scholarly journals Efficiency of nitrogen use by sesame genotypes under brazilian semi-arid conditions

2021 ◽  
Vol 37 ◽  
pp. e37013
Author(s):  
Manoel Galdino Dos Santos ◽  
Rayanne Maria Paula Ribeiro ◽  
Hamurábi Anizio Lins ◽  
Giordanio Bruno Silva Oliveira ◽  
José Ricardo Tavares de Alburquerque ◽  
...  
Keyword(s):  
Nitrogen Loss ◽  
Nitrogen Use ◽  
Agronomic Efficiency ◽  
Sesame Seeds ◽  
Arid Conditions ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Sesame Genotypes ◽  
The Cost ◽  
Semi Arid

Nitrogen (N) is an essential macronutrient for plant growth and rate applications can influence the performance of sesame, and when applied in excess can cause nitrogen loss in the environment, and consequently make the cost of production more costly to the producer. Therefore, the objective of this work was to evaluate the efficiency of nitrogen use by different cultivars of irrigated sesame seeds under the edaphoclimatic conditions of the northeastern semi-arid region in two harvests. The experiments were carried out from February to May (1st harvest) and from July to October (2nd harvest) in 2016. The treatments were arranged in a split plot scheme, in which the plots were the five nitrogen doses (0, 30, 60, 90 and 120 kg ha-1), and in the subplots, the four sesame genotypes (CNPA G2, CNPA G3, CNPA G4 and BRS Seda), the design was in randomized complete blocks with four replications. The nitrogen use efficiency assessments evaluated were: agronomic efficiency (AE), physiological efficiency (PE), agrophysiological efficiency (APE), recovery efficiency (RE) and efficiency of use (EU). The rate that provided the greatest efficiency of use was 30 kg ha-1 of N applied. The cultivar BRS Seda had greater efficiency of use in relation to the other cultivars studied. The crop that had better efficiency of use was the 2nd agricultural harvest.

scholarly journals Combined application of nitrogen and phosphorus to enhance nitrogen use efficiency and close the wheat yield gap on varying soils in semi‐arid conditions

2019 ◽  
Vol 205 (6) ◽  
pp. 635-646 ◽  
Author(s):  
Therese M. McBeath ◽  
Vadakattu V. S. R. Gupta ◽  
Rick S. Llewellyn ◽  
Sean D. Mason ◽  
Christopher W. Davoren ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Wheat Yield ◽  
Nitrogen And Phosphorus ◽  
Yield Gap ◽  
Nitrogen Use ◽  
Combined Application ◽  
Arid Conditions ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Water and nitrogen water use efficiency in forage palm irrigated with salt water in the Neossolo

2020 ◽  
pp. 683-690
Author(s):  
Patrícia Ferreira da Silva ◽  
Rigoberto Moreira de Matos ◽  
José Dantas Neto ◽  
Vitória Ediclécia Borges ◽  
Thiago Galvão Sobrinho ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilization ◽  
Arid Region ◽  
Saline Water ◽  
Salt Water ◽  
Nitrogen Use ◽  
Nitrogen Levels ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid

The objectives were to analyze the water and nitrogen use efficiency by forage palm in different irrigation depths with saline water and nitrogen fertilization levels in the Brazilian semi-arid region. The experiment was conducted under field condition during one year of cultivation (360 days). The experimental design was a complete randomized block and 5 x 5 factorial scheme with five irrigation depths (125, 100, 75, and 25% of ET0) and five levels of nitrogen fertilization (0, 150, 300, 450 and 600 kg ha-1 of N) and three replicates. Irrigation and acceptable nitrogen fertilization resulted in a good water and fertilization management. Water and nitrogen use efficiency of forage palm were higher, when water depths and the nitrogen levels supplied to the soil were increased. The 125% ET0 depth showed a higher efficiency of water and nitrogen use in the forage palm during 360 days of study. In conditions of low nitrogen supply, the efficiency of nitrogen use is directly and indirectly associated with the fresh mass yield; while under high supply, the efficiency of the use of nitrogen is more effective. The use of irrigation and nitrogen fertilization in the semi-arid region is recommended to obtain higher productivity of water and nitrogen from the forage palm.

scholarly journals AGRONOMIC EFFICIENCY OF THE INTERCROPPING OF ARUGULA WITH CARROT UNDER DIFFERENT POPULATION COMBINATIONS

