Effect of potassium fertilization during fruit development on tomato quality, potassium uptake, water and potassium use efficiency under deficit irrigation regime

Under changing climate, water scarcity and frequent incidence of diseases like stripe rust pose the biggest threat to sustainable crop production which jeopardizes nutritional security. A study was executed to rationalize crop water requirement and evaluate wheat (Triticum aestivum L. cv. Bohoth 3) yield losses by stripe rust infection under irrigated conditions. Seven water treatments included three irrigations in three stages/season ( S 3 ), four irrigations ( S 4 ), and five irrigations ( S 5 ) at the different sensitive growth stages, full ( F ), and two deficit irrigation levels including D 1 = 80 % of field capacity (FC) and D 2 = 70 % (FC) along with farmers’ practice of irrigation as control ( C ). Results revealed that F and D 1 boosted grain yield by 31 and 14%. Overall, F irrigation regime resulted in the highest grain production (2.93 ton/ha) as well as biomass yield (13.2 ton/ha). However, D 2 had the highest value of grain protein (15.9%) and achieved the highest application efficiency (AE) at midseason (54.6%) and end season (59.6%), and the lowest AE was under S 3 . Also, halting irrigation at the milky stage ( S 5 ) led to a significant decrease in irrigation water use efficiency as compared to D 1 . However, cutting irrigation at the end of seedling, heading, and milky stages ( S 3 ) caused a significant reduction in E a , crop water use (ETa), and 1000 grain weight in comparison with all other treatments. Regarding yellow rust, S 3 irrigation regime resulted in the lowest incidence of yellow rust infection. The highest irrigation and water use efficiency values were recorded under D 1 (0.79 and 0.59 kg/m3), and the lowest values were obtained for control. Hence, the deficit irrigation treatment D 1 could be recommended as the best appropriate strategy to save more water and to improve the water productivity under Yemeni agroclimatic conditions.

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Corn Grain Yield and Potassium Uptake and Recycling as affected by Rootworm Resistance and Potassium Fertilization

10.31274/farmprogressreports-180814-1783 ◽

2011 ◽

Author(s):

Carlos Xavier Villavicencio ◽

Antonio P. Mallarino ◽

Matthew William Clover

Keyword(s):

Grain Yield ◽

Potassium Uptake ◽

Potassium Fertilization ◽

Corn Grain ◽

Corn Grain Yield

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Physiological and Yield Responses of Green-Shelled Beans (Phaseolus vulgaris L.) Grown under Restricted Irrigation

Agronomy ◽

10.3390/agronomy11030562 ◽

2021 ◽

Vol 11 (3) ◽

pp. 562

Author(s):

Karen Campos ◽

Andrés R. Schwember ◽

Daniel Machado ◽

Mónica Ozores-Hampton ◽

Pilar M. Gil

Keyword(s):

Water Stress ◽

Deficit Irrigation ◽

Pot Experiment ◽

Water Restriction ◽

One Pot ◽

Dry Land ◽

Severe Water Stress ◽

The Face ◽

Use Efficiency ◽

Yield Responses

Common bean is an important crop, consumed as green-shelled bean in several countries. In Chile, green-shelled beans are cultivated often as a dry land crop, vulnerable to drought. The objective of this study was to characterize the hydric and productive responses of four green-shelled bean genotypes subjected to deficit irrigation in order to outline production strategies in the face of increasing water scarcity. Two experiments were evaluated: one pot experiment with three irrigation treatments, supplying 100% of the crop evapotranspiration (ETc) (T100), 50% (T50), and 30% (T30); and an open field experiment with two treatments: 100% (I100) and 40% of ETc (I40). Treatments were applied during reproductive stage in determinate cultivars and vegetative stage in indeterminate plants. Severe water restriction (T30 and I40) in both experiments showed a significant decrease in stomatal conductances, as well as biomass and number of grains per pod; I40 treatment also showed a reduction in chlorophyll fluorescence. Water use efficiency (WUE) was higher under water stress in field (I40), but lower on the T30 treatment from the pot experiment. Determinate cultivars showed 22.7% higher of 100-seed weight compared to indeterminate type, and, thus, higher tolerance to drought. Our results indicate that severe water stress is highly harmful in terms of yield, and a moderate controlled deficit irrigation plus the use of determinate genotypes may be a strategy for producing green-shelled bean successfully under a drought scenario.

