Resumo

RAMIREZ-IBARRA, José Apolinar et al. Compositional nutrients diagnosis and nutrimental interactions in Jalapeño pepper (Capsicum annuum L.) in semiarids soils. Ecosistemas y recur. agropecuarios [online]. 2017, vol.4, n.11, pp.233-242. ISSN 2007-901X.  https://doi.org/10.19136/era.a4n11.1047.

It is fundamental to know nutrimental requierements of every hot pepper genotype, as well as its interaction with the several environments where it is cropped. The aims of this study were to estimate nutrient norms by using the technique of compositional nutrient diagnosis (CND) for hot pepper type jalapeño Autlán in the Comarca Lagunera during the cycle spring-summer 2013 and to analize the nutrimental interactions among the nutrients and its relationship with yield by using the Pearson correlations approach. With this purpose, it was taken a sample 100 plants on which was determined the content of N, P, K, Ca and Mg and determinations were correlated to yield. It was calculated a minimum reference yield of 52.09 t ha-1 and optimal ranges of these macro-nutrients on foliar tissue were determined as follow N (4.57 ± 0.25), P (0.18 ± 0.03), K (6.80 ± 1.04), Ca (2.46 ± 0.17) y Mg (0.64 ± 0.07) for achievement of high yields. Decrecent order of nutrimental extractions on flowering stage were K > N> Ca > Mg > P, similar pattern of other pepper cultivars, but notabilly different to other cropped species as sábila (Aloe vera L.) or nopal (Opuntia ficus-indica L.). There were observed the folloeing sinergisms N and P, N and K, P and K, Ca and Mg. While phosphorus was the unique nutrient that showed positive correlation to yield.

Palavras-chave : Yield; correlations; normas nutrient norms; concentration.