The effects of different drip irrigation regimes on watermelon [Citrullus lanatus (Thunb.)] yield and yield components under semi-arid climatic conditions

2004 ◽  
Vol 55 (11) ◽  
pp. 1149 ◽  
Author(s):  
Mehmet Şimşek ◽  
Murat Kaçıra ◽  
Tahsin Tonkaz
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Yield Components ◽  
Citrullus Lanatus ◽  
Maximum Yield ◽  
Yield Response ◽  
Irrigation Frequency ◽  
Irrigation Regimes ◽  
Yield And Yield Components ◽  
Semi Arid

This study was conducted to investigate the effects of drip irrigation on yield and yield components of watermelon [Citrullus lanatus (Thunb.) Crimson Tide F1] under semiarid conditions in the Southeastern Anatolian Project Region, Harran Plain, Şanlıurfa, Turkey, during 2002 and 2003. Using a 4-day irrigation period, 4 different irrigation regimes were applied as ratios of irrigation water/cumulative pan evaporation (IW/CPE): 1.25 (I125), 1.00 (I100), 0.75 (I75), and 0.50 (I50). Seasonal crop evapotranspiration (ETc) rates were 720, 677, 554, and 449 mm in the first year and 677, 617, 519, and 417 mm in the second year for irrigation treatments I125, I100, I75, and I50, respectively. Amounts of irrigation water applied to the 4 respective treatments were 764, 642, 520, and 398 mm in 2002 and 709, 591, 473, and 355 mm in 2003. Maximum yield was obtained from I125, with 84.1 t/ha in 2002 and 88.6 t/ha in 2003. Yield was reduced significantly as the irrigation water was reduced. The values of water use efficiency ranged from 9.6 to 11.7 kg/m3 in 2002 and 10.8 to 13.1 kg/m3 in 2003. The unstressed I125 treatment produced 10.1 kg marketable watermelons/m3 irrigation in 2002, and 11.3 kg/m3 in 2003. By comparison, the least irrigated (I50) treatment produced 12.4 kg/m3 in 2002, and 14.9 kg/m3 in 2003. A yield response factor (ky) value of 1.15 was determined based on averages of 2 years, and watermelon was found to be sensitive to water stress. This result showed that yield loss (1 – Ya/Ym) is more important than evapotranspiration deficit (1 – ETa/ETm). The study demonstrates that 1.25 IW/CPE water applications by a drip system in a 4-day irrigation frequency might be optimal for watermelon grown in semi-arid regions similar to those in which the work was conducted.

scholarly journals Short-Term Impact of Drip Irrigation Frequency on Soil Hydro-Physical Properties of an Alfisol and Performance of Two Maize Varieties

2020 ◽  
Vol 8 (8) ◽  
pp. 1675-1685
Author(s):  
Gabriel Oladele Awe ◽  
Busola Margret Ayuba ◽  
Japheth Umam ◽  
Toyin Peter Abegunrin
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Yield Components ◽  
Irrigation Frequency ◽  
Short Term ◽  
Maize Varieties ◽  
Maize Variety ◽  
And Performance

Irrigation scheduling is important for efficient use of applied water and for maximizing crop yields. Therefore, the aim of this study was to evaluate the short-term effect of drip irrigation frequency on soil hydro-physical properties of an Alfisol and performance of two maize varieties, at the Teaching and Research Farm, Faculty of Agricultural Sciences, Ekiti State University, Ado Ekiti, Southwest Nigeria. The experiment was laid out using a split-plot experiment in randomized complete block design (RCBD) and three replications. Irrigation frequency constituted the main plot namely: irrigation four times a week (I4), irrigation thrice a week (I3), and irrigation twice a week (I2) of re-filling soil to field capacity while the subplot was maize variety namely: V1: SAMMAZ-27 and V2: OBA-super-6. Plant growth parameters and soil physical properties of soil water content (SWC), bulk density (BD) and saturated hydraulic conductivity (Ksat) were monitored during the growing cycle. Water use efficiency (WUE) and yield components were determined at maturity. There were significant interactions between irrigation regime and maize variety on SWC and Ksat. The maximum bulk density (BDmax) and optimum soil water content SWCopt were 1.41 g/cm3 and 0.12 g/g, respectively. Plant height (PH) did not differ between the two maize varieties throughout the growth cycle. Drip irrigation frequency did not significantly affect plant height until growth stage V12 (12 fully opened leaves), with I4 irrigation treatment having the tallest plant. Both drip irrigation and maize variety had no significant influence on both LAI and CC, neither was there any significant interaction effect. Increasing irrigation water increased maize yield and yield components. The treatment combination of I4V1 had the highest performance indices in terms of yield components. WUE decreased with increasing frequency of irrigation water application while the WUE of SAMMAZ-27 > OBA-super-6. Therefore, irrigating four times a week and SAMAZ-27 maize variety could be a suitable irrigation-variety combination for providing sustainable irrigation agriculture for maize in this region.

