Okra is a commercial vegetable crop with considerable area under cultivation in Africa and Asia. Okra belongs to the family Malvaceae. It probably originated in Ethiopia and is widely spread all over tropical, subtropical and warm temperate regions of the world. Okra plays an important role in the human diet by supplying fats, proteins, carbohydrates, minerals and vitamins. Moreover, its mucilage is suitable for certain medical and industrial applications. Therefore, young fruits of okra have reawakened beneficial interest in bringing this crop into commercial production. The optimum yield of okra is approximately 6.6 t ha-1. Okra requires warm temperatures. The optimum temperatures are in the range of 20-30°C, with minimum temperatures of 18°C and maximum of 35°C. Okra needs rather high quantity of water despite having considerable drought resistance. The plant forms a deeply penetrating tap root with dense shallow feeder roots reaching out in all directions in the upper 45 cm of soil. Soil clamminess is essential during the continuation of growing period.

No abstract

Yield components and genetic variation for high yield potential is an essential prerequisite for the development of chilli cultivars with improved production system. The objectives of this study were to evaluate yield and yield component and genotypic variability of chill germplasm. Each experiment was conducted in a Randomized complete block design (RCBD) with four replications of two production systems between December 2012 and June 2013. The results showed that in this germplasm, there were highly significant variability (p≤0.01) for fruit width, fruit length, number of fruits plant -1 , fruit weights fruit -1 and fruit yields plant -1 . The highest number of quality fruit was found on Chee genotype 519.42±14.27 and 512.69±12.35 fruits plant -1 under inorganic and organic agricultural systems, respectively. The lowest number of quality fruit was observed on Labmeunang genotype (27.63±6.10 and 19.89±5.78 fruits plant -1 under the inorganic agricultural system and organic agricultural system, respectively). Chee genotype produced the highest yield under the inorganic and organic agricultural system 701.22±18.58 and 630.61±16.35 g plant -1 , respectively. Labmeunang genotype produced the lowest yield (26.45±10.05 g.plant -1) under the organic agricultural system. The results indicated that Chee genotype show potential for chilli production in both systems.

Yield, yield components, antioxidant activity and genetic variation of fifty genotypes on Vigna spp. were evaluated under two production systems (inorganic and organic agricultural systems) at the field trails in the Kingdom of Thailand. The experimental design was a Randomized Complete Block Design with four replications and twenty plants in blocks. It was found that pod length, fresh pod weight, number of seeds, number of pods, fresh pod yield, 100 seed weight and harvest index showed significant difference (p≤0.05). The highest quality number of pods was found on Fakdang 71.75 and 55.25 pod.plant-1 under inorganic and organic agricultural system, respectively. The Kangkragan produced the highest quality yield 1,385.20 and 1,135.30 g.plant-1 under inorganic agricultural system and organic agricultural system, respectively. Suarpran had the lowest quality yield 208.10 g.plant-1 under organic agricultural system. The highest values for trolox equivalent antioxidant capacity (TEAC) and 2,2-diphenyl-1-picrylhydrazyl radical scavenging ability (DPPH) were obtained from Panomsarakram and Fakdang (95.36 and 35.61% of inhibition, respectively). The outcome of this study can be used as guidance for Vigna spp. production in Thailand.

Thirty five lines of chilli were evaluated under inorganic and organic production systems. The objective of this study was to compare crop performance of chilli lines in terms of productivity that have good adaptation to inorganic and organic production systems. The chilli lines were carried out a Randomized Complete Block Design under inorganic and organic production systems. The results showed that there were highly significant (p≤0.01) for number of fruits/plant and yield/plant. The highest number of quality fruits was found on Chee: approximately 519.42 and 512.69 fruits/plant under inorganic and organic production systems, respectively. The lowest number of quality fruits was observed on Labmeunang line about 27.63 and 19.89 fruits/plant under the inorganic production system and organic production system, respectively. Chee line produced the highest yield under the chemical and organic production system about 701.22 and 630.61 grams/plant, respectively. Labmeunang line produced the lowest yield (26.45 grams/plant) under the organic production system.