WATER PRODUCTIVITY AND YIELD RESPONSE FACTOR IN TWO CULTIVARS OF PROCESSING TOMATO AS AFFECTED BY DEFICIT IRRIGATION UNDER SEMI-ARID CLIMATE CONDITIONS

Background: For better water resources management in the areas of water shortage for crop production, deficit irrigation is very important. The understanding of the yield response factor to water deficit is crucial for efficient irrigation water management. Deficit irrigation for studying yield response factors is always practiced in the way of stressing the demand of the crops. The present study was done for the determination of the seasonal yield response factor of red Bombay onion variety under Arba Minch agro climate condition. Furthermore, it also examined the effect of furrow irrigation systems on the seasonal yield response factor. Methods: The experiment was conducted from August to November 2019. The experiment had six treatments, which were the combination of two furrow irrigation systems and three irrigation levels. Data were collected for soil moisture before and after each irrigation and bulb yield. The seasonal yield response factors were determined through simple linear regressions using SPSS software. Result: When considering the furrow irrigation system as a factor, the seasonal yield response factor for alternate furrow irrigation system was 1.18 while for paired row furrow irrigation system was 1.07. This red Bombay variety of onion clearly shows more sensitive to water stress for alternative furrow irrigation systems than paired row furrow irrigation systems. Therefore, in the area of water shortage paired row furrow irrigation system is better than alternate furrow irrigation system. The seasonal yield response factor as a wall for red Bombay onion variety in Arba Minch agro-ecological condition was 1.12. Therefore, the red Bombay onion variety in Arba Minch agroclimate condition was sensitive to water stress.

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Improved Growth and Yield Response of Jew’s Mallow (Corchorus olitorius L.) Plants through Biofertilization under Semi-Arid Climate Conditions in Egypt

Agronomy ◽

10.3390/agronomy10111801 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1801

Author(s):

Ahmed Fathy Yousef ◽

Mohamed Ahmed Youssef ◽

Muhammad Moaaz Ali ◽

Muhammed Mustapha Ibrahim ◽

Yong Xu ◽

...

Keyword(s):

Farmyard Manure ◽

Growth Yield ◽

Growth And Yield ◽

Arid Climate ◽

Yield Response ◽

Leaf Biomass ◽

Trichoderma Spp ◽

Climate Conditions ◽

Npk Fertilizer ◽

Semi Arid

This study was conducted to comparatively assess the effects of fertilization typology (organic, inorganic, and biofertilization) on the growth, yield, and compositional profile of Jew’s mallow. The experiment was carried out over two growing seasons, under semi-arid climate conditions on silty loam soil. We adopted three fertilization strategies: (1) inorganic NPK fertilizer (146, 74, and 57 kg ha−1 for N, P2O5, and K2O, respectively), (2) farmyard manure (36 m3 ha−1), and (3) a biofertilizer (a set of mixed cultures of Bacillus spp., Candida spp., and Trichoderma spp. at 36 L ha−1). Treatment combinations were control (without fertilization, T1), NPK fertilizer (T2), farmyard manure (FYM, T3), biofertilizer (T4), NPK+biofertilizer (T5), and FYM+biofertilizer (T6). The T5 treatment maximized both plant and leaf biomass (up to 31.6 and 8.0 t ha−1, respectively), plant height (68.5 cm), leaf area (370 cm m−2), leaf protein content (18.7%), as well as N, P, and K concentration in leaves (2.99, 0.88, and 2.01 mg 100 g−1, respectively). The leaves’ weight incidence was lower in T5 treatment (36.7%) as compared to the unfertilized plants (T1). The results revealed that the combined application of inorganic NPK plus biofertilizer is most beneficial to increase growth, yield, and nutrient accumulation in Jew’s mallow plants.

