Study of white onion (Alium cepa L.) on yield and economics under pulse irrigation (drip) for different irrigation levels

Abstract

:10' E and altitude of 250 m). The experiment was arranged in twelve treatment combinations with strip plot design as horizontal factor (main treatment) one continuous irrigation (P 1 ), two pulses (P 2 ), three pulses (P 3 ) and four pulses (P 4 ), while vertical factor (sub treatment) as irrigation levels viz., I 1 (0.80 ET C ), I 2 (1.0 ET C ) and I 3 (1.20 ET C ) treatments. It was revealed that the average seasonal water applied to white onion under pulse irrigation (drip) through different irrigation levels varied from 276.8 mm for I 1 (0.8 ET C ) to 429.0 mm for I 3 (1.2 ET C ) irrigation levels. Among the different treatment combination I 2 P 4 (irrigation level I 2 (1.0 ET C ) with four pulse treatment P 4 ) was found 38.52 t.ha -1 and significantly superior over I 1 P 1 (irrigation level I 1 (0.8 ET C ) with continuous irrigation P 1 ). The production cost of Rs. 4,47,366 and Rs. 4,42, , gross returns of Rs. 9,63,000 and Rs. 9,31,500 ha -1 , net returns of Rs. 5,15,634 and Rs. 4,88,538 ha -1 and B C ratio of 2.15 and 2.10, were observed for I 2 P 4 and I 3 P 4 treatment combinations, respectively. Average water use efficiency was found maximum for I 1 P 4 (11.93 q ha -1 cm -1 ) treatment combination followed by I 1 P 3 (11.33 q ha -1 cm -1 ) and I 2 P 4 (10.99 q ha -1 cm -1 ) treatment combinations, respectively.

Weather-based Scheduling and Pulse Drip Irrigation Increase Growth and Production of Northern Highbush Blueberry

“…In other crops, pulse irrigation increased IWUE by 0.8 kgÁm -3 in orange (Abdelraouf et al 2019), 1.2 kgÁm -3 in potato (Bakeer et al 2009), and 2.0 to 3.2 kgÁm -3 in onion (Madane et al 2018). Thus, in these crops, pulse irrigation is a means to increase growth and production with less water; however, this did not appear to be the case for northern highbush blueberry.…”

“…This suggests that the single K c values for berry bushes in the FAO's guidelines for computing crop water requirements (Allen et al 1998) used in weather-based scheduling may overestimate the amount of water needed per day in blueberry. However, IWUE often increases when plants are underirrigated (e.g., Madane et al 2018), which was likely the case with the fixed schedule. ii Means (n 5 4) followed by a different letter within a column or pair of columns are significantly different at P # 0.05 (Tukey's test).…”

Production and Quality of Mini Watermelon Under Drip Irrigation With Brackish Water

“…The data also showed that under pulse management the values of PD and TC were higher in the control treatment, while the conventional management led to higher values in the 6.5 dS m -1 treatment. The results obtained at low ECsol indicate that shorter irrigation interval guarantees a favorable growth of the crop, as it enables a balanced supply of water and nutrients throughout its cycle (MADANE et al, 2018;ZAMORA et al, 2019). For some authors, the process of water redistribution is more associated with soil or substrate characteristics than with water application characteristics (SKAGGS; TROUT; ROTHFUSS, 2010).…”

“…Among the technologies used to increase production and improve fruit quality, pulse irrigation (intermittent irrigation) has had positive effects (ELNESR et al, 2015;ZAMORA et al, 2019). The pulse system is a concept in which a small part of the water requirement per day is supplied by frequent irrigation, in order to meet the plant's water needs (MADANE et al, 2018). Thus, this technique makes it possible to keep water and soluble nutrients close to the root zone, reducing the risks of nutrient leaching and water loss by percolation (ZAMORA et al, 2019).…”

Production of green cowpea beans fertigated by continuous and pulse drip irrigation

“…Zamora et al (2019) concluded that, among the existing technologies to support irrigation management, pulse irrigation has shown significant effects on the productivity of several crops. In this irrigation system, the application of an irrigation depth is fractionated in order to add water and nutrients close to the root zone of the plant, reducing the risks of nutrient leaching and water loss through percolation (Madane et al, 2018;Zamora et al, 2019).…”