Abstract
In this study it was determined dry matter and nitrogen accumulation in husk tomato var. CHF1-Chapingo with the objective of having information allowing the estimation of the plant’s demand for this nutrient. We used a greenhouse open hydroponics system and evaluated five levels of N-NO3 (5, 7, 9, 11, and 13 meq·liter-1) in the nutrient solution. The highest value of biomass accumulation during the agricultural cycle (411 g·plant-1 with a yield of 2.15 kg fruits per plant) was obtained under the nutrient condition of 9 meq·liter-1 of N-NO3. The highest harvest index (0.5) was obtained under the nutrient solution of 13 meq·liter-1 of N-NO3 (355 g·plant-1 of biomass with a yield of 2.16 kg fruits per plant). We observed that, to obtain a yield of 2.16 kg of fruits per plant, nitrogen demand was 8.03 g in total aerial biomass, which is equivalent to 3.71 kg of N per fresh fruit ton.
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