scholarly journals Response of bell pepper to water replacement levels and irrigation times

2019 ◽  
Vol 49 ◽  
Author(s):  
Álvaro Henrique Cândido de Souza ◽  
Roberto Rezende ◽  
Marcelo Zolin Lorenzoni ◽  
Fernando André Silva Santos ◽  
Jhonatan Monteiro de Oliveira
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Management Practices ◽  
Irrigation Management ◽  
Growth Yield ◽  
Fruit Weight ◽  
Fruit Length ◽  
Water Replacement ◽  
Bell Peppers ◽  
Use Efficiency

ABSTRACT Different irrigation times result in variable transpiration rates, due to the water availability and its interaction with the evapotranspiration demand. The vapor pressure deficit is an accurate indicator of the atmosfere evaporative capacity and can affect plants because of the movement of water in the soil-plant-atmosphere continuum system. This study aimed to evaluate the plant growth, yield and water-use efficiency of bell peppers under irrigation times (8 a.m. and 2 p.m.) and water replacement levels (60 %, 80 %, 100 %, 120 % and 140 % of the crop water requirement - ETc) based on the evapotranspiration demand. The increase in the irrigation levels could be fit to linear models for the variables number of fruits per plant, mean and total fruit weight per plant, fruit length, and root, stem and total dry weight. Irrigation at 2 p.m. increased the total and mean fruit weight and number of fruits per plant, as well as fruit length, if compared to the irrigation at 8 a.m., besides increasing the yield by 50.82 % (2,343.0 g plant-1 to 3,533.6 g plant-1) and the water-use efficiency by 55.64 %. In areas subjected to water shortages, establishing irrigation times based on irrigation management practices can increase the water-use efficiency and yield for bell peppers.

Stretching water – Queensland's water use efficiency cotton and grains adoption program

2003 ◽  
Vol 48 (7) ◽  
pp. 191-196 ◽  
Author(s):  
P.J. Goyne ◽  
G.T. McIntyre
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Best Management Practices ◽  
Management Practices ◽  
Irrigation Management ◽  
Public Image ◽  
Best Management ◽  
Irrigation Water Use ◽  
Use Efficiency ◽  
On Farm

The Cotton and Grains Adoption Program of the Queensland Rural Water Use Efficiency Initiative is targeting five major irrigation regions in the state with the objective to develop better irrigation water use efficiency (WUE) through the adoption of best management practices in irrigation. The major beneficiaries of the program will be industries, irrigators and local communities. The benefits will flow via two avenues: increased production and profit resulting from improved WUE and improved environmental health as a consequence of greatly reduced runoff of irrigation tailwater into rivers and streams. This in turn will reduce the risk of nutrient and pesticide contamination of waterways. As a side effect, the work is likely to contribute to an improved public image of the cotton and grain industries. In each of the five regions, WUE officers have established grower groups to assist in providing local input into the specific objectives of extension and demonstration activities. The groups also assist in developing growersÕ perceptions of ownership of the work. Activities are based around four on-farm demonstration sites in each region where irrigation management techniques and hardware are showcased. A key theme of the program is monitoring water use. This is applied both to on-farm storage and distribution as well as to application methods and in-field management. This paper describes the project, its activities and successes.

Using market research to understand the adoption of irrigation management strategies in the stone and pome fruit industry

2005 ◽  
Vol 45 (9) ◽  
pp. 1181 ◽  
Author(s):  
G. Kaine ◽  
D. Bewsell ◽  
A. Boland ◽  
C. Linehan
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Market Research ◽  
Management Practices ◽  
Irrigation Management ◽  
Management Strategies ◽  
Pome Fruit ◽  
Managerial Flexibility ◽  
Use Efficiency ◽  
Extension Program

