نتایج جستجو برای: npk

تعداد نتایج: 2745  

2002
SUBASH CHANDRA

Coastal sandy soil is characterised by low fertility and poor physical properties. Distillery effluent, a liquid waste from the distillery industry contains large quantities of soluble organic matter and plant nutrients. It does not contain any toxic elements / compounds. In order to improve the physical properties and fertility of the coastal soil by utilising the distillery effluent, field ex...

2009
J. Zhang J. Qin W. Yao T. Lai X. Yu

Net N mineralization rate (NMR), net N consumption rate (NCR), microbial biomass carbon (MBC) and nitrogen (MBN), potentially mineralizable N (PMN) and mineral N (N-NH4 + and N-NO3 –) were measured in paddy soil at five growth stages of rice to determine the effect of long-term fertilization in subtropical China. The studied long-term treatments included CK (no fertilization), N, NP, NPK and NP...

2011
F. KHATUN M. S. ALAM M. A. HOSSAIN S. ALAM P. K. MALAKER

A 2-year field study was carried out to find out the effect of three macro nutrients NPK on the severity of Alternaria leaf blight and yield of mustard. Nitrogen @ 80, 100, 120, 140, and 160, phosphorus @ 15, 30, and 45, and potassium @ 30, 60, and 90 kg/ha were applied. Among the nutrients, 120-3060 kg NPK/ha was considered as recommended dose on the basis of soil test. Fertilizer dose 120-30-...

2014
T. Šimon A. Czakó

This study assesses the effect of long-term (59 years) application of organic and inorganic fertilizers on soil organic matter and enzyme activity. Total organic C, total organic N, hot water soluble C, microbial biomass C and dehydrogenase activity were evaluated in soil from the long-term field experiment in Prague-Ruzyně (Orthic Luvisol, clay loam). Total organic C and N increased significan...

به‌منظور بررسی تأثیر کودهای زیستی، شیمیایی و تلفیقی بر رشد، عملکرد و اجزای عملکرد آفتابگردان، آزمایشی در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه زابل در سال زراعی 94-1393 اجرا شد. آزمایش شامل 13 تیمار بود که عبارتند از: NPK، بیوفسفر، بیوفسفر+ 25 درصد NPK، بیوفسفر+50 درصد NPK، بیوفسفر+100 درصد NPK،  نیتروکسین،  نیتروکسین + 25 درصد NPK، نیتروکسین + 50 د...

به‌منظور بررسی تأثیر کودهای زیستی، شیمیایی و تلفیقی بر رشد، عملکرد و اجزای عملکرد آفتابگردان، آزمایشی در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه زابل در سال زراعی 94-1393 اجرا شد. آزمایش شامل 13 تیمار بود که عبارتند از: NPK، بیوفسفر، بیوفسفر+ 25 درصد NPK، بیوفسفر+50 درصد NPK، بیوفسفر+100 درصد NPK،  نیتروکسین،  نیتروکسین + 25 درصد NPK، نیتروکسین + 50 د...

2013
S. Krishnakumar R. Muthukrishnan V. Rajendran R. K. Kaleeswari

Investigations were carried out to study the effect of organic farming with various sources of organic manures and their combinations on nitrogen use efficiency parameters of ADT 36 rice (Oryza sativa L.). The experiments were laid out in randomized block design (RBD) with fourteen treatments, comprising twelve treatment combinations of organic manures, one treatment with recommended dose of ch...

1999
R N Jørgensen B J Jørgensen

greater than CO2 (Callander et al., 1995). Therefore, the objective of the present work was to quantify the annual emission of N2O from winter rye, M. ‘Giganteus’ and winter oilseed rape. Furthermore the N2O emission will be related to the estimated net CO2-displacement. The annual emissions of N2O were measured using a closed-chamber technique and were based on results obtained by Jørgensen et...

2013
Abd El-Naby

The present study was carried out for three successive seasons 2008/2009, 2009/2010 and 2010/2011 on fifteen years old of olive trees cv. Picual to reduce the degree of alternate bearing through fertilization by NPK over than the rates recommended by the Ministry of Agriculture and Lands Reclamation. The obtained results showed that, fertilizing olive trees with 50% over NPK recommended doses i...

2009
B. P. Bhattarai

The study was conducted at 10 – yearsold walnut orchard at Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni-Solan(H.P.) to find out the effect of integrated nutrient management on leaf nutrient status of walnut (Juglans regia L.). There were 13 different treatment combinations of organic and inorganic fertilizers. Treatments were applied on per tree basis. Among the treatments re...

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