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  • Author or Editor: William A. Mulkey x
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Field studies were conducted in 1991 with `Jalapeno-M' and `TAM' Jalapeno pepper. Plants were established by direct seeding at 10, 20, 30, and 40 cm in-row plant spacing. Lodged plants, fruit quality and yield were monitored. A commercial snap-bean harvester was evaluated for harvest. Closer plant spacings resulted in greater yields and reduced plant lodging. No interaction of variety with plant spacing was observed. There were, however, differences in several yield parameters due to variety. Fruit quality characteristics of mechanically and hand harvested pepper stored at 6 C were similar. The use of the mechanical snap-bean harvester appears to be a feasible technique to harvest Jalapeno pepper.

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Field studies were conducted in 1991 and 1992 to evaluate the effect of in-row spacing on machine-harvested jalapeno pepper (Capsicum annuum L.) yield and plant characteristics. In 1991, `TAM Mild Jalapeno-1' (TAMJ1) and `Jalapeno-M' (JM) were planted at 4-, 8-, 12-, and 16-inch (10-, 20-, 30-, 40-cm) in-row spacings and, in 1992, TAMJ1 was planted at 3-, 6-, 9-, and 12-inch (7.5-, 15-, 22.5-, 30-cm) spacings. Total marketable yield increased linearly for JM (in 1991), while the yield response was quadratic for TAMJ1 in 1992 with narrower in-row spacing. Total marketable yield for JM (1991) and TAMJ1 (1992) was highest for the narrowest spacing, 4 and 3 inches, respectively. Red fruit yield of both cultivars in 1991 increased linearly with narrower spacing. In 1992 there were no differences in red fruit yield among in-row spacings. Plants lodged more at wider spacings. In-row spacings as narrow as 4 inches may increase marketable yield of machine-harvested jalapeno pepper.

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Field studies were conducted in 1992 with `GMississippi Sport' pepper. Plants were established by direct seeding at 8 cm or transplanting at 8, 15, 23 and 30 cm in-row plant spacing. All in-row plant spacings received one of five nitrogen applications (0, 55, 110, 165, 220 kg pe hectare). Plant parameters, fruit quality and yield were monitored. A modified commercial snap-bean harvester was evaluated for harvest. Closer plant spacings resulted in greater red and combined red and green grade yields. Nitrogen rate did not influence yield or stem diameter and height. The use of the modified mechanical snap-bean harvester appears to be a feasible technique to harvest sport pepper.

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