Fertilización foliar en tomate con el uso de agroplásticos

Abstract

This work was performed with the aim of evaluating complete fertilizers and mixtures as related to foliar mass in tomato, under agro-plastic conditions. It was settled during the cycle spring-summer 1995, at the Experimental Field of Horticulture of the University Agrarian Antonio Narro (UAAAN), under a randomized blocks design in divided parcels, with four repetitions. Six complete fertilizers and six mixtures were stud ied, evaluating in addition, three intervals of application every 5, 10 and 15 days. The results show that, for the quality of medium sized fruit, the best mixture was Superfos + Agro-k, with 19,27 %, for great and extragreat fruit the best were Foltron plus and Foligro fertilizers with 10,05 and 9,61 %, respectively. The results indicate that the intervals of 5 and 10 days yield statistically equal results, where the interval of 5 days presents a greater total efficiency, in comparison to the one of 15 days, with 82.094 an experimental pro duction of t ha^-1, having a diminution of the total efficiency of 19.46 and 18.65 %, with 5 and 10 days of interval respectively. The treatments of greater production were: number 10 (Grofol applied every 5 days), producing 133.28 t ha^-1, number 2 (Nitrofoska applied every 10 days), and number 8 (Foltron plus applied every 10 days) with 127.23 and 126.65 t ha^-1) respectively. Those of smaller production were: number 18 (Cosmocel applied every 15 days), number 30 (Superfos + Agro-k applied every 15 days) and number 36 (Superfos + Poliquel M. applied every 15 days) with 58.15, 65.51 and 70.60 t ha^-1, respectively.