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Abstract
Once-over harvest with a mechanical harvester is becoming more important in the production of many crops. This is particularly true for southern peas because a major item of expense in production of the crop is harvesting if hand harvested. Recently, research was reported concerning the use of 2,3,5-triiodobenzoic acid (TIBA) for increasing adaptability of southern peas for mechanical harvest (3). The work by Hipp and Cowley (3) indicated better plant geometry for mechanical harvest but only a slight increase in yield when peas were grown on 38-inch beds. Prevatt and Lundy (4) reported smaller, more compact pea plants with the application of TIBA to southern peas. The use of TIBA on soybeans also results in small compact plants but yield increases are generally small when plants are grown on conventional 38-inch rows. Variations in row spacing appears to be the most logical method of increasing yield of peas since TIBA application generally results in reduced plant size (1,2,3,4,5). Experiments were conducted at the Texas A&M University Agricultural Research and Extension Center at Weslaco to evaluate the influence of TIBA and Gibberellin on the yield and growth parameters of California Blackeye No. 5 peas.
Abstract
Field experiments were conducted to determine the influence of TIBA and Gibberellin sprays on yield, growth characteristics and chemical composition of ‘California Black eye No. 5’ and ‘Purple Hull Pinkeye’ varieties of southern peas. Yield of peas was slightly increased on both varieties with the application of TIBA. Time of application as well as rate was a critical factor in producing maximum yields. Application of TIBA reduced plant size and concentrated maturity. The application of 50 ppm Gibberellin 5 days after application of 20 g per acre of TIBA further concentrated maturity and increased the desirability of peas for mechanical harvest. Iron concentrations in pea leaves were increased with application of TIBA.
Abstract
Zn deficiencies in field grown okra (Hibiscus esculentus L.) were induced with band P applications of 29 and 58 kg/ha. Okra yields were slightly increased with these elements applied alone but P and Zn in combination resulted in highest yields. Yields of okra were reduced when P and Zn concn in 10 to 15 day old plants were less than 0.30% and 40 ppm, respectively.
Abstract
Brassica carinata has an excellent potential as a green leafy vegetable for production in the Southwest. The flavor of the cooked, canned or frozen greens is somewhat milder than collard greens without the pungency of mustard greens. The percentage of moisture, titratable acidity, pH, Brix, ascorbic acid, protein, ash and calcium are similar in amounts to collards, cabbage, spinach and mustard greens. The percentage of oxalic acid is considerably less than the amounts reported in spinach.