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Guojing Li, Yonghua Liu, Jeffrey D. Ehlers, Zhujun Zhu, Xiaohua Wu, Baogeng Wang and Zhongfu Lu

Asparagus bean” or “yardlong” bean [ Vigna unguiculata ssp. sesquipedialis (L.) Verdc.] is a type of cowpea ( Vigna unguiculata ) that produces very long pods that are harvested at an immature stage and are similar in many respects to “snap

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Pei Xu, Tingting Hu, Yuejian Yang, Xiaohua Wu, Baogen Wang, Yonghua Liu, Dehui Qin, Jeffrey Ehlers, Timothy Close, Zhongfu Lu and Guojing Li

, 1997 ; Singh, 2002 ). The ssp. sesquipedalis , also known as asparagus bean or “yard long” bean, is widely grown in east and southern Asia for production of immature pods. Genetic similarity between the two subspecies is high as evidenced by the fact

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Christine Coker, Mike Ely and Thomas Freeman

Yardlong bean, also called chinese long bean or asparagus bean, is the same species as cowpea. The pods are popular in southeast Asian, Chinese, and Filipino cultures. It is a vigorous climbing annual, producing 9- to 12-ft indeterminate vines. The

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Francisca López-Granados, M. Teresa Gómez-Casero, José M. Peña-Barragán, Montserrat Jurado-Expósito and Luis García-Torres

three periods of the year: Spring 2007 (on 15 May: alfalfa, asparagus, bean, early maize, garlic, onion, potato, sunflower, wheat, citrus, olive, and plum), early summer (on 28 June: alfalfa, asparagus, cotton, cucurbits, early maize, sunflower, citrus

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Gerardo Araiza-Celaya, Eduardo Liñeiro-Celaya, Raúl L. Grijalva-Contreras, Francisco López-Vilchez, Victor Salvador-Rivas and Fabián Robles-Contreras

Vegetable production in the Caborca area is about 6500 ha, and the main crops are asparagus, muskmelon, watermelon, and pea. However during 1999, some growers tested green snap beans as a new crop for this area. The objective of this experiment was to evaluate five green snap beans with round podded (`Benchmark', `Landmark', `Jade', `Probe', and `Prosperity') and two densities (14 and 28 seeds/m) on subsurface drip irrigation system. The sowing was on beds of 2.0 m with two rows separated 60 cm. The date sowing was on 7 Sept. 1999. The first cutting were between 65 and 70 days after sowing in all varieties; in this case `Benchmark' was the earliest. The cumulative yield were 330, 140, 87, 63, and 20 boxes/ha (30 lb/box), respectively, in four harvests. On the other hand, the high population yielded 14.4% more than the low population. All varieties were damaged by frost that ocurred on 22 and 23 Nov. `Prosperity' was more susceptible to mosaic virus and `Benchmark' more tolerant. The pod quality distributions were 19.9%, 21.5%, 26.1%, and 21.0% for classes 1, 2, 3, and 4, respectively. We have not seen any important insect pests during this trial.

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Raul Leonel Grijalva-Contreras*, Eduardo Liñeiro-Celaya, Gerardo Araiza-Celaya, Victor Salvador-Rivas and Francisco Lopez-Vilchez

The agricultural activity in Caborca, Sonora, depends on fruit trees and vegetable production, and the main crops are grapes, olive, and asparagus. However, is necessary to evaluate other vegetables. An alternative is the green snap beans production. This vegetable can be harvested during the last week of November, when, good prices aare available in the market. The objective of this experiment was to evaluate seven green snap beans varieties with round pod. The experiment was on 24 Aug. The density used was 20 seeds per meter (about 60 kg·ha-1). The experiment was carried out during 2001 with commercial growers. The date of sow was distance between beds was 2.0 m and we used two rows with 36 cm of separation. In our experiment, we used a drip irrigation system. The first harvest was 67 days after the date sowing and it was for 28 days with seven cuttings. The varieties with more yield were Festina, Mercury, and Castaño with 771, 632 and 558 boxes/ha, (30 pounds/box), respectively. The control variety (Savannah) yielded only 345 boxes/ha. The pod quality distribution was 26%, 32%, 50%, and 15% for classification 1, 2, 3, and no commercial value respectively. The Savannah variety was the best pod color (dark green) and more yield during the last cutting. None of the varieties evaluated had problems of pest and diseases.

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Fabián Robles-Contreras, Raul Leonel Grijalva-Contreras, Manuel de Jesus Valenzuela-Ruiz and Rubén Macias-Duarte

The main crops in Caborca, Sonora, Mexico, in the Sonoran Desert, are grapes, asparagus, olive, and vegetables, such as melons and green beans. The growers in this area normally do not use methods to calculate water requirements of the crops, although in a desert region water use management needs to be as efficient as possible. A reason for using some of the models is the need to fit water requirements to regional conditions, or some stress could be caused in the crops. Recently, studies have been made in northwestern Mexico that indicate it is feasible to adapt the use of the Makkink model. Three models for estimated potential evapotranspiration (Eto) were evaluated: Penman-Monteith, Hargreaves, and Makkink, and were compared with the Class A pan method (control). Measured variables were the correlation coefficient (R 2) between the models and the control; and the daily average difference between the models and the control. The results indicate that a low R 2 exists between the three evaluated models and the control (0.55, 0.67, and 0.54 for Hargreaves, Penman-Monteith, and Makkink, respectively). The average difference of the daily Eto in the course of 75 days of evaluation was of 0.62, 0.5, and 0.81 mm/day for Hargreaves, Penman-Monteith, and Makkink, respectively. This represents almost 6–10 cm less of potential evapotranspiration with the models, for a cycle crop of 120–130 days.

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Gang Lu, Wenlei Jian, Jiajing Zhang, Yijing Zhou and Jiashu Cao

Asparagus officinalis L., a member of the family Liliaceae, is an important vegetable worldwide for its culinary and medicinal properties. The world total yield reached 6,346,000 t in 2006 ( FAO, 2006 ). Stem blight, caused by a complex of fungal

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Todd C. Wehner and Beiquan Mou

Crop listings : asparagus, bean–dry, bean–green, beet, broccoli, cabbage, cabbage–Chinese, carrot, cauliflower, celery, collard, cucumber, eggplant, endive, herbs–parsley, leek, lettuce, melon, okra, onion, pea–green, pepper, pumpkin, radish

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Jaejoon Kim and David J. Wolyn

Asparagus ( Asparagus officinalis ) is an herbaceous perennial plant in which the above-ground fern senesces and dies in the fall, leaving only the below-ground crown to overwinter. In southern Ontario, where air and soil temperatures of –20 and –5