![]() ![]() Their rapid growth means that cucumbers may need harvested every couple of days. It is important to remove any fruits nearing maturity to ensure the plant remains productive. Cucumbers for pickling are generally picked when they are less than 5 cm (2 in) long whereas burpless cucumbers for slicing should be allowed to reach approximately 4 cm (~1.5 in) in diameter. The size of cucumbers at harvest depends on the variety of the cucumber being grown and what it is to be used for. Mature fruits are yellow and the flesh is often tough with woody seeds. ![]() viz., cucumber (Kumar and Khan 1984), bitter gourd (Kulwant and Shetty 1996). Mulches can be used to conserve soil moisture and black plastic mulch has the advantage of warming the soil.Ĭucumbers should be harvested from the plant when they are still immature and green in color. Gummy stem blight is a major disease affecting cultivation of cucurbitaceous. Shallow watering or watering less frequently will reduce fruit yields. Cucumbers also require a continuous supply of water and where drip irrigation is not being used, plants should be watered deeply once per week, providing at least an inch of water. Providing burpless varieties with vertical support allows the fruits to hang loose and grow straight. Vines can be trained to grow on a trellis or fence. Cucumber seeds should germinate in 4–13 days depending on the soil temperature.Ĭucumber vines are sprawling and require plenty space to grow. The identification and use of molecular markers linked to resistance genes in the wild-type germplasm will speed up the introgression of. The wild watermelon germplasm PI 189225 is a known source of resistance to GSB. Didymella bryoniae), is a destructive foliar disease of watermelon in areas with hot and humid climates. radicis-cucumerinum), gummy stem blight (Didymella. After emergence, thin the seedlings to 1 or 2 plants per hill. Gummy stem blight (GSB), caused by Stagonosporopsis cucurbitacearum (syn. The major diseases on cucumber are Pythium crown and root rot (Pythium aphanidermatum), Fusarium root and stem rot (Fusarium oxysporum f. In this instance, seeds should be sown on hills in groups of 4–6 seeds, allowing 1.2 m (4 ft) between each group in all directions. Cucumbers can also be seeded on hills or mounds of soil to encourage warm soil and better drainage. Sow seeds 1.3–2.5 cm (0.5–1.0 in) deep, thinning to a spacing of at least 30 cm (12 in) between plants after germination. Seeds should be sown after the last frosts and when the soil has warmed to at least 15.6☌ (60☏). These types are recommended for growing in glasshouses as they do not require the presence of insect pollinators.ĭirect seeding is the preferred method for sowing cucumbers as they do not transplant well. Some gynoecious varieties are parthenocarpic which means that they do not need the male plants to produce fruit. Some gynoecious varieties require pollinating with male flowers, in which case a proportion of the seeds in the packet will be pollinator plants which produce the male flowers. Many newer cucumber varieties are gynoecious which means that they produce only, or mostly, female flowers. One of the biggest considerations when choosing a cucumber variety is whether or not it requires pollinating. Cucumbers are very sensitive to cold and should be planted in full sun and provided with ample soil moisture due to their shallow root system. Cucumbers will yield best if grown in a fertile, well-draining soil, rich in organic matter and with a pH between 6.5 and 7.5. Gummy stem blight (GSB), caused by Didymella bryoniae, is a serious fungal disease that leads to decline in cucumber yield and quality.The molecular mechanism of GSB resistance in cucumber remains unclear. Gummy stem blight is a disease of Cucurbits cause by two members of the Pleosporales order Didymella bryoniae and Phoma cucurbitacearum, fungal plant pathogens, which attack mature plants.Cucumbers require warm, dry conditions to develop optimally, preferring both warm days and warm nights and growing best at a temperature of 30☌ (86☏). Sphaerella bryoniae Auersw., 5: 15 (1869) Gummy stem blight (GSB), caused by Didymella bryoniae, is one of the most devastating diseases that severely reduces cucumber production.Developing resistant varieties would be an effective strategy to control GSB. Mycosphaerella cucumis (Fautrey & Roum.) W.F. Sm., (1905)Īscochyta cucumis Fautrey & Roum., (1891)Ĭercospora cucurbitae Ellis & Everh., (1888)ĭidymosphaeria bryoniae (Auersw.) Niessl, (1875)ĭiplodina citrullina (Chester) Grossenb., (1909) A cucumber showing the later stages of gummy stem blight caused by the anamorph Phoma cucurbitacearumĪscochyta citrullina (Chester) C.O. ![]()
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