scholarly journals Effects of multiple N, P, and K fertilizer combinations on adzuki bean (Vigna angularis) yield in a semi-arid region of northeastern China

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zhi-chao Yin ◽  
Wen-yun Guo ◽  
Jie Liang ◽  
Huan-yu Xiao ◽  
Xi-yu Hao ◽  
...  
Keyword(s):  
Yield Components ◽  
Sandy Loam ◽  
Maximum Yield ◽  
Field Trials ◽  
Interaction Effects ◽  
Adzuki Bean ◽  
Yield And Yield Components ◽  
K Fertilizer ◽  
Fertilizer Combination ◽  
Semi Arid

AbstractNitrogen (N), phosphorus (P), and potassium (K) exert various effects on adzuki bean yields. Our research was conducted in a semi-arid area, and four test sites were established in environments that have chernozem or sandy loam soils. During a five-year period, the effects of N, P, and K fertilizers on yield were comprehensively investigated in field trials (2014–2016) and for model-implementation trials (2017–2018), with models established prior to the latter. In the field trials, 23 treatments comprising different N, P, and K combinations significantly affected both yield and yield components, and regression analysis indicated that the experimental results were suitable for model establishment. The model subsequently demonstrated that the yield and the yield components were more sensitive to N and K fertilizer than to P fertilizer. Moreover, the yield and yield components increased. These yield increases were intense in response to the 0.5 to 1.34 levels in terms of the single effects; interaction effects; and the effects of combinations of N, P, and K fertilizers. Moreover, the effects of combinations of N, P, and K fertilizers were more significant on yield than were the single or interaction effects of N, P, and K fertilizers. The optimal fertilizer combination that resulted in high yields (≥1941.53 kg ha−1) comprised 57.23–68.43 kg ha−1 N, 36.04–47.32 kg ha−1 P2O5 and 50.29–61.27 kg ha−1 K2O. The fertilizer combination that resulted in the maximum yield was 62.98 kg ha−1 N, 47.04 kg ha−1 P2O5 and 59.95 kg ha−1 K2O (N:P2O5:K2O = 1:0.75:0.95), which produced the model-expected yield in trials at multiple sites. An economical fertilizer combination was determined on the basis of the best fertilizer measures in consideration of the cost of fertilizer and seed; this combination achieved yields of 2236.17 kg ha−1, the profit was 15,653.16 Yuan ha−1, and the corresponding rates were 57.60 kg ha−1 N, 47.03 kg ha−1 P2O5, and 31.64 kg ha−1 K2O (N:P2O5:K2O = 1:0.82:0.55).

scholarly journals CRESCIMENTO E PRODUÇÃO DE REPOLHO SOB DIFERENTES ADUBAÇÕES NA PRESENÇA E AUSÊNCIA DE COBERTURA MORTA EM AGRICULTURA FAMILIAR

Irriga ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 74
Author(s):  
Eduardo Silva dos Santos ◽  
Abelardo Antônio de Assunção Montenegro ◽  
Elvira Maria Regis Pedrosa ◽  
Ênio Farias de França e Silva
Keyword(s):  
Yield Components ◽  
Block Design ◽  
Organic Fertilizer ◽  
Water Shortage ◽  
Irrigated Agriculture ◽  
Mineral Fertilizers ◽  
Irrigation Frequency ◽  
Yield And Yield Components ◽  
Brassica Oleraceae ◽  
Presence And Absence

