The effect of frequency of nitrogen application on growth yield and quality of tomato grown under plastic-houses

Zuraiqi, S.; Battikhi, A. M.

doi:10.9755/ejfa.v4i1.5092

Cited by 1 publication

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“…The number of harvested fruits per pot was 4.6 with 80 g, 6.1 with 120 g, 8.7 with 160 g, and 8.9 with 200 g, and increased with increasing amounts of fertilizer and was highest with 200 g. There was no significant difference in the number of harvested fruits and the growth of zucchini with 160 g and 200 g. It was assumed that the nutrient uptake ability of the roots was limited because the roots were restricted by the pot. For effective tomato culture, Zuraiqi and Battilhi (1992) [19] recommended four applications of nitrogen fertilizer per season at a rate of 30 kg/ha at two-week intervals. In contrast, Diez et al (1997) [20] and Eghball and Power (1999) [21] obtained no yield differences between crops grown with compost and those grown with chemical fertilizer.…”

Section: Resultsmentioning

confidence: 99%

Required amounts of medium and fertilizer for potted culture of zucchini

Ikeura¹,

Tokuda²,

Hayata³

2012

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In Japan, zucchini culture has yet to get underway, and the current costs of zucchini can be attributed to damage from soil-borne disease and the unstable yields due to seasonal change of female flowers. Eradication of these problems will lead to stable supply and a consequent price reduction of zucchini fruits. We previously clarified the efficacy of potted culture as a new culture method for zucchini, but potted culture can be burdensome as the weak water and nutrient retention capacity of the medium warrants its regular replacement. To solve this problem, in this study, we investigated the blend ratio for mixing rice husk charcoal with peat and the amount of fertilizer required for potted culture of zucchini. Results revealed no significant differences in the length of the largest leaf, total number of flowers, number of female flowers, and the ratio of female flowers to total flowers with different blend ratios of rice husk charcoal to peat. However, the number of harvested fruits increased with higher ratios of rice husk charcoal to peat and was highest at 80:20. The length of the largest leaf increased with increased amounts of fertilizer, with the best response was at 200 g. No significant differences were noted between the ratio of female flowers to total flowers in any treatments. In addition, the number of harvested fruits was highest with 160 g and 200 g of fertilizer. Taken together, the optimal blend ratio of rice husk charcoal to peat is 80:20, and the optimal amount of fertilizer with this ratio is 160 g

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