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Impact of Organic Amendment with Alternate Wetting and Drying Irrigation on Rice Yield, Water Use Efficiency and Physicochemical Properties of Soil

Agronomy ◽

10.3390/agronomy11081529 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1529

Author(s):

Ahmad Numery Ashfaqul Haque ◽

Md. Kamal Uddin ◽

Muhammad Firdaus Sulaiman ◽

Adibah Mohd Amin ◽

Mahmud Hossain ◽

...

Keyword(s):

Physicochemical Properties ◽

Water Use Efficiency ◽

Water Use ◽

Organic Amendment ◽

Rice Yield ◽

Organic Amendments ◽

Irrigation Regime ◽

Wetting And Drying ◽

Use Efficiency ◽

Properties Of Soil

A pot experiment was executed to investigate the impact of biochar and compost with water-saving irrigation on the rice yield, water use efficiency, and physicochemical properties of soil. Two irrigation regimes—namely alternate wetting and drying (AWD) and continuous flooding (CF)—and four types of organic amendments (OA)—namely rice husk biochar (RHB), oil palm empty fruit bunch biochar (EFBB), compost and a control—were applied to evaluate their effects. Under the AWD irrigation regime, the maximum grain was produced by RHB (241.12 g), whereas under the same organic amendments, both AWD and CF produced a similar grain yield. Under the same organic amendment, a significantly higher water use efficiency (WUE) was observed from the AWD irrigation with RHB (6.30 g L−1) and EFBB (5.80 g L−1). Within the same irrigation regime, soil pH, cation exchange capacity, total carbon, total nitrogen and available phosphorus were enhanced due to the incorporation of biochar and compost, while higher soil exchangeable potassium was observed under CF irrigation for all treatments. RHB and EFBB significantly reduced the soil bulk density (up to 20.70%) and increased porosity (up to 16.70%) under both irrigation regimes. The results imply that the use of biochar with AWD irrigation could enhance the nutrient uptake and physicochemical properties of soil and allow rice to produce a greater yield with less water consumption.

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Integrated Effect of Deficit Irrigation and Sowing Methods on Weed Dynamics and System Productivity of Maize–Cowpea Sequence on Vertisols

Agronomy ◽

10.3390/agronomy11040808 ◽

2021 ◽

Vol 11 (4) ◽

pp. 808

Author(s):

Hanamant M. Halli ◽

Sanganabasappa Angadi ◽

Prabhu Govindasamy ◽

Raghavendra Madar ◽

Manjanagouda S. Sannagoudar ◽

...

Keyword(s):