2016 ◽  
Vol 29 (1) ◽  
pp. 76-84 ◽  
Author(s):  
THAÍZA MABELLE DE VASCONCELOS BATISTA ◽  
FRANCISCO BEZERRA NETO ◽  
ÍTALO NUNES SILVA ◽  
MAIELE LEANDRO DA SILVA ◽  
ELIANE QUEIROGA DE OLIVEIRA ◽  
...  
Keyword(s):  
Experimental Design ◽  
Maximum Yield ◽  
Population Densities ◽  
Agronomic Efficiency ◽  
Green Mass ◽  
Sole Crop ◽  
Arid Conditions ◽  
Caatinga Biome ◽  
Brazilian Northeast ◽  
Semi Arid

ABSTRACT: The objective of this study was to evaluate the agronomic efficiency of intercropping combinations of carrot and arugula at different population densities in bicropping in the semi-arid conditions of the Brazilian Northeast. The study was conducted at the "Rafael Fernandes" Experimental Farm of the Universidade Federal Rural do Semi-Árido (UFERSA) during the period September 2011 to February 2012. The experimental design was of randomized complete blocks with treatments arranged in a 4 x 4 factorial scheme with four replications. The combinations were four population densities of carrot (40, 60, 80 and 100% of the recommended population in sole crop - RPSC) with four population densities of arugula (40, 60, 80 and 100% of the RPSC). The recommended population densities for sole crops of carrot and arugula are 500,000 and 1,000,000 plants per hectare, respectively. All treatments were fertilized with hairy woodrose (Merremia aegyptia L.), a spontaneous species of the Caatinga biome. The highest agronomic efficiency of carrot intercropped with arugula in bicropping was achieved in the combination of 40% of RPSC for the carrot and 100% of RPSC for the arugula. The commercial maximum yield (33.74 t ha-1) of carrot roots and the maximum yields of arugula green mass (8.06 and 2.67 t ha-1) in both cultivations were also obtained in the combination of population densities of 40% of RPSC for carrot and 100% of RPSC for arugula.

Can the informal groundwater markets improve water use efficiency and equity? Evidence from a semi-arid region of Pakistan

2019 ◽  
Vol 666 ◽  
pp. 849-857 ◽  
Author(s):  
Amar Razzaq ◽  
Ping Qing ◽  
Muhammad Asad ur Rehman Naseer ◽  
Muhammad Abid ◽  
Mumtaz Anwar ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Region ◽  
Use Efficiency ◽  
Groundwater Markets ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Response of Rapes (Brassica napus L.) to Nano- Iron Fertilization under semi-arid Region conditions

Bionatura ◽  
2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Lamiaa A. Mutlag ◽  
Nagam A. Meshaimsh ◽  
Hasan H. Mahdi ◽  
Raghad S. Mouhamad ◽  
Hasan H. Khamat ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Agricultural Research ◽  
Block Design ◽  
Nutrient Content ◽  
Brassica Napus L ◽  
Arid Conditions ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Semi Arid Region ◽  
Semi Arid

The field experiment was conducted in the season of 2017-2018 at the Agricultural Research Department-AL-Azafrinih/Baghdad-Iraq. This study aimed to determine the effect of adding the Foliar Fe fertilization (Nano-Fe) and ground fertilization of (N, P) in the growth and production yield of rapes (Brassica napus L.). The experiment included three levels of foliar fertilization (Nano-Fe) that is (0, 5, 10 Kg. ha-1) and one level of ground fertilization (N 100 Kg. ha-1, P 250 Kg. ha-1). The experiment designed according to Randomized Complete Block Design (R.C.B.D) with three replications each parameter. The studied traits were nutrients content (macro-micro) in seeds and soil, the percentage of protein, oil, and carbohydrate. All data were analyzed and used statistically. Results showed a significant difference between Nano-Fe fertilization and nutrient content (N, Mn, K, Ca, Mg, S, and Cu), pH in soil at the level of 10 kg. ha-1, compared to no-fertilization. Moreover, the significant difference between Nano-Fe fertilization, yield (1425.6 kg. ha-1), the percentage of oil (52.16%), protein content in seeds (46.5%), carbohydrate (26.8%), Nutrient content N and P in seeds at the level of 10 kg. ha-1, compared to no-fertilization and the nutrient content (Ca, Mg, Fe) in seeds at levelof5 kg. ha-1, compared to no-fertilization. Current results suggested that Nano-Fe fertilization at the level of 10 kg. ha-1 can be adopted as the best level for rapes (Brassica napus L.) cultivation under semi-arid conditions.

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