CRESCIMENTO E PRODUÇÃO DE REPOLHO SOB DIFERENTES ADUBAÇÕES NA PRESENÇA E AUSÊNCIA DE COBERTURA MORTA EM AGRICULTURA FAMILIAR EDUARDO SILVA DOS SANTOS1; ABELARDO ANTÔNIO DE ASSUNÇÃO MONTENEGRO2; ELVIRA MARIA REGIS PEDROSA2, ÊNIO FARIAS DE FRANÇA E SILVA2 1Doutor em Engenharia Agrícola, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, CEP: 52171-900 – Recife, PE. [email protected] de Engenharia Agrícola, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, Dois Irmão, CEPE: 52171-900 – Recife, PE. [email protected]; [email protected]; [email protected] 1 RESUMO O cultivo familiar de hortaliças no semiárido é de grande relevância econômica e social, sendo caracterizado por condições de escassez hídrica e baixa fertilidade dos solos. Por esses motivos, requer práticas de irrigação e de manejo agrícola. O presente estudo teve início em 22/11/2011, sendo conduzido até 18/03/2012, com o objetivo de avaliar o efeito da adoção de práticas conservacionistas e de diferentes fontes de adubação, na presença e ausência de cobertura morta, na produtividade e componentes de produção do repolho Midore, em região semiárida, do Estado de Pernambuco. Os tratamentos foram arranjados em delineamento de blocos ao acaso, em esquema 4 x 2, correspondendo a quatro tipos de adubação (adubação organomineral; adubação mineral; adubação orgânica e testemunha sem adubação) e dois tipos de cobertura do solo (ausência de cobertura morta e presença com densidade de 9 t ha-1), com quatro repetições. Os parâmetros avaliados foram: produtividade de cabeça de repolho; peso médio de cabeça; diâmetro vertical de cabeça; diâmetro horizontal de cabeça; número de folhas; altura de planta; índice de forma de cabeça e a eficiência do uso da água. Para o turno de rega adotado, de um dia, não houve efeito significativo da cobertura morta sobre a produtividade e componentes de produção do repolho. Já com relação à adubação, a adoção de adubação orgânica não diferiu da mineral nem da organomineral. Palavras-chaves: semiárido, agricultura irrigada, Brassica oleraceae  SANTOS, E. S.; MONTENEGRO, A. A. A.; PEDROSA, E. M. R.; SILVA, E. F. F.GROWTH AND YIELD OF CABBAGE UNDER DIFFERENT FERTILIZATION IN THE PRESENCE AND ABSENCE OF MULCH IN COMMUNAL FARMING 2 ABSTRACT Communal horticulture cropping in the semiarid presents a high social and economic relevance, being characterized by water shortage and low soil fertility. Then, it requires irrigation and agricultural management. This study started on 22/11/2011, being conducted until 18/03/2012. The present study was conducted with the aim of evaluating the effect of different nutrient sources in the presence and absence of mulch on yield and yield components of Midore cabbage, in the semiarid, Pernambuco State. Treatments were arranged in a randomized block design, in a 4 x 2 scheme, corresponding to four fertilizer levels (organomineral fertilization, mineral fertilizers, organic manure, and one control without fertilization) and two soil cover conditions, in the presence and absence of mulch, with a density of 9 t ha-1, with four replications. The parameters evaluated were productivity of head cabbage; curd weight, vertical head diameter, horizontal diameter of the head, number of leaves; plant height over crop cycle; shaped head index (SFI) and the water use efficiency. For the adopted irrigation frequency, there was no significant effect of mulching on yield and yield components of cabbage. With respect to fertilization, adoption of organic fertilizer produced similar results in comparison to mineral and organomineral fertilization. Keywords: semiarid, irrigated agriculture, Brassica oleraceae

CROP-WEED COMPETITION STUDIES IN FABA BEAN (Vicia faba L.) UNDER RAINFED CONDITIONS

2001 ◽  
Vol 49 (3) ◽  
pp. 299-303 ◽  
Author(s):  
A. M. Tawaha ◽  
M. A. Turk
Keyword(s):  
Vicia Faba ◽  
Faba Bean ◽  
Yield Components ◽  
Field Experiments ◽  
Maximum Yield ◽  
Weed Competition ◽  
Growing Seasons ◽  
Yield And Yield Components ◽  
Vicia Faba L ◽  
Crop Weed Competition

Field experiments were conducted during the two growing seasons of 1999 and 2000 at the research farm of the Jordan University of Science and Technology (JUST) to study the effect of the time of weed removal on the yield and yield components of faba bean (Vicia faba L.). Removing weeds from 25 to 75 days after crop sowing led to significantly larger yields than on plots which were not weeded. Maximum yield was obtained in both years when weeds were removed thrice at 25, 50 and 75 days after crop sowing.

scholarly journals Influence of magnetised irrigation water on the fertigation process and potato productivity

2020 ◽  
Vol 66 (No. 2) ◽  
pp. 43-51
Author(s):  
Harby Mostafa
Keyword(s):  
Soil Properties ◽  
Irrigation Water ◽  
Yield Components ◽  
Magnetic Device ◽  
Yield And Yield Components ◽  
Normal Water ◽  
Engineering Parameters ◽  
Magnetic Water

An experiment was conducted for two seasons on a farm in the Mit Kenana village, Qalyobia, Egypt. The aim was to study the influence of a magnetised water technology on the fertilisers during irrigation (fertigation) and its impact on the water, soil as well as the yield and yield components for potatoes. The experiment included: Normal water (NM), magnetic water (MW), adding fertiliser before (FMW) and after magnetism (MWF). The results indicated that irrigation with magnetised water and then adding fertiliser (MWF) had a positive significant effect on the water and soil properties, the tuber engineering parameters improved and the potato productivity increased by 40.5% higher than the NM method.<br />The fertigation unit has to be installed after the magnetic device because the direct magnetisation of the water with the fertilisers contributes to the cracking and increases the solubility of the fertilisers that may lead to the possibility of leaching some of them away from the roots, which implies losing some of them and, therefore, decreasing the effectiveness of the fertilisers

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