the dialyzability of N, total P, Ca, Mg, Fe, Zn, and Mn was studied. The extraction process caused a significant increase in total and insoluble nitrogen contents and decreased the amount of soluble protein nitrogen. However, neither these changes nor treatm...

2013
Allen R. Overman Richard V. Scholtz

Accumulation of plant biomass (Mg ha(-1)) with calendar time (wk) occurs as a result of photosynthesis for green land-based plants. A corresponding accumulation of mineral elements (kg ha(-1)) such as nitrogen, phosphorus, and potassium occurs from the soil through plant roots. Field data from literature for the warm-season annual cotton (Gossypium hirsutum L.) are used in this analysis. The ex...

Nitrogen has an important role for supplying carbon skeletons which needs for producing compatible solutes and stress tolerance enzymes. Water deficit affects nitrogen fixation in legums. So we studied the effect of various nitrogen sources on physiological, and biochemical features of bean under water stress. This experiment was conducted as factorial based on completely randomized design with...

حبیب ا... نادیان, , خلیل عالمی سعید, , عبدالمهدی بخشنده, , قدرت ا... فتحی, , مصطفی حیدری, ,

The influence of Nitrogen (N) rates on mineral nutrient uptake in stem and seeds, proline and carbohydrate in flag leaves of Wheat (Triticum aestivum L . Var Chamran) under saline conditions was studied in a field experiment in 2003 and 2004. The experiment was conducted using a split plot design with three replications. The treatments comprised five levels of salinity: 1.5, 5, 10, 15 and 20 ds...

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