Market research was conducted to develop an extension program targeting the specific irrigation management needs of growers in the stone and pome fruit industry within the Goulburn Valley, Victoria. The process of integrating market research with extension practice proved challenging, as it required the development of an extension program that was fundamentally different from what was originally envisaged. However, it was essential to achieve this integration in order to meet the original objectives for the extension program as set by the funding body. We found, in most cases, that the motivation for stone and pome fruit growers in the Goulburn Valley to change orchard irrigation management practices was not because they needed to save water, or to increase water use efficiency. Instead, growers were changing practices in order to save time irrigating, improve the scope for managerial flexibility in the orchard, or when redeveloping their orchard to a closer planting design. These findings suggest that growers in the Goulburn Valley are more likely to respond to an extension program consistent with these motivations rather than a program promoting water use efficiency.

scholarly journals FOLIAR APPLICATION OF TECAMIN MAX® TO ALLEVIATE WATER DEFICIT EFFECTS ON YIELD AND WATER-USE EFFICIENCY (WUE) OF OKRA

2019 ◽  
Vol 18 (2) ◽  
pp. 15-20
Author(s):  
Mohammed Ali Abood ◽  
Aziz Mahdi Abd Al-Shammari ◽  
Ghassan Jaafar Hamdi
Keyword(s):  
Water Use Efficiency ◽  
Chlorophyll Content ◽  
Water Deficit ◽  
Water Use ◽  
Foliar Application ◽  
Total Yield ◽  
Growth Yield ◽  
Fruit Weight ◽  
Weight Yield ◽  
Use Efficiency

This study was designed to observe the effects of different rates of foliar application of Tecamin max® on growth, yield and water use efficiency (WUE) of okra under water deficit. The field experiment was conducted from April till July 2016 at the teaching and research farm of University of Diyala, Iraq. Performance of okra genotype ‘Samara’ and ‘Ptira’ was assessed by foliar application of Tecamin max® at (0, 2.5 and 5.0 mL L–1) and two irrigation levels (50 and 100% based on field capacity). The results showed that chlorophyll content, fruit weight, yield per plant, total yield and WUE were significantly affected by genotype and irrigations levels and application of Tecamin max®. ‘Samara’ genotype had the highest chlorophyll content, fruit weight, yield per plant, total yield and water use efficiency. Foliar application of Tecamin max® at the rates of 2.5 mL L–1 showed the highest fruit weight, yield performance and WUE. It was followed by foliar application of 5.0 mL L–1. No application of Tecamin max® showed the worst results in all the studied traits.

scholarly journals Effect of differential nitrogen management practices on growth, yield and water use efficiency of rice under varying moisture regimes

2021 ◽  
pp. 17-30
Author(s):  
Barnali N ◽  
L. Nabachandra Singh ◽  
Ingudam Bhupenchandra ◽  
S.K. Chongtham ◽  
L.C. Olivia ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Water Depth ◽  
Management Practices ◽  
Growth Yield ◽  
Nitrogen Management ◽  
Flowering Stage ◽  
Yield Attributes ◽  
Moisture Regimes ◽  
Use Efficiency

Pot experiments were conducted during 2018and 2019 at the College of Agriculture, Central Agricultural University, Imphal, Manipur, India to investigate the effect of different nitrogen management practices on growth, yield and water use efficiency of rice variety “CAU R1” under varying moisture regimes. Keeping this rationale, three nitrogen management practices {60 kg N/ha (Urea), 40 kg N/ha (Urea) + 20 kg N/ha equivalent FYM, 30 kg N/ha (Urea) + 15 kg N/ha equivalent FYM + 15 kg N/ha equivalent Azolla and three levels of moisture regime {continuous flooding (5 cm depth), no standing water (wetting soil just after hairy cracks appear), 5 cm water depth at tillering, panicle initiation and flowering stage} were tested in a Factorial Randomized Block Design and replicated thrice. Overall, the results of investigational findings indicated that the integrated approach of nitrogen management viz. 50% RDN through Urea + 25% RDN through FYM + 25% through Azolla with maintenance of 5 cm water depth at tillering, panicle initiation and flowering stage markedly improved growth and yield attributes and subsequently yield and water use efficiency of rice as compared to conventional method of nitrogen supplementation through fertilizer. Multivariate principal component analysis and stepwise regression showed that number of tillers/hill is the most important yield attributing characters implicated in augmenting the rice yield significantly.