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Effects of different emitter space and water stress on yield and quality of processing tomato under semi-arid climate conditions

Agricultural Water Management ◽

10.1016/j.agwat.2010.04.008 ◽

2010 ◽

Vol 97 (9) ◽

pp. 1405-1410 ◽

Cited By ~ 56

Author(s):

Aynur Ozbahce ◽

Ali Fuat Tari

Keyword(s):

Water Stress ◽

Arid Climate ◽

Climate Conditions ◽

Processing Tomato ◽

Yield And Quality ◽

Semi Arid

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Yield Response Factor for Onion (Allium Cepa L) Crop Under Deficit Irrigation in Semiarid Tropics of Maharashtra

Current Agriculture Research Journal ◽

10.12944/carj.3.2.06 ◽

2015 ◽

Vol 3 (2) ◽

pp. 128-136

Author(s):

R. G Bhagyawant ◽

S. D Gorantiwar ◽

S. D Dahiwalkar

Keyword(s):

Soil Moisture ◽

Water Consumption ◽

Deficit Irrigation ◽

Relative Yield ◽

Yield Response ◽

Response Factor ◽

Crop Water ◽

Crop Water Use ◽

Allium Cepa L ◽

Yield Response Factor

The present study deals with the study of yield response factor (Ky) for onion crop cultivated under deficit irrigation for Rahuri region (Maharashra). The field experiment was conducted to determine the yield response factor of the onion (Allium cepa L.) cv. N-2-4-1 crop under the deficit irrigation approach during summer season of 2012 and 2013 at Instructional Farm of the Department of Irrigation and Drainage Engineering, Dr. Annasaheb Shinde College of Agricultural Engineering, Mahatma Phule Krishi Vidyapeeth Rahuri. Experiment was carried out in Randomized Block Design (RBD) with 27 treatments and two replications based on different combinations of the quantity of water stress during different crop growth stages. Water applied per irrigation and soil moisture contents before and after irrigation were monitored throughout the season, while onion bulbs were harvested at the end of season and weighed. Average daily crop water use (crop consumptive use) were estimated from the soil moisture content using the soil moisture depletion method. The seasonal yield response factor (Ky) was obtained by relating relative yield decreases to relative crop water use deficit by the regression analysis. The relative yield decreases of the onion crop were proportionally greater with increase in evapotranspiration deficit. It shows the response of yield with respect to the decrease in water consumption. In other words, it explains the decrease in yield caused by the per unit decrease in water consumption. Seasonal crop response factor for onion crop was determined as 1.58, 1.48 and 1.54 during 2012, 2013 and average of both year (2012 &2013) respectively. The yield response factors developed in this study could be used in irrigation design and scheduling for onion in the study area.

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Effects of Surface and Subsurface Drip Irrigation on the Yield, Vegetative Growth and Water Productivity of Onions

Contemporary Agriculture ◽

10.2478/contagri-2018-0021 ◽

2018 ◽

Vol 67 (2) ◽

pp. 149-156

Author(s):

Borivoj Pejić ◽

Ksenija Mačkić ◽

Predrag Randjelović ◽

Ivan Valtner ◽

Jelica Gvozdanović-Varga ◽

...

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Drip Irrigation ◽

Water Productivity ◽

Subsurface Drip Irrigation ◽

Yield Response ◽

Response Factor ◽

Use Efficiency ◽

Yield Response Factor ◽

Subsurface Drip

Summary The objective of this study, conducted in the northern Serbian province of Vojvodina, was to analyze the effect of surface and subsurface drip irrigation (with drip lateral placement depths of 0.05 and 0.1 m) on the yield and water productivity of onions (Allium cepa L., var. ‘Holandski žuti’). The irrigation applied was scheduled on the basis of the water balance method. The daily evapotranspiration rate was computed using the reference evapotranspiration (ETo) based on the Hargreaves equation and the crop coefficient (kc). The irrigation rate was 30 mm, whereas the amount of water added by irrigation during the season was 150 mm. According to the results obtained, the onion yield under irrigated conditions was significantly higher than that under non-irrigated (control) conditions. Differences in the yield obtained using surface and subsurface irrigation were non-significant. The amounts of water used for evapotranspiration under irrigated and non-irrigated conditions were 363 mm and 220 mm, respectively. The value of the surface irrigation yield response factor (Ky) was 0.62, whereas the values of the subsurface irrigation yield response factor (Ky) were 0.61 (0.05 m) and 0.79 (0.1 m). Consequently, onions grown from sets proved moderately sensitive to water stress under regional climate conditions and could be grown without irrigation. The value of the irrigation water use efficiency (Iwue) ranged from 3.55 to 4.97 kg m−3, whereas the value of the evapotranspiration water use efficiency (ETwue) ranged from 3.72 to 5.22 kg m−3. The highest yield of onions was obtained using a drip lateral placement depth of 0.1 m, which is recommended for high-yielding onion production.

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