Water Use ◽

Deficit Irrigation ◽

Dry Weight ◽

System Productivity ◽

Weed Density ◽

Soil Moisture Availability ◽

Use Efficiency ◽

Weed Dynamics ◽

Semi Arid Region ◽

Irrigation Levels

The aim of this study was to explore the effect of sowing methods and deficit irrigation on weed dynamics, yield and water-use efficiency (WUE) of the maize–cowpea system during the summer and monsoon seasons, respectively. The field experiment was carried out for two years (2015 and 2016) using a split design with three replicates under irrigated (maize) and rainfed (cowpea) conditions on vertisols of a semi-arid region. Treatments included three sowing methods [i.e., broad bed and furrow (BBF), corrugated furrow (CF) and ridges and furrow (RF)] and four irrigation levels [i.e., irrigation once in 10 days (I10D), irrigation at 40% (I40), at 50% (I50) and at 60% (I60) depletion]. The results indicated that, regardless of weed flora (monocots, dicots and sedges), the RF method produced higher weed density (2.09–2.98 No. m−2) compared to CF (2.00–2.80 No. m−2) and BBF (1.85–2.64 No. m−2) in maize at 30 and 60 days after sowing (DAS). The RF method with irrigation at I40 and I50 recorded significantly higher weed density, followed by the CF and BBF method. A similar trend was also observed with dry weight of weeds (monocot; 24.19%, dicot; 25.52%, and sedges; 29.80%) in maize at 30 and 60 DAS. Higher weed density and dry weight of weeds in the RF method with I40 was due to higher soil moisture availability and higher nutrient uptake due to larger lateral wetting of the soil and greater water use (29.27%). However, the BBF method favoured the growth of weeds (9.33–16.60%) in cowpea at 55 DAS and coped under rain-fed situation over CF and RF. The CF with moderate depletion (I50) method produced significantly higher maize equivalent yield (MEY) of cowpea (10,000 kg ha−1) with considerable reduction in the total water usage (19.33%). Therefore, under a water scarcity situation, growers can practice CF and I50 for higher yield and WUE of maize–cowpea sequence cropping.

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Impact of potassium fertilization and potassium uptake by plants on soil clay mineral assemblage in South Brazil

Plant and Soil ◽

10.1007/s11104-016-2862-9 ◽

2016 ◽

Vol 406 (1-2) ◽

pp. 157-172 ◽

Cited By ~ 15

Author(s):

Diovane Freire Moterle ◽

João Kaminski ◽

Danilo dos Santos Rheinheimer ◽

Laurent Caner ◽

Edson Campanhola Bortoluzzi

Keyword(s):

Clay Mineral ◽

Mineral Assemblage ◽

Potassium Uptake ◽

Potassium Fertilization ◽

Clay Mineral Assemblage ◽

Soil Clay ◽

South Brazil

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Field evaluation of deficit irrigation effects on tomato growth performance, water-use efficiency and control of parasitic nematode infection

South African Journal of Plant and Soil ◽

10.1080/02571862.2015.1096421 ◽

2015 ◽

Vol 33 (2) ◽

pp. 125-132 ◽

Cited By ~ 3

Author(s):

Osama Mohawesh

Keyword(s):

Water Use Efficiency ◽

Growth Performance ◽

Water Use ◽

Deficit Irrigation ◽

Parasitic Nematode ◽

Field Evaluation ◽

Use Efficiency ◽

Tomato Growth ◽

And Control ◽

Irrigation Effects

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Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

Energy and Environment Research ◽

10.5539/eer.v5n2p36 ◽

2015 ◽

Vol 5 (2) ◽

pp. 36

Author(s):

Mourad Rezig ◽

Hatem Cheikh M'hamed ◽

Mbarek Ben Naceur

Keyword(s):

Durum Wheat ◽

Water Consumption ◽

Triticum Durum ◽

Deficit Irrigation ◽

Irrigation Amount ◽

Radiation Interception ◽

Growing Seasons ◽

Use Efficiency ◽

Triticum Durum Desf ◽

Radiation Use

Total Dray Matter (TDM), Photosynthetically Active Radiation Intercepted (PARabs), Water Consumption (WC), Water use- (WUE), Radiation use efficiency (RUE) and the Relation between Radiation Interception and Water Consumption for Durum Wheat were investigate under different irrigation amount (D1= 100 % ETc; D2= 70 % ETc; D3= 40 % ETc and D4= pluvial) and during three growing seasons (2005-2006, 2006-2007 and 2007-2008). Results showed that, the cumulative PARabs decreased with deficit irrigation. In fact, D1 treatment recorded the highest cumulative PAR abs and the lowest marked under D4 treatment. Similarly, TDM and RUE were decreased with deficit irrigation. The highest RUE observed under the D1 (from 1.32 to 1.43 g MJ-1) and the lowest under D4 (from 1.17 to 1.29 g MJ-1). However WUE increased with deficit irrigation. The highest WUE were obtained under the D4 (from 3 to 4 kg m-3) and the lowest were observed under D1 (from 2.8 to 3.1 kg m-3). Significant linear relationship was found between cumulative PAR abs and cumulative water consumption with a high correlation coefficient (R2) only under the two treatments D1 and D2.

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