Water Stress Effects on Growth, Yield and Water Use Efficiency of Hemarthria Compressa

2012 ◽  
Vol 212-213 ◽  
pp. 578-585
Author(s):  
Zhong Wen Yang ◽  
Jun Ying Jin ◽  
Xin Yi Xu
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Control Period ◽  
Growth Yield ◽  
Control Treatment ◽  
Sensitive Period ◽  
Total Biomass ◽  
Use Efficiency ◽  
Hemarthria Compressa

Water stress is an important approach to use water resources efficiently and remit the agricultural water shortage. Hemarthria compressa is one of perennial grasses, a pasture of high quality, which has abundant species resources in China. To explore the response of the growth, yield and water use efficiency(WUE) of Hemarthria compressa under water stress, this study, adapting pot experiment, imposed three water stress degree (LD, MD and SD) treatments and a control treatment on Hemarthria compressa. The data of growth indicators during control period, yield and total water consumption were obtained. The results show a noticeable inhibitory action of water stress on the growth of Hemarthria compressa. Along with the intensifying of water stress, plant height increment, leaf area, total biomass, dry matter of each organ and yield decreased, and the root-shoot ratio increased firstly and inclined to slump finally. Plants under the middle water stress treatment achieved the greatest WUE of 38.25 kg/m3. The first 10d in the water control period was the most sensitive period of the pasture responding to water stress.

scholarly journals PHENOLOGY, YIELD AND WATER USE EFFICIENCY OF SUNFLOWER IN FUNCTION OF ENVIRONMENT AND NITROGEN / FENOLOGIA, RENDIMIENTO Y EFICIENCIA EN EL USO DEL AGUA EN FUNCION DEL AMBIENTE Y NITRÓGENO / PHÉNOLOGIE, RENDEMENT ET EFFICACITÉ DE L’UTILISATION DE L’EAU EN FONCTION DES ENVIRONS ET DE L’AZOTE CHEZ LE TOURNESOL

Helia ◽  
2001 ◽  
Vol 24 (35) ◽  
pp. 111-128
Author(s):  
Víctor M. Olalde G. ◽  
J. Alberto Escalante E. ◽  
Angel A. Mastache L.
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Rainy Season ◽  
Interactive Effect ◽  
Growth Yield ◽  
Growth Cycle ◽  
Crop Evapotranspiration ◽  
Hot Environment ◽  
Crop Cycle ◽  
Use Efficiency

SUMMARYDuring the rainy season of 1998, a field experiment was established in Cocula, Guerrero (hot subhumid climate, Awo) and in Montecillo, México (semiarid climate, BS1), to evaluate the effect of nitrogen (0, 10 and 20 g m-2) and environment on phenology, yield and its components, water use efficiency (WUE), and crop evapotranspiration (ETc) and heat units (HU) accumulated during the growth cycle of sunflower (Helianthus annuus L.) cv. Victoria. The crop was planted on June 1 at a density of 7.5 pl m-2 in both climates. In Cocula, maximum and minimum temperatures were more extreme and rainfall was more intense, while soil was poor in total nitrogen, compared with Montecillo. Crop growth, yield and its components, and water use efficiency were affected significantly by the environment, nitrogen and the interaction environment * nitrogen. The crop cycle in the hot environment was 36 days shorter, with a greater accumulation of HU and ETc. Yield and its components and water use efficiency were significantly higher in Cocula. Nitrogen positively affected the evaluated variables. The interactive effect of environment * nitrogen was observed clearly, since in Cocula there was response to the application of nitrogen in most of the variables evaluated, while in Montecillo there was not.

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