Results 21 to 30 of about 33,898 (263)

Effect of different N supply level on rice paddy system's nitrogen flux at high-yielding paddy field

浙江大学学报. 农业与生命科学版, 2007
Rice plant and soil nitrogen flux under different N supply levels were analyzed, and the nitrogen flux which was excluded into the environment was calculated using subtraction method based on the experiments conducted in Fuyang, Yuhang sites from 2003 to
XU Wei, YANG Jing-ping, WANG Hua, SUN Jun-hua, SHI Hong-xing   +4 more
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Spatial and temporal variations of crop fertilization and soil fertility in the loess plateau in china from the 1970s to the 2000s.

PLoS ONE, 2014
Increased fertilizer input in agricultural systems during the last few decades has resulted in large yield increases, but also in environmental problems.
Xiaoying Wang, Yanan Tong, Yimin Gao, Pengcheng Gao, Fen Liu, Zuoping Zhao, Yan Pang   +6 more
doaj   +1 more source

EFFECT OF CHEMICAL AND BIO-NITROGEN FERTILIZER ON THE GROWTH AND YIELD OF COWPEA PLANT (Vigna sinensis savi .) [PDF]

Journal of Plant Production, 2000
Two field experiments were carried out at the Experimental Station of National Research Centre at Shalakan during the 1998 and 1999 growth seasons to study the response of cowpea plant to different levels of chemical and bio-nitrogen fertilizer .
M. Abdel-Mouty,
doaj   +1 more source

EFFICIENCY OF LEVELS OF PREPARED SLOW-RELEASE FERTILIZERS (NPK-CHITOSAN), ORGANIC MANURE AND INCUBATION PERIODS ON NITROGEN AVAILABILITY IN TWO DIFFERENT TEXTURE SOILS

مجلة الزراعة العراقية البحثية
The study was conducted at laboratory experiment included a completely randomized design (CRD) to study the efficiency of NPK-Chitosan fertilizers derived from shrimp shells with a ratio of1:1,1:2and 1:3 (NPK-Chitosan) (coating and mixing) at four ...
B. M. Kadhim, H. J. Hussein, A. A. Hussein   +2 more
doaj   +1 more source

Evaluation of Grain and Essential Oil Yield of Cumin (Cuminum cyminum L.) Using of Penergetic, Chemical Fertilizers and Magnetic Water [PDF]

Journal of Agricultural Science and Sustainable Production, 2020
This study was conducted to investigate the effect of water (irrigation with ordinary water and magnetic water) and fertilizer treatments on cumin growth and yield by split plot experiment based on randomized complete block design in three replications ...
Mahnaz Sharifi, Adel Dabbag-Mohammadi Nassab, Mohammad Shakiba, Mehredad Yarnia   +3 more
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INFLUENCE OF NITROGEN FERTILIZER LEVELS AND PLANT DENSITY IN COTTON CROP [PDF]

Mesopotamia Journal of Agriculture, 2011
A factorial experiment in RCBD was conducted in the season 2002 at technical institute of Mosul at Namrood location to study the effect of distance between holes (20,30,40 cm) and levels of N fertilizer (120,160,200,240 kg Urea/ha.) on vegetative characters and yield and its components using cotton variety Koker-310.
openaire   +2 more sources

RESPONSE OF MAIZE GROWTH TO ORGANIC AND FOLIAR FERTILIZATION UNDER NITROGEN FERTILIZER LEVELS [PDF]

Journal of Plant Production, 2012
Two field experiments were carried out at El-Orman  Village, El-Sinbelaween Station, Dakahlia Governorate, during the two successive summer seasons of 2010 and 2011. The main objectives of this study were to determine the effect of organic fertilization (without, farmyard manure {FYM} and compost) and foliar fertilization (without, spraying with water,
A. Attia, S. El-Moursy, E. Said, S. Seadh, A. El-Azab   +4 more
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INFLUENCE OF DIFFERENT LEVELS AND APPLICATION DATES OF NITROGEN FERTILIZER ON GROWTH OF TWO [PDF]

Mesopotamia Journal of Agriculture, 2008
Afield experiment was conducted to investigate the effect of varieties, nitrogen fertilizer levels and their application dates on growth characters of corn (Zea mays L.). The split -split plot design in RCBD with three replications was used.
Saleh M.I. Al jobouri
doaj   +1 more source

Moderate nitrogen application facilitates Bt cotton growth and suppresses population expansion of aphids (Aphis gossypii) by altering plant physiological characteristics

Frontiers in Plant Science
IntroductionExcessive application of nitrogen fertilizer in cotton field causes soil and water pollution as well as significant increase of aphid population.
Lixiang Guo, Lin Niu, Xiangzhen Zhu, Xiangzhen Zhu, Li Wang, Li Wang, Kaixin Zhang, Kaixin Zhang, Dongyang Li, Dongyang Li, Punniyakotti Elumalai, Xueke Gao, Xueke Gao, Xueke Gao, Jichao Ji, Jichao Ji, Jichao Ji, Jinjie Cui, Jinjie Cui, Jinjie Cui, Junyu Luo, Junyu Luo, Junyu Luo   +22 more
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Response of Some Agronomic Characteristic of Canola (Brassica napus L.) to Nitrogen Fertilizer and Sowing Date [PDF]

Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī, 2015
To study effects of nitrogen fertilizer and sowing date on some agronomic traits of canola cultivars, a factorial split plot experiment based on randomized complete block design with four replications was conducted during growing season 2013 – 2014 at ...
S Safikhani, A Biabani, Abolfazl Faraji, Ali Rahemi, Abdolatif Gholizadeh   +4 more
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