The purpose of this study was to evaluate the effect of humic acid (HA) applied at 4.8, 9.6 and 14.4 kg·ha -1 on the growth and productivity of two tomato hybrids Nema 1400 and Platinium 5043 under hot continental climate. HA was applied twice to soil: the first one -three weeks from transplanting and the second one, after one week from the first application, in both seasons. Application of HA during the summer season targeted a great results on tomato plant growth and productivity. HA at 14.4 kg·ha -1 increased the vegetative growth of tomatoes (plant height and fresh weight) and flowering parameters (number of flower clusters and flowers per plant) as well as yield characters (fruit number per plant and fruit weight, which resulted in higher early and total yield) in both seasons. HA application had the least impact on fruit number per plant, and on vitamin C and total soluble solids (TSS) concentration as compared with control.
wenty one colored-and white-skin garlic genotypes from different places of the Middle Egypt were evaluated in this study for their performance in laboratory and organic farm in newly reclaimed sandy soil. Cloves of all the evaluated genotypes were planted in foam trays filled with beat moss and vermiculite soil 3:1 v/v (without chemical fertilizers). Data of the described characters were recorded after 45 days from plantation in the trays however, yield data were recorded after 180 days from the direct plantation of garlic cloves in the open field (mature stage). Results showed that these genotypes performed well under the organic agriculture in this virgin sandy soil. Most of the simple correlation coefficients values among various growth, biomass after 45 days under laboratory conditions and yield per plant under field conditions for the ten colored and eleven white genotypes for the studied characteristics were positive and significant. Yield of some of these genotypes in the open field was very acceptable and profitable. These results are very promising in which some of these genotypes can be used in organic garlic cultivations under the Middle Egypt conditions and similar environments.
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