Effects of Soil Moisture, Temperature, and Fertility on Yield and Quality of Irrigated Potatoes in the Southern Plains
            1

The effect of frequency of irrigation on soil moisture, yield and quality of turf was studied at Saanichton, British Columbia during the summers of 1962 and 1963. Plots were watered when a soil moisture budget, based on black Bellani plate atmometers, showed a deficit of 1.3, 1.9, 2.5 and 3.2 cm. All treatments received the same amount of water over the season. The 1.3-cm irrigation treatment ranked first in visual rating, produced the heaviest yields per clip and maintained higher and more uniform soil moisture than the other treatments.The black Bellani plate atmometer proved to be an efficient instrument in predicting irrigation requirements of lawn turfs.

Download Full-text

Complex effect of fertilizers and drip irrigation eggplant yield

VEGETABLE CROPS OF RUSSIA ◽

10.18619/2072-9146-2021-2-67-70 ◽

2021 ◽

pp. 67-70

Author(s):

D. S. Magomedova ◽

S. A. Kurbanov ◽

М. Sh. Shabanova

Keyword(s):

Soil Moisture ◽

Drip Irrigation ◽

Steppe Zone ◽

Organic Fertilizers ◽

Nitrogen Fertilizers ◽

Yield And Quality ◽

Dry Steppe ◽

Water Drip ◽

Photosynthetic Potential

Relevance and methods. In the dry steppe zone of flat Dagestan, the beneficial effect of drip irrigation in combination with organic fertilizers on the yield and quality of Almaz eggplant fruits has been proven. Results. It was established that out of the three studied soil moisture thresholds (70, 80 and 90% HB), the best conditions for plant growth and development, optimization of their photosynthetic activity are created at a moisture threshold of 80% HB in combination with the introduction of 40 t / ha manure + N320P120K210. The combination of factors under study makes it possible to increase the leaf surface index by an average of 24.3%, which contributes to an increase in the photosynthetic potential by 15.7% and an increase in the efficiency of the use of photosynthetically active radiation by crops by 2.5 times in comparison with the unfertilized background by 90% НВ. In conditions of a shortage of irrigation water, drip irrigation in combination with fertigation in the form of three root fertilizing with nitrogen fertilizers increases the efficiency of its use by reducing the water consumption for the formation of a unit of production from on average with 164.8 to 66.4 m3 /t. It has been proven that the best combination of yield-forming factors ensuring the highest eggplant yield - 62.3…63,6 t / ha, is the use of drip irrigation with the maintenance of soil moisture in the active 0.5 m layer during the growing season within 80...100% HB in the complex with the introduction of 40 t / ha of manure and N320P120K210.

Download Full-text

Yield and Quality of Spinach Cultivars for Spring Production in Oklahoma

HortTechnology ◽

10.21273/horttech.14.4.0602 ◽

2004 ◽

Vol 14 (4) ◽

pp. 602-605

Author(s):

Lynn Brandenberger ◽

Lynda K. Wells ◽

Michel M. Haigh

Keyword(s):

Spinacia Oleracea ◽

Quality Characteristics ◽

Southern Plains ◽

Green Color ◽

Yield And Quality

Nine (2001) and eight (2002) spinach (Spinacia oleracea) cultivars, including hybrid and open pollinated types, were tested for yield and quality characteristics during two spring production seasons in Oklahoma. Cultivars were evaluated for emergence, vigor, color, bolting resistance, and yield. Cultivars did not vary significantly for yield, which ranged from 11.9 to 14.9 tons/acre. `Baker', `Bolero', `Catalina', `Olympia', and `Padre' had significantly higher levels of bolting resistance than other cultivars in the trials. 'Catalina', `Olympia', and `Padre' also exhibited the darkest green color of those cultivars with bolting resistance. Based upon bolting resistance, `Catalina', `Olympia', `Padre', `Baker', and `Bolero' are five cultivars that can be recommended for use in spring planted spinach in Oklahoma and the southern plains.

Download Full-text